/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/sum_invariant.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:29:03,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:29:03,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:29:03,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:29:03,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:29:03,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:29:03,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:29:03,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:29:03,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:29:03,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:29:03,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:29:03,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:29:03,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:29:03,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:29:03,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:29:03,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:29:03,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:29:03,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:29:03,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:29:03,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:29:03,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:29:03,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:29:03,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:29:03,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:29:03,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 13:29:03,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:29:03,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:29:03,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:29:03,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2021-03-24 13:29:03,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:29:03,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:29:03,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:29:03,865 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:29:03,865 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:29:03,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:29:03,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:29:03,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:29:03,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:29:03,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:29:03,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:29:03,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:29:03,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:29:03,867 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:29:03,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:29:03,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:29:03,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:29:03,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:29:03,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:29:03,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:29:03,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:29:03,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:29:03,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:29:03,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:29:03,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:29:03,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:29:03,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:29:03,870 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:29:03,870 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:29:03,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:29:04,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:29:04,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:29:04,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:29:04,189 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 13:29:04,190 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 13:29:04,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-03-24 13:29:04,191 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-03-24 13:29:04,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:29:04,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 13:29:04,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:29:04,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:29:04,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:29:04,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... [2021-03-24 13:29:04,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... [2021-03-24 13:29:04,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:29:04,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:29:04,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:29:04,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:29:04,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... [2021-03-24 13:29:04,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... [2021-03-24 13:29:04,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... [2021-03-24 13:29:04,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... [2021-03-24 13:29:04,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... [2021-03-24 13:29:04,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... [2021-03-24 13:29:04,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... [2021-03-24 13:29:04,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:29:04,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:29:04,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:29:04,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:29:04,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:29:04,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 13:29:04,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:29:04,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:29:04,330 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-03-24 13:29:04,330 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-03-24 13:29:04,330 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-03-24 13:29:04,331 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:29:04,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:29:04,440 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 13:29:04,441 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:29:04 BoogieIcfgContainer [2021-03-24 13:29:04,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:29:04,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:29:04,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:29:04,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:29:04,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:29:04" (1/2) ... [2021-03-24 13:29:04,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6178468f and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:29:04, skipping insertion in model container [2021-03-24 13:29:04,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:29:04" (2/2) ... [2021-03-24 13:29:04,447 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-03-24 13:29:04,451 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:29:04,454 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 13:29:04,455 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:29:04,474 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,475 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,475 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,475 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,476 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,476 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,476 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,477 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,477 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,477 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,477 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,478 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,478 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,478 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,478 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,479 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,479 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,479 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,480 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,480 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,480 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,480 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,481 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,481 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,483 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,486 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,488 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,489 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:29:04,510 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-03-24 13:29:04,525 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 13:29:04,542 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:29:04,542 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:29:04,542 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:29:04,542 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:29:04,542 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:29:04,542 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:29:04,542 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:29:04,542 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:29:04,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 156 flow [2021-03-24 13:29:04,628 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2021-03-24 13:29:04,628 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-24 13:29:04,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 56 events. 17/56 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 49. Up to 12 conditions per place. [2021-03-24 13:29:04,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 156 flow [2021-03-24 13:29:04,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 136 flow [2021-03-24 13:29:04,638 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:29:04,646 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 38 transitions, 136 flow [2021-03-24 13:29:04,648 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 38 transitions, 136 flow [2021-03-24 13:29:04,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 136 flow [2021-03-24 13:29:04,669 INFO L129 PetriNetUnfolder]: 17/54 cut-off events. [2021-03-24 13:29:04,670 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-24 13:29:04,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 54 events. 17/54 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 49. Up to 12 conditions per place. [2021-03-24 13:29:04,673 INFO L142 LiptonReduction]: Number of co-enabled transitions 528 [2021-03-24 13:29:04,867 INFO L154 LiptonReduction]: Checked pairs total: 450 [2021-03-24 13:29:04,867 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-24 13:29:04,869 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 232 [2021-03-24 13:29:04,899 INFO L129 PetriNetUnfolder]: 17/45 cut-off events. [2021-03-24 13:29:04,900 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-24 13:29:04,900 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:04,901 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:04,901 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:04,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:04,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2141140642, now seen corresponding path program 1 times [2021-03-24 13:29:04,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:04,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572078780] [2021-03-24 13:29:04,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:05,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:29:05,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:29:05,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:29:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:05,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572078780] [2021-03-24 13:29:05,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:05,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:29:05,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570675885] [2021-03-24 13:29:05,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:29:05,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:05,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:29:05,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:29:05,071 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 52 [2021-03-24 13:29:05,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:05,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 52 [2021-03-24 13:29:05,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:05,108 INFO L129 PetriNetUnfolder]: 5/27 cut-off events. [2021-03-24 13:29:05,108 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-03-24 13:29:05,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 27 events. 5/27 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 7/34 useless extension candidates. Maximal degree in co-relation 32. Up to 6 conditions per place. [2021-03-24 13:29:05,110 INFO L132 encePairwiseOnDemand]: 48/52 looper letters, 1 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2021-03-24 13:29:05,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 94 flow [2021-03-24 13:29:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:29:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:29:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-24 13:29:05,123 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9358974358974359 [2021-03-24 13:29:05,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-24 13:29:05,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-24 13:29:05,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:05,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-24 13:29:05,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,133 INFO L185 Difference]: Start difference. First operand has 31 places, 30 transitions, 120 flow. Second operand 3 states and 146 transitions. [2021-03-24 13:29:05,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 94 flow [2021-03-24 13:29:05,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 66 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-24 13:29:05,138 INFO L241 Difference]: Finished difference. Result has 25 places, 24 transitions, 64 flow [2021-03-24 13:29:05,139 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2021-03-24 13:29:05,140 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2021-03-24 13:29:05,140 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 64 flow [2021-03-24 13:29:05,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,140 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:05,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:05,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:29:05,141 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:05,142 INFO L82 PathProgramCache]: Analyzing trace with hash 325226480, now seen corresponding path program 1 times [2021-03-24 13:29:05,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:05,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407878219] [2021-03-24 13:29:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:05,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:29:05,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:29:05,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:29:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:05,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407878219] [2021-03-24 13:29:05,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:05,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:29:05,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818497741] [2021-03-24 13:29:05,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:29:05,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:05,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:29:05,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:29:05,171 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 52 [2021-03-24 13:29:05,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:05,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 52 [2021-03-24 13:29:05,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:05,195 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2021-03-24 13:29:05,195 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 13:29:05,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 24 events. 3/24 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 22. Up to 4 conditions per place. [2021-03-24 13:29:05,196 INFO L132 encePairwiseOnDemand]: 50/52 looper letters, 2 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2021-03-24 13:29:05,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 67 flow [2021-03-24 13:29:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:29:05,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:29:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2021-03-24 13:29:05,198 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9294871794871795 [2021-03-24 13:29:05,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2021-03-24 13:29:05,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2021-03-24 13:29:05,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:05,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2021-03-24 13:29:05,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,201 INFO L185 Difference]: Start difference. First operand has 25 places, 24 transitions, 64 flow. Second operand 3 states and 145 transitions. [2021-03-24 13:29:05,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 67 flow [2021-03-24 13:29:05,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:05,202 INFO L241 Difference]: Finished difference. Result has 26 places, 23 transitions, 62 flow [2021-03-24 13:29:05,202 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2021-03-24 13:29:05,203 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2021-03-24 13:29:05,203 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 62 flow [2021-03-24 13:29:05,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,203 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:05,203 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:05,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:29:05,204 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:05,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:05,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1072858812, now seen corresponding path program 1 times [2021-03-24 13:29:05,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:05,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544210435] [2021-03-24 13:29:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:05,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,332 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:05,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:05,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544210435] [2021-03-24 13:29:05,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:05,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 13:29:05,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139677082] [2021-03-24 13:29:05,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 13:29:05,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:05,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 13:29:05,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 13:29:05,340 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:05,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:05,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:05,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:05,491 INFO L129 PetriNetUnfolder]: 278/502 cut-off events. [2021-03-24 13:29:05,491 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 13:29:05,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 502 events. 278/502 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2238 event pairs, 51 based on Foata normal form. 1/503 useless extension candidates. Maximal degree in co-relation 1022. Up to 312 conditions per place. [2021-03-24 13:29:05,499 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 21 selfloop transitions, 21 changer transitions 0/51 dead transitions. [2021-03-24 13:29:05,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 51 transitions, 216 flow [2021-03-24 13:29:05,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 13:29:05,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 13:29:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2021-03-24 13:29:05,505 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5989010989010989 [2021-03-24 13:29:05,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 218 transitions. [2021-03-24 13:29:05,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 218 transitions. [2021-03-24 13:29:05,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:05,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 218 transitions. [2021-03-24 13:29:05,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.142857142857142) internal successors, (218), 7 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,508 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,508 INFO L185 Difference]: Start difference. First operand has 26 places, 23 transitions, 62 flow. Second operand 7 states and 218 transitions. [2021-03-24 13:29:05,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 51 transitions, 216 flow [2021-03-24 13:29:05,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:05,511 INFO L241 Difference]: Finished difference. Result has 36 places, 43 transitions, 190 flow [2021-03-24 13:29:05,511 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=36, PETRI_TRANSITIONS=43} [2021-03-24 13:29:05,512 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-24 13:29:05,512 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 43 transitions, 190 flow [2021-03-24 13:29:05,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,512 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:05,512 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:05,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 13:29:05,513 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:05,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:05,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1087179988, now seen corresponding path program 1 times [2021-03-24 13:29:05,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:05,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871069284] [2021-03-24 13:29:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:05,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:29:05,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:29:05,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:29:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:05,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871069284] [2021-03-24 13:29:05,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:05,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:29:05,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87681931] [2021-03-24 13:29:05,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:29:05,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:05,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:29:05,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:29:05,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 52 [2021-03-24 13:29:05,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:05,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 52 [2021-03-24 13:29:05,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:05,553 INFO L129 PetriNetUnfolder]: 89/222 cut-off events. [2021-03-24 13:29:05,553 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2021-03-24 13:29:05,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 222 events. 89/222 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1138 event pairs, 18 based on Foata normal form. 22/242 useless extension candidates. Maximal degree in co-relation 537. Up to 77 conditions per place. [2021-03-24 13:29:05,555 INFO L132 encePairwiseOnDemand]: 49/52 looper letters, 1 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2021-03-24 13:29:05,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 179 flow [2021-03-24 13:29:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:29:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:29:05,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2021-03-24 13:29:05,556 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9294871794871795 [2021-03-24 13:29:05,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2021-03-24 13:29:05,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2021-03-24 13:29:05,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:05,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2021-03-24 13:29:05,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,558 INFO L185 Difference]: Start difference. First operand has 36 places, 43 transitions, 190 flow. Second operand 3 states and 145 transitions. [2021-03-24 13:29:05,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 179 flow [2021-03-24 13:29:05,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 179 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:05,562 INFO L241 Difference]: Finished difference. Result has 38 places, 38 transitions, 177 flow [2021-03-24 13:29:05,562 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2021-03-24 13:29:05,562 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-24 13:29:05,562 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 177 flow [2021-03-24 13:29:05,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,562 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:05,562 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:05,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 13:29:05,563 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:05,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:05,563 INFO L82 PathProgramCache]: Analyzing trace with hash 628584592, now seen corresponding path program 2 times [2021-03-24 13:29:05,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:05,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020150913] [2021-03-24 13:29:05,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:05,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:05,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:05,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:05,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020150913] [2021-03-24 13:29:05,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:05,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 13:29:05,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588697410] [2021-03-24 13:29:05,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 13:29:05,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:05,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 13:29:05,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-24 13:29:05,661 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:05,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:05,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:05,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:05,814 INFO L129 PetriNetUnfolder]: 279/492 cut-off events. [2021-03-24 13:29:05,814 INFO L130 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2021-03-24 13:29:05,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 492 events. 279/492 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2093 event pairs, 36 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 1625. Up to 362 conditions per place. [2021-03-24 13:29:05,820 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 37 selfloop transitions, 28 changer transitions 2/71 dead transitions. [2021-03-24 13:29:05,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 464 flow [2021-03-24 13:29:05,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 13:29:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 13:29:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2021-03-24 13:29:05,824 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5989010989010989 [2021-03-24 13:29:05,824 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 218 transitions. [2021-03-24 13:29:05,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 218 transitions. [2021-03-24 13:29:05,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:05,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 218 transitions. [2021-03-24 13:29:05,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 31.142857142857142) internal successors, (218), 7 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,827 INFO L185 Difference]: Start difference. First operand has 38 places, 38 transitions, 177 flow. Second operand 7 states and 218 transitions. [2021-03-24 13:29:05,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 464 flow [2021-03-24 13:29:05,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:05,832 INFO L241 Difference]: Finished difference. Result has 48 places, 61 transitions, 419 flow [2021-03-24 13:29:05,832 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=48, PETRI_TRANSITIONS=61} [2021-03-24 13:29:05,832 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-24 13:29:05,832 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 61 transitions, 419 flow [2021-03-24 13:29:05,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,833 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:05,833 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:05,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 13:29:05,833 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:05,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:05,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1511874718, now seen corresponding path program 3 times [2021-03-24 13:29:05,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:05,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659626061] [2021-03-24 13:29:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:05,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:05,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:05,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:05,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:05,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:05,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659626061] [2021-03-24 13:29:05,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:05,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:05,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363981861] [2021-03-24 13:29:05,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:05,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:05,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:05,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:05,970 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:05,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 61 transitions, 419 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:05,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:05,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:05,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:06,157 INFO L129 PetriNetUnfolder]: 285/517 cut-off events. [2021-03-24 13:29:06,157 INFO L130 PetriNetUnfolder]: For 743/743 co-relation queries the response was YES. [2021-03-24 13:29:06,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 517 events. 285/517 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2315 event pairs, 45 based on Foata normal form. 1/518 useless extension candidates. Maximal degree in co-relation 2193. Up to 316 conditions per place. [2021-03-24 13:29:06,164 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 21 selfloop transitions, 58 changer transitions 2/85 dead transitions. [2021-03-24 13:29:06,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 85 transitions, 709 flow [2021-03-24 13:29:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2021-03-24 13:29:06,166 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59375 [2021-03-24 13:29:06,167 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2021-03-24 13:29:06,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2021-03-24 13:29:06,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:06,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2021-03-24 13:29:06,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,172 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,172 INFO L185 Difference]: Start difference. First operand has 48 places, 61 transitions, 419 flow. Second operand 8 states and 247 transitions. [2021-03-24 13:29:06,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 85 transitions, 709 flow [2021-03-24 13:29:06,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 85 transitions, 701 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:06,186 INFO L241 Difference]: Finished difference. Result has 58 places, 75 transitions, 673 flow [2021-03-24 13:29:06,186 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=673, PETRI_PLACES=58, PETRI_TRANSITIONS=75} [2021-03-24 13:29:06,186 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-24 13:29:06,186 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 75 transitions, 673 flow [2021-03-24 13:29:06,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:06,187 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:06,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 13:29:06,187 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:06,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:06,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1651271808, now seen corresponding path program 4 times [2021-03-24 13:29:06,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:06,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772637859] [2021-03-24 13:29:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:06,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:06,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,316 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:06,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:06,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772637859] [2021-03-24 13:29:06,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:06,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:06,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491053348] [2021-03-24 13:29:06,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:06,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:06,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:06,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:06,324 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:06,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 75 transitions, 673 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:06,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:06,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:06,489 INFO L129 PetriNetUnfolder]: 291/542 cut-off events. [2021-03-24 13:29:06,489 INFO L130 PetriNetUnfolder]: For 1341/1341 co-relation queries the response was YES. [2021-03-24 13:29:06,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 542 events. 291/542 cut-off events. For 1341/1341 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2489 event pairs, 56 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 2797. Up to 354 conditions per place. [2021-03-24 13:29:06,494 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 46 selfloop transitions, 47 changer transitions 2/99 dead transitions. [2021-03-24 13:29:06,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 1003 flow [2021-03-24 13:29:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:06,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2021-03-24 13:29:06,496 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59375 [2021-03-24 13:29:06,496 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2021-03-24 13:29:06,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2021-03-24 13:29:06,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:06,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2021-03-24 13:29:06,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,498 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,498 INFO L185 Difference]: Start difference. First operand has 58 places, 75 transitions, 673 flow. Second operand 8 states and 247 transitions. [2021-03-24 13:29:06,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 1003 flow [2021-03-24 13:29:06,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 99 transitions, 898 flow, removed 36 selfloop flow, removed 3 redundant places. [2021-03-24 13:29:06,510 INFO L241 Difference]: Finished difference. Result has 65 places, 89 transitions, 817 flow [2021-03-24 13:29:06,511 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=817, PETRI_PLACES=65, PETRI_TRANSITIONS=89} [2021-03-24 13:29:06,511 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2021-03-24 13:29:06,511 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 89 transitions, 817 flow [2021-03-24 13:29:06,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,511 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:06,511 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:06,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 13:29:06,512 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1162701290, now seen corresponding path program 5 times [2021-03-24 13:29:06,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:06,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174623163] [2021-03-24 13:29:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:06,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:06,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,635 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:06,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:06,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174623163] [2021-03-24 13:29:06,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:06,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:06,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100071328] [2021-03-24 13:29:06,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:06,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:06,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:06,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:06,668 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:06,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 89 transitions, 817 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:06,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:06,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:06,859 INFO L129 PetriNetUnfolder]: 302/584 cut-off events. [2021-03-24 13:29:06,859 INFO L130 PetriNetUnfolder]: For 1172/1172 co-relation queries the response was YES. [2021-03-24 13:29:06,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 584 events. 302/584 cut-off events. For 1172/1172 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2858 event pairs, 52 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 2665. Up to 363 conditions per place. [2021-03-24 13:29:06,865 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 61 selfloop transitions, 46 changer transitions 3/114 dead transitions. [2021-03-24 13:29:06,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 114 transitions, 1169 flow [2021-03-24 13:29:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:06,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:06,866 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:06,866 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:06,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:06,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:06,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:06,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,868 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,868 INFO L185 Difference]: Start difference. First operand has 65 places, 89 transitions, 817 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:06,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 114 transitions, 1169 flow [2021-03-24 13:29:06,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 114 transitions, 1159 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:06,877 INFO L241 Difference]: Finished difference. Result has 75 places, 102 transitions, 1018 flow [2021-03-24 13:29:06,877 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1018, PETRI_PLACES=75, PETRI_TRANSITIONS=102} [2021-03-24 13:29:06,878 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2021-03-24 13:29:06,878 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 102 transitions, 1018 flow [2021-03-24 13:29:06,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:06,878 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:06,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 13:29:06,879 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:06,879 INFO L82 PathProgramCache]: Analyzing trace with hash -486155302, now seen corresponding path program 6 times [2021-03-24 13:29:06,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:06,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106197546] [2021-03-24 13:29:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:06,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:06,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:06,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:06,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:06,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:06,989 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:06,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:06,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106197546] [2021-03-24 13:29:06,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:06,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:06,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013260673] [2021-03-24 13:29:06,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:06,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:06,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:06,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:06,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:06,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 102 transitions, 1018 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:06,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:06,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:06,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:07,220 INFO L129 PetriNetUnfolder]: 326/666 cut-off events. [2021-03-24 13:29:07,220 INFO L130 PetriNetUnfolder]: For 1930/1930 co-relation queries the response was YES. [2021-03-24 13:29:07,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3806 conditions, 666 events. 326/666 cut-off events. For 1930/1930 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3556 event pairs, 45 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 3739. Up to 496 conditions per place. [2021-03-24 13:29:07,226 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 92 selfloop transitions, 59 changer transitions 6/161 dead transitions. [2021-03-24 13:29:07,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 161 transitions, 1927 flow [2021-03-24 13:29:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:07,229 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:07,229 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:07,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:07,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:07,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:07,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,232 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,232 INFO L185 Difference]: Start difference. First operand has 75 places, 102 transitions, 1018 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:07,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 161 transitions, 1927 flow [2021-03-24 13:29:07,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 161 transitions, 1895 flow, removed 16 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:07,252 INFO L241 Difference]: Finished difference. Result has 88 places, 147 transitions, 1745 flow [2021-03-24 13:29:07,252 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1745, PETRI_PLACES=88, PETRI_TRANSITIONS=147} [2021-03-24 13:29:07,252 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2021-03-24 13:29:07,253 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 147 transitions, 1745 flow [2021-03-24 13:29:07,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,253 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:07,253 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:07,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 13:29:07,253 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:07,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:07,254 INFO L82 PathProgramCache]: Analyzing trace with hash -145566226, now seen corresponding path program 7 times [2021-03-24 13:29:07,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:07,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613345373] [2021-03-24 13:29:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:07,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:07,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:07,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,354 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:07,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:07,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613345373] [2021-03-24 13:29:07,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:07,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:07,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993298086] [2021-03-24 13:29:07,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:07,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:07,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:07,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:07,364 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:07,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 147 transitions, 1745 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:07,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:07,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:07,563 INFO L129 PetriNetUnfolder]: 324/674 cut-off events. [2021-03-24 13:29:07,564 INFO L130 PetriNetUnfolder]: For 2838/2838 co-relation queries the response was YES. [2021-03-24 13:29:07,567 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4283 conditions, 674 events. 324/674 cut-off events. For 2838/2838 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3678 event pairs, 45 based on Foata normal form. 1/675 useless extension candidates. Maximal degree in co-relation 3918. Up to 507 conditions per place. [2021-03-24 13:29:07,571 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 107 selfloop transitions, 57 changer transitions 7/175 dead transitions. [2021-03-24 13:29:07,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 175 transitions, 2301 flow [2021-03-24 13:29:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2021-03-24 13:29:07,573 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59375 [2021-03-24 13:29:07,573 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2021-03-24 13:29:07,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2021-03-24 13:29:07,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:07,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2021-03-24 13:29:07,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,575 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,575 INFO L185 Difference]: Start difference. First operand has 88 places, 147 transitions, 1745 flow. Second operand 8 states and 247 transitions. [2021-03-24 13:29:07,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 175 transitions, 2301 flow [2021-03-24 13:29:07,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 175 transitions, 2234 flow, removed 31 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:07,596 INFO L241 Difference]: Finished difference. Result has 100 places, 160 transitions, 2016 flow [2021-03-24 13:29:07,597 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2016, PETRI_PLACES=100, PETRI_TRANSITIONS=160} [2021-03-24 13:29:07,597 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2021-03-24 13:29:07,597 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 160 transitions, 2016 flow [2021-03-24 13:29:07,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:07,598 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:07,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 13:29:07,598 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:07,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:07,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2079764660, now seen corresponding path program 8 times [2021-03-24 13:29:07,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:07,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082264279] [2021-03-24 13:29:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:07,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:07,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:07,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:07,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:07,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:07,720 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:07,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:07,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082264279] [2021-03-24 13:29:07,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:07,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:07,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006735381] [2021-03-24 13:29:07,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:07,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:07,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:07,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:07,727 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:07,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 160 transitions, 2016 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:07,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:07,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:07,985 INFO L129 PetriNetUnfolder]: 338/697 cut-off events. [2021-03-24 13:29:07,985 INFO L130 PetriNetUnfolder]: For 4038/4038 co-relation queries the response was YES. [2021-03-24 13:29:07,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 697 events. 338/697 cut-off events. For 4038/4038 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3841 event pairs, 45 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 4769. Up to 514 conditions per place. [2021-03-24 13:29:07,993 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 107 selfloop transitions, 77 changer transitions 4/192 dead transitions. [2021-03-24 13:29:07,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 192 transitions, 2686 flow [2021-03-24 13:29:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:07,995 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:07,995 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:07,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:07,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:07,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:07,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,997 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:07,997 INFO L185 Difference]: Start difference. First operand has 100 places, 160 transitions, 2016 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:07,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 192 transitions, 2686 flow [2021-03-24 13:29:08,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 192 transitions, 2652 flow, removed 17 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:08,025 INFO L241 Difference]: Finished difference. Result has 113 places, 180 transitions, 2458 flow [2021-03-24 13:29:08,025 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2458, PETRI_PLACES=113, PETRI_TRANSITIONS=180} [2021-03-24 13:29:08,025 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2021-03-24 13:29:08,025 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 180 transitions, 2458 flow [2021-03-24 13:29:08,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,025 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:08,026 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:08,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 13:29:08,026 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:08,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:08,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1144267264, now seen corresponding path program 9 times [2021-03-24 13:29:08,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:08,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971679272] [2021-03-24 13:29:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:08,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:08,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:08,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:08,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:08,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971679272] [2021-03-24 13:29:08,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:08,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:08,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784078963] [2021-03-24 13:29:08,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:08,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:08,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:08,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:08,129 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:08,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 180 transitions, 2458 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:08,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:08,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:08,372 INFO L129 PetriNetUnfolder]: 343/719 cut-off events. [2021-03-24 13:29:08,372 INFO L130 PetriNetUnfolder]: For 5519/5519 co-relation queries the response was YES. [2021-03-24 13:29:08,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5447 conditions, 719 events. 343/719 cut-off events. For 5519/5519 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4062 event pairs, 49 based on Foata normal form. 1/720 useless extension candidates. Maximal degree in co-relation 4978. Up to 394 conditions per place. [2021-03-24 13:29:08,382 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 81 selfloop transitions, 113 changer transitions 5/203 dead transitions. [2021-03-24 13:29:08,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 203 transitions, 3104 flow [2021-03-24 13:29:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:08,383 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:08,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:08,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:08,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:08,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:08,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,388 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,388 INFO L185 Difference]: Start difference. First operand has 113 places, 180 transitions, 2458 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:08,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 203 transitions, 3104 flow [2021-03-24 13:29:08,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 203 transitions, 2967 flow, removed 53 selfloop flow, removed 2 redundant places. [2021-03-24 13:29:08,420 INFO L241 Difference]: Finished difference. Result has 125 places, 189 transitions, 2855 flow [2021-03-24 13:29:08,421 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2855, PETRI_PLACES=125, PETRI_TRANSITIONS=189} [2021-03-24 13:29:08,421 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2021-03-24 13:29:08,421 INFO L480 AbstractCegarLoop]: Abstraction has has 125 places, 189 transitions, 2855 flow [2021-03-24 13:29:08,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,422 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:08,422 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:08,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 13:29:08,422 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:08,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:08,422 INFO L82 PathProgramCache]: Analyzing trace with hash 384612148, now seen corresponding path program 10 times [2021-03-24 13:29:08,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:08,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013190564] [2021-03-24 13:29:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:08,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:08,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:08,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:08,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,506 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:08,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:08,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013190564] [2021-03-24 13:29:08,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:08,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:08,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786645871] [2021-03-24 13:29:08,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:08,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:08,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:08,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:08,512 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:08,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 189 transitions, 2855 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:08,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:08,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:08,758 INFO L129 PetriNetUnfolder]: 347/729 cut-off events. [2021-03-24 13:29:08,758 INFO L130 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2021-03-24 13:29:08,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6082 conditions, 729 events. 347/729 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4120 event pairs, 47 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 5974. Up to 516 conditions per place. [2021-03-24 13:29:08,767 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 147 selfloop transitions, 65 changer transitions 9/225 dead transitions. [2021-03-24 13:29:08,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 225 transitions, 3761 flow [2021-03-24 13:29:08,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:08,769 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:08,769 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:08,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:08,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:08,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:08,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,771 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,771 INFO L185 Difference]: Start difference. First operand has 125 places, 189 transitions, 2855 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:08,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 225 transitions, 3761 flow [2021-03-24 13:29:08,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 225 transitions, 3531 flow, removed 30 selfloop flow, removed 6 redundant places. [2021-03-24 13:29:08,808 INFO L241 Difference]: Finished difference. Result has 132 places, 207 transitions, 3171 flow [2021-03-24 13:29:08,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3171, PETRI_PLACES=132, PETRI_TRANSITIONS=207} [2021-03-24 13:29:08,809 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2021-03-24 13:29:08,809 INFO L480 AbstractCegarLoop]: Abstraction has has 132 places, 207 transitions, 3171 flow [2021-03-24 13:29:08,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,809 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:08,809 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:08,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 13:29:08,809 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:08,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:08,810 INFO L82 PathProgramCache]: Analyzing trace with hash 803015152, now seen corresponding path program 11 times [2021-03-24 13:29:08,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:08,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114423242] [2021-03-24 13:29:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:08,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:08,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:08,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:08,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:08,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:08,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:08,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:08,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114423242] [2021-03-24 13:29:08,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:08,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:08,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136282772] [2021-03-24 13:29:08,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:08,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:08,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:08,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:08,887 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:08,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 207 transitions, 3171 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:08,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:08,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:08,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:09,145 INFO L129 PetriNetUnfolder]: 353/745 cut-off events. [2021-03-24 13:29:09,146 INFO L130 PetriNetUnfolder]: For 7092/7092 co-relation queries the response was YES. [2021-03-24 13:29:09,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 745 events. 353/745 cut-off events. For 7092/7092 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4313 event pairs, 53 based on Foata normal form. 1/746 useless extension candidates. Maximal degree in co-relation 6196. Up to 488 conditions per place. [2021-03-24 13:29:09,155 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 133 selfloop transitions, 99 changer transitions 4/240 dead transitions. [2021-03-24 13:29:09,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 240 transitions, 4041 flow [2021-03-24 13:29:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:09,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:09,157 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:09,157 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:09,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:09,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:09,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:09,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,159 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,159 INFO L185 Difference]: Start difference. First operand has 132 places, 207 transitions, 3171 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:09,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 240 transitions, 4041 flow [2021-03-24 13:29:09,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 240 transitions, 3857 flow, removed 38 selfloop flow, removed 6 redundant places. [2021-03-24 13:29:09,202 INFO L241 Difference]: Finished difference. Result has 140 places, 227 transitions, 3646 flow [2021-03-24 13:29:09,203 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2993, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3646, PETRI_PLACES=140, PETRI_TRANSITIONS=227} [2021-03-24 13:29:09,203 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2021-03-24 13:29:09,203 INFO L480 AbstractCegarLoop]: Abstraction has has 140 places, 227 transitions, 3646 flow [2021-03-24 13:29:09,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,203 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:09,203 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:09,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 13:29:09,204 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:09,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:09,204 INFO L82 PathProgramCache]: Analyzing trace with hash 795056576, now seen corresponding path program 12 times [2021-03-24 13:29:09,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:09,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610498236] [2021-03-24 13:29:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:09,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:09,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:09,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,268 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:09,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:09,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610498236] [2021-03-24 13:29:09,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:09,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:09,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363497625] [2021-03-24 13:29:09,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:09,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:09,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:09,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:09,272 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:09,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 227 transitions, 3646 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:09,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:09,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:09,501 INFO L129 PetriNetUnfolder]: 357/752 cut-off events. [2021-03-24 13:29:09,501 INFO L130 PetriNetUnfolder]: For 7274/7274 co-relation queries the response was YES. [2021-03-24 13:29:09,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6735 conditions, 752 events. 357/752 cut-off events. For 7274/7274 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4360 event pairs, 45 based on Foata normal form. 1/753 useless extension candidates. Maximal degree in co-relation 6624. Up to 603 conditions per place. [2021-03-24 13:29:09,511 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 181 selfloop transitions, 57 changer transitions 4/246 dead transitions. [2021-03-24 13:29:09,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 246 transitions, 4392 flow [2021-03-24 13:29:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2021-03-24 13:29:09,513 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5913461538461539 [2021-03-24 13:29:09,513 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 246 transitions. [2021-03-24 13:29:09,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 246 transitions. [2021-03-24 13:29:09,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:09,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 246 transitions. [2021-03-24 13:29:09,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.75) internal successors, (246), 8 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,516 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,516 INFO L185 Difference]: Start difference. First operand has 140 places, 227 transitions, 3646 flow. Second operand 8 states and 246 transitions. [2021-03-24 13:29:09,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 246 transitions, 4392 flow [2021-03-24 13:29:09,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 246 transitions, 4194 flow, removed 63 selfloop flow, removed 4 redundant places. [2021-03-24 13:29:09,564 INFO L241 Difference]: Finished difference. Result has 148 places, 235 transitions, 3813 flow [2021-03-24 13:29:09,564 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3472, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3813, PETRI_PLACES=148, PETRI_TRANSITIONS=235} [2021-03-24 13:29:09,564 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2021-03-24 13:29:09,564 INFO L480 AbstractCegarLoop]: Abstraction has has 148 places, 235 transitions, 3813 flow [2021-03-24 13:29:09,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,565 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:09,565 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:09,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 13:29:09,565 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash 50354078, now seen corresponding path program 13 times [2021-03-24 13:29:09,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:09,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870454065] [2021-03-24 13:29:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:09,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:09,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:09,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:09,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:09,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:09,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:09,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:09,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870454065] [2021-03-24 13:29:09,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:09,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:09,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892380716] [2021-03-24 13:29:09,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:09,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:09,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:09,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:09,657 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:09,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 235 transitions, 3813 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:09,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:09,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:09,948 INFO L129 PetriNetUnfolder]: 359/775 cut-off events. [2021-03-24 13:29:09,948 INFO L130 PetriNetUnfolder]: For 7710/7710 co-relation queries the response was YES. [2021-03-24 13:29:09,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6973 conditions, 775 events. 359/775 cut-off events. For 7710/7710 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4618 event pairs, 46 based on Foata normal form. 1/776 useless extension candidates. Maximal degree in co-relation 6858. Up to 596 conditions per place. [2021-03-24 13:29:09,966 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 170 selfloop transitions, 82 changer transitions 4/260 dead transitions. [2021-03-24 13:29:09,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 260 transitions, 4662 flow [2021-03-24 13:29:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:29:09,968 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:29:09,968 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:29:09,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:29:09,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:09,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:29:09,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,972 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:09,972 INFO L185 Difference]: Start difference. First operand has 148 places, 235 transitions, 3813 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:29:09,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 260 transitions, 4662 flow [2021-03-24 13:29:10,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 260 transitions, 4594 flow, removed 34 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:10,026 INFO L241 Difference]: Finished difference. Result has 162 places, 249 transitions, 4280 flow [2021-03-24 13:29:10,026 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3745, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4280, PETRI_PLACES=162, PETRI_TRANSITIONS=249} [2021-03-24 13:29:10,026 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2021-03-24 13:29:10,026 INFO L480 AbstractCegarLoop]: Abstraction has has 162 places, 249 transitions, 4280 flow [2021-03-24 13:29:10,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,027 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:10,027 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:10,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 13:29:10,027 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:10,027 INFO L82 PathProgramCache]: Analyzing trace with hash -568283468, now seen corresponding path program 14 times [2021-03-24 13:29:10,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:10,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911654831] [2021-03-24 13:29:10,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:10,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:10,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:10,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,105 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:10,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:10,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911654831] [2021-03-24 13:29:10,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:10,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:10,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216905366] [2021-03-24 13:29:10,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:10,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:10,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:10,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:10,109 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:10,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 249 transitions, 4280 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:10,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:10,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:10,366 INFO L129 PetriNetUnfolder]: 372/819 cut-off events. [2021-03-24 13:29:10,366 INFO L130 PetriNetUnfolder]: For 10426/10426 co-relation queries the response was YES. [2021-03-24 13:29:10,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7788 conditions, 819 events. 372/819 cut-off events. For 10426/10426 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5081 event pairs, 54 based on Foata normal form. 1/820 useless extension candidates. Maximal degree in co-relation 7661. Up to 586 conditions per place. [2021-03-24 13:29:10,377 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 203 selfloop transitions, 75 changer transitions 4/286 dead transitions. [2021-03-24 13:29:10,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 286 transitions, 5356 flow [2021-03-24 13:29:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:10,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:10,380 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:10,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:10,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:10,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:10,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,382 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,382 INFO L185 Difference]: Start difference. First operand has 162 places, 249 transitions, 4280 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:10,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 286 transitions, 5356 flow [2021-03-24 13:29:10,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 286 transitions, 5160 flow, removed 53 selfloop flow, removed 5 redundant places. [2021-03-24 13:29:10,450 INFO L241 Difference]: Finished difference. Result has 170 places, 273 transitions, 4799 flow [2021-03-24 13:29:10,450 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4112, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4799, PETRI_PLACES=170, PETRI_TRANSITIONS=273} [2021-03-24 13:29:10,450 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2021-03-24 13:29:10,450 INFO L480 AbstractCegarLoop]: Abstraction has has 170 places, 273 transitions, 4799 flow [2021-03-24 13:29:10,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,451 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:10,451 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:10,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 13:29:10,451 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:10,451 INFO L82 PathProgramCache]: Analyzing trace with hash 921121528, now seen corresponding path program 15 times [2021-03-24 13:29:10,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:10,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959289484] [2021-03-24 13:29:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:10,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:10,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:10,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:10,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:10,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:10,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959289484] [2021-03-24 13:29:10,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:10,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:10,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022237902] [2021-03-24 13:29:10,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:10,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:10,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:10,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:10,538 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:10,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 273 transitions, 4799 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:10,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:10,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:10,856 INFO L129 PetriNetUnfolder]: 382/845 cut-off events. [2021-03-24 13:29:10,857 INFO L130 PetriNetUnfolder]: For 11037/11037 co-relation queries the response was YES. [2021-03-24 13:29:10,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 845 events. 382/845 cut-off events. For 11037/11037 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5292 event pairs, 52 based on Foata normal form. 1/845 useless extension candidates. Maximal degree in co-relation 7589. Up to 576 conditions per place. [2021-03-24 13:29:10,871 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 183 selfloop transitions, 112 changer transitions 4/303 dead transitions. [2021-03-24 13:29:10,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 303 transitions, 5781 flow [2021-03-24 13:29:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:10,874 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:10,874 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:10,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:10,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:10,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:10,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,878 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,878 INFO L185 Difference]: Start difference. First operand has 170 places, 273 transitions, 4799 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:10,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 303 transitions, 5781 flow [2021-03-24 13:29:10,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 303 transitions, 5706 flow, removed 27 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:10,954 INFO L241 Difference]: Finished difference. Result has 184 places, 290 transitions, 5418 flow [2021-03-24 13:29:10,955 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4728, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5418, PETRI_PLACES=184, PETRI_TRANSITIONS=290} [2021-03-24 13:29:10,955 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2021-03-24 13:29:10,955 INFO L480 AbstractCegarLoop]: Abstraction has has 184 places, 290 transitions, 5418 flow [2021-03-24 13:29:10,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:10,955 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:10,955 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:10,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 13:29:10,956 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:10,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:10,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1339591152, now seen corresponding path program 16 times [2021-03-24 13:29:10,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:10,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346264833] [2021-03-24 13:29:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:10,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:10,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:10,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:11,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:11,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:11,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:11,036 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:11,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346264833] [2021-03-24 13:29:11,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:11,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:11,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082456605] [2021-03-24 13:29:11,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:11,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:11,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:11,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:11,043 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:11,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 290 transitions, 5418 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:11,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:11,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:11,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:11,359 INFO L129 PetriNetUnfolder]: 388/863 cut-off events. [2021-03-24 13:29:11,359 INFO L130 PetriNetUnfolder]: For 13534/13534 co-relation queries the response was YES. [2021-03-24 13:29:11,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9041 conditions, 863 events. 388/863 cut-off events. For 13534/13534 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5482 event pairs, 50 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 8898. Up to 664 conditions per place. [2021-03-24 13:29:11,373 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 231 selfloop transitions, 75 changer transitions 4/314 dead transitions. [2021-03-24 13:29:11,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 314 transitions, 6376 flow [2021-03-24 13:29:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:11,375 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:11,375 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:11,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:11,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:11,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:11,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:11,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:11,376 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:11,376 INFO L185 Difference]: Start difference. First operand has 184 places, 290 transitions, 5418 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:11,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 314 transitions, 6376 flow [2021-03-24 13:29:11,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 314 transitions, 6242 flow, removed 31 selfloop flow, removed 4 redundant places. [2021-03-24 13:29:11,482 INFO L241 Difference]: Finished difference. Result has 194 places, 302 transitions, 5778 flow [2021-03-24 13:29:11,483 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5294, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5778, PETRI_PLACES=194, PETRI_TRANSITIONS=302} [2021-03-24 13:29:11,483 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2021-03-24 13:29:11,483 INFO L480 AbstractCegarLoop]: Abstraction has has 194 places, 302 transitions, 5778 flow [2021-03-24 13:29:11,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:11,483 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:11,483 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:11,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 13:29:11,484 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:11,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:11,484 INFO L82 PathProgramCache]: Analyzing trace with hash -63223308, now seen corresponding path program 17 times [2021-03-24 13:29:11,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:11,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047429009] [2021-03-24 13:29:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:11,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:11,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:11,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:11,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:11,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:11,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:11,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:11,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:11,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:11,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:11,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:11,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047429009] [2021-03-24 13:29:11,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:11,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:11,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029711445] [2021-03-24 13:29:11,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:11,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:11,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:11,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:11,564 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:11,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 302 transitions, 5778 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:11,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:11,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:11,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:11,910 INFO L129 PetriNetUnfolder]: 387/869 cut-off events. [2021-03-24 13:29:11,910 INFO L130 PetriNetUnfolder]: For 14719/14719 co-relation queries the response was YES. [2021-03-24 13:29:11,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9430 conditions, 869 events. 387/869 cut-off events. For 14719/14719 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5598 event pairs, 57 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 9282. Up to 576 conditions per place. [2021-03-24 13:29:11,926 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 185 selfloop transitions, 127 changer transitions 5/321 dead transitions. [2021-03-24 13:29:11,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 321 transitions, 6726 flow [2021-03-24 13:29:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:11,927 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:11,927 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:11,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:11,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:11,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:11,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:11,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:11,929 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:11,929 INFO L185 Difference]: Start difference. First operand has 194 places, 302 transitions, 5778 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:11,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 321 transitions, 6726 flow [2021-03-24 13:29:12,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 321 transitions, 6626 flow, removed 45 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:12,050 INFO L241 Difference]: Finished difference. Result has 207 places, 308 transitions, 6283 flow [2021-03-24 13:29:12,050 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5678, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6283, PETRI_PLACES=207, PETRI_TRANSITIONS=308} [2021-03-24 13:29:12,050 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2021-03-24 13:29:12,050 INFO L480 AbstractCegarLoop]: Abstraction has has 207 places, 308 transitions, 6283 flow [2021-03-24 13:29:12,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:12,051 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:12,051 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:12,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 13:29:12,051 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:12,051 INFO L82 PathProgramCache]: Analyzing trace with hash 173439680, now seen corresponding path program 18 times [2021-03-24 13:29:12,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:12,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550967154] [2021-03-24 13:29:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:12,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:12,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:12,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:12,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550967154] [2021-03-24 13:29:12,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:12,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:12,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824946919] [2021-03-24 13:29:12,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:12,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:12,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:12,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:12,129 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:12,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 308 transitions, 6283 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:12,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:12,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:12,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:12,429 INFO L129 PetriNetUnfolder]: 397/910 cut-off events. [2021-03-24 13:29:12,429 INFO L130 PetriNetUnfolder]: For 19392/19392 co-relation queries the response was YES. [2021-03-24 13:29:12,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 910 events. 397/910 cut-off events. For 19392/19392 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6048 event pairs, 53 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 9314. Up to 663 conditions per place. [2021-03-24 13:29:12,443 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 266 selfloop transitions, 60 changer transitions 3/333 dead transitions. [2021-03-24 13:29:12,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 333 transitions, 7191 flow [2021-03-24 13:29:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:12,444 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:12,445 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:12,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:12,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:12,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:12,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:12,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:12,450 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:12,450 INFO L185 Difference]: Start difference. First operand has 207 places, 308 transitions, 6283 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:12,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 333 transitions, 7191 flow [2021-03-24 13:29:12,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 333 transitions, 6925 flow, removed 40 selfloop flow, removed 9 redundant places. [2021-03-24 13:29:12,603 INFO L241 Difference]: Finished difference. Result has 208 places, 321 transitions, 6314 flow [2021-03-24 13:29:12,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=6029, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6314, PETRI_PLACES=208, PETRI_TRANSITIONS=321} [2021-03-24 13:29:12,603 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2021-03-24 13:29:12,603 INFO L480 AbstractCegarLoop]: Abstraction has has 208 places, 321 transitions, 6314 flow [2021-03-24 13:29:12,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:12,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:12,604 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:12,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 13:29:12,604 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:12,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:12,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1001963588, now seen corresponding path program 19 times [2021-03-24 13:29:12,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:12,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956403632] [2021-03-24 13:29:12,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:12,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:12,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:12,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:12,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:12,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:12,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:12,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:12,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956403632] [2021-03-24 13:29:12,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:12,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:12,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123210369] [2021-03-24 13:29:12,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:12,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:12,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:12,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:12,692 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:12,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 321 transitions, 6314 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:12,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:12,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:12,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:13,041 INFO L129 PetriNetUnfolder]: 391/921 cut-off events. [2021-03-24 13:29:13,041 INFO L130 PetriNetUnfolder]: For 19063/19063 co-relation queries the response was YES. [2021-03-24 13:29:13,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10234 conditions, 921 events. 391/921 cut-off events. For 19063/19063 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6212 event pairs, 55 based on Foata normal form. 1/922 useless extension candidates. Maximal degree in co-relation 9260. Up to 583 conditions per place. [2021-03-24 13:29:13,055 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 195 selfloop transitions, 133 changer transitions 4/336 dead transitions. [2021-03-24 13:29:13,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 336 transitions, 7166 flow [2021-03-24 13:29:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:13,056 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:13,056 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:13,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:13,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:13,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:13,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,058 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,058 INFO L185 Difference]: Start difference. First operand has 208 places, 321 transitions, 6314 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:13,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 336 transitions, 7166 flow [2021-03-24 13:29:13,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 336 transitions, 7120 flow, removed 23 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:13,198 INFO L241 Difference]: Finished difference. Result has 220 places, 323 transitions, 6701 flow [2021-03-24 13:29:13,199 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=6268, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6701, PETRI_PLACES=220, PETRI_TRANSITIONS=323} [2021-03-24 13:29:13,199 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2021-03-24 13:29:13,199 INFO L480 AbstractCegarLoop]: Abstraction has has 220 places, 323 transitions, 6701 flow [2021-03-24 13:29:13,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,199 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:13,199 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:13,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 13:29:13,199 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:13,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:13,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1573418394, now seen corresponding path program 20 times [2021-03-24 13:29:13,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:13,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879500188] [2021-03-24 13:29:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:13,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:13,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:13,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:13,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:13,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:13,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:13,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879500188] [2021-03-24 13:29:13,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:13,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:13,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075231069] [2021-03-24 13:29:13,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:13,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:13,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:13,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:13,281 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:13,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 323 transitions, 6701 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:13,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:13,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:13,630 INFO L129 PetriNetUnfolder]: 395/953 cut-off events. [2021-03-24 13:29:13,630 INFO L130 PetriNetUnfolder]: For 19410/19410 co-relation queries the response was YES. [2021-03-24 13:29:13,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 953 events. 395/953 cut-off events. For 19410/19410 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 6597 event pairs, 60 based on Foata normal form. 1/954 useless extension candidates. Maximal degree in co-relation 10048. Up to 761 conditions per place. [2021-03-24 13:29:13,646 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 270 selfloop transitions, 90 changer transitions 13/377 dead transitions. [2021-03-24 13:29:13,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 377 transitions, 8843 flow [2021-03-24 13:29:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:29:13,647 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:29:13,647 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:29:13,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:29:13,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:13,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:29:13,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,649 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,649 INFO L185 Difference]: Start difference. First operand has 220 places, 323 transitions, 6701 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:29:13,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 377 transitions, 8843 flow [2021-03-24 13:29:13,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 377 transitions, 8643 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 13:29:13,823 INFO L241 Difference]: Finished difference. Result has 227 places, 357 transitions, 7836 flow [2021-03-24 13:29:13,823 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=6535, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7836, PETRI_PLACES=227, PETRI_TRANSITIONS=357} [2021-03-24 13:29:13,823 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2021-03-24 13:29:13,823 INFO L480 AbstractCegarLoop]: Abstraction has has 227 places, 357 transitions, 7836 flow [2021-03-24 13:29:13,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,824 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:13,824 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:13,824 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 13:29:13,824 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:13,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1418983758, now seen corresponding path program 21 times [2021-03-24 13:29:13,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:13,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237346578] [2021-03-24 13:29:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:13,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:13,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:13,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:13,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:13,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:13,898 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:13,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:13,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237346578] [2021-03-24 13:29:13,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:13,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:13,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273727415] [2021-03-24 13:29:13,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:13,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:13,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:13,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:13,902 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:13,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 357 transitions, 7836 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:13,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:13,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:13,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:14,269 INFO L129 PetriNetUnfolder]: 386/940 cut-off events. [2021-03-24 13:29:14,269 INFO L130 PetriNetUnfolder]: For 19739/19739 co-relation queries the response was YES. [2021-03-24 13:29:14,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11124 conditions, 940 events. 386/940 cut-off events. For 19739/19739 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 6573 event pairs, 60 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 10955. Up to 712 conditions per place. [2021-03-24 13:29:14,286 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 250 selfloop transitions, 128 changer transitions 11/393 dead transitions. [2021-03-24 13:29:14,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 393 transitions, 9188 flow [2021-03-24 13:29:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:14,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:29:14,287 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:29:14,287 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:29:14,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:29:14,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:14,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:29:14,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:14,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:14,289 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:14,289 INFO L185 Difference]: Start difference. First operand has 227 places, 357 transitions, 7836 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:29:14,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 393 transitions, 9188 flow [2021-03-24 13:29:14,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 393 transitions, 9005 flow, removed 45 selfloop flow, removed 3 redundant places. [2021-03-24 13:29:14,431 INFO L241 Difference]: Finished difference. Result has 237 places, 375 transitions, 8412 flow [2021-03-24 13:29:14,431 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=7655, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8412, PETRI_PLACES=237, PETRI_TRANSITIONS=375} [2021-03-24 13:29:14,431 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2021-03-24 13:29:14,431 INFO L480 AbstractCegarLoop]: Abstraction has has 237 places, 375 transitions, 8412 flow [2021-03-24 13:29:14,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:14,431 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:14,431 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:14,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 13:29:14,432 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:14,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:14,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1647183944, now seen corresponding path program 22 times [2021-03-24 13:29:14,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:14,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592232008] [2021-03-24 13:29:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:14,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:14,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:14,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:14,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:14,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:14,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:14,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:14,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:14,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:14,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:14,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:14,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:14,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:14,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:14,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:14,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:14,500 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:14,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:14,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592232008] [2021-03-24 13:29:14,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:14,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:14,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391788861] [2021-03-24 13:29:14,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:14,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:14,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:14,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:14,505 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:14,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 375 transitions, 8412 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:14,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:14,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:14,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:14,877 INFO L129 PetriNetUnfolder]: 378/937 cut-off events. [2021-03-24 13:29:14,877 INFO L130 PetriNetUnfolder]: For 21763/21763 co-relation queries the response was YES. [2021-03-24 13:29:14,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11358 conditions, 937 events. 378/937 cut-off events. For 21763/21763 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 6623 event pairs, 67 based on Foata normal form. 1/938 useless extension candidates. Maximal degree in co-relation 10203. Up to 722 conditions per place. [2021-03-24 13:29:14,893 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 256 selfloop transitions, 129 changer transitions 5/394 dead transitions. [2021-03-24 13:29:14,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 394 transitions, 9548 flow [2021-03-24 13:29:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 274 transitions. [2021-03-24 13:29:14,894 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5854700854700855 [2021-03-24 13:29:14,894 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 274 transitions. [2021-03-24 13:29:14,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 274 transitions. [2021-03-24 13:29:14,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:14,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 274 transitions. [2021-03-24 13:29:14,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.444444444444443) internal successors, (274), 9 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:14,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:14,896 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:14,896 INFO L185 Difference]: Start difference. First operand has 237 places, 375 transitions, 8412 flow. Second operand 9 states and 274 transitions. [2021-03-24 13:29:14,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 394 transitions, 9548 flow [2021-03-24 13:29:15,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 394 transitions, 9241 flow, removed 51 selfloop flow, removed 7 redundant places. [2021-03-24 13:29:15,063 INFO L241 Difference]: Finished difference. Result has 243 places, 383 transitions, 8703 flow [2021-03-24 13:29:15,063 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=8121, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8703, PETRI_PLACES=243, PETRI_TRANSITIONS=383} [2021-03-24 13:29:15,063 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2021-03-24 13:29:15,063 INFO L480 AbstractCegarLoop]: Abstraction has has 243 places, 383 transitions, 8703 flow [2021-03-24 13:29:15,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,064 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:15,064 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:15,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 13:29:15,064 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:15,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:15,064 INFO L82 PathProgramCache]: Analyzing trace with hash 29885990, now seen corresponding path program 23 times [2021-03-24 13:29:15,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:15,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205813875] [2021-03-24 13:29:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:15,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:15,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:15,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:15,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:15,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205813875] [2021-03-24 13:29:15,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:15,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:15,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255568354] [2021-03-24 13:29:15,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:15,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:15,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:15,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:15,129 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:15,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 383 transitions, 8703 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:15,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:15,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:15,396 INFO L129 PetriNetUnfolder]: 369/715 cut-off events. [2021-03-24 13:29:15,396 INFO L130 PetriNetUnfolder]: For 19198/19198 co-relation queries the response was YES. [2021-03-24 13:29:15,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8824 conditions, 715 events. 369/715 cut-off events. For 19198/19198 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 3906 event pairs, 25 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 8679. Up to 605 conditions per place. [2021-03-24 13:29:15,409 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 323 selfloop transitions, 70 changer transitions 9/406 dead transitions. [2021-03-24 13:29:15,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 406 transitions, 9813 flow [2021-03-24 13:29:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2021-03-24 13:29:15,410 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59375 [2021-03-24 13:29:15,410 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2021-03-24 13:29:15,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2021-03-24 13:29:15,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:15,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2021-03-24 13:29:15,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,412 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,412 INFO L185 Difference]: Start difference. First operand has 243 places, 383 transitions, 8703 flow. Second operand 8 states and 247 transitions. [2021-03-24 13:29:15,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 406 transitions, 9813 flow [2021-03-24 13:29:15,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 406 transitions, 9630 flow, removed 23 selfloop flow, removed 4 redundant places. [2021-03-24 13:29:15,545 INFO L241 Difference]: Finished difference. Result has 252 places, 389 transitions, 8867 flow [2021-03-24 13:29:15,545 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=8524, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8867, PETRI_PLACES=252, PETRI_TRANSITIONS=389} [2021-03-24 13:29:15,546 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2021-03-24 13:29:15,546 INFO L480 AbstractCegarLoop]: Abstraction has has 252 places, 389 transitions, 8867 flow [2021-03-24 13:29:15,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:15,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:15,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 13:29:15,546 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:15,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:15,546 INFO L82 PathProgramCache]: Analyzing trace with hash 465962972, now seen corresponding path program 24 times [2021-03-24 13:29:15,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:15,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910770230] [2021-03-24 13:29:15,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:15,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:15,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:15,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:15,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:15,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:15,604 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:15,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:15,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910770230] [2021-03-24 13:29:15,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:15,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:15,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390927905] [2021-03-24 13:29:15,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:15,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:15,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:15,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:15,608 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:15,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 389 transitions, 8867 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:15,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:15,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:15,885 INFO L129 PetriNetUnfolder]: 370/715 cut-off events. [2021-03-24 13:29:15,885 INFO L130 PetriNetUnfolder]: For 21640/21640 co-relation queries the response was YES. [2021-03-24 13:29:15,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9175 conditions, 715 events. 370/715 cut-off events. For 21640/21640 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 3873 event pairs, 25 based on Foata normal form. 1/716 useless extension candidates. Maximal degree in co-relation 9025. Up to 641 conditions per place. [2021-03-24 13:29:15,899 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 363 selfloop transitions, 51 changer transitions 0/418 dead transitions. [2021-03-24 13:29:15,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 418 transitions, 10144 flow [2021-03-24 13:29:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2021-03-24 13:29:15,900 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5913461538461539 [2021-03-24 13:29:15,900 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 246 transitions. [2021-03-24 13:29:15,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 246 transitions. [2021-03-24 13:29:15,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:15,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 246 transitions. [2021-03-24 13:29:15,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.75) internal successors, (246), 8 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,901 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:15,901 INFO L185 Difference]: Start difference. First operand has 252 places, 389 transitions, 8867 flow. Second operand 8 states and 246 transitions. [2021-03-24 13:29:15,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 418 transitions, 10144 flow [2021-03-24 13:29:16,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 418 transitions, 9900 flow, removed 69 selfloop flow, removed 5 redundant places. [2021-03-24 13:29:16,050 INFO L241 Difference]: Finished difference. Result has 258 places, 411 transitions, 9221 flow [2021-03-24 13:29:16,051 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=8693, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9221, PETRI_PLACES=258, PETRI_TRANSITIONS=411} [2021-03-24 13:29:16,051 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2021-03-24 13:29:16,051 INFO L480 AbstractCegarLoop]: Abstraction has has 258 places, 411 transitions, 9221 flow [2021-03-24 13:29:16,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:16,051 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:16,051 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:16,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 13:29:16,051 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:16,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1588985890, now seen corresponding path program 25 times [2021-03-24 13:29:16,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:16,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646794970] [2021-03-24 13:29:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:16,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:16,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,109 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:16,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:16,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646794970] [2021-03-24 13:29:16,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:16,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:16,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321170398] [2021-03-24 13:29:16,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:16,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:16,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:16,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:16,112 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:16,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 411 transitions, 9221 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:16,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:16,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:16,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:16,409 INFO L129 PetriNetUnfolder]: 385/760 cut-off events. [2021-03-24 13:29:16,409 INFO L130 PetriNetUnfolder]: For 23360/23360 co-relation queries the response was YES. [2021-03-24 13:29:16,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9547 conditions, 760 events. 385/760 cut-off events. For 23360/23360 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 4266 event pairs, 20 based on Foata normal form. 1/761 useless extension candidates. Maximal degree in co-relation 9395. Up to 591 conditions per place. [2021-03-24 13:29:16,425 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 349 selfloop transitions, 77 changer transitions 10/440 dead transitions. [2021-03-24 13:29:16,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 440 transitions, 10464 flow [2021-03-24 13:29:16,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:16,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:16,426 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:16,426 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:16,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:16,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:16,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:16,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:16,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:16,428 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:16,428 INFO L185 Difference]: Start difference. First operand has 258 places, 411 transitions, 9221 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:16,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 440 transitions, 10464 flow [2021-03-24 13:29:16,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 440 transitions, 10274 flow, removed 95 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:16,628 INFO L241 Difference]: Finished difference. Result has 269 places, 421 transitions, 9339 flow [2021-03-24 13:29:16,629 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=9031, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9339, PETRI_PLACES=269, PETRI_TRANSITIONS=421} [2021-03-24 13:29:16,629 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2021-03-24 13:29:16,629 INFO L480 AbstractCegarLoop]: Abstraction has has 269 places, 421 transitions, 9339 flow [2021-03-24 13:29:16,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:16,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:16,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:16,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-24 13:29:16,629 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:16,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:16,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1722314488, now seen corresponding path program 26 times [2021-03-24 13:29:16,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:16,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814160757] [2021-03-24 13:29:16,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:16,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:16,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:16,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:16,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:16,721 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:16,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:16,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814160757] [2021-03-24 13:29:16,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:16,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:16,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310386291] [2021-03-24 13:29:16,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:16,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:16,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:16,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:16,725 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:16,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 421 transitions, 9339 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:16,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:16,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:16,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:17,045 INFO L129 PetriNetUnfolder]: 378/753 cut-off events. [2021-03-24 13:29:17,045 INFO L130 PetriNetUnfolder]: For 23744/23744 co-relation queries the response was YES. [2021-03-24 13:29:17,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 753 events. 378/753 cut-off events. For 23744/23744 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 4243 event pairs, 24 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 9378. Up to 557 conditions per place. [2021-03-24 13:29:17,058 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 305 selfloop transitions, 97 changer transitions 32/438 dead transitions. [2021-03-24 13:29:17,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 438 transitions, 10539 flow [2021-03-24 13:29:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:17,059 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:17,059 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:17,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:17,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:17,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:17,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,061 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,061 INFO L185 Difference]: Start difference. First operand has 269 places, 421 transitions, 9339 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:17,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 438 transitions, 10539 flow [2021-03-24 13:29:17,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 438 transitions, 10430 flow, removed 42 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:17,266 INFO L241 Difference]: Finished difference. Result has 283 places, 397 transitions, 9102 flow [2021-03-24 13:29:17,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=9230, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9102, PETRI_PLACES=283, PETRI_TRANSITIONS=397} [2021-03-24 13:29:17,267 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2021-03-24 13:29:17,267 INFO L480 AbstractCegarLoop]: Abstraction has has 283 places, 397 transitions, 9102 flow [2021-03-24 13:29:17,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:17,267 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:17,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-24 13:29:17,267 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:17,268 INFO L82 PathProgramCache]: Analyzing trace with hash -965819354, now seen corresponding path program 27 times [2021-03-24 13:29:17,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:17,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720487619] [2021-03-24 13:29:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:17,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:17,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:17,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,327 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:17,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:17,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720487619] [2021-03-24 13:29:17,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:17,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:17,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891919095] [2021-03-24 13:29:17,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:17,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:17,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:17,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:17,331 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:17,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 397 transitions, 9102 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:17,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:17,332 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:17,619 INFO L129 PetriNetUnfolder]: 371/732 cut-off events. [2021-03-24 13:29:17,619 INFO L130 PetriNetUnfolder]: For 25556/25556 co-relation queries the response was YES. [2021-03-24 13:29:17,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9620 conditions, 732 events. 371/732 cut-off events. For 25556/25556 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 4050 event pairs, 18 based on Foata normal form. 1/733 useless extension candidates. Maximal degree in co-relation 9451. Up to 598 conditions per place. [2021-03-24 13:29:17,633 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 348 selfloop transitions, 65 changer transitions 6/423 dead transitions. [2021-03-24 13:29:17,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 423 transitions, 10386 flow [2021-03-24 13:29:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:17,634 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:17,634 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:17,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:17,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:17,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:17,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,635 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,635 INFO L185 Difference]: Start difference. First operand has 283 places, 397 transitions, 9102 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:17,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 423 transitions, 10386 flow [2021-03-24 13:29:17,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 423 transitions, 9594 flow, removed 33 selfloop flow, removed 35 redundant places. [2021-03-24 13:29:17,820 INFO L241 Difference]: Finished difference. Result has 261 places, 408 transitions, 8806 flow [2021-03-24 13:29:17,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=8368, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8806, PETRI_PLACES=261, PETRI_TRANSITIONS=408} [2021-03-24 13:29:17,821 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2021-03-24 13:29:17,821 INFO L480 AbstractCegarLoop]: Abstraction has has 261 places, 408 transitions, 8806 flow [2021-03-24 13:29:17,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,821 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:17,821 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:17,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-24 13:29:17,822 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:17,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:17,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2104977856, now seen corresponding path program 28 times [2021-03-24 13:29:17,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:17,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463859979] [2021-03-24 13:29:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:17,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:17,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:17,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:17,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:17,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:17,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:17,907 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:17,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:17,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463859979] [2021-03-24 13:29:17,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:17,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:17,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355985192] [2021-03-24 13:29:17,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:17,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:17,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:17,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:17,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:17,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 408 transitions, 8806 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:17,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:17,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:17,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:18,278 INFO L129 PetriNetUnfolder]: 376/745 cut-off events. [2021-03-24 13:29:18,278 INFO L130 PetriNetUnfolder]: For 22142/22142 co-relation queries the response was YES. [2021-03-24 13:29:18,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9366 conditions, 745 events. 376/745 cut-off events. For 22142/22142 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 4172 event pairs, 29 based on Foata normal form. 1/746 useless extension candidates. Maximal degree in co-relation 9216. Up to 554 conditions per place. [2021-03-24 13:29:18,291 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 269 selfloop transitions, 141 changer transitions 21/435 dead transitions. [2021-03-24 13:29:18,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 435 transitions, 10254 flow [2021-03-24 13:29:18,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:29:18,293 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:29:18,293 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:29:18,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:29:18,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:18,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:29:18,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:18,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:18,294 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:18,294 INFO L185 Difference]: Start difference. First operand has 261 places, 408 transitions, 8806 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:29:18,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 435 transitions, 10254 flow [2021-03-24 13:29:18,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 435 transitions, 10082 flow, removed 65 selfloop flow, removed 3 redundant places. [2021-03-24 13:29:18,500 INFO L241 Difference]: Finished difference. Result has 270 places, 405 transitions, 9121 flow [2021-03-24 13:29:18,501 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=8640, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9121, PETRI_PLACES=270, PETRI_TRANSITIONS=405} [2021-03-24 13:29:18,501 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2021-03-24 13:29:18,501 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 405 transitions, 9121 flow [2021-03-24 13:29:18,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:18,501 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:18,501 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:18,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-24 13:29:18,502 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:18,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:18,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1084537344, now seen corresponding path program 29 times [2021-03-24 13:29:18,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:18,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076939677] [2021-03-24 13:29:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:18,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:18,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:18,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:18,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:18,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:18,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:18,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:18,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:18,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:18,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:18,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:18,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:18,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:18,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:18,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:18,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:18,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:18,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:18,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076939677] [2021-03-24 13:29:18,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:18,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:18,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573026155] [2021-03-24 13:29:18,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:18,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:18,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:18,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:18,570 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:18,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 405 transitions, 9121 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:18,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:18,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:18,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:18,861 INFO L129 PetriNetUnfolder]: 373/746 cut-off events. [2021-03-24 13:29:18,861 INFO L130 PetriNetUnfolder]: For 22754/22754 co-relation queries the response was YES. [2021-03-24 13:29:18,870 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9554 conditions, 746 events. 373/746 cut-off events. For 22754/22754 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 4221 event pairs, 24 based on Foata normal form. 1/747 useless extension candidates. Maximal degree in co-relation 9401. Up to 621 conditions per place. [2021-03-24 13:29:18,874 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 362 selfloop transitions, 61 changer transitions 7/434 dead transitions. [2021-03-24 13:29:18,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 434 transitions, 10418 flow [2021-03-24 13:29:18,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:18,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:18,876 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:18,877 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:18,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:18,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:18,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:18,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:18,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:18,878 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:18,878 INFO L185 Difference]: Start difference. First operand has 270 places, 405 transitions, 9121 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:18,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 434 transitions, 10418 flow [2021-03-24 13:29:19,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 434 transitions, 10109 flow, removed 127 selfloop flow, removed 3 redundant places. [2021-03-24 13:29:19,039 INFO L241 Difference]: Finished difference. Result has 280 places, 418 transitions, 9279 flow [2021-03-24 13:29:19,039 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=8816, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9279, PETRI_PLACES=280, PETRI_TRANSITIONS=418} [2021-03-24 13:29:19,040 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2021-03-24 13:29:19,040 INFO L480 AbstractCegarLoop]: Abstraction has has 280 places, 418 transitions, 9279 flow [2021-03-24 13:29:19,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:19,040 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:19,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-24 13:29:19,040 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1095040448, now seen corresponding path program 30 times [2021-03-24 13:29:19,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:19,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653090113] [2021-03-24 13:29:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:19,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:19,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:19,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:19,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:19,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653090113] [2021-03-24 13:29:19,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:19,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:19,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287797266] [2021-03-24 13:29:19,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:19,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:19,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:19,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:19,107 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:19,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 418 transitions, 9279 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:19,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:19,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:19,377 INFO L129 PetriNetUnfolder]: 375/763 cut-off events. [2021-03-24 13:29:19,377 INFO L130 PetriNetUnfolder]: For 25369/25369 co-relation queries the response was YES. [2021-03-24 13:29:19,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9912 conditions, 763 events. 375/763 cut-off events. For 25369/25369 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 4406 event pairs, 34 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 9753. Up to 534 conditions per place. [2021-03-24 13:29:19,386 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 303 selfloop transitions, 125 changer transitions 7/439 dead transitions. [2021-03-24 13:29:19,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 439 transitions, 10515 flow [2021-03-24 13:29:19,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:29:19,389 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:29:19,389 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:29:19,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:29:19,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:19,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:29:19,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,390 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,390 INFO L185 Difference]: Start difference. First operand has 280 places, 418 transitions, 9279 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:29:19,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 439 transitions, 10515 flow [2021-03-24 13:29:19,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 439 transitions, 10312 flow, removed 68 selfloop flow, removed 4 redundant places. [2021-03-24 13:29:19,541 INFO L241 Difference]: Finished difference. Result has 290 places, 422 transitions, 9621 flow [2021-03-24 13:29:19,541 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=9078, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9621, PETRI_PLACES=290, PETRI_TRANSITIONS=422} [2021-03-24 13:29:19,541 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2021-03-24 13:29:19,541 INFO L480 AbstractCegarLoop]: Abstraction has has 290 places, 422 transitions, 9621 flow [2021-03-24 13:29:19,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,541 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:19,541 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:19,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-24 13:29:19,542 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:19,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1884612166, now seen corresponding path program 31 times [2021-03-24 13:29:19,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:19,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955719341] [2021-03-24 13:29:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:19,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:19,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:19,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:19,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:19,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:19,618 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:19,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:19,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955719341] [2021-03-24 13:29:19,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:19,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:19,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792379010] [2021-03-24 13:29:19,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:19,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:19,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:19,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:19,622 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:19,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 422 transitions, 9621 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:19,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:19,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:19,920 INFO L129 PetriNetUnfolder]: 368/752 cut-off events. [2021-03-24 13:29:19,920 INFO L130 PetriNetUnfolder]: For 25238/25238 co-relation queries the response was YES. [2021-03-24 13:29:19,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10078 conditions, 752 events. 368/752 cut-off events. For 25238/25238 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 4362 event pairs, 36 based on Foata normal form. 1/753 useless extension candidates. Maximal degree in co-relation 9913. Up to 507 conditions per place. [2021-03-24 13:29:19,930 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 258 selfloop transitions, 164 changer transitions 14/440 dead transitions. [2021-03-24 13:29:19,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 440 transitions, 10889 flow [2021-03-24 13:29:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:29:19,931 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:29:19,931 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:29:19,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:29:19,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:19,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:29:19,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,933 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:19,933 INFO L185 Difference]: Start difference. First operand has 290 places, 422 transitions, 9621 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:29:19,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 440 transitions, 10889 flow [2021-03-24 13:29:20,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 440 transitions, 10681 flow, removed 35 selfloop flow, removed 6 redundant places. [2021-03-24 13:29:20,112 INFO L241 Difference]: Finished difference. Result has 300 places, 416 transitions, 9880 flow [2021-03-24 13:29:20,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=9417, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9880, PETRI_PLACES=300, PETRI_TRANSITIONS=416} [2021-03-24 13:29:20,112 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2021-03-24 13:29:20,113 INFO L480 AbstractCegarLoop]: Abstraction has has 300 places, 416 transitions, 9880 flow [2021-03-24 13:29:20,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:20,113 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:20,113 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:20,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-24 13:29:20,113 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:20,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1557618314, now seen corresponding path program 32 times [2021-03-24 13:29:20,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:20,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135167604] [2021-03-24 13:29:20,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:20,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:20,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:20,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:20,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:20,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:20,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:20,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:20,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:20,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:20,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:20,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135167604] [2021-03-24 13:29:20,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:20,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:20,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911361318] [2021-03-24 13:29:20,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:20,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:20,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:20,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:20,180 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:20,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 416 transitions, 9880 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:20,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:20,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:20,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:20,463 INFO L129 PetriNetUnfolder]: 395/803 cut-off events. [2021-03-24 13:29:20,463 INFO L130 PetriNetUnfolder]: For 30175/30175 co-relation queries the response was YES. [2021-03-24 13:29:20,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10985 conditions, 803 events. 395/803 cut-off events. For 30175/30175 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 4664 event pairs, 26 based on Foata normal form. 1/804 useless extension candidates. Maximal degree in co-relation 10814. Up to 689 conditions per place. [2021-03-24 13:29:20,476 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 388 selfloop transitions, 62 changer transitions 1/455 dead transitions. [2021-03-24 13:29:20,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 455 transitions, 11531 flow [2021-03-24 13:29:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:20,477 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:20,477 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:20,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:20,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:20,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:20,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:20,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:20,479 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:20,479 INFO L185 Difference]: Start difference. First operand has 300 places, 416 transitions, 9880 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:20,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 455 transitions, 11531 flow [2021-03-24 13:29:20,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 455 transitions, 10882 flow, removed 30 selfloop flow, removed 18 redundant places. [2021-03-24 13:29:20,726 INFO L241 Difference]: Finished difference. Result has 295 places, 446 transitions, 10136 flow [2021-03-24 13:29:20,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=9271, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10136, PETRI_PLACES=295, PETRI_TRANSITIONS=446} [2021-03-24 13:29:20,727 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2021-03-24 13:29:20,727 INFO L480 AbstractCegarLoop]: Abstraction has has 295 places, 446 transitions, 10136 flow [2021-03-24 13:29:20,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:20,727 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:20,727 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:20,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-24 13:29:20,728 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:20,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:20,728 INFO L82 PathProgramCache]: Analyzing trace with hash 240820316, now seen corresponding path program 33 times [2021-03-24 13:29:20,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:20,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959859574] [2021-03-24 13:29:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:20,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:20,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:20,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:20,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:20,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:20,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:20,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:20,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:20,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:20,790 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:20,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:20,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:20,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959859574] [2021-03-24 13:29:20,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:20,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:20,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103726744] [2021-03-24 13:29:20,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:20,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:20,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:20,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:20,795 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:20,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 446 transitions, 10136 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:20,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:20,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:20,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:21,157 INFO L129 PetriNetUnfolder]: 402/830 cut-off events. [2021-03-24 13:29:21,158 INFO L130 PetriNetUnfolder]: For 29180/29180 co-relation queries the response was YES. [2021-03-24 13:29:21,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10943 conditions, 830 events. 402/830 cut-off events. For 29180/29180 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 4894 event pairs, 28 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 10776. Up to 651 conditions per place. [2021-03-24 13:29:21,172 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 360 selfloop transitions, 103 changer transitions 3/470 dead transitions. [2021-03-24 13:29:21,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 470 transitions, 11578 flow [2021-03-24 13:29:21,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:21,173 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:21,174 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:21,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:21,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:21,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:21,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:21,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:21,175 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:21,175 INFO L185 Difference]: Start difference. First operand has 295 places, 446 transitions, 10136 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:21,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 470 transitions, 11578 flow [2021-03-24 13:29:21,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 470 transitions, 11268 flow, removed 155 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:21,445 INFO L241 Difference]: Finished difference. Result has 305 places, 458 transitions, 10484 flow [2021-03-24 13:29:21,445 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=9826, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10484, PETRI_PLACES=305, PETRI_TRANSITIONS=458} [2021-03-24 13:29:21,445 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2021-03-24 13:29:21,445 INFO L480 AbstractCegarLoop]: Abstraction has has 305 places, 458 transitions, 10484 flow [2021-03-24 13:29:21,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:21,445 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:21,445 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:21,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-24 13:29:21,446 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:21,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:21,446 INFO L82 PathProgramCache]: Analyzing trace with hash 8022378, now seen corresponding path program 34 times [2021-03-24 13:29:21,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:21,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161834097] [2021-03-24 13:29:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:21,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:21,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:21,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:21,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:21,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:21,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:21,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:21,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:21,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:21,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:21,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:21,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:21,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:21,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:21,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:21,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:21,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:21,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:21,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161834097] [2021-03-24 13:29:21,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:21,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:21,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173022811] [2021-03-24 13:29:21,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:21,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:21,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:21,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:21,517 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:21,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 458 transitions, 10484 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:21,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:21,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:21,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:21,829 INFO L129 PetriNetUnfolder]: 407/834 cut-off events. [2021-03-24 13:29:21,830 INFO L130 PetriNetUnfolder]: For 29307/29307 co-relation queries the response was YES. [2021-03-24 13:29:21,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11148 conditions, 834 events. 407/834 cut-off events. For 29307/29307 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 4919 event pairs, 26 based on Foata normal form. 1/835 useless extension candidates. Maximal degree in co-relation 10975. Up to 706 conditions per place. [2021-03-24 13:29:21,840 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 417 selfloop transitions, 63 changer transitions 5/489 dead transitions. [2021-03-24 13:29:21,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 489 transitions, 12020 flow [2021-03-24 13:29:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2021-03-24 13:29:21,841 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59375 [2021-03-24 13:29:21,841 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2021-03-24 13:29:21,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2021-03-24 13:29:21,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:21,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2021-03-24 13:29:21,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:21,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:21,842 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:21,842 INFO L185 Difference]: Start difference. First operand has 305 places, 458 transitions, 10484 flow. Second operand 8 states and 247 transitions. [2021-03-24 13:29:21,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 489 transitions, 12020 flow [2021-03-24 13:29:22,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 489 transitions, 11788 flow, removed 104 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:22,126 INFO L241 Difference]: Finished difference. Result has 317 places, 476 transitions, 10915 flow [2021-03-24 13:29:22,126 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=10254, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10915, PETRI_PLACES=317, PETRI_TRANSITIONS=476} [2021-03-24 13:29:22,128 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2021-03-24 13:29:22,128 INFO L480 AbstractCegarLoop]: Abstraction has has 317 places, 476 transitions, 10915 flow [2021-03-24 13:29:22,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:22,128 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:22,128 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:22,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-24 13:29:22,129 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash 579477184, now seen corresponding path program 35 times [2021-03-24 13:29:22,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:22,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467256981] [2021-03-24 13:29:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:22,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:22,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:22,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:22,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:22,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:22,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:22,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:22,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:22,208 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:22,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:22,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467256981] [2021-03-24 13:29:22,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:22,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:22,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932860943] [2021-03-24 13:29:22,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:22,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:22,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:22,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:22,213 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:22,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 476 transitions, 10915 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:22,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:22,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:22,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:22,530 INFO L129 PetriNetUnfolder]: 417/865 cut-off events. [2021-03-24 13:29:22,530 INFO L130 PetriNetUnfolder]: For 32441/32441 co-relation queries the response was YES. [2021-03-24 13:29:22,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11738 conditions, 865 events. 417/865 cut-off events. For 32441/32441 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5153 event pairs, 30 based on Foata normal form. 1/865 useless extension candidates. Maximal degree in co-relation 11557. Up to 712 conditions per place. [2021-03-24 13:29:22,544 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 417 selfloop transitions, 90 changer transitions 1/512 dead transitions. [2021-03-24 13:29:22,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 512 transitions, 12690 flow [2021-03-24 13:29:22,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:22,545 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:22,545 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:22,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:22,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:22,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:22,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:22,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:22,546 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:22,546 INFO L185 Difference]: Start difference. First operand has 317 places, 476 transitions, 10915 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:22,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 512 transitions, 12690 flow [2021-03-24 13:29:22,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 512 transitions, 12490 flow, removed 100 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:22,796 INFO L241 Difference]: Finished difference. Result has 330 places, 503 transitions, 11704 flow [2021-03-24 13:29:22,796 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=10715, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11704, PETRI_PLACES=330, PETRI_TRANSITIONS=503} [2021-03-24 13:29:22,796 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2021-03-24 13:29:22,796 INFO L480 AbstractCegarLoop]: Abstraction has has 330 places, 503 transitions, 11704 flow [2021-03-24 13:29:22,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:22,797 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:22,797 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:22,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-24 13:29:22,797 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:22,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:22,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1989416008, now seen corresponding path program 36 times [2021-03-24 13:29:22,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:22,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677297068] [2021-03-24 13:29:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:22,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:22,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:22,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:22,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:22,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:22,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:22,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:22,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:22,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:22,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:22,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:22,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677297068] [2021-03-24 13:29:22,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:22,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:22,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047677092] [2021-03-24 13:29:22,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:22,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:22,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:22,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:22,868 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:22,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 503 transitions, 11704 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:22,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:22,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:22,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:23,224 INFO L129 PetriNetUnfolder]: 426/890 cut-off events. [2021-03-24 13:29:23,225 INFO L130 PetriNetUnfolder]: For 34936/34936 co-relation queries the response was YES. [2021-03-24 13:29:23,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12302 conditions, 890 events. 426/890 cut-off events. For 34936/34936 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 5397 event pairs, 34 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 12112. Up to 724 conditions per place. [2021-03-24 13:29:23,237 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 445 selfloop transitions, 101 changer transitions 12/562 dead transitions. [2021-03-24 13:29:23,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 562 transitions, 14178 flow [2021-03-24 13:29:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:23,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:23,238 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:23,238 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:23,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:23,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:23,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:23,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:23,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:23,240 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:23,240 INFO L185 Difference]: Start difference. First operand has 330 places, 503 transitions, 11704 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:23,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 562 transitions, 14178 flow [2021-03-24 13:29:23,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 562 transitions, 13796 flow, removed 191 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:23,529 INFO L241 Difference]: Finished difference. Result has 344 places, 541 transitions, 12683 flow [2021-03-24 13:29:23,529 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=11354, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12683, PETRI_PLACES=344, PETRI_TRANSITIONS=541} [2021-03-24 13:29:23,529 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2021-03-24 13:29:23,530 INFO L480 AbstractCegarLoop]: Abstraction has has 344 places, 541 transitions, 12683 flow [2021-03-24 13:29:23,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:23,530 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:23,530 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:23,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-24 13:29:23,530 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:23,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:23,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1552890214, now seen corresponding path program 37 times [2021-03-24 13:29:23,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:23,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16894902] [2021-03-24 13:29:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:23,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:23,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:23,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:23,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:23,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:23,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:23,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:23,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:23,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:23,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:23,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:23,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:23,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:23,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:23,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:23,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:23,595 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:23,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:23,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16894902] [2021-03-24 13:29:23,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:23,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:23,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869661124] [2021-03-24 13:29:23,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:23,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:23,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:23,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:23,598 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:23,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 541 transitions, 12683 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:23,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:23,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:23,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:23,925 INFO L129 PetriNetUnfolder]: 428/895 cut-off events. [2021-03-24 13:29:23,925 INFO L130 PetriNetUnfolder]: For 34237/34237 co-relation queries the response was YES. [2021-03-24 13:29:23,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12377 conditions, 895 events. 428/895 cut-off events. For 34237/34237 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 5447 event pairs, 29 based on Foata normal form. 1/896 useless extension candidates. Maximal degree in co-relation 12177. Up to 756 conditions per place. [2021-03-24 13:29:23,937 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 477 selfloop transitions, 91 changer transitions 1/573 dead transitions. [2021-03-24 13:29:23,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 573 transitions, 14581 flow [2021-03-24 13:29:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:29:23,938 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:29:23,938 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:29:23,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:29:23,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:23,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:29:23,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:23,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:23,939 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:23,939 INFO L185 Difference]: Start difference. First operand has 344 places, 541 transitions, 12683 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:29:23,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 573 transitions, 14581 flow [2021-03-24 13:29:24,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 573 transitions, 14191 flow, removed 195 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:24,246 INFO L241 Difference]: Finished difference. Result has 358 places, 565 transitions, 13309 flow [2021-03-24 13:29:24,246 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=12295, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13309, PETRI_PLACES=358, PETRI_TRANSITIONS=565} [2021-03-24 13:29:24,247 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2021-03-24 13:29:24,247 INFO L480 AbstractCegarLoop]: Abstraction has has 358 places, 565 transitions, 13309 flow [2021-03-24 13:29:24,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:24,247 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:24,247 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:24,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-24 13:29:24,247 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:24,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:24,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1568351010, now seen corresponding path program 38 times [2021-03-24 13:29:24,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:24,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769962388] [2021-03-24 13:29:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:24,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:24,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:24,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:24,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:24,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:24,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:24,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:24,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:24,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:24,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:24,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:24,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:24,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:24,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:24,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:24,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:24,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:24,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:24,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769962388] [2021-03-24 13:29:24,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:24,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:24,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085854441] [2021-03-24 13:29:24,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:24,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:24,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:24,313 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:24,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 565 transitions, 13309 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:24,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:24,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:24,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:24,675 INFO L129 PetriNetUnfolder]: 459/980 cut-off events. [2021-03-24 13:29:24,675 INFO L130 PetriNetUnfolder]: For 37269/37269 co-relation queries the response was YES. [2021-03-24 13:29:24,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13396 conditions, 980 events. 459/980 cut-off events. For 37269/37269 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 6159 event pairs, 33 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 13186. Up to 768 conditions per place. [2021-03-24 13:29:24,690 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 500 selfloop transitions, 128 changer transitions 2/634 dead transitions. [2021-03-24 13:29:24,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 634 transitions, 15937 flow [2021-03-24 13:29:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:24,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:24,691 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:24,691 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:24,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:24,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:24,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:24,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:24,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:24,692 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:24,692 INFO L185 Difference]: Start difference. First operand has 358 places, 565 transitions, 13309 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:24,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 634 transitions, 15937 flow [2021-03-24 13:29:24,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 634 transitions, 15676 flow, removed 112 selfloop flow, removed 2 redundant places. [2021-03-24 13:29:24,994 INFO L241 Difference]: Finished difference. Result has 371 places, 623 transitions, 14861 flow [2021-03-24 13:29:24,994 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=13054, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14861, PETRI_PLACES=371, PETRI_TRANSITIONS=623} [2021-03-24 13:29:24,994 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2021-03-24 13:29:24,995 INFO L480 AbstractCegarLoop]: Abstraction has has 371 places, 623 transitions, 14861 flow [2021-03-24 13:29:24,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:24,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:24,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:24,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-24 13:29:24,995 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1019791176, now seen corresponding path program 39 times [2021-03-24 13:29:24,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:24,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070342153] [2021-03-24 13:29:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:25,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:25,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:25,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:25,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:25,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:25,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:25,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:25,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:25,076 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:25,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:25,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070342153] [2021-03-24 13:29:25,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:25,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:25,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729812818] [2021-03-24 13:29:25,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:25,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:25,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:25,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:25,079 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:25,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 623 transitions, 14861 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:25,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:25,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:25,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:25,487 INFO L129 PetriNetUnfolder]: 459/991 cut-off events. [2021-03-24 13:29:25,487 INFO L130 PetriNetUnfolder]: For 39511/39511 co-relation queries the response was YES. [2021-03-24 13:29:25,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13895 conditions, 991 events. 459/991 cut-off events. For 39511/39511 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6277 event pairs, 32 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 13677. Up to 803 conditions per place. [2021-03-24 13:29:25,502 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 535 selfloop transitions, 95 changer transitions 8/642 dead transitions. [2021-03-24 13:29:25,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 642 transitions, 16601 flow [2021-03-24 13:29:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:29:25,503 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:29:25,503 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:29:25,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:29:25,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:25,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:29:25,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:25,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:25,504 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:25,504 INFO L185 Difference]: Start difference. First operand has 371 places, 623 transitions, 14861 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:29:25,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 642 transitions, 16601 flow [2021-03-24 13:29:25,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 642 transitions, 16457 flow, removed 72 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:25,849 INFO L241 Difference]: Finished difference. Result has 388 places, 625 transitions, 15139 flow [2021-03-24 13:29:25,850 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=14717, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15139, PETRI_PLACES=388, PETRI_TRANSITIONS=625} [2021-03-24 13:29:25,850 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 357 predicate places. [2021-03-24 13:29:25,850 INFO L480 AbstractCegarLoop]: Abstraction has has 388 places, 625 transitions, 15139 flow [2021-03-24 13:29:25,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:25,850 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:25,850 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:25,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-24 13:29:25,851 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:25,851 INFO L82 PathProgramCache]: Analyzing trace with hash 460773572, now seen corresponding path program 40 times [2021-03-24 13:29:25,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:25,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899658462] [2021-03-24 13:29:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:25,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:25,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:25,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:25,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:25,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:25,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:25,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:25,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:25,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:25,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:25,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:25,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899658462] [2021-03-24 13:29:25,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:25,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:25,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920858745] [2021-03-24 13:29:25,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:25,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:25,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:25,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:25,919 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:25,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 625 transitions, 15139 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:25,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:25,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:25,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:26,318 INFO L129 PetriNetUnfolder]: 466/1016 cut-off events. [2021-03-24 13:29:26,318 INFO L130 PetriNetUnfolder]: For 43399/43399 co-relation queries the response was YES. [2021-03-24 13:29:26,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14525 conditions, 1016 events. 466/1016 cut-off events. For 43399/43399 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 6524 event pairs, 30 based on Foata normal form. 1/1016 useless extension candidates. Maximal degree in co-relation 14295. Up to 827 conditions per place. [2021-03-24 13:29:26,335 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 535 selfloop transitions, 112 changer transitions 3/654 dead transitions. [2021-03-24 13:29:26,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 654 transitions, 17180 flow [2021-03-24 13:29:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:26,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:26,336 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:26,336 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:26,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:26,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:26,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:26,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:26,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:26,337 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:26,337 INFO L185 Difference]: Start difference. First operand has 388 places, 625 transitions, 15139 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:26,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 654 transitions, 17180 flow [2021-03-24 13:29:26,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 654 transitions, 16884 flow, removed 33 selfloop flow, removed 11 redundant places. [2021-03-24 13:29:26,690 INFO L241 Difference]: Finished difference. Result has 390 places, 643 transitions, 15811 flow [2021-03-24 13:29:26,690 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=14863, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15811, PETRI_PLACES=390, PETRI_TRANSITIONS=643} [2021-03-24 13:29:26,691 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2021-03-24 13:29:26,691 INFO L480 AbstractCegarLoop]: Abstraction has has 390 places, 643 transitions, 15811 flow [2021-03-24 13:29:26,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:26,691 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:26,691 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:26,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-24 13:29:26,691 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:26,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:26,692 INFO L82 PathProgramCache]: Analyzing trace with hash 694610330, now seen corresponding path program 41 times [2021-03-24 13:29:26,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:26,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695185267] [2021-03-24 13:29:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:26,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:26,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:26,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:26,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:26,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:26,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:26,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:26,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:26,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:26,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:26,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:26,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:26,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:26,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:26,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:26,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:26,756 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:26,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:26,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695185267] [2021-03-24 13:29:26,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:26,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:26,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70048952] [2021-03-24 13:29:26,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:26,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:26,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:26,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:26,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:26,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 643 transitions, 15811 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:26,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:26,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:26,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:27,169 INFO L129 PetriNetUnfolder]: 468/1024 cut-off events. [2021-03-24 13:29:27,170 INFO L130 PetriNetUnfolder]: For 43523/43523 co-relation queries the response was YES. [2021-03-24 13:29:27,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14611 conditions, 1024 events. 468/1024 cut-off events. For 43523/43523 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 6621 event pairs, 30 based on Foata normal form. 1/1025 useless extension candidates. Maximal degree in co-relation 14381. Up to 864 conditions per place. [2021-03-24 13:29:27,192 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 582 selfloop transitions, 81 changer transitions 3/670 dead transitions. [2021-03-24 13:29:27,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 670 transitions, 17772 flow [2021-03-24 13:29:27,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:27,194 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:27,194 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:27,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:27,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:27,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:27,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:27,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:27,195 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:27,195 INFO L185 Difference]: Start difference. First operand has 390 places, 643 transitions, 15811 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:27,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 670 transitions, 17772 flow [2021-03-24 13:29:27,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 670 transitions, 17565 flow, removed 86 selfloop flow, removed 2 redundant places. [2021-03-24 13:29:27,563 INFO L241 Difference]: Finished difference. Result has 401 places, 659 transitions, 16303 flow [2021-03-24 13:29:27,563 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=15604, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16303, PETRI_PLACES=401, PETRI_TRANSITIONS=659} [2021-03-24 13:29:27,564 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2021-03-24 13:29:27,564 INFO L480 AbstractCegarLoop]: Abstraction has has 401 places, 659 transitions, 16303 flow [2021-03-24 13:29:27,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:27,564 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:27,564 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:27,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-24 13:29:27,564 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash -103068442, now seen corresponding path program 42 times [2021-03-24 13:29:27,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:27,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364131950] [2021-03-24 13:29:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:27,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:27,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:27,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:27,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:27,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:27,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:27,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:27,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:27,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:27,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:27,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:27,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:27,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:27,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:27,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:27,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:27,631 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:27,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:27,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364131950] [2021-03-24 13:29:27,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:27,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:27,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218341764] [2021-03-24 13:29:27,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:27,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:27,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:27,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:27,635 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:27,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 659 transitions, 16303 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:27,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:27,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:27,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:28,035 INFO L129 PetriNetUnfolder]: 461/963 cut-off events. [2021-03-24 13:29:28,035 INFO L130 PetriNetUnfolder]: For 44437/44437 co-relation queries the response was YES. [2021-03-24 13:29:28,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14231 conditions, 963 events. 461/963 cut-off events. For 44437/44437 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 6010 event pairs, 36 based on Foata normal form. 1/964 useless extension candidates. Maximal degree in co-relation 13993. Up to 748 conditions per place. [2021-03-24 13:29:28,054 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 558 selfloop transitions, 106 changer transitions 11/679 dead transitions. [2021-03-24 13:29:28,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 679 transitions, 18079 flow [2021-03-24 13:29:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:29:28,055 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:29:28,055 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:29:28,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:29:28,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:28,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:29:28,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:28,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:28,056 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:28,056 INFO L185 Difference]: Start difference. First operand has 401 places, 659 transitions, 16303 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:29:28,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 679 transitions, 18079 flow [2021-03-24 13:29:28,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 679 transitions, 17812 flow, removed 121 selfloop flow, removed 2 redundant places. [2021-03-24 13:29:28,426 INFO L241 Difference]: Finished difference. Result has 412 places, 658 transitions, 16368 flow [2021-03-24 13:29:28,427 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=16040, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16368, PETRI_PLACES=412, PETRI_TRANSITIONS=658} [2021-03-24 13:29:28,427 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2021-03-24 13:29:28,427 INFO L480 AbstractCegarLoop]: Abstraction has has 412 places, 658 transitions, 16368 flow [2021-03-24 13:29:28,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:28,427 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:28,427 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:28,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-24 13:29:28,427 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:28,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:28,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1234210406, now seen corresponding path program 43 times [2021-03-24 13:29:28,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:28,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823260330] [2021-03-24 13:29:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:28,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:28,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:28,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:28,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:28,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:28,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:28,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:28,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:28,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:28,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:28,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:28,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:28,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:28,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:28,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:28,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:28,503 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:28,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:28,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823260330] [2021-03-24 13:29:28,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:28,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:28,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383035432] [2021-03-24 13:29:28,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:28,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:28,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:28,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:28,507 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:28,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 658 transitions, 16368 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:28,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:28,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:28,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:28,945 INFO L129 PetriNetUnfolder]: 459/954 cut-off events. [2021-03-24 13:29:28,945 INFO L130 PetriNetUnfolder]: For 46760/46760 co-relation queries the response was YES. [2021-03-24 13:29:28,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14418 conditions, 954 events. 459/954 cut-off events. For 46760/46760 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 5913 event pairs, 37 based on Foata normal form. 1/955 useless extension candidates. Maximal degree in co-relation 14173. Up to 723 conditions per place. [2021-03-24 13:29:28,959 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 517 selfloop transitions, 141 changer transitions 11/673 dead transitions. [2021-03-24 13:29:28,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 673 transitions, 18056 flow [2021-03-24 13:29:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:29:28,961 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:29:28,961 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:29:28,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:29:28,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:28,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:29:28,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:28,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:28,962 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:28,962 INFO L185 Difference]: Start difference. First operand has 412 places, 658 transitions, 16368 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:29:28,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 673 transitions, 18056 flow [2021-03-24 13:29:29,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 673 transitions, 17701 flow, removed 15 selfloop flow, removed 12 redundant places. [2021-03-24 13:29:29,357 INFO L241 Difference]: Finished difference. Result has 414 places, 652 transitions, 16356 flow [2021-03-24 13:29:29,357 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=16031, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16356, PETRI_PLACES=414, PETRI_TRANSITIONS=652} [2021-03-24 13:29:29,357 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2021-03-24 13:29:29,358 INFO L480 AbstractCegarLoop]: Abstraction has has 414 places, 652 transitions, 16356 flow [2021-03-24 13:29:29,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:29,358 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:29,358 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:29,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-24 13:29:29,358 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:29,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:29,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1242168982, now seen corresponding path program 44 times [2021-03-24 13:29:29,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:29,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482559849] [2021-03-24 13:29:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:29,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:29,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:29,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:29,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:29,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:29,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:29,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:29,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:29,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:29,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:29,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:29,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:29,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:29,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:29,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:29,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:29,420 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:29,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:29,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:29,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482559849] [2021-03-24 13:29:29,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:29,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:29,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215945352] [2021-03-24 13:29:29,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:29,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:29,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:29,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:29,423 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:29,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 652 transitions, 16356 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:29,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:29,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:29,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:29,826 INFO L129 PetriNetUnfolder]: 457/948 cut-off events. [2021-03-24 13:29:29,826 INFO L130 PetriNetUnfolder]: For 46675/46675 co-relation queries the response was YES. [2021-03-24 13:29:29,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14480 conditions, 948 events. 457/948 cut-off events. For 46675/46675 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 5860 event pairs, 32 based on Foata normal form. 1/949 useless extension candidates. Maximal degree in co-relation 14233. Up to 795 conditions per place. [2021-03-24 13:29:29,842 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 548 selfloop transitions, 107 changer transitions 8/667 dead transitions. [2021-03-24 13:29:29,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 667 transitions, 18148 flow [2021-03-24 13:29:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:29,843 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:29,843 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:29,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:29,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:29,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:29,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:29,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:29,844 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:29,844 INFO L185 Difference]: Start difference. First operand has 414 places, 652 transitions, 16356 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:29,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 667 transitions, 18148 flow [2021-03-24 13:29:30,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 667 transitions, 17648 flow, removed 23 selfloop flow, removed 19 redundant places. [2021-03-24 13:29:30,282 INFO L241 Difference]: Finished difference. Result has 409 places, 651 transitions, 16265 flow [2021-03-24 13:29:30,282 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=15880, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16265, PETRI_PLACES=409, PETRI_TRANSITIONS=651} [2021-03-24 13:29:30,282 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2021-03-24 13:29:30,283 INFO L480 AbstractCegarLoop]: Abstraction has has 409 places, 651 transitions, 16265 flow [2021-03-24 13:29:30,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:30,283 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:30,283 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:30,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-24 13:29:30,283 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:30,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:30,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1986871480, now seen corresponding path program 45 times [2021-03-24 13:29:30,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:30,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601948936] [2021-03-24 13:29:30,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:30,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:30,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:30,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:30,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:30,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:30,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:30,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:30,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:30,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:30,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:30,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:30,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:30,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:30,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:30,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:30,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:30,370 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:30,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:30,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601948936] [2021-03-24 13:29:30,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:30,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:30,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243889558] [2021-03-24 13:29:30,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:30,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:30,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:30,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:30,373 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:30,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 651 transitions, 16265 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:30,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:30,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:30,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:30,795 INFO L129 PetriNetUnfolder]: 456/948 cut-off events. [2021-03-24 13:29:30,795 INFO L130 PetriNetUnfolder]: For 47563/47563 co-relation queries the response was YES. [2021-03-24 13:29:30,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14367 conditions, 948 events. 456/948 cut-off events. For 47563/47563 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 5848 event pairs, 36 based on Foata normal form. 1/949 useless extension candidates. Maximal degree in co-relation 14121. Up to 777 conditions per place. [2021-03-24 13:29:30,810 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 512 selfloop transitions, 142 changer transitions 8/666 dead transitions. [2021-03-24 13:29:30,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 666 transitions, 18057 flow [2021-03-24 13:29:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:29:30,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:29:30,812 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:29:30,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:29:30,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:30,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:29:30,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:30,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:30,813 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:30,813 INFO L185 Difference]: Start difference. First operand has 409 places, 651 transitions, 16265 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:29:30,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 666 transitions, 18057 flow [2021-03-24 13:29:31,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 666 transitions, 17668 flow, removed 32 selfloop flow, removed 12 redundant places. [2021-03-24 13:29:31,180 INFO L241 Difference]: Finished difference. Result has 412 places, 650 transitions, 16384 flow [2021-03-24 13:29:31,181 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=15892, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16384, PETRI_PLACES=412, PETRI_TRANSITIONS=650} [2021-03-24 13:29:31,181 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 381 predicate places. [2021-03-24 13:29:31,181 INFO L480 AbstractCegarLoop]: Abstraction has has 412 places, 650 transitions, 16384 flow [2021-03-24 13:29:31,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:31,181 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:31,181 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:31,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-24 13:29:31,182 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:31,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:31,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1714009400, now seen corresponding path program 46 times [2021-03-24 13:29:31,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:31,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153461838] [2021-03-24 13:29:31,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:31,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:31,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:31,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:31,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:31,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:31,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:31,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:31,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:31,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:31,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:31,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:31,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:31,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:31,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:31,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:31,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:31,259 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:31,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:31,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153461838] [2021-03-24 13:29:31,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:31,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:31,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212335310] [2021-03-24 13:29:31,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:31,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:31,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:31,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:31,262 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:31,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 650 transitions, 16384 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:31,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:31,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:31,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:31,693 INFO L129 PetriNetUnfolder]: 459/957 cut-off events. [2021-03-24 13:29:31,693 INFO L130 PetriNetUnfolder]: For 50375/50375 co-relation queries the response was YES. [2021-03-24 13:29:31,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14578 conditions, 957 events. 459/957 cut-off events. For 50375/50375 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 5954 event pairs, 41 based on Foata normal form. 1/958 useless extension candidates. Maximal degree in co-relation 14330. Up to 714 conditions per place. [2021-03-24 13:29:31,708 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 509 selfloop transitions, 143 changer transitions 20/676 dead transitions. [2021-03-24 13:29:31,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 676 transitions, 18388 flow [2021-03-24 13:29:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:31,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:29:31,709 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:29:31,709 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:29:31,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:29:31,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:31,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:29:31,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:31,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:31,710 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:31,710 INFO L185 Difference]: Start difference. First operand has 412 places, 650 transitions, 16384 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:29:31,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 676 transitions, 18388 flow [2021-03-24 13:29:32,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 676 transitions, 17983 flow, removed 47 selfloop flow, removed 10 redundant places. [2021-03-24 13:29:32,108 INFO L241 Difference]: Finished difference. Result has 418 places, 646 transitions, 16488 flow [2021-03-24 13:29:32,108 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=16030, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16488, PETRI_PLACES=418, PETRI_TRANSITIONS=646} [2021-03-24 13:29:32,109 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 387 predicate places. [2021-03-24 13:29:32,109 INFO L480 AbstractCegarLoop]: Abstraction has has 418 places, 646 transitions, 16488 flow [2021-03-24 13:29:32,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:32,109 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:32,109 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:32,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-24 13:29:32,109 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:32,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:32,109 INFO L82 PathProgramCache]: Analyzing trace with hash 851910562, now seen corresponding path program 47 times [2021-03-24 13:29:32,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:32,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366958642] [2021-03-24 13:29:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:32,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:32,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:32,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:32,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:32,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:32,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:32,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:32,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:32,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:32,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:32,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:32,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:32,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:32,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:32,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:32,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:32,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:32,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:32,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366958642] [2021-03-24 13:29:32,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:32,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:32,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937319387] [2021-03-24 13:29:32,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:32,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:32,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:32,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:32,182 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:32,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 646 transitions, 16488 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:32,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:32,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:32,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:32,601 INFO L129 PetriNetUnfolder]: 450/942 cut-off events. [2021-03-24 13:29:32,601 INFO L130 PetriNetUnfolder]: For 49514/49514 co-relation queries the response was YES. [2021-03-24 13:29:32,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14565 conditions, 942 events. 450/942 cut-off events. For 49514/49514 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 5853 event pairs, 38 based on Foata normal form. 1/943 useless extension candidates. Maximal degree in co-relation 14314. Up to 769 conditions per place. [2021-03-24 13:29:32,616 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 547 selfloop transitions, 100 changer transitions 10/661 dead transitions. [2021-03-24 13:29:32,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 661 transitions, 18217 flow [2021-03-24 13:29:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:29:32,618 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:29:32,618 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:29:32,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:29:32,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:32,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:29:32,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:32,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:32,619 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:32,619 INFO L185 Difference]: Start difference. First operand has 418 places, 646 transitions, 16488 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:29:32,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 661 transitions, 18217 flow [2021-03-24 13:29:33,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 661 transitions, 17811 flow, removed 62 selfloop flow, removed 9 redundant places. [2021-03-24 13:29:33,080 INFO L241 Difference]: Finished difference. Result has 424 places, 642 transitions, 16401 flow [2021-03-24 13:29:33,080 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=16143, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16401, PETRI_PLACES=424, PETRI_TRANSITIONS=642} [2021-03-24 13:29:33,080 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 393 predicate places. [2021-03-24 13:29:33,080 INFO L480 AbstractCegarLoop]: Abstraction has has 424 places, 642 transitions, 16401 flow [2021-03-24 13:29:33,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:33,081 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:33,081 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:33,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-24 13:29:33,081 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:33,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:33,081 INFO L82 PathProgramCache]: Analyzing trace with hash -2100448866, now seen corresponding path program 48 times [2021-03-24 13:29:33,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:33,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521606216] [2021-03-24 13:29:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:33,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:33,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:33,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:33,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:33,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:33,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:33,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:33,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:33,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:33,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:33,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:33,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:33,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:33,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:33,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:33,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:33,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:33,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:33,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521606216] [2021-03-24 13:29:33,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:33,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:33,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842640694] [2021-03-24 13:29:33,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:33,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:33,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:33,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:33,168 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:33,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 642 transitions, 16401 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:33,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:33,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:33,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:33,594 INFO L129 PetriNetUnfolder]: 448/941 cut-off events. [2021-03-24 13:29:33,594 INFO L130 PetriNetUnfolder]: For 49208/49208 co-relation queries the response was YES. [2021-03-24 13:29:33,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14551 conditions, 941 events. 448/941 cut-off events. For 49208/49208 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 5820 event pairs, 43 based on Foata normal form. 1/942 useless extension candidates. Maximal degree in co-relation 14295. Up to 719 conditions per place. [2021-03-24 13:29:33,617 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 474 selfloop transitions, 155 changer transitions 24/657 dead transitions. [2021-03-24 13:29:33,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 657 transitions, 18125 flow [2021-03-24 13:29:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:33,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:29:33,618 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:29:33,618 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:29:33,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:29:33,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:33,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:29:33,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:33,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:33,620 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:33,620 INFO L185 Difference]: Start difference. First operand has 424 places, 642 transitions, 16401 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:29:33,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 657 transitions, 18125 flow [2021-03-24 13:29:34,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 657 transitions, 17675 flow, removed 21 selfloop flow, removed 19 redundant places. [2021-03-24 13:29:34,014 INFO L241 Difference]: Finished difference. Result has 420 places, 624 transitions, 16036 flow [2021-03-24 13:29:34,015 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=15975, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16036, PETRI_PLACES=420, PETRI_TRANSITIONS=624} [2021-03-24 13:29:34,015 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2021-03-24 13:29:34,015 INFO L480 AbstractCegarLoop]: Abstraction has has 420 places, 624 transitions, 16036 flow [2021-03-24 13:29:34,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:34,015 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:34,015 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:34,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-24 13:29:34,016 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1770589184, now seen corresponding path program 49 times [2021-03-24 13:29:34,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:34,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088196605] [2021-03-24 13:29:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:34,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:34,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:34,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:34,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:34,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:34,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088196605] [2021-03-24 13:29:34,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:34,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:34,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530898183] [2021-03-24 13:29:34,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:34,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:34,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:34,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:34,070 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:34,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 624 transitions, 16036 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:34,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:34,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:34,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:34,440 INFO L129 PetriNetUnfolder]: 452/934 cut-off events. [2021-03-24 13:29:34,440 INFO L130 PetriNetUnfolder]: For 52781/52781 co-relation queries the response was YES. [2021-03-24 13:29:34,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14811 conditions, 934 events. 452/934 cut-off events. For 52781/52781 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 5740 event pairs, 18 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 14557. Up to 821 conditions per place. [2021-03-24 13:29:34,456 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 592 selfloop transitions, 48 changer transitions 3/647 dead transitions. [2021-03-24 13:29:34,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 647 transitions, 17998 flow [2021-03-24 13:29:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:34,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:34,457 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:34,457 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:34,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:34,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:34,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:34,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:34,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:34,458 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:34,458 INFO L185 Difference]: Start difference. First operand has 420 places, 624 transitions, 16036 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:34,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 647 transitions, 17998 flow [2021-03-24 13:29:34,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 647 transitions, 17131 flow, removed 34 selfloop flow, removed 32 redundant places. [2021-03-24 13:29:34,829 INFO L241 Difference]: Finished difference. Result has 397 places, 635 transitions, 15802 flow [2021-03-24 13:29:34,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=15189, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15802, PETRI_PLACES=397, PETRI_TRANSITIONS=635} [2021-03-24 13:29:34,830 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2021-03-24 13:29:34,830 INFO L480 AbstractCegarLoop]: Abstraction has has 397 places, 635 transitions, 15802 flow [2021-03-24 13:29:34,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:34,830 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:34,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:34,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-24 13:29:34,830 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:34,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:34,830 INFO L82 PathProgramCache]: Analyzing trace with hash 948860, now seen corresponding path program 50 times [2021-03-24 13:29:34,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:34,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756180529] [2021-03-24 13:29:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:34,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:34,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:34,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:34,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:34,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:34,903 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:34,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:34,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756180529] [2021-03-24 13:29:34,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:34,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:34,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503556507] [2021-03-24 13:29:34,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:34,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:34,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:34,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:34,907 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:34,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 635 transitions, 15802 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:34,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:34,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:34,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:35,337 INFO L129 PetriNetUnfolder]: 483/999 cut-off events. [2021-03-24 13:29:35,337 INFO L130 PetriNetUnfolder]: For 62461/62461 co-relation queries the response was YES. [2021-03-24 13:29:35,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15759 conditions, 999 events. 483/999 cut-off events. For 62461/62461 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6211 event pairs, 14 based on Foata normal form. 1/1000 useless extension candidates. Maximal degree in co-relation 15514. Up to 847 conditions per place. [2021-03-24 13:29:35,353 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 593 selfloop transitions, 68 changer transitions 4/669 dead transitions. [2021-03-24 13:29:35,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 669 transitions, 18286 flow [2021-03-24 13:29:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:29:35,354 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:29:35,354 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:29:35,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:29:35,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:35,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:29:35,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:35,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:35,356 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:35,356 INFO L185 Difference]: Start difference. First operand has 397 places, 635 transitions, 15802 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:29:35,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 669 transitions, 18286 flow [2021-03-24 13:29:35,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 669 transitions, 17677 flow, removed 295 selfloop flow, removed 2 redundant places. [2021-03-24 13:29:35,829 INFO L241 Difference]: Finished difference. Result has 408 places, 655 transitions, 16342 flow [2021-03-24 13:29:35,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=15439, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16342, PETRI_PLACES=408, PETRI_TRANSITIONS=655} [2021-03-24 13:29:35,830 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2021-03-24 13:29:35,830 INFO L480 AbstractCegarLoop]: Abstraction has has 408 places, 655 transitions, 16342 flow [2021-03-24 13:29:35,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:35,830 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:35,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:35,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-24 13:29:35,830 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:35,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:35,830 INFO L82 PathProgramCache]: Analyzing trace with hash 469301730, now seen corresponding path program 51 times [2021-03-24 13:29:35,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:35,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776373277] [2021-03-24 13:29:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:35,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:35,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:35,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:35,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:35,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:35,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:35,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:35,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:35,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:35,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:35,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:35,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:35,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:35,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:35,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:35,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:35,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:35,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:35,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776373277] [2021-03-24 13:29:35,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:35,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:35,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884218912] [2021-03-24 13:29:35,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:35,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:35,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:35,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:35,903 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:35,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 655 transitions, 16342 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:35,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:35,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:35,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:36,343 INFO L129 PetriNetUnfolder]: 484/1002 cut-off events. [2021-03-24 13:29:36,343 INFO L130 PetriNetUnfolder]: For 60761/60761 co-relation queries the response was YES. [2021-03-24 13:29:36,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15421 conditions, 1002 events. 484/1002 cut-off events. For 60761/60761 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6266 event pairs, 13 based on Foata normal form. 1/1003 useless extension candidates. Maximal degree in co-relation 15170. Up to 845 conditions per place. [2021-03-24 13:29:36,360 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 565 selfloop transitions, 104 changer transitions 5/678 dead transitions. [2021-03-24 13:29:36,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 678 transitions, 18600 flow [2021-03-24 13:29:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:29:36,360 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:29:36,361 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:29:36,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:29:36,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:36,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:29:36,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:36,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:36,361 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:36,362 INFO L185 Difference]: Start difference. First operand has 408 places, 655 transitions, 16342 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:29:36,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 678 transitions, 18600 flow [2021-03-24 13:29:36,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 678 transitions, 18172 flow, removed 193 selfloop flow, removed 3 redundant places. [2021-03-24 13:29:36,778 INFO L241 Difference]: Finished difference. Result has 417 places, 664 transitions, 16752 flow [2021-03-24 13:29:36,779 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=15920, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16752, PETRI_PLACES=417, PETRI_TRANSITIONS=664} [2021-03-24 13:29:36,779 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2021-03-24 13:29:36,779 INFO L480 AbstractCegarLoop]: Abstraction has has 417 places, 664 transitions, 16752 flow [2021-03-24 13:29:36,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:36,779 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:36,779 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:36,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-24 13:29:36,779 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:36,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1470022110, now seen corresponding path program 52 times [2021-03-24 13:29:36,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:36,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228151455] [2021-03-24 13:29:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:36,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:36,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:36,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:36,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:36,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:36,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:36,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:36,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:36,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:36,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:36,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:36,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:36,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:36,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:36,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:36,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:36,859 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:36,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:36,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228151455] [2021-03-24 13:29:36,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:36,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:36,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93680972] [2021-03-24 13:29:36,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:36,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:36,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:36,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:36,862 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:36,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 664 transitions, 16752 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:36,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:36,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:36,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:37,315 INFO L129 PetriNetUnfolder]: 493/1024 cut-off events. [2021-03-24 13:29:37,315 INFO L130 PetriNetUnfolder]: For 58864/58864 co-relation queries the response was YES. [2021-03-24 13:29:37,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15518 conditions, 1024 events. 493/1024 cut-off events. For 58864/58864 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6452 event pairs, 9 based on Foata normal form. 1/1025 useless extension candidates. Maximal degree in co-relation 15264. Up to 910 conditions per place. [2021-03-24 13:29:37,331 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 625 selfloop transitions, 57 changer transitions 4/690 dead transitions. [2021-03-24 13:29:37,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 690 transitions, 19120 flow [2021-03-24 13:29:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:37,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:29:37,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:29:37,332 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:29:37,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:29:37,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:37,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:29:37,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:37,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:37,333 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:37,333 INFO L185 Difference]: Start difference. First operand has 417 places, 664 transitions, 16752 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:29:37,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 690 transitions, 19120 flow [2021-03-24 13:29:37,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 690 transitions, 18636 flow, removed 211 selfloop flow, removed 3 redundant places. [2021-03-24 13:29:37,776 INFO L241 Difference]: Finished difference. Result has 425 places, 677 transitions, 17114 flow [2021-03-24 13:29:37,777 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=16268, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17114, PETRI_PLACES=425, PETRI_TRANSITIONS=677} [2021-03-24 13:29:37,777 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 394 predicate places. [2021-03-24 13:29:37,777 INFO L480 AbstractCegarLoop]: Abstraction has has 425 places, 677 transitions, 17114 flow [2021-03-24 13:29:37,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:37,777 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:37,777 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:37,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-24 13:29:37,777 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:37,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:37,778 INFO L82 PathProgramCache]: Analyzing trace with hash 19382886, now seen corresponding path program 53 times [2021-03-24 13:29:37,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:37,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143859734] [2021-03-24 13:29:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:37,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:37,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:37,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:37,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:37,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:37,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:37,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:37,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:37,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:37,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:37,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:37,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:37,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:37,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:37,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:37,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:37,856 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:37,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:37,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143859734] [2021-03-24 13:29:37,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:37,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:37,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080141531] [2021-03-24 13:29:37,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:37,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:37,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:37,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:37,860 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:37,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 677 transitions, 17114 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:37,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:37,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:37,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:38,315 INFO L129 PetriNetUnfolder]: 496/1034 cut-off events. [2021-03-24 13:29:38,315 INFO L130 PetriNetUnfolder]: For 60905/60905 co-relation queries the response was YES. [2021-03-24 13:29:38,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15732 conditions, 1034 events. 496/1034 cut-off events. For 60905/60905 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 6569 event pairs, 12 based on Foata normal form. 1/1035 useless extension candidates. Maximal degree in co-relation 15476. Up to 857 conditions per place. [2021-03-24 13:29:38,334 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 586 selfloop transitions, 99 changer transitions 10/699 dead transitions. [2021-03-24 13:29:38,334 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 699 transitions, 19360 flow [2021-03-24 13:29:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:29:38,335 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:29:38,335 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:29:38,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:29:38,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:38,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:29:38,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:38,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:38,336 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:38,336 INFO L185 Difference]: Start difference. First operand has 425 places, 677 transitions, 17114 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:29:38,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 699 transitions, 19360 flow [2021-03-24 13:29:38,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 699 transitions, 18779 flow, removed 286 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:38,765 INFO L241 Difference]: Finished difference. Result has 439 places, 679 transitions, 17148 flow [2021-03-24 13:29:38,765 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=16533, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17148, PETRI_PLACES=439, PETRI_TRANSITIONS=679} [2021-03-24 13:29:38,765 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 408 predicate places. [2021-03-24 13:29:38,765 INFO L480 AbstractCegarLoop]: Abstraction has has 439 places, 679 transitions, 17148 flow [2021-03-24 13:29:38,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:38,765 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:38,765 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:38,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-24 13:29:38,765 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:38,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:38,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1197160030, now seen corresponding path program 54 times [2021-03-24 13:29:38,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:38,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718673227] [2021-03-24 13:29:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:38,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:38,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:38,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:38,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:38,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:38,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:38,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:38,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:38,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:38,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:38,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:38,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:38,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:38,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:38,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:38,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:38,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:38,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:38,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718673227] [2021-03-24 13:29:38,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:38,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:38,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502606027] [2021-03-24 13:29:38,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:38,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:38,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:38,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:38,833 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:38,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 679 transitions, 17148 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:38,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:38,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:38,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:39,286 INFO L129 PetriNetUnfolder]: 495/1029 cut-off events. [2021-03-24 13:29:39,286 INFO L130 PetriNetUnfolder]: For 63570/63570 co-relation queries the response was YES. [2021-03-24 13:29:39,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15962 conditions, 1029 events. 495/1029 cut-off events. For 63570/63570 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 6534 event pairs, 11 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 15698. Up to 890 conditions per place. [2021-03-24 13:29:39,302 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 635 selfloop transitions, 69 changer transitions 7/715 dead transitions. [2021-03-24 13:29:39,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 715 transitions, 19797 flow [2021-03-24 13:29:39,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:29:39,303 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:29:39,303 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:29:39,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:29:39,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:39,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:29:39,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:39,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:39,304 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:39,304 INFO L185 Difference]: Start difference. First operand has 439 places, 679 transitions, 17148 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:29:39,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 715 transitions, 19797 flow [2021-03-24 13:29:39,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 715 transitions, 19449 flow, removed 133 selfloop flow, removed 5 redundant places. [2021-03-24 13:29:39,778 INFO L241 Difference]: Finished difference. Result has 447 places, 698 transitions, 17827 flow [2021-03-24 13:29:39,778 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=16806, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17827, PETRI_PLACES=447, PETRI_TRANSITIONS=698} [2021-03-24 13:29:39,778 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 416 predicate places. [2021-03-24 13:29:39,779 INFO L480 AbstractCegarLoop]: Abstraction has has 447 places, 698 transitions, 17827 flow [2021-03-24 13:29:39,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:39,779 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:39,779 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:39,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-24 13:29:39,779 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1973530210, now seen corresponding path program 55 times [2021-03-24 13:29:39,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:39,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365960014] [2021-03-24 13:29:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:39,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:39,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:39,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:39,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:39,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:39,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:39,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:39,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:39,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:39,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:39,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:39,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:39,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:39,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:39,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:39,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:39,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:39,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:39,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365960014] [2021-03-24 13:29:39,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:39,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:39,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756674773] [2021-03-24 13:29:39,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:39,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:39,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:39,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:39,849 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:39,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 698 transitions, 17827 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:39,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:39,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:39,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:40,285 INFO L129 PetriNetUnfolder]: 514/1069 cut-off events. [2021-03-24 13:29:40,285 INFO L130 PetriNetUnfolder]: For 72427/72427 co-relation queries the response was YES. [2021-03-24 13:29:40,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16930 conditions, 1069 events. 514/1069 cut-off events. For 72427/72427 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 6836 event pairs, 12 based on Foata normal form. 1/1070 useless extension candidates. Maximal degree in co-relation 16663. Up to 856 conditions per place. [2021-03-24 13:29:40,303 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 607 selfloop transitions, 108 changer transitions 5/724 dead transitions. [2021-03-24 13:29:40,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 724 transitions, 20153 flow [2021-03-24 13:29:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:40,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:29:40,304 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:29:40,304 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:29:40,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:29:40,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:40,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:29:40,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:40,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:40,305 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:40,305 INFO L185 Difference]: Start difference. First operand has 447 places, 698 transitions, 17827 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:29:40,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 724 transitions, 20153 flow [2021-03-24 13:29:40,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 724 transitions, 19645 flow, removed 232 selfloop flow, removed 3 redundant places. [2021-03-24 13:29:40,851 INFO L241 Difference]: Finished difference. Result has 454 places, 709 transitions, 18182 flow [2021-03-24 13:29:40,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=17319, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18182, PETRI_PLACES=454, PETRI_TRANSITIONS=709} [2021-03-24 13:29:40,852 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 423 predicate places. [2021-03-24 13:29:40,852 INFO L480 AbstractCegarLoop]: Abstraction has has 454 places, 709 transitions, 18182 flow [2021-03-24 13:29:40,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:40,852 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:40,852 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:40,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-24 13:29:40,852 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:40,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1841258170, now seen corresponding path program 56 times [2021-03-24 13:29:40,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:40,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578985020] [2021-03-24 13:29:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:40,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:40,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:40,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:40,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:40,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:40,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:40,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:40,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:40,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:40,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:40,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:40,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:40,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:40,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:40,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:40,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:40,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:40,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:40,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578985020] [2021-03-24 13:29:40,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:40,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:40,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124136824] [2021-03-24 13:29:40,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:40,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:40,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:40,954 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:40,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 709 transitions, 18182 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:40,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:40,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:40,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:41,493 INFO L129 PetriNetUnfolder]: 512/1077 cut-off events. [2021-03-24 13:29:41,493 INFO L130 PetriNetUnfolder]: For 73073/73073 co-relation queries the response was YES. [2021-03-24 13:29:41,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17132 conditions, 1077 events. 512/1077 cut-off events. For 73073/73073 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 6917 event pairs, 12 based on Foata normal form. 1/1078 useless extension candidates. Maximal degree in co-relation 16863. Up to 833 conditions per place. [2021-03-24 13:29:41,513 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 568 selfloop transitions, 147 changer transitions 12/731 dead transitions. [2021-03-24 13:29:41,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 731 transitions, 20552 flow [2021-03-24 13:29:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:41,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:29:41,514 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:29:41,514 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:29:41,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:29:41,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:41,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:29:41,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:41,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:41,515 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:41,515 INFO L185 Difference]: Start difference. First operand has 454 places, 709 transitions, 18182 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:29:41,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 731 transitions, 20552 flow [2021-03-24 13:29:42,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 731 transitions, 20118 flow, removed 191 selfloop flow, removed 3 redundant places. [2021-03-24 13:29:42,068 INFO L241 Difference]: Finished difference. Result has 467 places, 709 transitions, 18396 flow [2021-03-24 13:29:42,068 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=17752, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18396, PETRI_PLACES=467, PETRI_TRANSITIONS=709} [2021-03-24 13:29:42,069 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 436 predicate places. [2021-03-24 13:29:42,069 INFO L480 AbstractCegarLoop]: Abstraction has has 467 places, 709 transitions, 18396 flow [2021-03-24 13:29:42,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:42,069 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:42,069 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:42,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-24 13:29:42,069 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:42,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:42,069 INFO L82 PathProgramCache]: Analyzing trace with hash 484762526, now seen corresponding path program 57 times [2021-03-24 13:29:42,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:42,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643266183] [2021-03-24 13:29:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:42,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:42,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:42,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:42,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:42,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:42,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:42,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:42,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:42,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:42,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:42,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:42,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:42,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:42,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:42,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:42,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:42,133 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:42,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:42,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643266183] [2021-03-24 13:29:42,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:42,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:42,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928916062] [2021-03-24 13:29:42,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:42,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:42,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:42,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:42,136 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:42,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 709 transitions, 18396 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:42,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:42,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:42,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:42,621 INFO L129 PetriNetUnfolder]: 511/1071 cut-off events. [2021-03-24 13:29:42,621 INFO L130 PetriNetUnfolder]: For 70153/70153 co-relation queries the response was YES. [2021-03-24 13:29:42,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17193 conditions, 1071 events. 511/1071 cut-off events. For 70153/70153 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6872 event pairs, 13 based on Foata normal form. 1/1072 useless extension candidates. Maximal degree in co-relation 16917. Up to 874 conditions per place. [2021-03-24 13:29:42,639 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 619 selfloop transitions, 109 changer transitions 16/748 dead transitions. [2021-03-24 13:29:42,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 748 transitions, 21291 flow [2021-03-24 13:29:42,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:29:42,641 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:29:42,641 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:29:42,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:29:42,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:42,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:29:42,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:42,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:42,642 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:42,642 INFO L185 Difference]: Start difference. First operand has 467 places, 709 transitions, 18396 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:29:42,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 748 transitions, 21291 flow [2021-03-24 13:29:43,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 748 transitions, 20874 flow, removed 78 selfloop flow, removed 10 redundant places. [2021-03-24 13:29:43,147 INFO L241 Difference]: Finished difference. Result has 470 places, 722 transitions, 18956 flow [2021-03-24 13:29:43,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=18007, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18956, PETRI_PLACES=470, PETRI_TRANSITIONS=722} [2021-03-24 13:29:43,148 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 439 predicate places. [2021-03-24 13:29:43,148 INFO L480 AbstractCegarLoop]: Abstraction has has 470 places, 722 transitions, 18956 flow [2021-03-24 13:29:43,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:43,148 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:43,148 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:43,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-24 13:29:43,148 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:43,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:43,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1608460232, now seen corresponding path program 58 times [2021-03-24 13:29:43,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:43,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551765385] [2021-03-24 13:29:43,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:43,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:43,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:43,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:43,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:43,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:43,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:43,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:43,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:43,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:43,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:43,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:43,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:43,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:43,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:43,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:43,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:43,212 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:43,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:43,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551765385] [2021-03-24 13:29:43,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:43,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:43,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531748481] [2021-03-24 13:29:43,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:43,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:43,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:43,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:43,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:43,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 722 transitions, 18956 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:43,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:43,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:43,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:43,682 INFO L129 PetriNetUnfolder]: 508/1070 cut-off events. [2021-03-24 13:29:43,682 INFO L130 PetriNetUnfolder]: For 69979/69979 co-relation queries the response was YES. [2021-03-24 13:29:43,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17323 conditions, 1070 events. 508/1070 cut-off events. For 69979/69979 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 6884 event pairs, 11 based on Foata normal form. 1/1071 useless extension candidates. Maximal degree in co-relation 17045. Up to 892 conditions per place. [2021-03-24 13:29:43,702 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 621 selfloop transitions, 106 changer transitions 11/742 dead transitions. [2021-03-24 13:29:43,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 742 transitions, 21316 flow [2021-03-24 13:29:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:43,703 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:43,703 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:43,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:43,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:43,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:43,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:43,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:43,704 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:43,704 INFO L185 Difference]: Start difference. First operand has 470 places, 722 transitions, 18956 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:43,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 742 transitions, 21316 flow [2021-03-24 13:29:44,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 742 transitions, 21039 flow, removed 128 selfloop flow, removed 1 redundant places. [2021-03-24 13:29:44,289 INFO L241 Difference]: Finished difference. Result has 483 places, 722 transitions, 19236 flow [2021-03-24 13:29:44,290 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=18679, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19236, PETRI_PLACES=483, PETRI_TRANSITIONS=722} [2021-03-24 13:29:44,290 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 452 predicate places. [2021-03-24 13:29:44,290 INFO L480 AbstractCegarLoop]: Abstraction has has 483 places, 722 transitions, 19236 flow [2021-03-24 13:29:44,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:44,290 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:44,290 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:44,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-24 13:29:44,290 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:44,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:44,290 INFO L82 PathProgramCache]: Analyzing trace with hash -2115052258, now seen corresponding path program 59 times [2021-03-24 13:29:44,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:44,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321881186] [2021-03-24 13:29:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:44,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:44,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:44,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:44,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:44,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:44,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:44,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:44,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:44,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:44,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:44,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:44,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:44,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:44,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:44,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:44,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:44,362 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:44,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:44,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321881186] [2021-03-24 13:29:44,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:44,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:44,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273526969] [2021-03-24 13:29:44,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:44,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:44,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:44,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:44,365 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:44,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 722 transitions, 19236 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:44,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:44,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:44,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:44,857 INFO L129 PetriNetUnfolder]: 504/1060 cut-off events. [2021-03-24 13:29:44,858 INFO L130 PetriNetUnfolder]: For 75928/75928 co-relation queries the response was YES. [2021-03-24 13:29:44,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17573 conditions, 1060 events. 504/1060 cut-off events. For 75928/75928 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 6809 event pairs, 11 based on Foata normal form. 1/1061 useless extension candidates. Maximal degree in co-relation 17287. Up to 859 conditions per place. [2021-03-24 13:29:44,879 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 562 selfloop transitions, 169 changer transitions 7/742 dead transitions. [2021-03-24 13:29:44,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 742 transitions, 21630 flow [2021-03-24 13:29:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:44,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:29:44,880 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:29:44,880 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:29:44,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:29:44,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:44,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:29:44,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:44,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:44,882 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:44,882 INFO L185 Difference]: Start difference. First operand has 483 places, 722 transitions, 19236 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:29:44,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 742 transitions, 21630 flow [2021-03-24 13:29:45,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 742 transitions, 21217 flow, removed 132 selfloop flow, removed 8 redundant places. [2021-03-24 13:29:45,529 INFO L241 Difference]: Finished difference. Result has 490 places, 726 transitions, 19774 flow [2021-03-24 13:29:45,529 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=18831, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19774, PETRI_PLACES=490, PETRI_TRANSITIONS=726} [2021-03-24 13:29:45,530 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 459 predicate places. [2021-03-24 13:29:45,530 INFO L480 AbstractCegarLoop]: Abstraction has has 490 places, 726 transitions, 19774 flow [2021-03-24 13:29:45,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:45,530 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:45,530 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:45,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-24 13:29:45,530 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:45,531 INFO L82 PathProgramCache]: Analyzing trace with hash -986883524, now seen corresponding path program 60 times [2021-03-24 13:29:45,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:45,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093622429] [2021-03-24 13:29:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:45,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:45,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:45,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:45,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:45,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:45,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:45,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:45,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:45,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:45,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:45,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:45,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:45,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:45,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:45,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:45,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:45,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:45,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:45,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093622429] [2021-03-24 13:29:45,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:45,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:45,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769340156] [2021-03-24 13:29:45,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:45,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:45,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:45,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:45,609 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:45,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 726 transitions, 19774 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:45,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:45,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:45,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:46,159 INFO L129 PetriNetUnfolder]: 506/1070 cut-off events. [2021-03-24 13:29:46,160 INFO L130 PetriNetUnfolder]: For 79318/79318 co-relation queries the response was YES. [2021-03-24 13:29:46,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18078 conditions, 1070 events. 506/1070 cut-off events. For 79318/79318 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 6953 event pairs, 16 based on Foata normal form. 1/1071 useless extension candidates. Maximal degree in co-relation 17789. Up to 851 conditions per place. [2021-03-24 13:29:46,181 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 585 selfloop transitions, 149 changer transitions 12/750 dead transitions. [2021-03-24 13:29:46,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 750 transitions, 22328 flow [2021-03-24 13:29:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:29:46,182 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:29:46,182 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:29:46,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:29:46,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:46,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:29:46,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:46,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:46,183 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:46,183 INFO L185 Difference]: Start difference. First operand has 490 places, 726 transitions, 19774 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:29:46,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 750 transitions, 22328 flow [2021-03-24 13:29:46,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 750 transitions, 21847 flow, removed 145 selfloop flow, removed 6 redundant places. [2021-03-24 13:29:46,866 INFO L241 Difference]: Finished difference. Result has 497 places, 728 transitions, 20026 flow [2021-03-24 13:29:46,866 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=19317, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20026, PETRI_PLACES=497, PETRI_TRANSITIONS=728} [2021-03-24 13:29:46,866 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 466 predicate places. [2021-03-24 13:29:46,867 INFO L480 AbstractCegarLoop]: Abstraction has has 497 places, 728 transitions, 20026 flow [2021-03-24 13:29:46,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:46,867 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:46,867 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:46,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-24 13:29:46,867 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:46,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:46,867 INFO L82 PathProgramCache]: Analyzing trace with hash 656910814, now seen corresponding path program 61 times [2021-03-24 13:29:46,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:46,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093617810] [2021-03-24 13:29:46,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:46,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:46,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:46,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:46,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:46,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:46,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:46,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:46,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:46,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:46,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:46,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:46,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:46,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:46,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:46,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:46,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:46,946 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:46,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:46,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093617810] [2021-03-24 13:29:46,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:46,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:46,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220040487] [2021-03-24 13:29:46,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:46,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:46,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:46,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:46,950 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:46,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 728 transitions, 20026 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:46,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:46,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:46,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:47,473 INFO L129 PetriNetUnfolder]: 515/1095 cut-off events. [2021-03-24 13:29:47,473 INFO L130 PetriNetUnfolder]: For 84227/84227 co-relation queries the response was YES. [2021-03-24 13:29:47,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18743 conditions, 1095 events. 515/1095 cut-off events. For 84227/84227 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7138 event pairs, 7 based on Foata normal form. 1/1096 useless extension candidates. Maximal degree in co-relation 18452. Up to 953 conditions per place. [2021-03-24 13:29:47,494 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 678 selfloop transitions, 76 changer transitions 0/758 dead transitions. [2021-03-24 13:29:47,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 758 transitions, 22792 flow [2021-03-24 13:29:47,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:47,495 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:47,495 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:47,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:47,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:47,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:47,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:47,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:47,496 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:47,496 INFO L185 Difference]: Start difference. First operand has 497 places, 728 transitions, 20026 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:47,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 758 transitions, 22792 flow [2021-03-24 13:29:48,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 758 transitions, 22361 flow, removed 105 selfloop flow, removed 8 redundant places. [2021-03-24 13:29:48,190 INFO L241 Difference]: Finished difference. Result has 500 places, 750 transitions, 21052 flow [2021-03-24 13:29:48,191 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=19606, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21052, PETRI_PLACES=500, PETRI_TRANSITIONS=750} [2021-03-24 13:29:48,191 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 469 predicate places. [2021-03-24 13:29:48,191 INFO L480 AbstractCegarLoop]: Abstraction has has 500 places, 750 transitions, 21052 flow [2021-03-24 13:29:48,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:48,191 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:48,191 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:48,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-24 13:29:48,192 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:48,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:48,192 INFO L82 PathProgramCache]: Analyzing trace with hash -190665442, now seen corresponding path program 62 times [2021-03-24 13:29:48,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:48,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706933989] [2021-03-24 13:29:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:48,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:48,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:48,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:48,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:48,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:48,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:48,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:48,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:48,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:48,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:48,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:48,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:48,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:48,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:48,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:48,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:48,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:48,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:48,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706933989] [2021-03-24 13:29:48,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:48,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:48,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511579322] [2021-03-24 13:29:48,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:48,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:48,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:48,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:48,250 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:48,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 750 transitions, 21052 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:48,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:48,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:48,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:48,767 INFO L129 PetriNetUnfolder]: 548/1167 cut-off events. [2021-03-24 13:29:48,767 INFO L130 PetriNetUnfolder]: For 112858/112858 co-relation queries the response was YES. [2021-03-24 13:29:48,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20854 conditions, 1167 events. 548/1167 cut-off events. For 112858/112858 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 7734 event pairs, 12 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 20562. Up to 987 conditions per place. [2021-03-24 13:29:48,798 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 726 selfloop transitions, 61 changer transitions 1/792 dead transitions. [2021-03-24 13:29:48,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 792 transitions, 24625 flow [2021-03-24 13:29:48,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:48,799 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:48,799 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:48,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:48,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:48,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:48,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:48,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:48,800 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:48,801 INFO L185 Difference]: Start difference. First operand has 500 places, 750 transitions, 21052 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:48,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 792 transitions, 24625 flow [2021-03-24 13:29:49,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 792 transitions, 23417 flow, removed 604 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:49,590 INFO L241 Difference]: Finished difference. Result has 512 places, 782 transitions, 22016 flow [2021-03-24 13:29:49,590 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=20370, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22016, PETRI_PLACES=512, PETRI_TRANSITIONS=782} [2021-03-24 13:29:49,590 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 481 predicate places. [2021-03-24 13:29:49,591 INFO L480 AbstractCegarLoop]: Abstraction has has 512 places, 782 transitions, 22016 flow [2021-03-24 13:29:49,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:49,591 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:49,591 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:49,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-24 13:29:49,591 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:49,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:49,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1512217468, now seen corresponding path program 63 times [2021-03-24 13:29:49,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:49,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582635093] [2021-03-24 13:29:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:49,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:49,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:49,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:49,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:49,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:49,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:49,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:49,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:49,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:49,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:49,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:49,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582635093] [2021-03-24 13:29:49,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:49,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:49,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582322669] [2021-03-24 13:29:49,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:49,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:49,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:49,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:49,656 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:49,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 782 transitions, 22016 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:49,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:49,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:49,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:50,274 INFO L129 PetriNetUnfolder]: 559/1189 cut-off events. [2021-03-24 13:29:50,274 INFO L130 PetriNetUnfolder]: For 118006/118006 co-relation queries the response was YES. [2021-03-24 13:29:50,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21163 conditions, 1189 events. 559/1189 cut-off events. For 118006/118006 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 7923 event pairs, 9 based on Foata normal form. 1/1190 useless extension candidates. Maximal degree in co-relation 20862. Up to 1046 conditions per place. [2021-03-24 13:29:50,294 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 736 selfloop transitions, 68 changer transitions 0/808 dead transitions. [2021-03-24 13:29:50,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 808 transitions, 24832 flow [2021-03-24 13:29:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:50,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:29:50,295 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:29:50,295 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:29:50,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:29:50,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:50,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:29:50,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:50,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:50,296 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:50,296 INFO L185 Difference]: Start difference. First operand has 512 places, 782 transitions, 22016 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:29:50,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 808 transitions, 24832 flow [2021-03-24 13:29:51,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 808 transitions, 24190 flow, removed 321 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:51,350 INFO L241 Difference]: Finished difference. Result has 522 places, 800 transitions, 22729 flow [2021-03-24 13:29:51,351 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=21374, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22729, PETRI_PLACES=522, PETRI_TRANSITIONS=800} [2021-03-24 13:29:51,351 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 491 predicate places. [2021-03-24 13:29:51,351 INFO L480 AbstractCegarLoop]: Abstraction has has 522 places, 800 transitions, 22729 flow [2021-03-24 13:29:51,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:51,351 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:51,351 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:51,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-24 13:29:51,351 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:51,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1966665302, now seen corresponding path program 64 times [2021-03-24 13:29:51,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:51,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125067624] [2021-03-24 13:29:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:51,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:51,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:51,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:51,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:51,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:51,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:51,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:51,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:51,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:51,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:51,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:51,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:51,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:51,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:51,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:51,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:51,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:51,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:51,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125067624] [2021-03-24 13:29:51,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:51,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:51,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300294454] [2021-03-24 13:29:51,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:51,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:51,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:51,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:51,429 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:51,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 800 transitions, 22729 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:51,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:51,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:51,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:52,059 INFO L129 PetriNetUnfolder]: 565/1212 cut-off events. [2021-03-24 13:29:52,059 INFO L130 PetriNetUnfolder]: For 111806/111806 co-relation queries the response was YES. [2021-03-24 13:29:52,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21089 conditions, 1212 events. 565/1212 cut-off events. For 111806/111806 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8157 event pairs, 11 based on Foata normal form. 1/1213 useless extension candidates. Maximal degree in co-relation 20782. Up to 1020 conditions per place. [2021-03-24 13:29:52,085 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 713 selfloop transitions, 102 changer transitions 7/826 dead transitions. [2021-03-24 13:29:52,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 826 transitions, 25530 flow [2021-03-24 13:29:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:29:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:29:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:29:52,086 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:29:52,086 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:29:52,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:29:52,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:52,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:29:52,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:52,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:52,087 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:52,087 INFO L185 Difference]: Start difference. First operand has 522 places, 800 transitions, 22729 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:29:52,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 826 transitions, 25530 flow [2021-03-24 13:29:52,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 826 transitions, 24802 flow, removed 364 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:52,961 INFO L241 Difference]: Finished difference. Result has 536 places, 809 transitions, 22940 flow [2021-03-24 13:29:52,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=22001, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22940, PETRI_PLACES=536, PETRI_TRANSITIONS=809} [2021-03-24 13:29:52,962 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 505 predicate places. [2021-03-24 13:29:52,962 INFO L480 AbstractCegarLoop]: Abstraction has has 536 places, 809 transitions, 22940 flow [2021-03-24 13:29:52,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:52,962 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:52,962 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:52,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-24 13:29:52,962 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:52,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:52,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1064406122, now seen corresponding path program 65 times [2021-03-24 13:29:52,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:52,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612708170] [2021-03-24 13:29:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:52,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:52,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:52,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:52,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:52,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:52,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:52,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:52,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:52,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:52,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:52,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:52,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:53,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:53,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:53,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:53,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:53,031 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:53,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:53,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612708170] [2021-03-24 13:29:53,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:53,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:53,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578908854] [2021-03-24 13:29:53,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:53,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:53,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:53,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:53,035 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:53,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 809 transitions, 22940 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:53,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:53,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:53,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:53,707 INFO L129 PetriNetUnfolder]: 571/1224 cut-off events. [2021-03-24 13:29:53,707 INFO L130 PetriNetUnfolder]: For 116179/116179 co-relation queries the response was YES. [2021-03-24 13:29:53,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21402 conditions, 1224 events. 571/1224 cut-off events. For 116179/116179 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 8285 event pairs, 13 based on Foata normal form. 1/1225 useless extension candidates. Maximal degree in co-relation 21086. Up to 1011 conditions per place. [2021-03-24 13:29:53,731 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 740 selfloop transitions, 93 changer transitions 2/839 dead transitions. [2021-03-24 13:29:53,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 839 transitions, 25972 flow [2021-03-24 13:29:53,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:53,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:53,732 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:53,732 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:53,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:53,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:53,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:53,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:53,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:53,733 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:53,733 INFO L185 Difference]: Start difference. First operand has 536 places, 809 transitions, 22940 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:53,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 839 transitions, 25972 flow [2021-03-24 13:29:54,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 839 transitions, 25575 flow, removed 187 selfloop flow, removed 2 redundant places. [2021-03-24 13:29:54,642 INFO L241 Difference]: Finished difference. Result has 545 places, 828 transitions, 23978 flow [2021-03-24 13:29:54,642 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=22543, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23978, PETRI_PLACES=545, PETRI_TRANSITIONS=828} [2021-03-24 13:29:54,642 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 514 predicate places. [2021-03-24 13:29:54,643 INFO L480 AbstractCegarLoop]: Abstraction has has 545 places, 828 transitions, 23978 flow [2021-03-24 13:29:54,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:54,643 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:54,643 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:54,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-24 13:29:54,643 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:54,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:54,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1635055352, now seen corresponding path program 66 times [2021-03-24 13:29:54,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:54,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468261137] [2021-03-24 13:29:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:54,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:54,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:54,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:54,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:54,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:54,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:54,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:54,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:54,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:54,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:54,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:54,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:54,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:54,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:54,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:54,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:54,693 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:54,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:54,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468261137] [2021-03-24 13:29:54,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:54,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:29:54,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707975318] [2021-03-24 13:29:54,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:29:54,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:54,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:29:54,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:29:54,696 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:54,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 828 transitions, 23978 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:54,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:54,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:54,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:55,284 INFO L129 PetriNetUnfolder]: 566/1216 cut-off events. [2021-03-24 13:29:55,284 INFO L130 PetriNetUnfolder]: For 116343/116343 co-relation queries the response was YES. [2021-03-24 13:29:55,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21426 conditions, 1216 events. 566/1216 cut-off events. For 116343/116343 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8193 event pairs, 13 based on Foata normal form. 1/1217 useless extension candidates. Maximal degree in co-relation 21106. Up to 1037 conditions per place. [2021-03-24 13:29:55,305 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 779 selfloop transitions, 57 changer transitions 12/852 dead transitions. [2021-03-24 13:29:55,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 852 transitions, 26837 flow [2021-03-24 13:29:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:29:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:29:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:29:55,306 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:29:55,306 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:29:55,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:29:55,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:55,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:29:55,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:55,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:55,307 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:55,307 INFO L185 Difference]: Start difference. First operand has 545 places, 828 transitions, 23978 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:29:55,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 852 transitions, 26837 flow [2021-03-24 13:29:56,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 852 transitions, 26089 flow, removed 374 selfloop flow, removed 0 redundant places. [2021-03-24 13:29:56,224 INFO L241 Difference]: Finished difference. Result has 558 places, 831 transitions, 23720 flow [2021-03-24 13:29:56,225 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=23230, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=771, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23720, PETRI_PLACES=558, PETRI_TRANSITIONS=831} [2021-03-24 13:29:56,225 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 527 predicate places. [2021-03-24 13:29:56,225 INFO L480 AbstractCegarLoop]: Abstraction has has 558 places, 831 transitions, 23720 flow [2021-03-24 13:29:56,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:56,225 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:56,225 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:56,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-24 13:29:56,225 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:56,226 INFO L82 PathProgramCache]: Analyzing trace with hash -548642334, now seen corresponding path program 67 times [2021-03-24 13:29:56,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:56,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528073417] [2021-03-24 13:29:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:56,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:56,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:56,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:56,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:56,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:56,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:56,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:56,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:56,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:56,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:56,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:56,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:56,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:56,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:56,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:56,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:56,292 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:56,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:56,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528073417] [2021-03-24 13:29:56,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:56,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:56,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578163432] [2021-03-24 13:29:56,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:56,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:56,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:56,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:56,295 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:56,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 831 transitions, 23720 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:56,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:56,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:56,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:56,902 INFO L129 PetriNetUnfolder]: 562/1215 cut-off events. [2021-03-24 13:29:56,903 INFO L130 PetriNetUnfolder]: For 112366/112366 co-relation queries the response was YES. [2021-03-24 13:29:56,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21257 conditions, 1215 events. 562/1215 cut-off events. For 112366/112366 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 8190 event pairs, 14 based on Foata normal form. 1/1216 useless extension candidates. Maximal degree in co-relation 20927. Up to 1019 conditions per place. [2021-03-24 13:29:56,928 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 742 selfloop transitions, 94 changer transitions 13/853 dead transitions. [2021-03-24 13:29:56,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 853 transitions, 26429 flow [2021-03-24 13:29:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:29:56,929 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:29:56,929 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:29:56,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:29:56,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:56,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:29:56,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:56,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:56,930 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:56,930 INFO L185 Difference]: Start difference. First operand has 558 places, 831 transitions, 23720 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:29:56,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 853 transitions, 26429 flow [2021-03-24 13:29:57,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 853 transitions, 26220 flow, removed 71 selfloop flow, removed 4 redundant places. [2021-03-24 13:29:57,984 INFO L241 Difference]: Finished difference. Result has 569 places, 831 transitions, 23910 flow [2021-03-24 13:29:57,984 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=23513, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23910, PETRI_PLACES=569, PETRI_TRANSITIONS=831} [2021-03-24 13:29:57,984 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 538 predicate places. [2021-03-24 13:29:57,985 INFO L480 AbstractCegarLoop]: Abstraction has has 569 places, 831 transitions, 23910 flow [2021-03-24 13:29:57,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:57,985 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:57,985 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:57,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-24 13:29:57,985 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:57,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:57,985 INFO L82 PathProgramCache]: Analyzing trace with hash -2059910942, now seen corresponding path program 68 times [2021-03-24 13:29:57,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:57,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109707127] [2021-03-24 13:29:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:57,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:57,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:57,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:57,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:58,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:58,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:58,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:58,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:58,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:58,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:58,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:58,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:58,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:58,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:58,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:58,052 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:58,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:58,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109707127] [2021-03-24 13:29:58,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:58,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:29:58,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956268864] [2021-03-24 13:29:58,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:29:58,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:58,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:29:58,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:29:58,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:58,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 831 transitions, 23910 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:58,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:58,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:58,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:29:58,649 INFO L129 PetriNetUnfolder]: 567/1226 cut-off events. [2021-03-24 13:29:58,650 INFO L130 PetriNetUnfolder]: For 127258/127258 co-relation queries the response was YES. [2021-03-24 13:29:58,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21983 conditions, 1226 events. 567/1226 cut-off events. For 127258/127258 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 8355 event pairs, 15 based on Foata normal form. 1/1227 useless extension candidates. Maximal degree in co-relation 21646. Up to 1003 conditions per place. [2021-03-24 13:29:58,674 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 765 selfloop transitions, 80 changer transitions 8/857 dead transitions. [2021-03-24 13:29:58,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 857 transitions, 26906 flow [2021-03-24 13:29:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:29:58,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:29:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:29:58,675 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:29:58,675 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:29:58,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:29:58,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:29:58,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:29:58,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:58,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:58,676 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:58,676 INFO L185 Difference]: Start difference. First operand has 569 places, 831 transitions, 23910 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:29:58,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 857 transitions, 26906 flow [2021-03-24 13:29:59,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 857 transitions, 26498 flow, removed 89 selfloop flow, removed 11 redundant places. [2021-03-24 13:29:59,775 INFO L241 Difference]: Finished difference. Result has 568 places, 839 transitions, 24376 flow [2021-03-24 13:29:59,775 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=23520, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24376, PETRI_PLACES=568, PETRI_TRANSITIONS=839} [2021-03-24 13:29:59,775 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 537 predicate places. [2021-03-24 13:29:59,775 INFO L480 AbstractCegarLoop]: Abstraction has has 568 places, 839 transitions, 24376 flow [2021-03-24 13:29:59,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:59,779 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:29:59,780 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:29:59,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-24 13:29:59,780 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:29:59,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:29:59,780 INFO L82 PathProgramCache]: Analyzing trace with hash 524443046, now seen corresponding path program 69 times [2021-03-24 13:29:59,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:29:59,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2680053] [2021-03-24 13:29:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:29:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:29:59,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:59,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:59,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:59,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:59,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:59,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:59,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:59,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:29:59,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:59,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:59,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:59,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:59,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:59,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:29:59,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:29:59,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:29:59,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:29:59,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:29:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:29:59,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2680053] [2021-03-24 13:29:59,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:29:59,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:29:59,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850371700] [2021-03-24 13:29:59,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:29:59,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:29:59,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:29:59,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:29:59,861 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:29:59,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 839 transitions, 24376 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:29:59,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:29:59,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:29:59,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:00,572 INFO L129 PetriNetUnfolder]: 565/1224 cut-off events. [2021-03-24 13:30:00,572 INFO L130 PetriNetUnfolder]: For 128634/128634 co-relation queries the response was YES. [2021-03-24 13:30:00,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21989 conditions, 1224 events. 565/1224 cut-off events. For 128634/128634 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 8297 event pairs, 14 based on Foata normal form. 1/1225 useless extension candidates. Maximal degree in co-relation 21655. Up to 975 conditions per place. [2021-03-24 13:30:00,597 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 716 selfloop transitions, 128 changer transitions 13/861 dead transitions. [2021-03-24 13:30:00,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 861 transitions, 27438 flow [2021-03-24 13:30:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:30:00,598 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:30:00,598 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:30:00,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:30:00,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:00,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:30:00,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:00,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:00,599 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:00,600 INFO L185 Difference]: Start difference. First operand has 568 places, 839 transitions, 24376 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:30:00,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 861 transitions, 27438 flow [2021-03-24 13:30:01,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 861 transitions, 26870 flow, removed 258 selfloop flow, removed 4 redundant places. [2021-03-24 13:30:01,738 INFO L241 Difference]: Finished difference. Result has 580 places, 838 transitions, 24477 flow [2021-03-24 13:30:01,739 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=23812, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24477, PETRI_PLACES=580, PETRI_TRANSITIONS=838} [2021-03-24 13:30:01,739 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 549 predicate places. [2021-03-24 13:30:01,739 INFO L480 AbstractCegarLoop]: Abstraction has has 580 places, 838 transitions, 24477 flow [2021-03-24 13:30:01,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:01,739 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:01,739 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:01,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-24 13:30:01,739 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:01,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1095897852, now seen corresponding path program 70 times [2021-03-24 13:30:01,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:01,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675228262] [2021-03-24 13:30:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:01,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:01,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:01,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:01,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:01,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:01,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:01,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:01,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:01,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:01,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:01,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:01,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:01,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:01,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:01,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:01,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:01,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:01,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:01,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675228262] [2021-03-24 13:30:01,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:01,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:01,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974428617] [2021-03-24 13:30:01,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:01,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:01,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:01,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:01,808 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:01,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 838 transitions, 24477 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:01,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:01,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:01,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:02,488 INFO L129 PetriNetUnfolder]: 559/1220 cut-off events. [2021-03-24 13:30:02,488 INFO L130 PetriNetUnfolder]: For 115880/115880 co-relation queries the response was YES. [2021-03-24 13:30:02,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21607 conditions, 1220 events. 559/1220 cut-off events. For 115880/115880 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 8303 event pairs, 13 based on Foata normal form. 1/1221 useless extension candidates. Maximal degree in co-relation 21266. Up to 1076 conditions per place. [2021-03-24 13:30:02,514 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 800 selfloop transitions, 50 changer transitions 4/858 dead transitions. [2021-03-24 13:30:02,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 858 transitions, 27439 flow [2021-03-24 13:30:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:30:02,515 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:30:02,515 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:30:02,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:30:02,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:02,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:30:02,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:02,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:02,516 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:02,516 INFO L185 Difference]: Start difference. First operand has 580 places, 838 transitions, 24477 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:30:02,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 858 transitions, 27439 flow [2021-03-24 13:30:03,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 858 transitions, 26967 flow, removed 131 selfloop flow, removed 10 redundant places. [2021-03-24 13:30:03,740 INFO L241 Difference]: Finished difference. Result has 582 places, 845 transitions, 24920 flow [2021-03-24 13:30:03,741 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=24013, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=791, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24920, PETRI_PLACES=582, PETRI_TRANSITIONS=845} [2021-03-24 13:30:03,741 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 551 predicate places. [2021-03-24 13:30:03,741 INFO L480 AbstractCegarLoop]: Abstraction has has 582 places, 845 transitions, 24920 flow [2021-03-24 13:30:03,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:03,741 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:03,741 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:03,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-24 13:30:03,741 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:03,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:03,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1480725738, now seen corresponding path program 71 times [2021-03-24 13:30:03,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:03,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027204288] [2021-03-24 13:30:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:03,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:03,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:03,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:03,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:03,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:03,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:03,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:03,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:03,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:03,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:03,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:03,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:03,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:03,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:03,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:03,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:03,814 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:03,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:03,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027204288] [2021-03-24 13:30:03,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:03,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:03,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963212324] [2021-03-24 13:30:03,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:03,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:03,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:03,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:03,817 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:03,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 845 transitions, 24920 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:03,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:03,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:03,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:04,524 INFO L129 PetriNetUnfolder]: 565/1233 cut-off events. [2021-03-24 13:30:04,524 INFO L130 PetriNetUnfolder]: For 126762/126762 co-relation queries the response was YES. [2021-03-24 13:30:04,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22137 conditions, 1233 events. 565/1233 cut-off events. For 126762/126762 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 8416 event pairs, 21 based on Foata normal form. 1/1234 useless extension candidates. Maximal degree in co-relation 21795. Up to 1008 conditions per place. [2021-03-24 13:30:04,561 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 759 selfloop transitions, 99 changer transitions 15/877 dead transitions. [2021-03-24 13:30:04,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 877 transitions, 28669 flow [2021-03-24 13:30:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:30:04,562 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:30:04,562 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:30:04,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:30:04,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:04,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:30:04,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:04,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:04,563 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:04,563 INFO L185 Difference]: Start difference. First operand has 582 places, 845 transitions, 24920 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:30:04,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 877 transitions, 28669 flow [2021-03-24 13:30:05,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 877 transitions, 28043 flow, removed 264 selfloop flow, removed 6 redundant places. [2021-03-24 13:30:05,758 INFO L241 Difference]: Finished difference. Result has 592 places, 852 transitions, 25576 flow [2021-03-24 13:30:05,758 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=24304, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25576, PETRI_PLACES=592, PETRI_TRANSITIONS=852} [2021-03-24 13:30:05,759 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 561 predicate places. [2021-03-24 13:30:05,759 INFO L480 AbstractCegarLoop]: Abstraction has has 592 places, 852 transitions, 25576 flow [2021-03-24 13:30:05,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:05,759 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:05,759 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:05,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-24 13:30:05,759 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:05,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:05,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1192140616, now seen corresponding path program 72 times [2021-03-24 13:30:05,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:05,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795551067] [2021-03-24 13:30:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:05,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:05,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:05,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:05,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:05,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:05,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:05,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:05,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:05,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:05,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:05,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:05,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:05,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:05,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:05,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:05,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:05,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:05,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:05,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795551067] [2021-03-24 13:30:05,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:05,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:05,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094286637] [2021-03-24 13:30:05,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:05,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:05,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:05,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:05,832 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:05,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 852 transitions, 25576 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:05,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:05,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:05,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:06,546 INFO L129 PetriNetUnfolder]: 567/1236 cut-off events. [2021-03-24 13:30:06,546 INFO L130 PetriNetUnfolder]: For 131220/131220 co-relation queries the response was YES. [2021-03-24 13:30:06,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22490 conditions, 1236 events. 567/1236 cut-off events. For 131220/131220 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 8410 event pairs, 3 based on Foata normal form. 1/1237 useless extension candidates. Maximal degree in co-relation 22144. Up to 1061 conditions per place. [2021-03-24 13:30:06,573 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 777 selfloop transitions, 89 changer transitions 6/876 dead transitions. [2021-03-24 13:30:06,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 876 transitions, 29136 flow [2021-03-24 13:30:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:30:06,574 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:30:06,574 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:30:06,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:30:06,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:06,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:30:06,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:06,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:06,575 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:06,575 INFO L185 Difference]: Start difference. First operand has 592 places, 852 transitions, 25576 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:30:06,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 876 transitions, 29136 flow [2021-03-24 13:30:07,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 876 transitions, 28262 flow, removed 402 selfloop flow, removed 5 redundant places. [2021-03-24 13:30:07,799 INFO L241 Difference]: Finished difference. Result has 597 places, 862 transitions, 26039 flow [2021-03-24 13:30:07,799 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=24734, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=769, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26039, PETRI_PLACES=597, PETRI_TRANSITIONS=862} [2021-03-24 13:30:07,799 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 566 predicate places. [2021-03-24 13:30:07,799 INFO L480 AbstractCegarLoop]: Abstraction has has 597 places, 862 transitions, 26039 flow [2021-03-24 13:30:07,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:07,800 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:07,800 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:07,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-24 13:30:07,800 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:07,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2037997980, now seen corresponding path program 73 times [2021-03-24 13:30:07,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:07,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564640338] [2021-03-24 13:30:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:07,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:07,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:07,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:07,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:07,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:07,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:07,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:07,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:07,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:07,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:07,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:07,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:07,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:07,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:07,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:07,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:07,875 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:07,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:07,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564640338] [2021-03-24 13:30:07,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:07,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:30:07,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876133813] [2021-03-24 13:30:07,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:30:07,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:07,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:30:07,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:30:07,880 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:07,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 862 transitions, 26039 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:07,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:07,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:07,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:08,572 INFO L129 PetriNetUnfolder]: 576/1245 cut-off events. [2021-03-24 13:30:08,572 INFO L130 PetriNetUnfolder]: For 141177/141177 co-relation queries the response was YES. [2021-03-24 13:30:08,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23069 conditions, 1245 events. 576/1245 cut-off events. For 141177/141177 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 8487 event pairs, 9 based on Foata normal form. 1/1246 useless extension candidates. Maximal degree in co-relation 22724. Up to 1046 conditions per place. [2021-03-24 13:30:08,599 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 814 selfloop transitions, 67 changer transitions 8/893 dead transitions. [2021-03-24 13:30:08,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 893 transitions, 30325 flow [2021-03-24 13:30:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:30:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:30:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:30:08,600 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:30:08,600 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:30:08,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:30:08,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:08,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:30:08,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:08,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:08,601 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:08,601 INFO L185 Difference]: Start difference. First operand has 597 places, 862 transitions, 26039 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:30:08,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 893 transitions, 30325 flow [2021-03-24 13:30:10,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 893 transitions, 28701 flow, removed 766 selfloop flow, removed 5 redundant places. [2021-03-24 13:30:10,045 INFO L241 Difference]: Finished difference. Result has 605 places, 875 transitions, 26268 flow [2021-03-24 13:30:10,046 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=25093, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=798, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26268, PETRI_PLACES=605, PETRI_TRANSITIONS=875} [2021-03-24 13:30:10,046 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 574 predicate places. [2021-03-24 13:30:10,047 INFO L480 AbstractCegarLoop]: Abstraction has has 605 places, 875 transitions, 26268 flow [2021-03-24 13:30:10,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:10,047 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:10,047 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:10,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-24 13:30:10,047 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:10,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2005207752, now seen corresponding path program 74 times [2021-03-24 13:30:10,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:10,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381595468] [2021-03-24 13:30:10,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:10,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:10,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:10,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:10,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:10,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:10,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:10,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:10,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:10,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:10,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:10,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:10,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:10,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:10,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:10,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:10,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:10,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:10,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381595468] [2021-03-24 13:30:10,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:10,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:10,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728872862] [2021-03-24 13:30:10,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:10,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:10,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:10,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:10,119 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:10,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 875 transitions, 26268 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:10,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:10,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:10,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:10,847 INFO L129 PetriNetUnfolder]: 581/1259 cut-off events. [2021-03-24 13:30:10,847 INFO L130 PetriNetUnfolder]: For 147945/147945 co-relation queries the response was YES. [2021-03-24 13:30:10,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23043 conditions, 1259 events. 581/1259 cut-off events. For 147945/147945 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 8576 event pairs, 5 based on Foata normal form. 1/1260 useless extension candidates. Maximal degree in co-relation 22693. Up to 1115 conditions per place. [2021-03-24 13:30:10,873 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 840 selfloop transitions, 51 changer transitions 4/899 dead transitions. [2021-03-24 13:30:10,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 899 transitions, 29930 flow [2021-03-24 13:30:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:30:10,874 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:30:10,874 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:30:10,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:30:10,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:10,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:30:10,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:10,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:10,876 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:10,876 INFO L185 Difference]: Start difference. First operand has 605 places, 875 transitions, 26268 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:30:10,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 899 transitions, 29930 flow [2021-03-24 13:30:12,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 899 transitions, 29117 flow, removed 350 selfloop flow, removed 7 redundant places. [2021-03-24 13:30:12,228 INFO L241 Difference]: Finished difference. Result has 608 places, 887 transitions, 26956 flow [2021-03-24 13:30:12,229 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=25455, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=875, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26956, PETRI_PLACES=608, PETRI_TRANSITIONS=887} [2021-03-24 13:30:12,229 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 577 predicate places. [2021-03-24 13:30:12,229 INFO L480 AbstractCegarLoop]: Abstraction has has 608 places, 887 transitions, 26956 flow [2021-03-24 13:30:12,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:12,229 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:12,229 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:12,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-24 13:30:12,229 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:12,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:12,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1439513352, now seen corresponding path program 75 times [2021-03-24 13:30:12,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:12,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308032869] [2021-03-24 13:30:12,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:12,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:12,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:12,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:12,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:12,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:12,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:12,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:12,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:12,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:12,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:12,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:12,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:12,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:12,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:12,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:12,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:12,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:12,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:12,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308032869] [2021-03-24 13:30:12,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:12,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:12,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916538320] [2021-03-24 13:30:12,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:12,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:12,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:12,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:12,306 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:12,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 887 transitions, 26956 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:12,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:12,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:12,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:13,156 INFO L129 PetriNetUnfolder]: 591/1283 cut-off events. [2021-03-24 13:30:13,156 INFO L130 PetriNetUnfolder]: For 160241/160241 co-relation queries the response was YES. [2021-03-24 13:30:13,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23748 conditions, 1283 events. 591/1283 cut-off events. For 160241/160241 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 8790 event pairs, 5 based on Foata normal form. 1/1284 useless extension candidates. Maximal degree in co-relation 23399. Up to 1060 conditions per place. [2021-03-24 13:30:13,182 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 817 selfloop transitions, 92 changer transitions 6/919 dead transitions. [2021-03-24 13:30:13,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 919 transitions, 31266 flow [2021-03-24 13:30:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:13,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:30:13,183 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:30:13,183 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:30:13,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:30:13,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:13,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:30:13,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:13,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:13,184 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:13,184 INFO L185 Difference]: Start difference. First operand has 608 places, 887 transitions, 26956 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:30:13,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 919 transitions, 31266 flow [2021-03-24 13:30:14,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 919 transitions, 29836 flow, removed 703 selfloop flow, removed 3 redundant places. [2021-03-24 13:30:14,516 INFO L241 Difference]: Finished difference. Result has 618 places, 903 transitions, 27496 flow [2021-03-24 13:30:14,516 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=25854, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27496, PETRI_PLACES=618, PETRI_TRANSITIONS=903} [2021-03-24 13:30:14,516 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 587 predicate places. [2021-03-24 13:30:14,517 INFO L480 AbstractCegarLoop]: Abstraction has has 618 places, 903 transitions, 27496 flow [2021-03-24 13:30:14,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:14,517 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:14,517 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:14,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-24 13:30:14,517 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1041489472, now seen corresponding path program 76 times [2021-03-24 13:30:14,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:14,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9407755] [2021-03-24 13:30:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:14,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:14,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:14,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:14,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:14,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:14,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:14,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:14,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:14,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:14,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:14,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:14,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:14,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:14,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:14,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:14,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:14,576 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:14,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:14,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9407755] [2021-03-24 13:30:14,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:14,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:30:14,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964180198] [2021-03-24 13:30:14,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:30:14,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:14,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:30:14,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:30:14,579 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:14,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 903 transitions, 27496 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:14,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:14,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:14,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:15,286 INFO L129 PetriNetUnfolder]: 595/1286 cut-off events. [2021-03-24 13:30:15,287 INFO L130 PetriNetUnfolder]: For 155145/155145 co-relation queries the response was YES. [2021-03-24 13:30:15,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23655 conditions, 1286 events. 595/1286 cut-off events. For 155145/155145 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 8783 event pairs, 6 based on Foata normal form. 1/1287 useless extension candidates. Maximal degree in co-relation 23302. Up to 1131 conditions per place. [2021-03-24 13:30:15,316 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 875 selfloop transitions, 42 changer transitions 3/924 dead transitions. [2021-03-24 13:30:15,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 924 transitions, 30844 flow [2021-03-24 13:30:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:30:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:30:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:30:15,317 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:30:15,317 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:30:15,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:30:15,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:15,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:30:15,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:15,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:15,318 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:15,318 INFO L185 Difference]: Start difference. First operand has 618 places, 903 transitions, 27496 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:30:15,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 924 transitions, 30844 flow [2021-03-24 13:30:16,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 924 transitions, 29731 flow, removed 518 selfloop flow, removed 6 redundant places. [2021-03-24 13:30:16,904 INFO L241 Difference]: Finished difference. Result has 621 places, 912 transitions, 27587 flow [2021-03-24 13:30:16,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=26389, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=903, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=866, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27587, PETRI_PLACES=621, PETRI_TRANSITIONS=912} [2021-03-24 13:30:16,904 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 590 predicate places. [2021-03-24 13:30:16,904 INFO L480 AbstractCegarLoop]: Abstraction has has 621 places, 912 transitions, 27587 flow [2021-03-24 13:30:16,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:16,904 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:16,904 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:16,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-24 13:30:16,905 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:16,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:16,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1041966878, now seen corresponding path program 77 times [2021-03-24 13:30:16,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:16,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226416672] [2021-03-24 13:30:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:16,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:16,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:16,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:16,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:16,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:16,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:16,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:16,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:16,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:16,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:16,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:16,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:16,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:16,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:16,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:16,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:16,990 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:16,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:16,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226416672] [2021-03-24 13:30:16,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:16,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:16,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463609533] [2021-03-24 13:30:16,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:16,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:16,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:16,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:16,993 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:16,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 912 transitions, 27587 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:16,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:16,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:16,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:17,727 INFO L129 PetriNetUnfolder]: 602/1302 cut-off events. [2021-03-24 13:30:17,727 INFO L130 PetriNetUnfolder]: For 157061/157061 co-relation queries the response was YES. [2021-03-24 13:30:17,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23969 conditions, 1302 events. 602/1302 cut-off events. For 157061/157061 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 8953 event pairs, 1 based on Foata normal form. 1/1303 useless extension candidates. Maximal degree in co-relation 23614. Up to 1126 conditions per place. [2021-03-24 13:30:17,769 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 837 selfloop transitions, 89 changer transitions 6/936 dead transitions. [2021-03-24 13:30:17,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 936 transitions, 31379 flow [2021-03-24 13:30:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:17,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:30:17,770 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:30:17,770 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:30:17,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:30:17,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:17,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:30:17,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:17,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:17,771 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:17,772 INFO L185 Difference]: Start difference. First operand has 621 places, 912 transitions, 27587 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:30:17,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 936 transitions, 31379 flow [2021-03-24 13:30:19,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 936 transitions, 30589 flow, removed 385 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:19,330 INFO L241 Difference]: Finished difference. Result has 629 places, 922 transitions, 28206 flow [2021-03-24 13:30:19,331 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=26797, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=829, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28206, PETRI_PLACES=629, PETRI_TRANSITIONS=922} [2021-03-24 13:30:19,331 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 598 predicate places. [2021-03-24 13:30:19,331 INFO L480 AbstractCegarLoop]: Abstraction has has 629 places, 922 transitions, 28206 flow [2021-03-24 13:30:19,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:19,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:19,331 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:19,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-24 13:30:19,331 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:19,331 INFO L82 PathProgramCache]: Analyzing trace with hash 558042274, now seen corresponding path program 78 times [2021-03-24 13:30:19,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:19,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248849129] [2021-03-24 13:30:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:19,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:19,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:19,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:19,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:19,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:19,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:19,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:19,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:19,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:19,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:19,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:19,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:19,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:19,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:19,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:19,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:19,412 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:19,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:19,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248849129] [2021-03-24 13:30:19,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:19,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:19,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358833056] [2021-03-24 13:30:19,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:19,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:19,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:19,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:19,416 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:19,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 922 transitions, 28206 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:19,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:19,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:19,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:20,323 INFO L129 PetriNetUnfolder]: 608/1312 cut-off events. [2021-03-24 13:30:20,324 INFO L130 PetriNetUnfolder]: For 163116/163116 co-relation queries the response was YES. [2021-03-24 13:30:20,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24398 conditions, 1312 events. 608/1312 cut-off events. For 163116/163116 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 9024 event pairs, 1 based on Foata normal form. 1/1313 useless extension candidates. Maximal degree in co-relation 24041. Up to 1159 conditions per place. [2021-03-24 13:30:20,356 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 881 selfloop transitions, 57 changer transitions 4/946 dead transitions. [2021-03-24 13:30:20,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 946 transitions, 32102 flow [2021-03-24 13:30:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:30:20,357 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:30:20,357 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:30:20,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:30:20,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:20,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:30:20,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:20,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:20,358 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:20,358 INFO L185 Difference]: Start difference. First operand has 629 places, 922 transitions, 28206 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:30:20,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 946 transitions, 32102 flow [2021-03-24 13:30:21,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 946 transitions, 31193 flow, removed 444 selfloop flow, removed 1 redundant places. [2021-03-24 13:30:21,946 INFO L241 Difference]: Finished difference. Result has 638 places, 934 transitions, 28903 flow [2021-03-24 13:30:21,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=27297, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=922, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=873, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28903, PETRI_PLACES=638, PETRI_TRANSITIONS=934} [2021-03-24 13:30:21,946 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 607 predicate places. [2021-03-24 13:30:21,946 INFO L480 AbstractCegarLoop]: Abstraction has has 638 places, 934 transitions, 28903 flow [2021-03-24 13:30:21,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:21,947 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:21,947 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:21,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-24 13:30:21,947 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:21,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:21,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1019370330, now seen corresponding path program 79 times [2021-03-24 13:30:21,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:21,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823891424] [2021-03-24 13:30:21,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:21,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:21,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:21,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:21,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:21,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:21,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:21,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:21,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:21,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:21,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:21,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:21,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:21,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:21,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:22,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:22,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:22,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:22,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:22,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823891424] [2021-03-24 13:30:22,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:22,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:30:22,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565459866] [2021-03-24 13:30:22,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:30:22,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:22,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:30:22,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:30:22,010 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:22,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 934 transitions, 28903 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:22,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:22,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:22,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:22,779 INFO L129 PetriNetUnfolder]: 616/1322 cut-off events. [2021-03-24 13:30:22,779 INFO L130 PetriNetUnfolder]: For 172886/172886 co-relation queries the response was YES. [2021-03-24 13:30:22,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24783 conditions, 1322 events. 616/1322 cut-off events. For 172886/172886 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 9055 event pairs, 1 based on Foata normal form. 1/1323 useless extension candidates. Maximal degree in co-relation 24423. Up to 1151 conditions per place. [2021-03-24 13:30:22,810 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 883 selfloop transitions, 70 changer transitions 3/960 dead transitions. [2021-03-24 13:30:22,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 960 transitions, 32761 flow [2021-03-24 13:30:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:30:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:30:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:30:22,811 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:30:22,811 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:30:22,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:30:22,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:22,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:30:22,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:22,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:22,812 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:22,812 INFO L185 Difference]: Start difference. First operand has 638 places, 934 transitions, 28903 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:30:22,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 960 transitions, 32761 flow [2021-03-24 13:30:24,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 960 transitions, 31633 flow, removed 554 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:24,266 INFO L241 Difference]: Finished difference. Result has 646 places, 948 transitions, 29464 flow [2021-03-24 13:30:24,266 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=27775, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=934, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=29464, PETRI_PLACES=646, PETRI_TRANSITIONS=948} [2021-03-24 13:30:24,267 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 615 predicate places. [2021-03-24 13:30:24,267 INFO L480 AbstractCegarLoop]: Abstraction has has 646 places, 948 transitions, 29464 flow [2021-03-24 13:30:24,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:24,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:24,267 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:24,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-24 13:30:24,267 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:24,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:24,267 INFO L82 PathProgramCache]: Analyzing trace with hash 179047066, now seen corresponding path program 80 times [2021-03-24 13:30:24,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:24,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347618068] [2021-03-24 13:30:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:24,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:24,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:24,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:24,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:24,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:24,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:24,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:24,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:24,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:24,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:24,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:24,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:24,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:24,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:24,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:24,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:24,329 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:24,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:24,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347618068] [2021-03-24 13:30:24,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:24,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:30:24,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995744298] [2021-03-24 13:30:24,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:30:24,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:24,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:30:24,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:30:24,332 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:24,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 948 transitions, 29464 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:24,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:24,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:24,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:25,114 INFO L129 PetriNetUnfolder]: 621/1330 cut-off events. [2021-03-24 13:30:25,114 INFO L130 PetriNetUnfolder]: For 176146/176146 co-relation queries the response was YES. [2021-03-24 13:30:25,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25063 conditions, 1330 events. 621/1330 cut-off events. For 176146/176146 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 9110 event pairs, 5 based on Foata normal form. 1/1331 useless extension candidates. Maximal degree in co-relation 24700. Up to 1158 conditions per place. [2021-03-24 13:30:25,146 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 907 selfloop transitions, 55 changer transitions 6/972 dead transitions. [2021-03-24 13:30:25,146 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 972 transitions, 33185 flow [2021-03-24 13:30:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:30:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:30:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:30:25,147 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:30:25,147 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:30:25,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:30:25,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:25,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:30:25,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:25,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:25,148 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:25,148 INFO L185 Difference]: Start difference. First operand has 646 places, 948 transitions, 29464 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:30:25,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 972 transitions, 33185 flow [2021-03-24 13:30:26,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 972 transitions, 32095 flow, removed 540 selfloop flow, removed 1 redundant places. [2021-03-24 13:30:26,751 INFO L241 Difference]: Finished difference. Result has 656 places, 956 transitions, 29627 flow [2021-03-24 13:30:26,752 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=28374, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=898, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=29627, PETRI_PLACES=656, PETRI_TRANSITIONS=956} [2021-03-24 13:30:26,752 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 625 predicate places. [2021-03-24 13:30:26,752 INFO L480 AbstractCegarLoop]: Abstraction has has 656 places, 956 transitions, 29627 flow [2021-03-24 13:30:26,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,752 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:26,752 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:26,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-24 13:30:26,752 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:26,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1542387110, now seen corresponding path program 81 times [2021-03-24 13:30:26,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:26,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053628926] [2021-03-24 13:30:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:26,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:26,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:26,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:26,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:26,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:26,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:26,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:26,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:26,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:26,827 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:26,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:26,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053628926] [2021-03-24 13:30:26,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:26,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:26,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418704865] [2021-03-24 13:30:26,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:26,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:26,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:26,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:26,830 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:26,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 956 transitions, 29627 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:26,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:26,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:26,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:27,681 INFO L129 PetriNetUnfolder]: 627/1341 cut-off events. [2021-03-24 13:30:27,681 INFO L130 PetriNetUnfolder]: For 176224/176224 co-relation queries the response was YES. [2021-03-24 13:30:27,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25391 conditions, 1341 events. 627/1341 cut-off events. For 176224/176224 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 9194 event pairs, 2 based on Foata normal form. 1/1342 useless extension candidates. Maximal degree in co-relation 25023. Up to 1194 conditions per place. [2021-03-24 13:30:27,714 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 918 selfloop transitions, 54 changer transitions 4/980 dead transitions. [2021-03-24 13:30:27,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 980 transitions, 33641 flow [2021-03-24 13:30:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:30:27,715 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:30:27,715 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:30:27,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:30:27,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:27,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:30:27,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,716 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:27,716 INFO L185 Difference]: Start difference. First operand has 656 places, 956 transitions, 29627 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:30:27,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 980 transitions, 33641 flow [2021-03-24 13:30:29,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 980 transitions, 32796 flow, removed 400 selfloop flow, removed 4 redundant places. [2021-03-24 13:30:29,460 INFO L241 Difference]: Finished difference. Result has 662 places, 968 transitions, 30427 flow [2021-03-24 13:30:29,461 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=28782, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=910, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=30427, PETRI_PLACES=662, PETRI_TRANSITIONS=968} [2021-03-24 13:30:29,461 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 631 predicate places. [2021-03-24 13:30:29,461 INFO L480 AbstractCegarLoop]: Abstraction has has 662 places, 968 transitions, 30427 flow [2021-03-24 13:30:29,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:29,462 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:29,462 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:29,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-24 13:30:29,462 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:29,462 INFO L82 PathProgramCache]: Analyzing trace with hash 684107226, now seen corresponding path program 82 times [2021-03-24 13:30:29,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:29,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527351521] [2021-03-24 13:30:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:29,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:29,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:29,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:29,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:29,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:29,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:29,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:29,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:29,537 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:29,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:29,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527351521] [2021-03-24 13:30:29,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:29,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:29,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456063457] [2021-03-24 13:30:29,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:29,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:29,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:29,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:29,541 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:29,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 968 transitions, 30427 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:29,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:29,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:29,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:30,397 INFO L129 PetriNetUnfolder]: 634/1360 cut-off events. [2021-03-24 13:30:30,398 INFO L130 PetriNetUnfolder]: For 182591/182591 co-relation queries the response was YES. [2021-03-24 13:30:30,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25941 conditions, 1360 events. 634/1360 cut-off events. For 182591/182591 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 9384 event pairs, 3 based on Foata normal form. 1/1361 useless extension candidates. Maximal degree in co-relation 25573. Up to 1197 conditions per place. [2021-03-24 13:30:30,430 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 929 selfloop transitions, 55 changer transitions 6/994 dead transitions. [2021-03-24 13:30:30,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 994 transitions, 34639 flow [2021-03-24 13:30:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:30:30,431 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:30:30,431 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:30:30,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:30:30,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:30,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:30:30,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:30,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:30,432 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:30,432 INFO L185 Difference]: Start difference. First operand has 662 places, 968 transitions, 30427 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:30:30,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 994 transitions, 34639 flow [2021-03-24 13:30:32,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 994 transitions, 33437 flow, removed 588 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:32,248 INFO L241 Difference]: Finished difference. Result has 671 places, 979 transitions, 31002 flow [2021-03-24 13:30:32,248 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=29299, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=968, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=921, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31002, PETRI_PLACES=671, PETRI_TRANSITIONS=979} [2021-03-24 13:30:32,248 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 640 predicate places. [2021-03-24 13:30:32,248 INFO L480 AbstractCegarLoop]: Abstraction has has 671 places, 979 transitions, 31002 flow [2021-03-24 13:30:32,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:32,249 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:32,249 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:32,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-24 13:30:32,249 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:32,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1557847906, now seen corresponding path program 83 times [2021-03-24 13:30:32,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:32,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206866844] [2021-03-24 13:30:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:32,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:32,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:32,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:32,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:32,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:32,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:32,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:32,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:32,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:32,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:32,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:32,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:32,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:32,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:32,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:32,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:32,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:32,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:32,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206866844] [2021-03-24 13:30:32,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:32,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:32,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610420396] [2021-03-24 13:30:32,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:32,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:32,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:32,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:32,318 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:32,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 979 transitions, 31002 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:32,319 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:32,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:32,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:33,190 INFO L129 PetriNetUnfolder]: 640/1371 cut-off events. [2021-03-24 13:30:33,190 INFO L130 PetriNetUnfolder]: For 188541/188541 co-relation queries the response was YES. [2021-03-24 13:30:33,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26281 conditions, 1371 events. 640/1371 cut-off events. For 188541/188541 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 9458 event pairs, 5 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 25910. Up to 1125 conditions per place. [2021-03-24 13:30:33,220 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 863 selfloop transitions, 122 changer transitions 16/1005 dead transitions. [2021-03-24 13:30:33,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 1005 transitions, 35188 flow [2021-03-24 13:30:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:33,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:33,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:30:33,221 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:30:33,221 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:30:33,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:30:33,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:33,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:30:33,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:33,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:33,223 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:33,223 INFO L185 Difference]: Start difference. First operand has 671 places, 979 transitions, 31002 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:30:33,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 1005 transitions, 35188 flow [2021-03-24 13:30:34,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 1005 transitions, 34009 flow, removed 574 selfloop flow, removed 3 redundant places. [2021-03-24 13:30:34,856 INFO L241 Difference]: Finished difference. Result has 682 places, 979 transitions, 31051 flow [2021-03-24 13:30:34,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=29823, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=862, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31051, PETRI_PLACES=682, PETRI_TRANSITIONS=979} [2021-03-24 13:30:34,856 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 651 predicate places. [2021-03-24 13:30:34,857 INFO L480 AbstractCegarLoop]: Abstraction has has 682 places, 979 transitions, 31051 flow [2021-03-24 13:30:34,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:34,857 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:34,857 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:34,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-24 13:30:34,857 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:34,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2018581316, now seen corresponding path program 84 times [2021-03-24 13:30:34,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:34,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210603534] [2021-03-24 13:30:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:34,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:34,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:34,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:34,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:34,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:34,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:34,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:34,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:34,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:34,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:34,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:34,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:34,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:34,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:34,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:34,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:34,940 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:34,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:34,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210603534] [2021-03-24 13:30:34,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:34,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:34,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914681800] [2021-03-24 13:30:34,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:34,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:34,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:34,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:34,943 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:34,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 979 transitions, 31051 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:34,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:34,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:34,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:35,935 INFO L129 PetriNetUnfolder]: 646/1382 cut-off events. [2021-03-24 13:30:35,935 INFO L130 PetriNetUnfolder]: For 196685/196685 co-relation queries the response was YES. [2021-03-24 13:30:35,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26637 conditions, 1382 events. 646/1382 cut-off events. For 196685/196685 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 9564 event pairs, 3 based on Foata normal form. 1/1383 useless extension candidates. Maximal degree in co-relation 26261. Up to 1188 conditions per place. [2021-03-24 13:30:35,971 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 926 selfloop transitions, 76 changer transitions 8/1014 dead transitions. [2021-03-24 13:30:35,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 1014 transitions, 35573 flow [2021-03-24 13:30:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:35,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:30:35,972 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:30:35,972 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:30:35,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:30:35,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:35,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:30:35,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:35,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:35,973 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:35,973 INFO L185 Difference]: Start difference. First operand has 682 places, 979 transitions, 31051 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:30:35,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 1014 transitions, 35573 flow [2021-03-24 13:30:37,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 1014 transitions, 34653 flow, removed 432 selfloop flow, removed 3 redundant places. [2021-03-24 13:30:37,771 INFO L241 Difference]: Finished difference. Result has 693 places, 997 transitions, 31982 flow [2021-03-24 13:30:37,772 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30131, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=909, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31982, PETRI_PLACES=693, PETRI_TRANSITIONS=997} [2021-03-24 13:30:37,772 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 662 predicate places. [2021-03-24 13:30:37,772 INFO L480 AbstractCegarLoop]: Abstraction has has 693 places, 997 transitions, 31982 flow [2021-03-24 13:30:37,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:37,772 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:37,772 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:37,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-24 13:30:37,772 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1620965080, now seen corresponding path program 85 times [2021-03-24 13:30:37,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:37,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339233787] [2021-03-24 13:30:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:37,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:37,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:37,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:37,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:37,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:37,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:37,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:37,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:37,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:37,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:37,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:37,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:37,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:37,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:37,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:37,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:37,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:37,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:37,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339233787] [2021-03-24 13:30:37,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:37,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:37,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006353416] [2021-03-24 13:30:37,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:37,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:37,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:37,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:37,864 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:37,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 997 transitions, 31982 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:37,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:37,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:37,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:38,710 INFO L129 PetriNetUnfolder]: 657/1402 cut-off events. [2021-03-24 13:30:38,710 INFO L130 PetriNetUnfolder]: For 203945/203945 co-relation queries the response was YES. [2021-03-24 13:30:38,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27231 conditions, 1402 events. 657/1402 cut-off events. For 203945/203945 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 9724 event pairs, 1 based on Foata normal form. 1/1403 useless extension candidates. Maximal degree in co-relation 26850. Up to 1224 conditions per place. [2021-03-24 13:30:38,748 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 937 selfloop transitions, 86 changer transitions 4/1031 dead transitions. [2021-03-24 13:30:38,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 1031 transitions, 36572 flow [2021-03-24 13:30:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:30:38,749 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:30:38,749 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:30:38,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:30:38,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:38,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:30:38,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:38,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:38,750 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:38,750 INFO L185 Difference]: Start difference. First operand has 693 places, 997 transitions, 31982 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:30:38,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 1031 transitions, 36572 flow [2021-03-24 13:30:40,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 1031 transitions, 35304 flow, removed 565 selfloop flow, removed 9 redundant places. [2021-03-24 13:30:40,435 INFO L241 Difference]: Finished difference. Result has 698 places, 1019 transitions, 32929 flow [2021-03-24 13:30:40,435 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30722, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=919, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32929, PETRI_PLACES=698, PETRI_TRANSITIONS=1019} [2021-03-24 13:30:40,435 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 667 predicate places. [2021-03-24 13:30:40,435 INFO L480 AbstractCegarLoop]: Abstraction has has 698 places, 1019 transitions, 32929 flow [2021-03-24 13:30:40,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:40,436 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:40,436 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:40,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-24 13:30:40,436 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:40,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1137110238, now seen corresponding path program 86 times [2021-03-24 13:30:40,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:40,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499801994] [2021-03-24 13:30:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:40,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:40,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:40,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:40,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:40,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:40,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:40,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:40,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:40,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:40,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:40,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:40,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:40,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:40,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:40,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:40,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:40,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:40,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:40,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499801994] [2021-03-24 13:30:40,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:40,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:40,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340682788] [2021-03-24 13:30:40,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:40,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:40,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:40,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:40,505 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:40,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 1019 transitions, 32929 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:40,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:40,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:40,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:41,420 INFO L129 PetriNetUnfolder]: 664/1415 cut-off events. [2021-03-24 13:30:41,420 INFO L130 PetriNetUnfolder]: For 212165/212165 co-relation queries the response was YES. [2021-03-24 13:30:41,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27686 conditions, 1415 events. 664/1415 cut-off events. For 212165/212165 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 9822 event pairs, 3 based on Foata normal form. 1/1416 useless extension candidates. Maximal degree in co-relation 27303. Up to 1217 conditions per place. [2021-03-24 13:30:41,454 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 956 selfloop transitions, 80 changer transitions 6/1046 dead transitions. [2021-03-24 13:30:41,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 1046 transitions, 37392 flow [2021-03-24 13:30:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:30:41,455 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:30:41,455 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:30:41,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:30:41,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:41,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:30:41,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:41,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:41,456 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:41,456 INFO L185 Difference]: Start difference. First operand has 698 places, 1019 transitions, 32929 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:30:41,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 1046 transitions, 37392 flow [2021-03-24 13:30:43,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 1046 transitions, 36188 flow, removed 579 selfloop flow, removed 3 redundant places. [2021-03-24 13:30:43,392 INFO L241 Difference]: Finished difference. Result has 706 places, 1030 transitions, 33617 flow [2021-03-24 13:30:43,393 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31725, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1019, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=33617, PETRI_PLACES=706, PETRI_TRANSITIONS=1030} [2021-03-24 13:30:43,393 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 675 predicate places. [2021-03-24 13:30:43,393 INFO L480 AbstractCegarLoop]: Abstraction has has 706 places, 1030 transitions, 33617 flow [2021-03-24 13:30:43,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:43,393 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:43,393 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:43,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-24 13:30:43,393 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:43,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:43,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1428809724, now seen corresponding path program 87 times [2021-03-24 13:30:43,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:43,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161944692] [2021-03-24 13:30:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:43,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:43,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:43,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:43,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:43,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:43,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:43,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:43,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:43,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:43,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:43,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:43,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:43,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:43,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:43,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:43,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:43,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:43,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:43,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161944692] [2021-03-24 13:30:43,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:43,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:43,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878924469] [2021-03-24 13:30:43,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:43,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:43,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:43,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:43,473 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:43,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 1030 transitions, 33617 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:43,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:43,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:43,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:44,511 INFO L129 PetriNetUnfolder]: 670/1430 cut-off events. [2021-03-24 13:30:44,511 INFO L130 PetriNetUnfolder]: For 215165/215165 co-relation queries the response was YES. [2021-03-24 13:30:44,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28130 conditions, 1430 events. 670/1430 cut-off events. For 215165/215165 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 9957 event pairs, 2 based on Foata normal form. 1/1431 useless extension candidates. Maximal degree in co-relation 27745. Up to 1261 conditions per place. [2021-03-24 13:30:44,549 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 997 selfloop transitions, 48 changer transitions 7/1056 dead transitions. [2021-03-24 13:30:44,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 1056 transitions, 38079 flow [2021-03-24 13:30:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:30:44,550 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:30:44,550 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:30:44,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:30:44,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:44,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:30:44,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:44,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:44,551 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:44,551 INFO L185 Difference]: Start difference. First operand has 706 places, 1030 transitions, 33617 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:30:44,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 1056 transitions, 38079 flow [2021-03-24 13:30:46,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 1056 transitions, 36810 flow, removed 602 selfloop flow, removed 5 redundant places. [2021-03-24 13:30:46,392 INFO L241 Difference]: Finished difference. Result has 712 places, 1040 transitions, 34150 flow [2021-03-24 13:30:46,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32354, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=990, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=34150, PETRI_PLACES=712, PETRI_TRANSITIONS=1040} [2021-03-24 13:30:46,392 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 681 predicate places. [2021-03-24 13:30:46,392 INFO L480 AbstractCegarLoop]: Abstraction has has 712 places, 1040 transitions, 34150 flow [2021-03-24 13:30:46,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:46,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:46,392 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:46,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-24 13:30:46,393 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:46,393 INFO L82 PathProgramCache]: Analyzing trace with hash -154136980, now seen corresponding path program 88 times [2021-03-24 13:30:46,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:46,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951162889] [2021-03-24 13:30:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:46,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:46,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:46,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:46,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:46,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:46,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:46,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:46,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:46,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:46,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:46,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:46,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:46,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:46,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:46,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:46,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:46,450 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:46,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:46,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951162889] [2021-03-24 13:30:46,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:46,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:30:46,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529449064] [2021-03-24 13:30:46,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:30:46,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:46,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:30:46,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:30:46,452 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:46,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 1040 transitions, 34150 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:46,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:46,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:46,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:47,331 INFO L129 PetriNetUnfolder]: 675/1436 cut-off events. [2021-03-24 13:30:47,331 INFO L130 PetriNetUnfolder]: For 219395/219395 co-relation queries the response was YES. [2021-03-24 13:30:47,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28325 conditions, 1436 events. 675/1436 cut-off events. For 219395/219395 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 9966 event pairs, 3 based on Foata normal form. 1/1437 useless extension candidates. Maximal degree in co-relation 27939. Up to 1225 conditions per place. [2021-03-24 13:30:47,367 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 970 selfloop transitions, 80 changer transitions 9/1063 dead transitions. [2021-03-24 13:30:47,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 1063 transitions, 38378 flow [2021-03-24 13:30:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:30:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:30:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:30:47,368 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:30:47,368 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:30:47,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:30:47,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:47,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:30:47,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:47,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:47,368 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:47,368 INFO L185 Difference]: Start difference. First operand has 712 places, 1040 transitions, 34150 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:30:47,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 1063 transitions, 38378 flow [2021-03-24 13:30:49,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 1063 transitions, 37014 flow, removed 646 selfloop flow, removed 5 redundant places. [2021-03-24 13:30:49,396 INFO L241 Difference]: Finished difference. Result has 719 places, 1045 transitions, 34070 flow [2021-03-24 13:30:49,397 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32786, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=964, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34070, PETRI_PLACES=719, PETRI_TRANSITIONS=1045} [2021-03-24 13:30:49,397 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 688 predicate places. [2021-03-24 13:30:49,397 INFO L480 AbstractCegarLoop]: Abstraction has has 719 places, 1045 transitions, 34070 flow [2021-03-24 13:30:49,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:49,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:49,397 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:49,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-24 13:30:49,397 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:49,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:49,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1026093722, now seen corresponding path program 89 times [2021-03-24 13:30:49,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:49,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718441383] [2021-03-24 13:30:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:49,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:49,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:49,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:49,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:49,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:49,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:49,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:49,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:49,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:49,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:30:49,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:49,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:49,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:49,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:49,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:49,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:49,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:49,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:49,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718441383] [2021-03-24 13:30:49,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:49,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:30:49,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076028824] [2021-03-24 13:30:49,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:30:49,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:49,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:30:49,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:30:49,492 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:49,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 1045 transitions, 34070 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:49,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:49,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:49,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:50,475 INFO L129 PetriNetUnfolder]: 674/1438 cut-off events. [2021-03-24 13:30:50,475 INFO L130 PetriNetUnfolder]: For 203426/203426 co-relation queries the response was YES. [2021-03-24 13:30:50,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28061 conditions, 1438 events. 674/1438 cut-off events. For 203426/203426 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 10019 event pairs, 8 based on Foata normal form. 1/1439 useless extension candidates. Maximal degree in co-relation 27673. Up to 1199 conditions per place. [2021-03-24 13:30:50,514 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 935 selfloop transitions, 119 changer transitions 13/1071 dead transitions. [2021-03-24 13:30:50,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 728 places, 1071 transitions, 38664 flow [2021-03-24 13:30:50,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:30:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:30:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:30:50,515 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:30:50,515 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:30:50,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:30:50,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:50,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:30:50,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:50,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:50,516 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:50,516 INFO L185 Difference]: Start difference. First operand has 719 places, 1045 transitions, 34070 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:30:50,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 728 places, 1071 transitions, 38664 flow [2021-03-24 13:30:52,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 1071 transitions, 37767 flow, removed 437 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:52,574 INFO L241 Difference]: Finished difference. Result has 731 places, 1049 transitions, 34564 flow [2021-03-24 13:30:52,575 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=33173, PETRI_DIFFERENCE_MINUEND_PLACES=717, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=931, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=34564, PETRI_PLACES=731, PETRI_TRANSITIONS=1049} [2021-03-24 13:30:52,575 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 700 predicate places. [2021-03-24 13:30:52,575 INFO L480 AbstractCegarLoop]: Abstraction has has 731 places, 1049 transitions, 34564 flow [2021-03-24 13:30:52,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:52,575 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:52,575 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:52,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-24 13:30:52,575 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:52,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:52,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2125555362, now seen corresponding path program 90 times [2021-03-24 13:30:52,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:52,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131600485] [2021-03-24 13:30:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:52,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:52,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:52,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:52,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:52,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:52,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:52,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:52,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:52,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:52,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:52,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:52,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:52,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:52,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:52,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:52,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:52,632 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:52,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:52,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131600485] [2021-03-24 13:30:52,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:52,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:30:52,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784788593] [2021-03-24 13:30:52,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:30:52,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:52,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:30:52,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:30:52,635 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:52,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 1049 transitions, 34564 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:52,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:52,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:52,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:53,531 INFO L129 PetriNetUnfolder]: 673/1435 cut-off events. [2021-03-24 13:30:53,531 INFO L130 PetriNetUnfolder]: For 209467/209467 co-relation queries the response was YES. [2021-03-24 13:30:53,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27988 conditions, 1435 events. 673/1435 cut-off events. For 209467/209467 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 10011 event pairs, 1 based on Foata normal form. 1/1436 useless extension candidates. Maximal degree in co-relation 27593. Up to 1245 conditions per place. [2021-03-24 13:30:53,569 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 961 selfloop transitions, 97 changer transitions 9/1071 dead transitions. [2021-03-24 13:30:53,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 1071 transitions, 38654 flow [2021-03-24 13:30:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:30:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:30:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:30:53,569 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:30:53,569 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:30:53,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:30:53,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:53,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:30:53,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:53,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:53,570 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:53,570 INFO L185 Difference]: Start difference. First operand has 731 places, 1049 transitions, 34564 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:30:53,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 1071 transitions, 38654 flow [2021-03-24 13:30:55,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 1071 transitions, 32516 flow, removed 3020 selfloop flow, removed 5 redundant places. [2021-03-24 13:30:55,450 INFO L241 Difference]: Finished difference. Result has 738 places, 1055 transitions, 29474 flow [2021-03-24 13:30:55,451 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=28450, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1049, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=955, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=29474, PETRI_PLACES=738, PETRI_TRANSITIONS=1055} [2021-03-24 13:30:55,451 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 707 predicate places. [2021-03-24 13:30:55,451 INFO L480 AbstractCegarLoop]: Abstraction has has 738 places, 1055 transitions, 29474 flow [2021-03-24 13:30:55,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:55,451 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:55,451 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:55,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-24 13:30:55,451 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:55,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:55,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2102958814, now seen corresponding path program 91 times [2021-03-24 13:30:55,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:55,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894117904] [2021-03-24 13:30:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:55,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:55,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:55,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:55,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:55,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:55,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:55,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:55,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:55,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:55,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:55,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:55,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:55,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:55,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:55,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:55,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:55,514 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:55,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:55,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894117904] [2021-03-24 13:30:55,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:55,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:30:55,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411731857] [2021-03-24 13:30:55,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:30:55,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:55,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:30:55,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:30:55,517 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:55,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 1055 transitions, 29474 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:55,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:55,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:55,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:56,404 INFO L129 PetriNetUnfolder]: 684/1452 cut-off events. [2021-03-24 13:30:56,404 INFO L130 PetriNetUnfolder]: For 192056/192056 co-relation queries the response was YES. [2021-03-24 13:30:56,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25694 conditions, 1452 events. 684/1452 cut-off events. For 192056/192056 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 10174 event pairs, 3 based on Foata normal form. 1/1453 useless extension candidates. Maximal degree in co-relation 25296. Up to 1254 conditions per place. [2021-03-24 13:30:56,439 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 976 selfloop transitions, 107 changer transitions 4/1091 dead transitions. [2021-03-24 13:30:56,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 1091 transitions, 34217 flow [2021-03-24 13:30:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:30:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:30:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:30:56,440 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:30:56,440 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:30:56,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:30:56,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:56,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:30:56,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:56,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:56,441 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:56,441 INFO L185 Difference]: Start difference. First operand has 738 places, 1055 transitions, 29474 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:30:56,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 1091 transitions, 34217 flow [2021-03-24 13:30:58,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 1091 transitions, 32940 flow, removed 535 selfloop flow, removed 9 redundant places. [2021-03-24 13:30:58,269 INFO L241 Difference]: Finished difference. Result has 744 places, 1079 transitions, 30573 flow [2021-03-24 13:30:58,270 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=28742, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=951, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=30573, PETRI_PLACES=744, PETRI_TRANSITIONS=1079} [2021-03-24 13:30:58,270 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 713 predicate places. [2021-03-24 13:30:58,270 INFO L480 AbstractCegarLoop]: Abstraction has has 744 places, 1079 transitions, 30573 flow [2021-03-24 13:30:58,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:58,270 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:58,271 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:58,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-24 13:30:58,271 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:30:58,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:58,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1134226594, now seen corresponding path program 92 times [2021-03-24 13:30:58,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:58,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803730594] [2021-03-24 13:30:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:58,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:58,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:58,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:58,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:58,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:58,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:58,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:58,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:58,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:58,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:58,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:58,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:30:58,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:58,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:30:58,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:58,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:30:58,339 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:30:58,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:30:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:58,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803730594] [2021-03-24 13:30:58,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:58,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:30:58,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950056484] [2021-03-24 13:30:58,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:30:58,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:58,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:30:58,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:30:58,342 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:30:58,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 1079 transitions, 30573 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:58,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:58,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:30:58,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:59,237 INFO L129 PetriNetUnfolder]: 685/1454 cut-off events. [2021-03-24 13:30:59,237 INFO L130 PetriNetUnfolder]: For 193268/193268 co-relation queries the response was YES. [2021-03-24 13:30:59,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25711 conditions, 1454 events. 685/1454 cut-off events. For 193268/193268 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 10176 event pairs, 4 based on Foata normal form. 1/1455 useless extension candidates. Maximal degree in co-relation 25311. Up to 1227 conditions per place. [2021-03-24 13:30:59,275 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1007 selfloop transitions, 81 changer transitions 6/1098 dead transitions. [2021-03-24 13:30:59,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 1098 transitions, 34231 flow [2021-03-24 13:30:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:30:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:30:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:30:59,276 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:30:59,276 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:30:59,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:30:59,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:59,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:30:59,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:59,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:59,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:59,277 INFO L185 Difference]: Start difference. First operand has 744 places, 1079 transitions, 30573 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:30:59,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 1098 transitions, 34231 flow [2021-03-24 13:31:01,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 752 places, 1098 transitions, 33587 flow, removed 322 selfloop flow, removed 0 redundant places. [2021-03-24 13:31:01,138 INFO L241 Difference]: Finished difference. Result has 757 places, 1082 transitions, 30703 flow [2021-03-24 13:31:01,139 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=29929, PETRI_DIFFERENCE_MINUEND_PLACES=744, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=999, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=30703, PETRI_PLACES=757, PETRI_TRANSITIONS=1082} [2021-03-24 13:31:01,139 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 726 predicate places. [2021-03-24 13:31:01,139 INFO L480 AbstractCegarLoop]: Abstraction has has 757 places, 1082 transitions, 30703 flow [2021-03-24 13:31:01,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:01,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:01,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:01,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-24 13:31:01,139 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:01,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:01,140 INFO L82 PathProgramCache]: Analyzing trace with hash 32316436, now seen corresponding path program 93 times [2021-03-24 13:31:01,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:01,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390444915] [2021-03-24 13:31:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:01,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:01,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:01,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:01,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:01,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:01,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:01,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:01,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:01,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:01,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:01,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:01,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:01,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:01,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:01,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:01,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:01,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:01,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:01,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:01,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390444915] [2021-03-24 13:31:01,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:01,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:31:01,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085617565] [2021-03-24 13:31:01,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:31:01,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:31:01,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:31:01,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:01,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 1082 transitions, 30703 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:01,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:01,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:01,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:02,089 INFO L129 PetriNetUnfolder]: 687/1465 cut-off events. [2021-03-24 13:31:02,089 INFO L130 PetriNetUnfolder]: For 196351/196351 co-relation queries the response was YES. [2021-03-24 13:31:02,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26043 conditions, 1465 events. 687/1465 cut-off events. For 196351/196351 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 10284 event pairs, 2 based on Foata normal form. 1/1466 useless extension candidates. Maximal degree in co-relation 25634. Up to 1236 conditions per place. [2021-03-24 13:31:02,129 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 927 selfloop transitions, 162 changer transitions 7/1100 dead transitions. [2021-03-24 13:31:02,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 1100 transitions, 34543 flow [2021-03-24 13:31:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:31:02,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:31:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:31:02,130 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:31:02,130 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:31:02,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:31:02,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:02,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:31:02,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:02,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:02,131 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:02,131 INFO L185 Difference]: Start difference. First operand has 757 places, 1082 transitions, 30703 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:31:02,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 766 places, 1100 transitions, 34543 flow [2021-03-24 13:31:04,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 1100 transitions, 34026 flow, removed 220 selfloop flow, removed 4 redundant places. [2021-03-24 13:31:04,045 INFO L241 Difference]: Finished difference. Result has 766 places, 1086 transitions, 31195 flow [2021-03-24 13:31:04,045 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30186, PETRI_DIFFERENCE_MINUEND_PLACES=753, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31195, PETRI_PLACES=766, PETRI_TRANSITIONS=1086} [2021-03-24 13:31:04,045 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 735 predicate places. [2021-03-24 13:31:04,045 INFO L480 AbstractCegarLoop]: Abstraction has has 766 places, 1086 transitions, 31195 flow [2021-03-24 13:31:04,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:04,046 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:04,046 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:04,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-24 13:31:04,046 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:04,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:04,046 INFO L82 PathProgramCache]: Analyzing trace with hash -579954590, now seen corresponding path program 94 times [2021-03-24 13:31:04,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:04,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858268068] [2021-03-24 13:31:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:04,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:04,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:04,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:04,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:04,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:04,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:04,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:04,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:04,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:04,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:04,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:04,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:04,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:04,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:04,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:04,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:04,100 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:04,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:04,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858268068] [2021-03-24 13:31:04,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:04,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:31:04,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945774758] [2021-03-24 13:31:04,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:31:04,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:04,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:31:04,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:31:04,103 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:04,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 1086 transitions, 31195 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:04,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:04,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:04,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:05,007 INFO L129 PetriNetUnfolder]: 689/1466 cut-off events. [2021-03-24 13:31:05,008 INFO L130 PetriNetUnfolder]: For 200050/200050 co-relation queries the response was YES. [2021-03-24 13:31:05,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26304 conditions, 1466 events. 689/1466 cut-off events. For 200050/200050 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 10297 event pairs, 3 based on Foata normal form. 1/1467 useless extension candidates. Maximal degree in co-relation 25889. Up to 1302 conditions per place. [2021-03-24 13:31:05,050 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1054 selfloop transitions, 47 changer transitions 3/1108 dead transitions. [2021-03-24 13:31:05,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 1108 transitions, 34928 flow [2021-03-24 13:31:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:31:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:31:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:31:05,051 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:31:05,051 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:31:05,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:31:05,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:05,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:31:05,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:05,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:05,053 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:05,053 INFO L185 Difference]: Start difference. First operand has 766 places, 1086 transitions, 31195 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:31:05,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 773 places, 1108 transitions, 34928 flow [2021-03-24 13:31:06,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 1108 transitions, 34344 flow, removed 182 selfloop flow, removed 7 redundant places. [2021-03-24 13:31:07,010 INFO L241 Difference]: Finished difference. Result has 770 places, 1096 transitions, 31772 flow [2021-03-24 13:31:07,011 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30613, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1041, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31772, PETRI_PLACES=770, PETRI_TRANSITIONS=1096} [2021-03-24 13:31:07,011 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 739 predicate places. [2021-03-24 13:31:07,011 INFO L480 AbstractCegarLoop]: Abstraction has has 770 places, 1096 transitions, 31772 flow [2021-03-24 13:31:07,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:07,011 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:07,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:07,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-24 13:31:07,012 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:07,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1779484920, now seen corresponding path program 95 times [2021-03-24 13:31:07,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:07,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546329111] [2021-03-24 13:31:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:07,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:07,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:07,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:07,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:07,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:07,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:07,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:07,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:07,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:07,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:31:07,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:07,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:07,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:07,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:07,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:07,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:07,090 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:07,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:07,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:07,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546329111] [2021-03-24 13:31:07,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:07,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:31:07,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930196434] [2021-03-24 13:31:07,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:31:07,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:07,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:31:07,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:31:07,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:07,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 1096 transitions, 31772 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:07,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:07,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:07,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:08,043 INFO L129 PetriNetUnfolder]: 691/1474 cut-off events. [2021-03-24 13:31:08,043 INFO L130 PetriNetUnfolder]: For 208584/208584 co-relation queries the response was YES. [2021-03-24 13:31:08,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26699 conditions, 1474 events. 691/1474 cut-off events. For 208584/208584 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 10413 event pairs, 5 based on Foata normal form. 1/1475 useless extension candidates. Maximal degree in co-relation 26281. Up to 1282 conditions per place. [2021-03-24 13:31:08,083 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1037 selfloop transitions, 67 changer transitions 8/1116 dead transitions. [2021-03-24 13:31:08,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 1116 transitions, 35539 flow [2021-03-24 13:31:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:31:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:31:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:31:08,084 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:31:08,084 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:31:08,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:31:08,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:08,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:31:08,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:08,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:08,085 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:08,085 INFO L185 Difference]: Start difference. First operand has 770 places, 1096 transitions, 31772 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:31:08,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 1116 transitions, 35539 flow [2021-03-24 13:31:10,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 778 places, 1116 transitions, 34983 flow, removed 273 selfloop flow, removed 1 redundant places. [2021-03-24 13:31:10,108 INFO L241 Difference]: Finished difference. Result has 783 places, 1098 transitions, 32055 flow [2021-03-24 13:31:10,108 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31216, PETRI_DIFFERENCE_MINUEND_PLACES=769, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1030, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32055, PETRI_PLACES=783, PETRI_TRANSITIONS=1098} [2021-03-24 13:31:10,109 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 752 predicate places. [2021-03-24 13:31:10,109 INFO L480 AbstractCegarLoop]: Abstraction has has 783 places, 1098 transitions, 32055 flow [2021-03-24 13:31:10,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:10,109 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:10,109 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:10,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-24 13:31:10,109 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:10,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:10,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1328070250, now seen corresponding path program 96 times [2021-03-24 13:31:10,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:10,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291447357] [2021-03-24 13:31:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:10,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:10,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:10,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:10,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:10,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:10,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:10,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:10,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:10,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:10,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:10,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:10,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:10,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:10,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:10,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:10,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:10,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:10,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:10,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291447357] [2021-03-24 13:31:10,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:10,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:31:10,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752350050] [2021-03-24 13:31:10,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:31:10,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:10,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:31:10,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:31:10,177 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:10,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 783 places, 1098 transitions, 32055 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:10,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:10,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:10,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:11,071 INFO L129 PetriNetUnfolder]: 693/1476 cut-off events. [2021-03-24 13:31:11,072 INFO L130 PetriNetUnfolder]: For 224574/224574 co-relation queries the response was YES. [2021-03-24 13:31:11,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27278 conditions, 1476 events. 693/1476 cut-off events. For 224574/224574 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 10387 event pairs, 4 based on Foata normal form. 1/1477 useless extension candidates. Maximal degree in co-relation 26853. Up to 1280 conditions per place. [2021-03-24 13:31:11,110 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 998 selfloop transitions, 110 changer transitions 8/1120 dead transitions. [2021-03-24 13:31:11,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 792 places, 1120 transitions, 36439 flow [2021-03-24 13:31:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:31:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:31:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:31:11,112 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:31:11,112 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:31:11,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:31:11,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:11,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:31:11,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:11,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:11,113 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:11,113 INFO L185 Difference]: Start difference. First operand has 783 places, 1098 transitions, 32055 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:31:11,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 792 places, 1120 transitions, 36439 flow [2021-03-24 13:31:13,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 1120 transitions, 35396 flow, removed 501 selfloop flow, removed 4 redundant places. [2021-03-24 13:31:13,417 INFO L241 Difference]: Finished difference. Result has 794 places, 1104 transitions, 32707 flow [2021-03-24 13:31:13,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31444, PETRI_DIFFERENCE_MINUEND_PLACES=779, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1098, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=990, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32707, PETRI_PLACES=794, PETRI_TRANSITIONS=1104} [2021-03-24 13:31:13,418 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 763 predicate places. [2021-03-24 13:31:13,418 INFO L480 AbstractCegarLoop]: Abstraction has has 794 places, 1104 transitions, 32707 flow [2021-03-24 13:31:13,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:13,418 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:13,418 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:13,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-24 13:31:13,418 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:13,418 INFO L82 PathProgramCache]: Analyzing trace with hash 902314654, now seen corresponding path program 97 times [2021-03-24 13:31:13,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:13,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321645958] [2021-03-24 13:31:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:13,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:13,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:13,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:13,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:13,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:13,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:13,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:13,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:13,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:13,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:13,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:13,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:13,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:13,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:13,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:13,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:13,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:13,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:13,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321645958] [2021-03-24 13:31:13,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:13,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:31:13,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004963980] [2021-03-24 13:31:13,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:31:13,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:13,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:31:13,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:31:13,489 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:13,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 1104 transitions, 32707 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:13,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:13,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:13,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:14,381 INFO L129 PetriNetUnfolder]: 692/1473 cut-off events. [2021-03-24 13:31:14,381 INFO L130 PetriNetUnfolder]: For 225956/225956 co-relation queries the response was YES. [2021-03-24 13:31:14,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27311 conditions, 1473 events. 692/1473 cut-off events. For 225956/225956 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 10327 event pairs, 7 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 26881. Up to 1269 conditions per place. [2021-03-24 13:31:14,421 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1042 selfloop transitions, 66 changer transitions 16/1128 dead transitions. [2021-03-24 13:31:14,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 1128 transitions, 36678 flow [2021-03-24 13:31:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:31:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:31:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:31:14,422 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:31:14,422 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:31:14,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:31:14,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:14,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:31:14,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:14,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:14,423 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:14,423 INFO L185 Difference]: Start difference. First operand has 794 places, 1104 transitions, 32707 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:31:14,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 801 places, 1128 transitions, 36678 flow [2021-03-24 13:31:16,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 1128 transitions, 36017 flow, removed 285 selfloop flow, removed 5 redundant places. [2021-03-24 13:31:16,766 INFO L241 Difference]: Finished difference. Result has 802 places, 1103 transitions, 32385 flow [2021-03-24 13:31:16,767 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32048, PETRI_DIFFERENCE_MINUEND_PLACES=789, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1038, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=32385, PETRI_PLACES=802, PETRI_TRANSITIONS=1103} [2021-03-24 13:31:16,767 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 771 predicate places. [2021-03-24 13:31:16,767 INFO L480 AbstractCegarLoop]: Abstraction has has 802 places, 1103 transitions, 32385 flow [2021-03-24 13:31:16,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:16,767 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:16,767 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:16,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-24 13:31:16,767 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:16,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:16,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1015145574, now seen corresponding path program 98 times [2021-03-24 13:31:16,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:16,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808142799] [2021-03-24 13:31:16,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:16,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:16,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:16,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:16,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:16,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:16,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:16,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:16,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:16,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:16,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:16,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:16,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:16,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:16,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:16,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:16,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:16,830 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:16,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:16,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808142799] [2021-03-24 13:31:16,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:16,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:31:16,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425148884] [2021-03-24 13:31:16,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:31:16,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:16,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:31:16,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:31:16,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:16,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 802 places, 1103 transitions, 32385 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:16,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:16,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:16,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:17,905 INFO L129 PetriNetUnfolder]: 698/1482 cut-off events. [2021-03-24 13:31:17,905 INFO L130 PetriNetUnfolder]: For 226433/226433 co-relation queries the response was YES. [2021-03-24 13:31:17,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27597 conditions, 1482 events. 698/1482 cut-off events. For 226433/226433 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 10444 event pairs, 6 based on Foata normal form. 1/1483 useless extension candidates. Maximal degree in co-relation 27161. Up to 1257 conditions per place. [2021-03-24 13:31:17,944 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1006 selfloop transitions, 120 changer transitions 11/1141 dead transitions. [2021-03-24 13:31:17,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 1141 transitions, 36931 flow [2021-03-24 13:31:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:31:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:31:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:31:17,945 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:31:17,945 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:31:17,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:31:17,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:17,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:31:17,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:17,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:17,946 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:17,946 INFO L185 Difference]: Start difference. First operand has 802 places, 1103 transitions, 32385 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:31:17,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 1141 transitions, 36931 flow [2021-03-24 13:31:20,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 1141 transitions, 36477 flow, removed 160 selfloop flow, removed 8 redundant places. [2021-03-24 13:31:20,446 INFO L241 Difference]: Finished difference. Result has 809 places, 1121 transitions, 33625 flow [2021-03-24 13:31:20,447 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31941, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=985, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=33625, PETRI_PLACES=809, PETRI_TRANSITIONS=1121} [2021-03-24 13:31:20,447 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 778 predicate places. [2021-03-24 13:31:20,447 INFO L480 AbstractCegarLoop]: Abstraction has has 809 places, 1121 transitions, 33625 flow [2021-03-24 13:31:20,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:20,447 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:20,447 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:20,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-24 13:31:20,447 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:20,448 INFO L82 PathProgramCache]: Analyzing trace with hash 47008000, now seen corresponding path program 99 times [2021-03-24 13:31:20,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:20,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667021752] [2021-03-24 13:31:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:20,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:20,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:20,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:20,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:20,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:20,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:20,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:20,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:20,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:20,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:20,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:20,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:20,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:20,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:20,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:20,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:20,509 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:20,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:20,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667021752] [2021-03-24 13:31:20,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:20,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:31:20,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716302412] [2021-03-24 13:31:20,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:31:20,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:20,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:31:20,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:31:20,511 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:20,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 1121 transitions, 33625 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:20,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:20,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:20,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:21,499 INFO L129 PetriNetUnfolder]: 697/1483 cut-off events. [2021-03-24 13:31:21,499 INFO L130 PetriNetUnfolder]: For 235228/235228 co-relation queries the response was YES. [2021-03-24 13:31:21,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27916 conditions, 1483 events. 697/1483 cut-off events. For 235228/235228 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 10496 event pairs, 12 based on Foata normal form. 1/1484 useless extension candidates. Maximal degree in co-relation 27478. Up to 1231 conditions per place. [2021-03-24 13:31:21,531 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1026 selfloop transitions, 102 changer transitions 10/1142 dead transitions. [2021-03-24 13:31:21,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 1142 transitions, 37442 flow [2021-03-24 13:31:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:31:21,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:31:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:31:21,532 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:31:21,533 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:31:21,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:31:21,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:21,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:31:21,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:21,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:21,533 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:21,533 INFO L185 Difference]: Start difference. First operand has 809 places, 1121 transitions, 33625 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:31:21,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 1142 transitions, 37442 flow [2021-03-24 13:31:23,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 1142 transitions, 36790 flow, removed 295 selfloop flow, removed 5 redundant places. [2021-03-24 13:31:23,914 INFO L241 Difference]: Finished difference. Result has 819 places, 1122 transitions, 33579 flow [2021-03-24 13:31:23,914 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32975, PETRI_DIFFERENCE_MINUEND_PLACES=804, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1019, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=33579, PETRI_PLACES=819, PETRI_TRANSITIONS=1122} [2021-03-24 13:31:23,914 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 788 predicate places. [2021-03-24 13:31:23,914 INFO L480 AbstractCegarLoop]: Abstraction has has 819 places, 1122 transitions, 33579 flow [2021-03-24 13:31:23,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:23,915 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:23,915 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:23,915 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-24 13:31:23,915 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:23,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:23,915 INFO L82 PathProgramCache]: Analyzing trace with hash 477460830, now seen corresponding path program 100 times [2021-03-24 13:31:23,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:23,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134714373] [2021-03-24 13:31:23,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:23,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:23,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:23,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:23,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:23,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:23,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:23,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:23,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:23,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:23,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:23,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:23,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:23,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:23,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:23,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:23,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:23,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:23,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:23,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:23,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134714373] [2021-03-24 13:31:23,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:23,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:31:23,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301375972] [2021-03-24 13:31:23,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:31:23,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:23,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:31:23,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:31:23,977 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:23,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 1122 transitions, 33579 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:23,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:23,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:23,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:24,921 INFO L129 PetriNetUnfolder]: 698/1482 cut-off events. [2021-03-24 13:31:24,921 INFO L130 PetriNetUnfolder]: For 251652/251652 co-relation queries the response was YES. [2021-03-24 13:31:24,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28343 conditions, 1482 events. 698/1482 cut-off events. For 251652/251652 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 10473 event pairs, 8 based on Foata normal form. 1/1483 useless extension candidates. Maximal degree in co-relation 27900. Up to 1282 conditions per place. [2021-03-24 13:31:24,961 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1043 selfloop transitions, 89 changer transitions 9/1145 dead transitions. [2021-03-24 13:31:24,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 1145 transitions, 38019 flow [2021-03-24 13:31:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:31:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:31:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:31:24,962 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:31:24,962 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:31:24,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:31:24,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:24,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:31:24,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:24,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:24,963 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:24,963 INFO L185 Difference]: Start difference. First operand has 819 places, 1122 transitions, 33579 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:31:24,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 827 places, 1145 transitions, 38019 flow [2021-03-24 13:31:27,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 1145 transitions, 37418 flow, removed 170 selfloop flow, removed 11 redundant places. [2021-03-24 13:31:27,594 INFO L241 Difference]: Finished difference. Result has 822 places, 1127 transitions, 34141 flow [2021-03-24 13:31:27,594 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=33000, PETRI_DIFFERENCE_MINUEND_PLACES=808, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1035, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34141, PETRI_PLACES=822, PETRI_TRANSITIONS=1127} [2021-03-24 13:31:27,595 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 791 predicate places. [2021-03-24 13:31:27,595 INFO L480 AbstractCegarLoop]: Abstraction has has 822 places, 1127 transitions, 34141 flow [2021-03-24 13:31:27,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:27,595 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:27,595 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:27,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-24 13:31:27,595 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:27,595 INFO L82 PathProgramCache]: Analyzing trace with hash 474259422, now seen corresponding path program 101 times [2021-03-24 13:31:27,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:27,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621359393] [2021-03-24 13:31:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:27,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:27,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:27,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:27,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:27,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:27,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:27,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:27,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:27,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:27,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:27,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:27,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:27,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:27,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:27,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:27,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:27,680 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:27,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:27,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621359393] [2021-03-24 13:31:27,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:27,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:31:27,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127712712] [2021-03-24 13:31:27,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:31:27,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:27,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:31:27,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:31:27,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:27,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 1127 transitions, 34141 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:27,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:27,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:27,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:28,839 INFO L129 PetriNetUnfolder]: 698/1479 cut-off events. [2021-03-24 13:31:28,839 INFO L130 PetriNetUnfolder]: For 251227/251227 co-relation queries the response was YES. [2021-03-24 13:31:28,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28342 conditions, 1479 events. 698/1479 cut-off events. For 251227/251227 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 10451 event pairs, 11 based on Foata normal form. 1/1480 useless extension candidates. Maximal degree in co-relation 27898. Up to 1224 conditions per place. [2021-03-24 13:31:28,883 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 949 selfloop transitions, 185 changer transitions 7/1145 dead transitions. [2021-03-24 13:31:28,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 831 places, 1145 transitions, 38049 flow [2021-03-24 13:31:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:31:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:31:28,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:31:28,884 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:31:28,884 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:31:28,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:31:28,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:28,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:31:28,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:28,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:28,885 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:28,885 INFO L185 Difference]: Start difference. First operand has 822 places, 1127 transitions, 34141 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:31:28,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 831 places, 1145 transitions, 38049 flow [2021-03-24 13:31:31,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 826 places, 1145 transitions, 37269 flow, removed 346 selfloop flow, removed 5 redundant places. [2021-03-24 13:31:31,709 INFO L241 Difference]: Finished difference. Result has 831 places, 1129 transitions, 34760 flow [2021-03-24 13:31:31,710 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=33369, PETRI_DIFFERENCE_MINUEND_PLACES=817, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=944, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=34760, PETRI_PLACES=831, PETRI_TRANSITIONS=1129} [2021-03-24 13:31:31,710 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 800 predicate places. [2021-03-24 13:31:31,710 INFO L480 AbstractCegarLoop]: Abstraction has has 831 places, 1129 transitions, 34760 flow [2021-03-24 13:31:31,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:31,710 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:31,710 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:31,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-24 13:31:31,710 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:31,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1085394748, now seen corresponding path program 102 times [2021-03-24 13:31:31,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:31,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909609227] [2021-03-24 13:31:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:31,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:31,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:31,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:31,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:31,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:31,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:31,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:31,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:31,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:31,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:31,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:31,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:31,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:31,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:31,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:31,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:31,774 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:31,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:31,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909609227] [2021-03-24 13:31:31,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:31,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:31:31,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534268912] [2021-03-24 13:31:31,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:31:31,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:31,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:31:31,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:31:31,778 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:31,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 831 places, 1129 transitions, 34760 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:31,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:31,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:31,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:32,754 INFO L129 PetriNetUnfolder]: 701/1484 cut-off events. [2021-03-24 13:31:32,754 INFO L130 PetriNetUnfolder]: For 268521/268521 co-relation queries the response was YES. [2021-03-24 13:31:32,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29043 conditions, 1484 events. 701/1484 cut-off events. For 268521/268521 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 10463 event pairs, 3 based on Foata normal form. 1/1485 useless extension candidates. Maximal degree in co-relation 28596. Up to 1335 conditions per place. [2021-03-24 13:31:32,796 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1076 selfloop transitions, 65 changer transitions 6/1151 dead transitions. [2021-03-24 13:31:32,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 839 places, 1151 transitions, 39458 flow [2021-03-24 13:31:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:31:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:31:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:31:32,797 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:31:32,797 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:31:32,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:31:32,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:32,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:31:32,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:32,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:32,798 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:32,798 INFO L185 Difference]: Start difference. First operand has 831 places, 1129 transitions, 34760 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:31:32,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 839 places, 1151 transitions, 39458 flow [2021-03-24 13:31:35,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 1151 transitions, 38572 flow, removed 311 selfloop flow, removed 11 redundant places. [2021-03-24 13:31:35,852 INFO L241 Difference]: Finished difference. Result has 831 places, 1138 transitions, 35520 flow [2021-03-24 13:31:35,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=33878, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35520, PETRI_PLACES=831, PETRI_TRANSITIONS=1138} [2021-03-24 13:31:35,852 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 800 predicate places. [2021-03-24 13:31:35,853 INFO L480 AbstractCegarLoop]: Abstraction has has 831 places, 1138 transitions, 35520 flow [2021-03-24 13:31:35,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:35,853 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:35,853 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:35,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-24 13:31:35,853 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1966865826, now seen corresponding path program 103 times [2021-03-24 13:31:35,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:35,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419421914] [2021-03-24 13:31:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:35,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:35,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:35,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:35,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:35,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:35,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:35,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:35,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:35,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:35,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:35,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:35,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:35,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:35,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:35,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:35,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:35,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:35,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:35,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419421914] [2021-03-24 13:31:35,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:35,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:31:35,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549738936] [2021-03-24 13:31:35,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:31:35,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:35,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:31:35,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:31:35,929 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:35,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 831 places, 1138 transitions, 35520 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:35,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:35,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:35,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:36,957 INFO L129 PetriNetUnfolder]: 708/1491 cut-off events. [2021-03-24 13:31:36,958 INFO L130 PetriNetUnfolder]: For 297052/297052 co-relation queries the response was YES. [2021-03-24 13:31:36,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29926 conditions, 1491 events. 708/1491 cut-off events. For 297052/297052 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 10533 event pairs, 7 based on Foata normal form. 1/1492 useless extension candidates. Maximal degree in co-relation 29479. Up to 1283 conditions per place. [2021-03-24 13:31:37,001 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1038 selfloop transitions, 114 changer transitions 9/1165 dead transitions. [2021-03-24 13:31:37,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 1165 transitions, 41195 flow [2021-03-24 13:31:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:31:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:31:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:31:37,006 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:31:37,006 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:31:37,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:31:37,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:37,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:31:37,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:37,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:37,007 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:37,007 INFO L185 Difference]: Start difference. First operand has 831 places, 1138 transitions, 35520 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:31:37,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 1165 transitions, 41195 flow [2021-03-24 13:31:39,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 1165 transitions, 39412 flow, removed 856 selfloop flow, removed 5 redundant places. [2021-03-24 13:31:39,882 INFO L241 Difference]: Finished difference. Result has 842 places, 1147 transitions, 36161 flow [2021-03-24 13:31:39,883 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34357, PETRI_DIFFERENCE_MINUEND_PLACES=826, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1027, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36161, PETRI_PLACES=842, PETRI_TRANSITIONS=1147} [2021-03-24 13:31:39,883 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 811 predicate places. [2021-03-24 13:31:39,883 INFO L480 AbstractCegarLoop]: Abstraction has has 842 places, 1147 transitions, 36161 flow [2021-03-24 13:31:39,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:39,883 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:39,883 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:39,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-24 13:31:39,883 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:39,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:39,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1089923738, now seen corresponding path program 104 times [2021-03-24 13:31:39,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:39,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166941123] [2021-03-24 13:31:39,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:39,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:39,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:39,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:39,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:39,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:39,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:39,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:39,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:39,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:39,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:39,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:39,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:39,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:39,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:39,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:39,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:39,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:39,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:39,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166941123] [2021-03-24 13:31:39,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:39,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:31:39,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188621982] [2021-03-24 13:31:39,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:31:39,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:39,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:31:39,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:31:39,969 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:39,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 842 places, 1147 transitions, 36161 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:39,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:39,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:39,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:41,082 INFO L129 PetriNetUnfolder]: 708/1500 cut-off events. [2021-03-24 13:31:41,082 INFO L130 PetriNetUnfolder]: For 291349/291349 co-relation queries the response was YES. [2021-03-24 13:31:41,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29781 conditions, 1500 events. 708/1500 cut-off events. For 291349/291349 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 10673 event pairs, 4 based on Foata normal form. 1/1501 useless extension candidates. Maximal degree in co-relation 29329. Up to 1285 conditions per place. [2021-03-24 13:31:41,123 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1012 selfloop transitions, 134 changer transitions 19/1169 dead transitions. [2021-03-24 13:31:41,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 851 places, 1169 transitions, 40556 flow [2021-03-24 13:31:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:31:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:31:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:31:41,124 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:31:41,124 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:31:41,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:31:41,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:41,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:31:41,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:41,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:41,125 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:41,125 INFO L185 Difference]: Start difference. First operand has 842 places, 1147 transitions, 36161 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:31:41,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 851 places, 1169 transitions, 40556 flow [2021-03-24 13:31:44,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 844 places, 1169 transitions, 39218 flow, removed 598 selfloop flow, removed 7 redundant places. [2021-03-24 13:31:44,251 INFO L241 Difference]: Finished difference. Result has 851 places, 1142 transitions, 35580 flow [2021-03-24 13:31:44,251 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34839, PETRI_DIFFERENCE_MINUEND_PLACES=835, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1014, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35580, PETRI_PLACES=851, PETRI_TRANSITIONS=1142} [2021-03-24 13:31:44,251 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 820 predicate places. [2021-03-24 13:31:44,251 INFO L480 AbstractCegarLoop]: Abstraction has has 851 places, 1142 transitions, 35580 flow [2021-03-24 13:31:44,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:44,251 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:44,252 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:44,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-24 13:31:44,252 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2099162760, now seen corresponding path program 105 times [2021-03-24 13:31:44,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:44,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903562555] [2021-03-24 13:31:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:44,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:44,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:44,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:44,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:44,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:44,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:44,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:44,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:44,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:44,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:44,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:44,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:44,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:44,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:44,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:44,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:44,331 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:44,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:44,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903562555] [2021-03-24 13:31:44,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:44,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:31:44,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437227114] [2021-03-24 13:31:44,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:31:44,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:44,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:31:44,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:31:44,335 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:44,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 851 places, 1142 transitions, 35580 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:44,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:44,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:44,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:45,386 INFO L129 PetriNetUnfolder]: 702/1490 cut-off events. [2021-03-24 13:31:45,386 INFO L130 PetriNetUnfolder]: For 277278/277278 co-relation queries the response was YES. [2021-03-24 13:31:45,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29509 conditions, 1490 events. 702/1490 cut-off events. For 277278/277278 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 10613 event pairs, 11 based on Foata normal form. 1/1491 useless extension candidates. Maximal degree in co-relation 29052. Up to 1212 conditions per place. [2021-03-24 13:31:45,434 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1002 selfloop transitions, 141 changer transitions 15/1162 dead transitions. [2021-03-24 13:31:45,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1162 transitions, 39884 flow [2021-03-24 13:31:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:31:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:31:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:31:45,435 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:31:45,435 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:31:45,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:31:45,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:45,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:31:45,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:45,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:45,436 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:45,436 INFO L185 Difference]: Start difference. First operand has 851 places, 1142 transitions, 35580 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:31:45,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1162 transitions, 39884 flow [2021-03-24 13:31:48,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 1162 transitions, 39301 flow, removed 157 selfloop flow, removed 12 redundant places. [2021-03-24 13:31:48,512 INFO L241 Difference]: Finished difference. Result has 854 places, 1137 transitions, 35798 flow [2021-03-24 13:31:48,512 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35005, PETRI_DIFFERENCE_MINUEND_PLACES=839, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1002, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35798, PETRI_PLACES=854, PETRI_TRANSITIONS=1137} [2021-03-24 13:31:48,512 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 823 predicate places. [2021-03-24 13:31:48,512 INFO L480 AbstractCegarLoop]: Abstraction has has 854 places, 1137 transitions, 35798 flow [2021-03-24 13:31:48,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:48,512 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:48,512 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:48,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-24 13:31:48,513 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:48,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1997263646, now seen corresponding path program 106 times [2021-03-24 13:31:48,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:48,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014273152] [2021-03-24 13:31:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:48,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:48,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:48,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:48,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:48,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:48,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:48,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:48,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:48,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:48,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:48,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:48,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:48,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:48,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:48,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:48,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:48,587 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:48,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:48,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014273152] [2021-03-24 13:31:48,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:48,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:31:48,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742837188] [2021-03-24 13:31:48,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:31:48,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:48,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:31:48,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:31:48,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:48,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 854 places, 1137 transitions, 35798 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:48,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:48,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:48,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:49,592 INFO L129 PetriNetUnfolder]: 699/1483 cut-off events. [2021-03-24 13:31:49,592 INFO L130 PetriNetUnfolder]: For 279892/279892 co-relation queries the response was YES. [2021-03-24 13:31:49,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29569 conditions, 1483 events. 699/1483 cut-off events. For 279892/279892 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 10499 event pairs, 8 based on Foata normal form. 1/1484 useless extension candidates. Maximal degree in co-relation 29112. Up to 1287 conditions per place. [2021-03-24 13:31:49,634 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1067 selfloop transitions, 80 changer transitions 7/1158 dead transitions. [2021-03-24 13:31:49,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 862 places, 1158 transitions, 39752 flow [2021-03-24 13:31:49,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:31:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:31:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:31:49,635 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:31:49,635 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:31:49,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:31:49,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:49,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:31:49,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:49,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:49,636 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:49,636 INFO L185 Difference]: Start difference. First operand has 854 places, 1137 transitions, 35798 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:31:49,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 862 places, 1158 transitions, 39752 flow [2021-03-24 13:31:52,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 851 places, 1158 transitions, 39002 flow, removed 257 selfloop flow, removed 11 redundant places. [2021-03-24 13:31:52,835 INFO L241 Difference]: Finished difference. Result has 855 places, 1141 transitions, 36101 flow [2021-03-24 13:31:52,835 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35050, PETRI_DIFFERENCE_MINUEND_PLACES=843, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1058, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36101, PETRI_PLACES=855, PETRI_TRANSITIONS=1141} [2021-03-24 13:31:52,836 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 824 predicate places. [2021-03-24 13:31:52,836 INFO L480 AbstractCegarLoop]: Abstraction has has 855 places, 1141 transitions, 36101 flow [2021-03-24 13:31:52,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:52,836 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:52,836 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:52,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-24 13:31:52,836 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:52,836 INFO L82 PathProgramCache]: Analyzing trace with hash -735822716, now seen corresponding path program 107 times [2021-03-24 13:31:52,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:52,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755788897] [2021-03-24 13:31:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:52,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:52,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:52,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:52,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:52,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:52,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:52,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:52,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:52,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:52,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:52,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:52,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:52,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:52,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:52,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:52,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:52,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:52,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:52,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755788897] [2021-03-24 13:31:52,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:52,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:31:52,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130186780] [2021-03-24 13:31:52,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:31:52,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:52,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:31:52,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:31:52,904 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:52,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 855 places, 1141 transitions, 36101 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:52,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:52,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:52,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:53,904 INFO L129 PetriNetUnfolder]: 702/1487 cut-off events. [2021-03-24 13:31:53,904 INFO L130 PetriNetUnfolder]: For 293901/293901 co-relation queries the response was YES. [2021-03-24 13:31:53,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30038 conditions, 1487 events. 702/1487 cut-off events. For 293901/293901 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 10532 event pairs, 4 based on Foata normal form. 1/1488 useless extension candidates. Maximal degree in co-relation 29579. Up to 1342 conditions per place. [2021-03-24 13:31:53,951 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1086 selfloop transitions, 64 changer transitions 5/1159 dead transitions. [2021-03-24 13:31:53,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 863 places, 1159 transitions, 40545 flow [2021-03-24 13:31:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:31:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:31:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:31:53,952 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:31:53,952 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:31:53,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:31:53,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:53,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:31:53,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:53,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:53,953 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:53,953 INFO L185 Difference]: Start difference. First operand has 855 places, 1141 transitions, 36101 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:31:53,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 863 places, 1159 transitions, 40545 flow [2021-03-24 13:31:57,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 854 places, 1159 transitions, 39763 flow, removed 306 selfloop flow, removed 9 redundant places. [2021-03-24 13:31:57,226 INFO L241 Difference]: Finished difference. Result has 859 places, 1147 transitions, 36652 flow [2021-03-24 13:31:57,227 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35335, PETRI_DIFFERENCE_MINUEND_PLACES=846, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1080, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36652, PETRI_PLACES=859, PETRI_TRANSITIONS=1147} [2021-03-24 13:31:57,227 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 828 predicate places. [2021-03-24 13:31:57,227 INFO L480 AbstractCegarLoop]: Abstraction has has 859 places, 1147 transitions, 36652 flow [2021-03-24 13:31:57,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:57,227 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:31:57,228 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:31:57,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-24 13:31:57,228 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:31:57,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:31:57,228 INFO L82 PathProgramCache]: Analyzing trace with hash 402468606, now seen corresponding path program 108 times [2021-03-24 13:31:57,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:31:57,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047011239] [2021-03-24 13:31:57,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:31:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:31:57,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:57,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:57,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:57,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:57,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:57,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:57,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:57,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:31:57,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:57,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:31:57,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:57,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:57,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:57,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:57,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:31:57,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:31:57,299 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:31:57,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:31:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:31:57,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047011239] [2021-03-24 13:31:57,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:31:57,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:31:57,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6268128] [2021-03-24 13:31:57,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:31:57,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:31:57,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:31:57,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:31:57,302 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:31:57,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 859 places, 1147 transitions, 36652 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:57,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:31:57,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:31:57,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:31:58,328 INFO L129 PetriNetUnfolder]: 703/1494 cut-off events. [2021-03-24 13:31:58,329 INFO L130 PetriNetUnfolder]: For 304148/304148 co-relation queries the response was YES. [2021-03-24 13:31:58,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30272 conditions, 1494 events. 703/1494 cut-off events. For 304148/304148 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 10597 event pairs, 6 based on Foata normal form. 1/1495 useless extension candidates. Maximal degree in co-relation 29812. Up to 1334 conditions per place. [2021-03-24 13:31:58,371 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1086 selfloop transitions, 64 changer transitions 12/1166 dead transitions. [2021-03-24 13:31:58,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 867 places, 1166 transitions, 41001 flow [2021-03-24 13:31:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:31:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:31:58,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:31:58,372 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:31:58,372 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:31:58,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:31:58,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:31:58,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:31:58,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:58,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:58,373 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:31:58,373 INFO L185 Difference]: Start difference. First operand has 859 places, 1147 transitions, 36652 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:31:58,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 867 places, 1166 transitions, 41001 flow [2021-03-24 13:32:01,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 863 places, 1166 transitions, 40188 flow, removed 382 selfloop flow, removed 4 redundant places. [2021-03-24 13:32:01,785 INFO L241 Difference]: Finished difference. Result has 868 places, 1146 transitions, 36591 flow [2021-03-24 13:32:01,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35843, PETRI_DIFFERENCE_MINUEND_PLACES=855, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36591, PETRI_PLACES=868, PETRI_TRANSITIONS=1146} [2021-03-24 13:32:01,786 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 837 predicate places. [2021-03-24 13:32:01,786 INFO L480 AbstractCegarLoop]: Abstraction has has 868 places, 1146 transitions, 36591 flow [2021-03-24 13:32:01,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:01,786 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:01,786 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:01,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-24 13:32:01,786 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:01,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:01,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1032762606, now seen corresponding path program 109 times [2021-03-24 13:32:01,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:01,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670752961] [2021-03-24 13:32:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:01,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:01,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:01,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:01,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:01,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:01,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:01,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:01,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:01,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:01,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:01,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:01,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:01,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:01,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:01,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:01,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:01,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:01,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:01,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670752961] [2021-03-24 13:32:01,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:01,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:01,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039057681] [2021-03-24 13:32:01,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:01,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:01,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:01,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:01,860 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:01,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 868 places, 1146 transitions, 36591 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:01,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:01,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:01,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:02,897 INFO L129 PetriNetUnfolder]: 702/1493 cut-off events. [2021-03-24 13:32:02,897 INFO L130 PetriNetUnfolder]: For 307787/307787 co-relation queries the response was YES. [2021-03-24 13:32:02,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30304 conditions, 1493 events. 702/1493 cut-off events. For 307787/307787 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 10626 event pairs, 5 based on Foata normal form. 1/1494 useless extension candidates. Maximal degree in co-relation 29840. Up to 1326 conditions per place. [2021-03-24 13:32:02,940 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1057 selfloop transitions, 98 changer transitions 5/1164 dead transitions. [2021-03-24 13:32:02,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 877 places, 1164 transitions, 41093 flow [2021-03-24 13:32:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:32:02,941 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:32:02,941 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:32:02,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:32:02,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:02,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:32:02,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:02,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:02,942 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:02,942 INFO L185 Difference]: Start difference. First operand has 868 places, 1146 transitions, 36591 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:32:02,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 877 places, 1164 transitions, 41093 flow [2021-03-24 13:32:06,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 870 places, 1164 transitions, 40377 flow, removed 314 selfloop flow, removed 7 redundant places. [2021-03-24 13:32:06,368 INFO L241 Difference]: Finished difference. Result has 875 places, 1152 transitions, 37325 flow [2021-03-24 13:32:06,369 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35877, PETRI_DIFFERENCE_MINUEND_PLACES=861, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1051, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=37325, PETRI_PLACES=875, PETRI_TRANSITIONS=1152} [2021-03-24 13:32:06,369 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 844 predicate places. [2021-03-24 13:32:06,369 INFO L480 AbstractCegarLoop]: Abstraction has has 875 places, 1152 transitions, 37325 flow [2021-03-24 13:32:06,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:06,369 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:06,369 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:06,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-24 13:32:06,369 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:06,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1594102600, now seen corresponding path program 110 times [2021-03-24 13:32:06,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:06,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272536736] [2021-03-24 13:32:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:06,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:06,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:06,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:06,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:06,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:06,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:06,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:06,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:06,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:06,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:06,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:06,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:06,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:06,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:06,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:06,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:06,440 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:06,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:06,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272536736] [2021-03-24 13:32:06,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:06,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:06,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166757210] [2021-03-24 13:32:06,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:06,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:06,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:06,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:06,443 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:06,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 875 places, 1152 transitions, 37325 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:06,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:06,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:06,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:07,460 INFO L129 PetriNetUnfolder]: 703/1499 cut-off events. [2021-03-24 13:32:07,460 INFO L130 PetriNetUnfolder]: For 315918/315918 co-relation queries the response was YES. [2021-03-24 13:32:07,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30677 conditions, 1499 events. 703/1499 cut-off events. For 315918/315918 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 10679 event pairs, 9 based on Foata normal form. 1/1500 useless extension candidates. Maximal degree in co-relation 30211. Up to 1324 conditions per place. [2021-03-24 13:32:07,504 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1060 selfloop transitions, 97 changer transitions 9/1170 dead transitions. [2021-03-24 13:32:07,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 1170 transitions, 41701 flow [2021-03-24 13:32:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:07,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:32:07,504 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:32:07,505 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:32:07,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:32:07,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:07,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:32:07,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:07,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:07,505 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:07,505 INFO L185 Difference]: Start difference. First operand has 875 places, 1152 transitions, 37325 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:32:07,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 1170 transitions, 41701 flow [2021-03-24 13:32:11,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 879 places, 1170 transitions, 40865 flow, removed 387 selfloop flow, removed 5 redundant places. [2021-03-24 13:32:11,023 INFO L241 Difference]: Finished difference. Result has 884 places, 1153 transitions, 37640 flow [2021-03-24 13:32:11,024 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=36491, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1057, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=37640, PETRI_PLACES=884, PETRI_TRANSITIONS=1153} [2021-03-24 13:32:11,024 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 853 predicate places. [2021-03-24 13:32:11,024 INFO L480 AbstractCegarLoop]: Abstraction has has 884 places, 1153 transitions, 37640 flow [2021-03-24 13:32:11,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:11,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:11,024 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:11,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-24 13:32:11,025 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:11,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:11,025 INFO L82 PathProgramCache]: Analyzing trace with hash -407439834, now seen corresponding path program 111 times [2021-03-24 13:32:11,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:11,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420858828] [2021-03-24 13:32:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:11,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:11,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:11,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:11,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:11,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:11,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:11,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:11,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:11,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:11,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:32:11,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:11,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:11,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:11,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:11,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:11,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:11,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:11,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:11,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420858828] [2021-03-24 13:32:11,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:11,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:11,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678471079] [2021-03-24 13:32:11,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:11,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:11,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:11,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:11,097 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:11,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 1153 transitions, 37640 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:11,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:11,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:11,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:12,227 INFO L129 PetriNetUnfolder]: 705/1503 cut-off events. [2021-03-24 13:32:12,227 INFO L130 PetriNetUnfolder]: For 331445/331445 co-relation queries the response was YES. [2021-03-24 13:32:12,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31109 conditions, 1503 events. 705/1503 cut-off events. For 331445/331445 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 10743 event pairs, 5 based on Foata normal form. 1/1504 useless extension candidates. Maximal degree in co-relation 30639. Up to 1364 conditions per place. [2021-03-24 13:32:12,263 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1112 selfloop transitions, 52 changer transitions 4/1172 dead transitions. [2021-03-24 13:32:12,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 1172 transitions, 42380 flow [2021-03-24 13:32:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2021-03-24 13:32:12,264 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5826923076923077 [2021-03-24 13:32:12,264 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2021-03-24 13:32:12,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2021-03-24 13:32:12,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:12,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2021-03-24 13:32:12,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:12,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:12,265 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:12,265 INFO L185 Difference]: Start difference. First operand has 884 places, 1153 transitions, 37640 flow. Second operand 10 states and 303 transitions. [2021-03-24 13:32:12,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 1172 transitions, 42380 flow [2021-03-24 13:32:16,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 884 places, 1172 transitions, 41570 flow, removed 329 selfloop flow, removed 9 redundant places. [2021-03-24 13:32:16,064 INFO L241 Difference]: Finished difference. Result has 887 places, 1161 transitions, 38577 flow [2021-03-24 13:32:16,064 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=36846, PETRI_DIFFERENCE_MINUEND_PLACES=875, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=38577, PETRI_PLACES=887, PETRI_TRANSITIONS=1161} [2021-03-24 13:32:16,065 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 856 predicate places. [2021-03-24 13:32:16,065 INFO L480 AbstractCegarLoop]: Abstraction has has 887 places, 1161 transitions, 38577 flow [2021-03-24 13:32:16,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:16,065 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:16,065 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:16,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-24 13:32:16,065 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:16,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:16,065 INFO L82 PathProgramCache]: Analyzing trace with hash 463327616, now seen corresponding path program 112 times [2021-03-24 13:32:16,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:16,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264785860] [2021-03-24 13:32:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:16,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:16,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:16,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:16,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:16,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:16,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:16,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:16,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:16,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:16,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:32:16,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:16,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:16,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:16,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:16,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:16,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:16,130 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:16,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:16,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:16,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264785860] [2021-03-24 13:32:16,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:16,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:16,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601388688] [2021-03-24 13:32:16,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:16,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:16,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:16,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:16,133 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:16,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 1161 transitions, 38577 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:16,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:16,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:16,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:17,250 INFO L129 PetriNetUnfolder]: 709/1514 cut-off events. [2021-03-24 13:32:17,250 INFO L130 PetriNetUnfolder]: For 342008/342008 co-relation queries the response was YES. [2021-03-24 13:32:17,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31386 conditions, 1514 events. 709/1514 cut-off events. For 342008/342008 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 10816 event pairs, 6 based on Foata normal form. 1/1515 useless extension candidates. Maximal degree in co-relation 30916. Up to 1357 conditions per place. [2021-03-24 13:32:17,300 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1120 selfloop transitions, 55 changer transitions 4/1183 dead transitions. [2021-03-24 13:32:17,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 1183 transitions, 42871 flow [2021-03-24 13:32:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:32:17,301 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:32:17,301 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:32:17,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:32:17,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:17,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:32:17,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:17,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:17,302 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:17,302 INFO L185 Difference]: Start difference. First operand has 887 places, 1161 transitions, 38577 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:32:17,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 1183 transitions, 42871 flow [2021-03-24 13:32:20,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 1183 transitions, 41633 flow, removed 598 selfloop flow, removed 5 redundant places. [2021-03-24 13:32:20,982 INFO L241 Difference]: Finished difference. Result has 897 places, 1170 transitions, 38570 flow [2021-03-24 13:32:20,983 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=37345, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=38570, PETRI_PLACES=897, PETRI_TRANSITIONS=1170} [2021-03-24 13:32:20,983 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 866 predicate places. [2021-03-24 13:32:20,983 INFO L480 AbstractCegarLoop]: Abstraction has has 897 places, 1170 transitions, 38570 flow [2021-03-24 13:32:20,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:20,983 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:20,984 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:20,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-24 13:32:20,984 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:20,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:20,984 INFO L82 PathProgramCache]: Analyzing trace with hash -609757764, now seen corresponding path program 113 times [2021-03-24 13:32:20,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:20,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347712909] [2021-03-24 13:32:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:20,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:20,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:21,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:21,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:21,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:21,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:21,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:21,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:21,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:21,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:21,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:21,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:21,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:21,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:21,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:21,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:21,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:21,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:21,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347712909] [2021-03-24 13:32:21,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:21,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:21,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214430530] [2021-03-24 13:32:21,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:21,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:21,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:21,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:21,070 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:21,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 897 places, 1170 transitions, 38570 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:21,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:21,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:21,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:22,184 INFO L129 PetriNetUnfolder]: 711/1523 cut-off events. [2021-03-24 13:32:22,184 INFO L130 PetriNetUnfolder]: For 341473/341473 co-relation queries the response was YES. [2021-03-24 13:32:22,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31522 conditions, 1523 events. 711/1523 cut-off events. For 341473/341473 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 10948 event pairs, 6 based on Foata normal form. 1/1524 useless extension candidates. Maximal degree in co-relation 31047. Up to 1364 conditions per place. [2021-03-24 13:32:22,229 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1134 selfloop transitions, 46 changer transitions 5/1189 dead transitions. [2021-03-24 13:32:22,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 1189 transitions, 42907 flow [2021-03-24 13:32:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:32:22,230 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:32:22,230 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:32:22,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:32:22,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:22,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:32:22,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:22,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:22,231 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:22,231 INFO L185 Difference]: Start difference. First operand has 897 places, 1170 transitions, 38570 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:32:22,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 1189 transitions, 42907 flow [2021-03-24 13:32:25,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 900 places, 1189 transitions, 42180 flow, removed 333 selfloop flow, removed 6 redundant places. [2021-03-24 13:32:25,992 INFO L241 Difference]: Finished difference. Result has 903 places, 1175 transitions, 39240 flow [2021-03-24 13:32:25,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=37845, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=39240, PETRI_PLACES=903, PETRI_TRANSITIONS=1175} [2021-03-24 13:32:25,993 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 872 predicate places. [2021-03-24 13:32:25,993 INFO L480 AbstractCegarLoop]: Abstraction has has 903 places, 1175 transitions, 39240 flow [2021-03-24 13:32:25,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:25,993 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:25,993 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:25,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-24 13:32:25,993 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:25,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:25,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1956162198, now seen corresponding path program 114 times [2021-03-24 13:32:25,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:25,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989646431] [2021-03-24 13:32:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:26,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:26,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:26,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:26,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:26,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:26,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:26,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:26,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:26,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:26,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:26,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:26,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:26,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:26,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:26,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:26,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:26,085 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:26,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:26,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989646431] [2021-03-24 13:32:26,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:26,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:26,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153350129] [2021-03-24 13:32:26,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:26,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:26,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:26,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:26,089 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:26,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 903 places, 1175 transitions, 39240 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:26,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:26,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:26,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:27,185 INFO L129 PetriNetUnfolder]: 713/1528 cut-off events. [2021-03-24 13:32:27,186 INFO L130 PetriNetUnfolder]: For 347962/347962 co-relation queries the response was YES. [2021-03-24 13:32:27,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31926 conditions, 1528 events. 713/1528 cut-off events. For 347962/347962 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 11032 event pairs, 6 based on Foata normal form. 1/1529 useless extension candidates. Maximal degree in co-relation 31450. Up to 1379 conditions per place. [2021-03-24 13:32:27,236 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1142 selfloop transitions, 40 changer transitions 7/1193 dead transitions. [2021-03-24 13:32:27,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 1193 transitions, 43603 flow [2021-03-24 13:32:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:27,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:32:27,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:32:27,237 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:32:27,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:32:27,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:27,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:32:27,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:27,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:27,237 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:27,238 INFO L185 Difference]: Start difference. First operand has 903 places, 1175 transitions, 39240 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:32:27,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 1193 transitions, 43603 flow [2021-03-24 13:32:31,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 906 places, 1193 transitions, 42633 flow, removed 454 selfloop flow, removed 6 redundant places. [2021-03-24 13:32:31,204 INFO L241 Difference]: Finished difference. Result has 909 places, 1178 transitions, 39535 flow [2021-03-24 13:32:31,205 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38272, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=39535, PETRI_PLACES=909, PETRI_TRANSITIONS=1178} [2021-03-24 13:32:31,205 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 878 predicate places. [2021-03-24 13:32:31,205 INFO L480 AbstractCegarLoop]: Abstraction has has 909 places, 1178 transitions, 39535 flow [2021-03-24 13:32:31,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:31,205 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:31,205 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:31,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-24 13:32:31,206 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:31,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:31,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2136487168, now seen corresponding path program 115 times [2021-03-24 13:32:31,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:31,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512933981] [2021-03-24 13:32:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:31,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:31,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:31,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:31,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:31,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:31,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:31,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:31,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:31,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:31,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:32:31,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:31,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:31,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:31,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:31,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:31,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:31,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:31,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:31,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512933981] [2021-03-24 13:32:31,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:31,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:31,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360903872] [2021-03-24 13:32:31,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:31,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:31,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:31,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:31,291 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:31,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 909 places, 1178 transitions, 39535 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:31,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:31,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:31,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:32,486 INFO L129 PetriNetUnfolder]: 717/1537 cut-off events. [2021-03-24 13:32:32,486 INFO L130 PetriNetUnfolder]: For 377576/377576 co-relation queries the response was YES. [2021-03-24 13:32:32,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32467 conditions, 1537 events. 717/1537 cut-off events. For 377576/377576 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 11067 event pairs, 5 based on Foata normal form. 1/1538 useless extension candidates. Maximal degree in co-relation 31990. Up to 1372 conditions per place. [2021-03-24 13:32:32,529 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1106 selfloop transitions, 84 changer transitions 4/1198 dead transitions. [2021-03-24 13:32:32,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 1198 transitions, 44618 flow [2021-03-24 13:32:32,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:32:32,530 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:32:32,530 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:32:32,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:32:32,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:32,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:32:32,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:32,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:32,531 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:32,532 INFO L185 Difference]: Start difference. First operand has 909 places, 1178 transitions, 39535 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:32:32,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 1198 transitions, 44618 flow [2021-03-24 13:32:36,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 908 places, 1198 transitions, 43412 flow, removed 546 selfloop flow, removed 10 redundant places. [2021-03-24 13:32:36,831 INFO L241 Difference]: Finished difference. Result has 911 places, 1187 transitions, 40309 flow [2021-03-24 13:32:36,832 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38331, PETRI_DIFFERENCE_MINUEND_PLACES=899, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1098, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=40309, PETRI_PLACES=911, PETRI_TRANSITIONS=1187} [2021-03-24 13:32:36,832 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 880 predicate places. [2021-03-24 13:32:36,832 INFO L480 AbstractCegarLoop]: Abstraction has has 911 places, 1187 transitions, 40309 flow [2021-03-24 13:32:36,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:36,832 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:36,833 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:36,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-24 13:32:36,833 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:36,833 INFO L82 PathProgramCache]: Analyzing trace with hash -418143462, now seen corresponding path program 116 times [2021-03-24 13:32:36,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:36,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386896242] [2021-03-24 13:32:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:36,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:36,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:36,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:36,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:36,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:36,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:36,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:36,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:36,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:36,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:32:36,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:36,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:36,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:36,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:36,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:36,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:36,903 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:36,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:36,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386896242] [2021-03-24 13:32:36,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:36,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:36,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438420860] [2021-03-24 13:32:36,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:36,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:36,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:36,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:36,906 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:36,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 911 places, 1187 transitions, 40309 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:36,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:36,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:36,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:38,125 INFO L129 PetriNetUnfolder]: 723/1552 cut-off events. [2021-03-24 13:32:38,126 INFO L130 PetriNetUnfolder]: For 397912/397912 co-relation queries the response was YES. [2021-03-24 13:32:38,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33121 conditions, 1552 events. 723/1552 cut-off events. For 397912/397912 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 11242 event pairs, 10 based on Foata normal form. 1/1553 useless extension candidates. Maximal degree in co-relation 32643. Up to 1357 conditions per place. [2021-03-24 13:32:38,174 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1106 selfloop transitions, 97 changer transitions 8/1215 dead transitions. [2021-03-24 13:32:38,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 1215 transitions, 45821 flow [2021-03-24 13:32:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:32:38,175 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:32:38,175 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:32:38,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:32:38,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:38,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:32:38,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:38,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:38,176 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:38,176 INFO L185 Difference]: Start difference. First operand has 911 places, 1187 transitions, 40309 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:32:38,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 1215 transitions, 45821 flow [2021-03-24 13:32:42,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 914 places, 1215 transitions, 44361 flow, removed 694 selfloop flow, removed 6 redundant places. [2021-03-24 13:32:42,545 INFO L241 Difference]: Finished difference. Result has 920 places, 1199 transitions, 40897 flow [2021-03-24 13:32:42,546 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=39015, PETRI_DIFFERENCE_MINUEND_PLACES=905, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1092, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=40897, PETRI_PLACES=920, PETRI_TRANSITIONS=1199} [2021-03-24 13:32:42,546 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 889 predicate places. [2021-03-24 13:32:42,546 INFO L480 AbstractCegarLoop]: Abstraction has has 920 places, 1199 transitions, 40897 flow [2021-03-24 13:32:42,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:42,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:42,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:42,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-24 13:32:42,546 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:42,547 INFO L82 PathProgramCache]: Analyzing trace with hash 558470976, now seen corresponding path program 117 times [2021-03-24 13:32:42,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:42,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178731461] [2021-03-24 13:32:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:42,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:42,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:42,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:42,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:42,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:42,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:42,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:42,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:42,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:42,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:32:42,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:42,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:42,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:42,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:42,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:42,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:42,614 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:42,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:42,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178731461] [2021-03-24 13:32:42,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:42,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:42,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219734575] [2021-03-24 13:32:42,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:42,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:42,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:42,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:42,617 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:42,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 1199 transitions, 40897 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:42,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:42,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:42,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:43,837 INFO L129 PetriNetUnfolder]: 725/1563 cut-off events. [2021-03-24 13:32:43,837 INFO L130 PetriNetUnfolder]: For 397487/397487 co-relation queries the response was YES. [2021-03-24 13:32:43,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33317 conditions, 1563 events. 725/1563 cut-off events. For 397487/397487 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 11390 event pairs, 4 based on Foata normal form. 1/1564 useless extension candidates. Maximal degree in co-relation 32834. Up to 1371 conditions per place. [2021-03-24 13:32:43,887 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1096 selfloop transitions, 112 changer transitions 7/1219 dead transitions. [2021-03-24 13:32:43,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 1219 transitions, 45957 flow [2021-03-24 13:32:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:32:43,888 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:32:43,888 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:32:43,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:32:43,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:43,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:32:43,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:43,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:43,889 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:43,889 INFO L185 Difference]: Start difference. First operand has 920 places, 1199 transitions, 40897 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:32:43,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 1219 transitions, 45957 flow [2021-03-24 13:32:48,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 923 places, 1219 transitions, 44653 flow, removed 606 selfloop flow, removed 6 redundant places. [2021-03-24 13:32:48,610 INFO L241 Difference]: Finished difference. Result has 927 places, 1205 transitions, 41033 flow [2021-03-24 13:32:48,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=39613, PETRI_DIFFERENCE_MINUEND_PLACES=914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=41033, PETRI_PLACES=927, PETRI_TRANSITIONS=1205} [2021-03-24 13:32:48,610 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 896 predicate places. [2021-03-24 13:32:48,611 INFO L480 AbstractCegarLoop]: Abstraction has has 927 places, 1205 transitions, 41033 flow [2021-03-24 13:32:48,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:48,611 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:48,611 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:48,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-24 13:32:48,611 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:48,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1255016090, now seen corresponding path program 118 times [2021-03-24 13:32:48,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:48,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963476536] [2021-03-24 13:32:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:48,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:48,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:48,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:48,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:48,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:48,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:48,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:48,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:48,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:48,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:32:48,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:48,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:48,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:48,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:48,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:48,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:48,682 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:48,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:48,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963476536] [2021-03-24 13:32:48,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:48,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:32:48,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349182075] [2021-03-24 13:32:48,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:32:48,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:48,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:32:48,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:32:48,685 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:48,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1205 transitions, 41033 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:48,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:48,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:48,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:49,918 INFO L129 PetriNetUnfolder]: 729/1572 cut-off events. [2021-03-24 13:32:49,918 INFO L130 PetriNetUnfolder]: For 396859/396859 co-relation queries the response was YES. [2021-03-24 13:32:49,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33227 conditions, 1572 events. 729/1572 cut-off events. For 396859/396859 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 11507 event pairs, 6 based on Foata normal form. 1/1573 useless extension candidates. Maximal degree in co-relation 32741. Up to 1373 conditions per place. [2021-03-24 13:32:49,970 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1142 selfloop transitions, 76 changer transitions 8/1230 dead transitions. [2021-03-24 13:32:49,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 1230 transitions, 45715 flow [2021-03-24 13:32:49,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:32:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:32:49,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:32:49,971 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:32:49,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:32:49,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:32:49,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:49,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:32:49,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:49,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:49,972 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:49,972 INFO L185 Difference]: Start difference. First operand has 927 places, 1205 transitions, 41033 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:32:49,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 1230 transitions, 45715 flow [2021-03-24 13:32:54,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 929 places, 1230 transitions, 44909 flow, removed 338 selfloop flow, removed 7 redundant places. [2021-03-24 13:32:54,590 INFO L241 Difference]: Finished difference. Result has 935 places, 1213 transitions, 41330 flow [2021-03-24 13:32:54,590 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=40229, PETRI_DIFFERENCE_MINUEND_PLACES=920, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=41330, PETRI_PLACES=935, PETRI_TRANSITIONS=1213} [2021-03-24 13:32:54,590 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 904 predicate places. [2021-03-24 13:32:54,590 INFO L480 AbstractCegarLoop]: Abstraction has has 935 places, 1213 transitions, 41330 flow [2021-03-24 13:32:54,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:54,591 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:32:54,591 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:32:54,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-24 13:32:54,591 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:32:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:32:54,591 INFO L82 PathProgramCache]: Analyzing trace with hash 581067524, now seen corresponding path program 119 times [2021-03-24 13:32:54,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:32:54,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433343727] [2021-03-24 13:32:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:32:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:32:54,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:54,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:54,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:54,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:54,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:54,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:54,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:54,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:54,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:54,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:32:54,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:54,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:32:54,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:54,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:32:54,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:32:54,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:32:54,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:32:54,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:32:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:32:54,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433343727] [2021-03-24 13:32:54,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:32:54,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:32:54,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783366974] [2021-03-24 13:32:54,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:32:54,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:32:54,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:32:54,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:32:54,665 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:32:54,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 1213 transitions, 41330 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:54,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:32:54,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:32:54,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:32:56,170 INFO L129 PetriNetUnfolder]: 731/1576 cut-off events. [2021-03-24 13:32:56,170 INFO L130 PetriNetUnfolder]: For 405552/405552 co-relation queries the response was YES. [2021-03-24 13:32:56,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33332 conditions, 1576 events. 731/1576 cut-off events. For 405552/405552 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 11490 event pairs, 4 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 32841. Up to 1415 conditions per place. [2021-03-24 13:32:56,221 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1174 selfloop transitions, 52 changer transitions 3/1233 dead transitions. [2021-03-24 13:32:56,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 943 places, 1233 transitions, 45670 flow [2021-03-24 13:32:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:32:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:32:56,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:32:56,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:32:56,222 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:32:56,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:32:56,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:32:56,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:32:56,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:56,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:56,223 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:32:56,223 INFO L185 Difference]: Start difference. First operand has 935 places, 1213 transitions, 41330 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:32:56,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 943 places, 1233 transitions, 45670 flow [2021-03-24 13:33:00,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 1233 transitions, 44929 flow, removed 315 selfloop flow, removed 8 redundant places. [2021-03-24 13:33:00,386 INFO L241 Difference]: Finished difference. Result has 940 places, 1222 transitions, 41972 flow [2021-03-24 13:33:00,387 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=40611, PETRI_DIFFERENCE_MINUEND_PLACES=927, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41972, PETRI_PLACES=940, PETRI_TRANSITIONS=1222} [2021-03-24 13:33:00,387 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 909 predicate places. [2021-03-24 13:33:00,387 INFO L480 AbstractCegarLoop]: Abstraction has has 940 places, 1222 transitions, 41972 flow [2021-03-24 13:33:00,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:00,388 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:00,388 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:00,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-24 13:33:00,388 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash 61141214, now seen corresponding path program 120 times [2021-03-24 13:33:00,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:00,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36395543] [2021-03-24 13:33:00,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:00,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:00,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:00,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:00,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:00,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:00,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:00,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:00,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:00,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:00,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:33:00,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:00,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:00,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:00,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:00,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:00,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:00,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:00,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:00,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36395543] [2021-03-24 13:33:00,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:00,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:33:00,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629315486] [2021-03-24 13:33:00,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:33:00,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:00,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:33:00,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:33:00,469 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:00,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 940 places, 1222 transitions, 41972 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:00,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:00,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:00,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:01,667 INFO L129 PetriNetUnfolder]: 733/1584 cut-off events. [2021-03-24 13:33:01,667 INFO L130 PetriNetUnfolder]: For 414745/414745 co-relation queries the response was YES. [2021-03-24 13:33:01,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33793 conditions, 1584 events. 733/1584 cut-off events. For 414745/414745 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 11602 event pairs, 8 based on Foata normal form. 1/1585 useless extension candidates. Maximal degree in co-relation 33300. Up to 1354 conditions per place. [2021-03-24 13:33:01,716 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1130 selfloop transitions, 99 changer transitions 8/1241 dead transitions. [2021-03-24 13:33:01,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 949 places, 1241 transitions, 46580 flow [2021-03-24 13:33:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:33:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:33:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:33:01,717 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:33:01,717 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:33:01,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:33:01,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:01,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:33:01,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:01,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:01,718 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:01,718 INFO L185 Difference]: Start difference. First operand has 940 places, 1222 transitions, 41972 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:33:01,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 949 places, 1241 transitions, 46580 flow [2021-03-24 13:33:06,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 1241 transitions, 45846 flow, removed 349 selfloop flow, removed 4 redundant places. [2021-03-24 13:33:06,726 INFO L241 Difference]: Finished difference. Result has 950 places, 1223 transitions, 42261 flow [2021-03-24 13:33:06,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=41238, PETRI_DIFFERENCE_MINUEND_PLACES=936, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=42261, PETRI_PLACES=950, PETRI_TRANSITIONS=1223} [2021-03-24 13:33:06,727 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 919 predicate places. [2021-03-24 13:33:06,727 INFO L480 AbstractCegarLoop]: Abstraction has has 950 places, 1223 transitions, 42261 flow [2021-03-24 13:33:06,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:06,727 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:06,727 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:06,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-24 13:33:06,727 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:06,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:06,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1653039970, now seen corresponding path program 121 times [2021-03-24 13:33:06,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:06,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380322274] [2021-03-24 13:33:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:06,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:06,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:06,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:06,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:06,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:06,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:06,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:06,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:06,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:06,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:33:06,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:06,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:06,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:06,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:06,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:06,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:06,804 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:06,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:06,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380322274] [2021-03-24 13:33:06,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:06,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:33:06,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006267846] [2021-03-24 13:33:06,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:33:06,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:06,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:33:06,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:33:06,807 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:06,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 950 places, 1223 transitions, 42261 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:06,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:06,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:06,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:08,078 INFO L129 PetriNetUnfolder]: 733/1582 cut-off events. [2021-03-24 13:33:08,078 INFO L130 PetriNetUnfolder]: For 413949/413949 co-relation queries the response was YES. [2021-03-24 13:33:08,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33921 conditions, 1582 events. 733/1582 cut-off events. For 413949/413949 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 11608 event pairs, 5 based on Foata normal form. 1/1583 useless extension candidates. Maximal degree in co-relation 33424. Up to 1417 conditions per place. [2021-03-24 13:33:08,125 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1183 selfloop transitions, 50 changer transitions 3/1240 dead transitions. [2021-03-24 13:33:08,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 958 places, 1240 transitions, 46565 flow [2021-03-24 13:33:08,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:33:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:33:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:33:08,126 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:33:08,126 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:33:08,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:33:08,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:08,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:33:08,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:08,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:08,127 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:08,127 INFO L185 Difference]: Start difference. First operand has 950 places, 1223 transitions, 42261 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:33:08,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 958 places, 1240 transitions, 46565 flow [2021-03-24 13:33:12,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 947 places, 1240 transitions, 45786 flow, removed 303 selfloop flow, removed 11 redundant places. [2021-03-24 13:33:12,965 INFO L241 Difference]: Finished difference. Result has 951 places, 1228 transitions, 42783 flow [2021-03-24 13:33:12,966 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=41506, PETRI_DIFFERENCE_MINUEND_PLACES=939, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42783, PETRI_PLACES=951, PETRI_TRANSITIONS=1228} [2021-03-24 13:33:12,966 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 920 predicate places. [2021-03-24 13:33:12,966 INFO L480 AbstractCegarLoop]: Abstraction has has 951 places, 1228 transitions, 42783 flow [2021-03-24 13:33:12,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:12,966 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:12,966 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:12,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-24 13:33:12,966 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:12,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:12,966 INFO L82 PathProgramCache]: Analyzing trace with hash 326272896, now seen corresponding path program 122 times [2021-03-24 13:33:12,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:12,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970826174] [2021-03-24 13:33:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:12,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:12,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:12,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:12,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:12,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:12,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:12,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:12,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:12,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:12,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:33:13,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:13,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:13,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:13,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:13,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:13,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:13,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:13,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:13,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970826174] [2021-03-24 13:33:13,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:13,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:33:13,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025901872] [2021-03-24 13:33:13,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:33:13,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:13,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:33:13,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:33:13,036 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:13,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 951 places, 1228 transitions, 42783 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:13,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:13,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:13,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:14,355 INFO L129 PetriNetUnfolder]: 738/1592 cut-off events. [2021-03-24 13:33:14,355 INFO L130 PetriNetUnfolder]: For 416770/416770 co-relation queries the response was YES. [2021-03-24 13:33:14,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34167 conditions, 1592 events. 738/1592 cut-off events. For 416770/416770 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 11729 event pairs, 5 based on Foata normal form. 1/1593 useless extension candidates. Maximal degree in co-relation 33670. Up to 1373 conditions per place. [2021-03-24 13:33:14,398 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1142 selfloop transitions, 100 changer transitions 6/1252 dead transitions. [2021-03-24 13:33:14,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 1252 transitions, 47079 flow [2021-03-24 13:33:14,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:33:14,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:33:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:33:14,399 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:33:14,400 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:33:14,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:33:14,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:14,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:33:14,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:14,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:14,400 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:14,400 INFO L185 Difference]: Start difference. First operand has 951 places, 1228 transitions, 42783 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:33:14,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 960 places, 1252 transitions, 47079 flow [2021-03-24 13:33:19,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 958 places, 1252 transitions, 46392 flow, removed 337 selfloop flow, removed 2 redundant places. [2021-03-24 13:33:19,195 INFO L241 Difference]: Finished difference. Result has 964 places, 1236 transitions, 43434 flow [2021-03-24 13:33:19,196 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=42096, PETRI_DIFFERENCE_MINUEND_PLACES=949, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=43434, PETRI_PLACES=964, PETRI_TRANSITIONS=1236} [2021-03-24 13:33:19,196 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 933 predicate places. [2021-03-24 13:33:19,196 INFO L480 AbstractCegarLoop]: Abstraction has has 964 places, 1236 transitions, 43434 flow [2021-03-24 13:33:19,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:19,196 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:19,196 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:19,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-24 13:33:19,197 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:19,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:19,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1265719718, now seen corresponding path program 123 times [2021-03-24 13:33:19,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:19,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798604474] [2021-03-24 13:33:19,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:19,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:19,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:19,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:19,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:19,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:19,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:19,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:19,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:19,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:19,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:33:19,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:19,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:19,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:19,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:19,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:19,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:19,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:19,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:19,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798604474] [2021-03-24 13:33:19,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:19,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:33:19,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939430131] [2021-03-24 13:33:19,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:33:19,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:19,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:33:19,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:33:19,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:19,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 1236 transitions, 43434 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:19,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:19,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:19,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:20,673 INFO L129 PetriNetUnfolder]: 739/1590 cut-off events. [2021-03-24 13:33:20,674 INFO L130 PetriNetUnfolder]: For 425419/425419 co-relation queries the response was YES. [2021-03-24 13:33:20,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34543 conditions, 1590 events. 739/1590 cut-off events. For 425419/425419 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 11653 event pairs, 2 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 34038. Up to 1436 conditions per place. [2021-03-24 13:33:20,714 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1196 selfloop transitions, 45 changer transitions 6/1251 dead transitions. [2021-03-24 13:33:20,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 1251 transitions, 47552 flow [2021-03-24 13:33:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:33:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:33:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:33:20,715 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:33:20,715 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:33:20,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:33:20,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:20,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:33:20,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:20,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:20,716 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:20,716 INFO L185 Difference]: Start difference. First operand has 964 places, 1236 transitions, 43434 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:33:20,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 1251 transitions, 47552 flow [2021-03-24 13:33:25,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 962 places, 1251 transitions, 46872 flow, removed 281 selfloop flow, removed 11 redundant places. [2021-03-24 13:33:25,513 INFO L241 Difference]: Finished difference. Result has 966 places, 1237 transitions, 43718 flow [2021-03-24 13:33:25,513 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=42770, PETRI_DIFFERENCE_MINUEND_PLACES=953, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=43718, PETRI_PLACES=966, PETRI_TRANSITIONS=1237} [2021-03-24 13:33:25,513 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 935 predicate places. [2021-03-24 13:33:25,513 INFO L480 AbstractCegarLoop]: Abstraction has has 966 places, 1237 transitions, 43718 flow [2021-03-24 13:33:25,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:25,513 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:25,513 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:25,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-24 13:33:25,513 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:25,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1152142332, now seen corresponding path program 124 times [2021-03-24 13:33:25,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:25,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860681343] [2021-03-24 13:33:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:25,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:25,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:25,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:25,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:25,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:25,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:25,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:25,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:25,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:25,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:33:25,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:25,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:25,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:25,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:25,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:25,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:25,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:25,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:25,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860681343] [2021-03-24 13:33:25,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:25,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:33:25,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729746807] [2021-03-24 13:33:25,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:33:25,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:25,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:33:25,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:33:25,587 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:25,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 966 places, 1237 transitions, 43718 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:25,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:25,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:25,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:26,872 INFO L129 PetriNetUnfolder]: 741/1596 cut-off events. [2021-03-24 13:33:26,872 INFO L130 PetriNetUnfolder]: For 436370/436370 co-relation queries the response was YES. [2021-03-24 13:33:26,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34890 conditions, 1596 events. 741/1596 cut-off events. For 436370/436370 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 11666 event pairs, 1 based on Foata normal form. 1/1597 useless extension candidates. Maximal degree in co-relation 34384. Up to 1444 conditions per place. [2021-03-24 13:33:26,928 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1195 selfloop transitions, 50 changer transitions 4/1253 dead transitions. [2021-03-24 13:33:26,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 975 places, 1253 transitions, 48246 flow [2021-03-24 13:33:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:33:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:33:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2021-03-24 13:33:27,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5826923076923077 [2021-03-24 13:33:27,022 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2021-03-24 13:33:27,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2021-03-24 13:33:27,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:27,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2021-03-24 13:33:27,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:27,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:27,023 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:27,023 INFO L185 Difference]: Start difference. First operand has 966 places, 1237 transitions, 43718 flow. Second operand 10 states and 303 transitions. [2021-03-24 13:33:27,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 975 places, 1253 transitions, 48246 flow [2021-03-24 13:33:31,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 965 places, 1253 transitions, 47591 flow, removed 277 selfloop flow, removed 10 redundant places. [2021-03-24 13:33:31,910 INFO L241 Difference]: Finished difference. Result has 969 places, 1242 transitions, 44345 flow [2021-03-24 13:33:31,911 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=43071, PETRI_DIFFERENCE_MINUEND_PLACES=956, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=44345, PETRI_PLACES=969, PETRI_TRANSITIONS=1242} [2021-03-24 13:33:31,911 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 938 predicate places. [2021-03-24 13:33:31,911 INFO L480 AbstractCegarLoop]: Abstraction has has 969 places, 1242 transitions, 44345 flow [2021-03-24 13:33:31,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:31,911 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:31,911 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:31,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-24 13:33:31,911 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:31,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1136681536, now seen corresponding path program 125 times [2021-03-24 13:33:31,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:31,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380954462] [2021-03-24 13:33:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:31,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:31,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:31,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:31,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:31,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:31,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:31,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:31,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:31,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:31,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:33:31,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:31,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:31,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:31,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:31,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:31,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:31,983 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:31,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:31,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380954462] [2021-03-24 13:33:31,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:31,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:33:31,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683435663] [2021-03-24 13:33:31,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:33:31,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:31,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:33:31,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:33:31,986 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:31,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 969 places, 1242 transitions, 44345 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:31,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:31,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:31,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:33,292 INFO L129 PetriNetUnfolder]: 743/1601 cut-off events. [2021-03-24 13:33:33,293 INFO L130 PetriNetUnfolder]: For 440575/440575 co-relation queries the response was YES. [2021-03-24 13:33:33,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35061 conditions, 1601 events. 743/1601 cut-off events. For 440575/440575 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 11711 event pairs, 4 based on Foata normal form. 1/1602 useless extension candidates. Maximal degree in co-relation 34554. Up to 1395 conditions per place. [2021-03-24 13:33:33,356 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1152 selfloop transitions, 99 changer transitions 5/1260 dead transitions. [2021-03-24 13:33:33,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 978 places, 1260 transitions, 48539 flow [2021-03-24 13:33:33,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:33:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:33:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:33:33,358 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:33:33,358 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:33:33,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:33:33,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:33,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:33:33,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:33,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:33,359 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:33,359 INFO L185 Difference]: Start difference. First operand has 969 places, 1242 transitions, 44345 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:33:33,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 978 places, 1260 transitions, 48539 flow [2021-03-24 13:33:38,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 974 places, 1260 transitions, 47809 flow, removed 344 selfloop flow, removed 4 redundant places. [2021-03-24 13:33:38,632 INFO L241 Difference]: Finished difference. Result has 979 places, 1246 transitions, 44839 flow [2021-03-24 13:33:38,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=43617, PETRI_DIFFERENCE_MINUEND_PLACES=965, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=44839, PETRI_PLACES=979, PETRI_TRANSITIONS=1246} [2021-03-24 13:33:38,633 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 948 predicate places. [2021-03-24 13:33:38,633 INFO L480 AbstractCegarLoop]: Abstraction has has 979 places, 1246 transitions, 44839 flow [2021-03-24 13:33:38,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:38,633 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:38,634 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:38,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-24 13:33:38,634 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2010422216, now seen corresponding path program 126 times [2021-03-24 13:33:38,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:38,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369393748] [2021-03-24 13:33:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:38,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:38,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:38,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:38,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:38,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:38,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:38,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:38,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:38,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:38,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:33:38,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:38,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:33:38,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:38,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:38,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:38,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:38,711 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:38,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:38,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369393748] [2021-03-24 13:33:38,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:38,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:33:38,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881943559] [2021-03-24 13:33:38,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:33:38,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:38,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:33:38,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:33:38,714 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:38,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 979 places, 1246 transitions, 44839 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:38,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:38,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:38,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:40,105 INFO L129 PetriNetUnfolder]: 741/1589 cut-off events. [2021-03-24 13:33:40,105 INFO L130 PetriNetUnfolder]: For 421763/421763 co-relation queries the response was YES. [2021-03-24 13:33:40,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34770 conditions, 1589 events. 741/1589 cut-off events. For 421763/421763 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 11617 event pairs, 11 based on Foata normal form. 1/1590 useless extension candidates. Maximal degree in co-relation 34258. Up to 1440 conditions per place. [2021-03-24 13:33:40,157 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1203 selfloop transitions, 43 changer transitions 11/1261 dead transitions. [2021-03-24 13:33:40,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 988 places, 1261 transitions, 49005 flow [2021-03-24 13:33:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:33:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:33:40,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:33:40,159 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:33:40,159 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:33:40,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:33:40,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:40,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:33:40,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:40,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:40,159 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:40,159 INFO L185 Difference]: Start difference. First operand has 979 places, 1246 transitions, 44839 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:33:40,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 988 places, 1261 transitions, 49005 flow [2021-03-24 13:33:45,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 979 places, 1261 transitions, 48319 flow, removed 263 selfloop flow, removed 9 redundant places. [2021-03-24 13:33:45,488 INFO L241 Difference]: Finished difference. Result has 983 places, 1244 transitions, 44494 flow [2021-03-24 13:33:45,489 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=44157, PETRI_DIFFERENCE_MINUEND_PLACES=970, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=44494, PETRI_PLACES=983, PETRI_TRANSITIONS=1244} [2021-03-24 13:33:45,489 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 952 predicate places. [2021-03-24 13:33:45,489 INFO L480 AbstractCegarLoop]: Abstraction has has 983 places, 1244 transitions, 44494 flow [2021-03-24 13:33:45,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:45,489 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:45,489 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:45,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-24 13:33:45,489 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:45,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:45,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2071829120, now seen corresponding path program 127 times [2021-03-24 13:33:45,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:45,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123421228] [2021-03-24 13:33:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:45,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:45,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:45,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:45,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:45,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:45,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:45,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:45,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:45,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:45,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:45,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:45,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:45,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:45,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:45,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:45,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:45,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:45,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:45,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123421228] [2021-03-24 13:33:45,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:45,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:33:45,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130029626] [2021-03-24 13:33:45,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:33:45,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:45,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:33:45,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:33:45,537 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:45,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 983 places, 1244 transitions, 44494 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:45,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:45,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:45,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:46,816 INFO L129 PetriNetUnfolder]: 751/1612 cut-off events. [2021-03-24 13:33:46,816 INFO L130 PetriNetUnfolder]: For 468780/468780 co-relation queries the response was YES. [2021-03-24 13:33:46,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35565 conditions, 1612 events. 751/1612 cut-off events. For 468780/468780 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 11848 event pairs, 6 based on Foata normal form. 1/1613 useless extension candidates. Maximal degree in co-relation 35051. Up to 1399 conditions per place. [2021-03-24 13:33:46,868 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1175 selfloop transitions, 79 changer transitions 6/1264 dead transitions. [2021-03-24 13:33:46,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 989 places, 1264 transitions, 48626 flow [2021-03-24 13:33:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:33:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:33:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2021-03-24 13:33:46,869 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59375 [2021-03-24 13:33:46,869 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2021-03-24 13:33:46,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2021-03-24 13:33:46,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:46,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2021-03-24 13:33:46,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:46,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:46,870 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:46,870 INFO L185 Difference]: Start difference. First operand has 983 places, 1244 transitions, 44494 flow. Second operand 8 states and 247 transitions. [2021-03-24 13:33:46,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 989 places, 1264 transitions, 48626 flow [2021-03-24 13:33:52,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 963 places, 1264 transitions, 36151 flow, removed 6128 selfloop flow, removed 26 redundant places. [2021-03-24 13:33:52,312 INFO L241 Difference]: Finished difference. Result has 968 places, 1250 transitions, 33193 flow [2021-03-24 13:33:52,313 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32033, PETRI_DIFFERENCE_MINUEND_PLACES=956, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33193, PETRI_PLACES=968, PETRI_TRANSITIONS=1250} [2021-03-24 13:33:52,313 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 937 predicate places. [2021-03-24 13:33:52,313 INFO L480 AbstractCegarLoop]: Abstraction has has 968 places, 1250 transitions, 33193 flow [2021-03-24 13:33:52,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:52,313 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:52,313 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:52,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-24 13:33:52,313 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:52,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:52,313 INFO L82 PathProgramCache]: Analyzing trace with hash 209890202, now seen corresponding path program 128 times [2021-03-24 13:33:52,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:52,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638593833] [2021-03-24 13:33:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:52,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:52,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:52,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:52,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:52,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:52,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:52,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:52,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:52,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:52,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:52,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:52,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:52,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:52,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:52,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:52,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:52,381 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:52,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:52,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:52,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638593833] [2021-03-24 13:33:52,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:52,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:33:52,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990489812] [2021-03-24 13:33:52,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:33:52,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:52,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:33:52,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:33:52,385 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:52,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 968 places, 1250 transitions, 33193 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:52,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:52,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:52,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:53,462 INFO L129 PetriNetUnfolder]: 746/1612 cut-off events. [2021-03-24 13:33:53,462 INFO L130 PetriNetUnfolder]: For 339532/339532 co-relation queries the response was YES. [2021-03-24 13:33:53,504 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29350 conditions, 1612 events. 746/1612 cut-off events. For 339532/339532 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 11894 event pairs, 10 based on Foata normal form. 1/1613 useless extension candidates. Maximal degree in co-relation 28915. Up to 1352 conditions per place. [2021-03-24 13:33:53,514 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1129 selfloop transitions, 100 changer transitions 34/1267 dead transitions. [2021-03-24 13:33:53,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 976 places, 1267 transitions, 37543 flow [2021-03-24 13:33:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:33:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:33:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:33:53,515 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:33:53,515 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:33:53,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:33:53,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:53,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:33:53,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:53,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:53,516 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:53,516 INFO L185 Difference]: Start difference. First operand has 968 places, 1250 transitions, 33193 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:33:53,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 976 places, 1267 transitions, 37543 flow [2021-03-24 13:33:58,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 965 places, 1267 transitions, 36392 flow, removed 504 selfloop flow, removed 11 redundant places. [2021-03-24 13:33:58,352 INFO L241 Difference]: Finished difference. Result has 972 places, 1224 transitions, 31725 flow [2021-03-24 13:33:58,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32126, PETRI_DIFFERENCE_MINUEND_PLACES=957, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31725, PETRI_PLACES=972, PETRI_TRANSITIONS=1224} [2021-03-24 13:33:58,353 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 941 predicate places. [2021-03-24 13:33:58,353 INFO L480 AbstractCegarLoop]: Abstraction has has 972 places, 1224 transitions, 31725 flow [2021-03-24 13:33:58,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:58,353 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:33:58,353 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:33:58,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-24 13:33:58,354 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:33:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:33:58,354 INFO L82 PathProgramCache]: Analyzing trace with hash 31975526, now seen corresponding path program 129 times [2021-03-24 13:33:58,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:33:58,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249652416] [2021-03-24 13:33:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:33:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:33:58,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:58,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:58,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:58,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:58,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:58,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:58,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:58,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:58,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:58,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:33:58,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:58,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:58,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:58,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:58,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:33:58,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:33:58,398 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:33:58,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:33:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:33:58,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249652416] [2021-03-24 13:33:58,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:33:58,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:33:58,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920201605] [2021-03-24 13:33:58,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:33:58,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:33:58,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:33:58,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:33:58,401 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:33:58,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 1224 transitions, 31725 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:58,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:33:58,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:33:58,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:33:59,409 INFO L129 PetriNetUnfolder]: 740/1596 cut-off events. [2021-03-24 13:33:59,409 INFO L130 PetriNetUnfolder]: For 292429/292429 co-relation queries the response was YES. [2021-03-24 13:33:59,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28418 conditions, 1596 events. 740/1596 cut-off events. For 292429/292429 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 11737 event pairs, 8 based on Foata normal form. 1/1597 useless extension candidates. Maximal degree in co-relation 27981. Up to 1400 conditions per place. [2021-03-24 13:33:59,458 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1180 selfloop transitions, 55 changer transitions 7/1246 dead transitions. [2021-03-24 13:33:59,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 979 places, 1246 transitions, 35493 flow [2021-03-24 13:33:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:33:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:33:59,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:33:59,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:33:59,464 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:33:59,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:33:59,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:33:59,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:33:59,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:59,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:59,465 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:33:59,465 INFO L185 Difference]: Start difference. First operand has 972 places, 1224 transitions, 31725 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:33:59,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 979 places, 1246 transitions, 35493 flow [2021-03-24 13:34:03,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 1246 transitions, 34479 flow, removed 157 selfloop flow, removed 44 redundant places. [2021-03-24 13:34:03,921 INFO L241 Difference]: Finished difference. Result has 940 places, 1230 transitions, 31338 flow [2021-03-24 13:34:03,922 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30771, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31338, PETRI_PLACES=940, PETRI_TRANSITIONS=1230} [2021-03-24 13:34:03,922 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 909 predicate places. [2021-03-24 13:34:03,922 INFO L480 AbstractCegarLoop]: Abstraction has has 940 places, 1230 transitions, 31338 flow [2021-03-24 13:34:03,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:03,922 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:03,922 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:03,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-24 13:34:03,922 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:03,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1678637782, now seen corresponding path program 130 times [2021-03-24 13:34:03,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:03,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843087531] [2021-03-24 13:34:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:03,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:03,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:03,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:03,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:03,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:03,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:03,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:03,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:03,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:03,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:03,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:03,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:03,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:03,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:03,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:03,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:03,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:03,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:03,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843087531] [2021-03-24 13:34:03,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:03,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:34:03,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447896095] [2021-03-24 13:34:03,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:34:03,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:03,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:34:03,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:34:03,987 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:03,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 940 places, 1230 transitions, 31338 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:03,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:03,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:03,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:05,009 INFO L129 PetriNetUnfolder]: 736/1590 cut-off events. [2021-03-24 13:34:05,009 INFO L130 PetriNetUnfolder]: For 262585/262585 co-relation queries the response was YES. [2021-03-24 13:34:05,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27589 conditions, 1590 events. 736/1590 cut-off events. For 262585/262585 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 11712 event pairs, 7 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 27167. Up to 1387 conditions per place. [2021-03-24 13:34:05,056 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1156 selfloop transitions, 78 changer transitions 8/1246 dead transitions. [2021-03-24 13:34:05,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 948 places, 1246 transitions, 35392 flow [2021-03-24 13:34:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:34:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:34:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:34:05,057 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:34:05,057 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:34:05,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:34:05,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:05,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:34:05,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:05,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:05,058 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:05,058 INFO L185 Difference]: Start difference. First operand has 940 places, 1230 transitions, 31338 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:34:05,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 948 places, 1246 transitions, 35392 flow [2021-03-24 13:34:09,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 943 places, 1246 transitions, 35028 flow, removed 157 selfloop flow, removed 5 redundant places. [2021-03-24 13:34:09,183 INFO L241 Difference]: Finished difference. Result has 949 places, 1229 transitions, 31358 flow [2021-03-24 13:34:09,183 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30978, PETRI_DIFFERENCE_MINUEND_PLACES=935, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31358, PETRI_PLACES=949, PETRI_TRANSITIONS=1229} [2021-03-24 13:34:09,183 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 918 predicate places. [2021-03-24 13:34:09,183 INFO L480 AbstractCegarLoop]: Abstraction has has 949 places, 1229 transitions, 31358 flow [2021-03-24 13:34:09,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:09,184 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:09,184 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:09,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-24 13:34:09,184 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:09,184 INFO L82 PathProgramCache]: Analyzing trace with hash 382222020, now seen corresponding path program 131 times [2021-03-24 13:34:09,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:09,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557980120] [2021-03-24 13:34:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:09,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:09,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:09,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:09,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:09,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:09,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:09,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:09,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:09,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:09,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:09,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:09,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:34:09,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:09,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:09,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:09,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:09,245 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:09,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:09,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557980120] [2021-03-24 13:34:09,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:09,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:34:09,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739720783] [2021-03-24 13:34:09,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:34:09,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:09,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:34:09,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:34:09,249 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:09,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 1229 transitions, 31358 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:09,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:09,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:09,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:10,257 INFO L129 PetriNetUnfolder]: 734/1582 cut-off events. [2021-03-24 13:34:10,257 INFO L130 PetriNetUnfolder]: For 259894/259894 co-relation queries the response was YES. [2021-03-24 13:34:10,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27249 conditions, 1582 events. 734/1582 cut-off events. For 259894/259894 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 11655 event pairs, 2 based on Foata normal form. 1/1583 useless extension candidates. Maximal degree in co-relation 26822. Up to 1435 conditions per place. [2021-03-24 13:34:10,302 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1188 selfloop transitions, 46 changer transitions 4/1242 dead transitions. [2021-03-24 13:34:10,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 957 places, 1242 transitions, 35140 flow [2021-03-24 13:34:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:34:10,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:34:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:34:10,303 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:34:10,303 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:34:10,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:34:10,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:10,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:34:10,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:10,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:10,304 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:10,304 INFO L185 Difference]: Start difference. First operand has 949 places, 1229 transitions, 31358 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:34:10,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 957 places, 1242 transitions, 35140 flow [2021-03-24 13:34:14,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 1242 transitions, 34759 flow, removed 92 selfloop flow, removed 12 redundant places. [2021-03-24 13:34:14,264 INFO L241 Difference]: Finished difference. Result has 950 places, 1231 transitions, 31562 flow [2021-03-24 13:34:14,265 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30991, PETRI_DIFFERENCE_MINUEND_PLACES=937, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31562, PETRI_PLACES=950, PETRI_TRANSITIONS=1231} [2021-03-24 13:34:14,265 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 919 predicate places. [2021-03-24 13:34:14,265 INFO L480 AbstractCegarLoop]: Abstraction has has 950 places, 1231 transitions, 31562 flow [2021-03-24 13:34:14,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:14,265 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:14,265 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:14,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-24 13:34:14,265 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:14,266 INFO L82 PathProgramCache]: Analyzing trace with hash 10969318, now seen corresponding path program 132 times [2021-03-24 13:34:14,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:14,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532011459] [2021-03-24 13:34:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:14,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:14,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:14,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:14,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:14,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:14,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:14,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:14,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:14,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:14,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:14,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:14,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:14,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:14,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:14,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:14,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:14,330 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:14,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:14,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532011459] [2021-03-24 13:34:14,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:14,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:34:14,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471722388] [2021-03-24 13:34:14,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:34:14,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:14,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:34:14,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:34:14,333 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:14,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 950 places, 1231 transitions, 31562 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:14,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:14,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:14,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:15,453 INFO L129 PetriNetUnfolder]: 743/1613 cut-off events. [2021-03-24 13:34:15,453 INFO L130 PetriNetUnfolder]: For 300357/300357 co-relation queries the response was YES. [2021-03-24 13:34:15,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28461 conditions, 1613 events. 743/1613 cut-off events. For 300357/300357 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 11975 event pairs, 12 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 28033. Up to 1311 conditions per place. [2021-03-24 13:34:15,491 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1113 selfloop transitions, 125 changer transitions 10/1252 dead transitions. [2021-03-24 13:34:15,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 958 places, 1252 transitions, 35492 flow [2021-03-24 13:34:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:34:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:34:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:34:15,492 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:34:15,492 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:34:15,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:34:15,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:15,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:34:15,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:15,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:15,493 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:15,493 INFO L185 Difference]: Start difference. First operand has 950 places, 1231 transitions, 31562 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:34:15,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 958 places, 1252 transitions, 35492 flow [2021-03-24 13:34:19,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 950 places, 1252 transitions, 35057 flow, removed 169 selfloop flow, removed 8 redundant places. [2021-03-24 13:34:19,807 INFO L241 Difference]: Finished difference. Result has 956 places, 1232 transitions, 31942 flow [2021-03-24 13:34:19,808 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31129, PETRI_DIFFERENCE_MINUEND_PLACES=942, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31942, PETRI_PLACES=956, PETRI_TRANSITIONS=1232} [2021-03-24 13:34:19,808 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 925 predicate places. [2021-03-24 13:34:19,808 INFO L480 AbstractCegarLoop]: Abstraction has has 956 places, 1232 transitions, 31942 flow [2021-03-24 13:34:19,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:19,808 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:19,808 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:19,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-24 13:34:19,808 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:19,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:19,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2100565726, now seen corresponding path program 133 times [2021-03-24 13:34:19,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:19,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607246532] [2021-03-24 13:34:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:19,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:19,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:19,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:19,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:19,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:19,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:19,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:19,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:19,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:19,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:19,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:19,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:34:19,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:19,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:19,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:19,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:19,873 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:19,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:19,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607246532] [2021-03-24 13:34:19,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:19,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:34:19,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089187812] [2021-03-24 13:34:19,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:34:19,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:19,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:34:19,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:34:19,877 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:19,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 956 places, 1232 transitions, 31942 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:19,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:19,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:19,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:20,916 INFO L129 PetriNetUnfolder]: 734/1589 cut-off events. [2021-03-24 13:34:20,916 INFO L130 PetriNetUnfolder]: For 265052/265052 co-relation queries the response was YES. [2021-03-24 13:34:20,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27695 conditions, 1589 events. 734/1589 cut-off events. For 265052/265052 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 11755 event pairs, 5 based on Foata normal form. 1/1590 useless extension candidates. Maximal degree in co-relation 27264. Up to 1399 conditions per place. [2021-03-24 13:34:20,964 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1172 selfloop transitions, 64 changer transitions 8/1248 dead transitions. [2021-03-24 13:34:20,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 1248 transitions, 35496 flow [2021-03-24 13:34:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:34:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:34:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:34:20,965 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:34:20,965 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:34:20,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:34:20,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:20,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:34:20,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:20,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:20,966 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:20,966 INFO L185 Difference]: Start difference. First operand has 956 places, 1232 transitions, 31942 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:34:20,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 1248 transitions, 35496 flow [2021-03-24 13:34:25,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 956 places, 1248 transitions, 34999 flow, removed 163 selfloop flow, removed 8 redundant places. [2021-03-24 13:34:25,627 INFO L241 Difference]: Finished difference. Result has 960 places, 1231 transitions, 31813 flow [2021-03-24 13:34:25,627 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31445, PETRI_DIFFERENCE_MINUEND_PLACES=948, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31813, PETRI_PLACES=960, PETRI_TRANSITIONS=1231} [2021-03-24 13:34:25,628 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 929 predicate places. [2021-03-24 13:34:25,628 INFO L480 AbstractCegarLoop]: Abstraction has has 960 places, 1231 transitions, 31813 flow [2021-03-24 13:34:25,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:25,628 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:25,628 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:25,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-24 13:34:25,628 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:25,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1699643990, now seen corresponding path program 134 times [2021-03-24 13:34:25,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:25,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353390580] [2021-03-24 13:34:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:25,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:25,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:25,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:25,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:25,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:25,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:25,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:25,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:25,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:25,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:25,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:25,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:25,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:25,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:25,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:25,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:25,701 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:25,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:25,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353390580] [2021-03-24 13:34:25,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:25,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:34:25,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564066515] [2021-03-24 13:34:25,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:34:25,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:25,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:34:25,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:34:25,704 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:25,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 1231 transitions, 31813 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:25,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:25,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:25,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:26,799 INFO L129 PetriNetUnfolder]: 733/1593 cut-off events. [2021-03-24 13:34:26,799 INFO L130 PetriNetUnfolder]: For 271500/271500 co-relation queries the response was YES. [2021-03-24 13:34:26,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27903 conditions, 1593 events. 733/1593 cut-off events. For 271500/271500 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 11817 event pairs, 11 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 27470. Up to 1287 conditions per place. [2021-03-24 13:34:26,851 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1078 selfloop transitions, 153 changer transitions 14/1249 dead transitions. [2021-03-24 13:34:26,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 969 places, 1249 transitions, 36091 flow [2021-03-24 13:34:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:34:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:34:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:34:26,852 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:34:26,852 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:34:26,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:34:26,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:26,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:34:26,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:26,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:26,853 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:26,853 INFO L185 Difference]: Start difference. First operand has 960 places, 1231 transitions, 31813 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:34:26,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 969 places, 1249 transitions, 36091 flow [2021-03-24 13:34:31,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 962 places, 1249 transitions, 35805 flow, removed 95 selfloop flow, removed 7 redundant places. [2021-03-24 13:34:31,236 INFO L241 Difference]: Finished difference. Result has 969 places, 1225 transitions, 31932 flow [2021-03-24 13:34:31,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31543, PETRI_DIFFERENCE_MINUEND_PLACES=953, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1078, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31932, PETRI_PLACES=969, PETRI_TRANSITIONS=1225} [2021-03-24 13:34:31,236 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 938 predicate places. [2021-03-24 13:34:31,236 INFO L480 AbstractCegarLoop]: Abstraction has has 969 places, 1225 transitions, 31932 flow [2021-03-24 13:34:31,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:31,236 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:31,237 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:31,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-24 13:34:31,237 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:31,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:31,237 INFO L82 PathProgramCache]: Analyzing trace with hash -473084634, now seen corresponding path program 135 times [2021-03-24 13:34:31,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:31,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470338269] [2021-03-24 13:34:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:31,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:31,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:31,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:31,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:31,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:31,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:31,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:31,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:31,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:31,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:31,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:31,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:34:31,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:31,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:31,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:31,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:31,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:31,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:31,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470338269] [2021-03-24 13:34:31,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:31,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:34:31,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969686077] [2021-03-24 13:34:31,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:34:31,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:31,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:34:31,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:34:31,293 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:31,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 969 places, 1225 transitions, 31932 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:31,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:31,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:31,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:32,367 INFO L129 PetriNetUnfolder]: 728/1576 cut-off events. [2021-03-24 13:34:32,367 INFO L130 PetriNetUnfolder]: For 248846/248846 co-relation queries the response was YES. [2021-03-24 13:34:32,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27610 conditions, 1576 events. 728/1576 cut-off events. For 248846/248846 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 11638 event pairs, 4 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 27174. Up to 1398 conditions per place. [2021-03-24 13:34:32,426 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1138 selfloop transitions, 85 changer transitions 9/1236 dead transitions. [2021-03-24 13:34:32,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 977 places, 1236 transitions, 35256 flow [2021-03-24 13:34:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:34:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:34:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:34:32,428 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:34:32,428 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:34:32,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:34:32,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:32,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:34:32,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:32,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:32,429 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:32,429 INFO L185 Difference]: Start difference. First operand has 969 places, 1225 transitions, 31932 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:34:32,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 977 places, 1236 transitions, 35256 flow [2021-03-24 13:34:36,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 957 places, 1236 transitions, 34628 flow, removed 27 selfloop flow, removed 20 redundant places. [2021-03-24 13:34:36,525 INFO L241 Difference]: Finished difference. Result has 961 places, 1221 transitions, 31533 flow [2021-03-24 13:34:36,526 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31320, PETRI_DIFFERENCE_MINUEND_PLACES=949, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31533, PETRI_PLACES=961, PETRI_TRANSITIONS=1221} [2021-03-24 13:34:36,526 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 930 predicate places. [2021-03-24 13:34:36,526 INFO L480 AbstractCegarLoop]: Abstraction has has 961 places, 1221 transitions, 31533 flow [2021-03-24 13:34:36,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:36,526 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:36,526 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:36,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-24 13:34:36,527 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:36,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2090263146, now seen corresponding path program 136 times [2021-03-24 13:34:36,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:36,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513578323] [2021-03-24 13:34:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:36,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:36,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:36,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:36,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:36,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:36,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:36,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:36,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:36,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:36,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:36,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:36,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:36,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:36,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:36,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:36,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:36,590 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:36,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:36,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513578323] [2021-03-24 13:34:36,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:36,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:34:36,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190172731] [2021-03-24 13:34:36,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:34:36,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:36,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:34:36,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:34:36,593 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:36,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 961 places, 1221 transitions, 31533 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:36,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:36,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:36,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:37,631 INFO L129 PetriNetUnfolder]: 727/1575 cut-off events. [2021-03-24 13:34:37,632 INFO L130 PetriNetUnfolder]: For 259064/259064 co-relation queries the response was YES. [2021-03-24 13:34:37,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27665 conditions, 1575 events. 727/1575 cut-off events. For 259064/259064 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 11594 event pairs, 10 based on Foata normal form. 1/1576 useless extension candidates. Maximal degree in co-relation 27232. Up to 1353 conditions per place. [2021-03-24 13:34:37,680 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1115 selfloop transitions, 103 changer transitions 16/1238 dead transitions. [2021-03-24 13:34:37,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 969 places, 1238 transitions, 35835 flow [2021-03-24 13:34:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:34:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:34:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:34:37,696 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:34:37,696 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:34:37,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:34:37,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:37,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:34:37,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:37,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:37,697 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:37,697 INFO L185 Difference]: Start difference. First operand has 961 places, 1221 transitions, 31533 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:34:37,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 969 places, 1238 transitions, 35835 flow [2021-03-24 13:34:41,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 958 places, 1238 transitions, 35091 flow, removed 274 selfloop flow, removed 11 redundant places. [2021-03-24 13:34:41,984 INFO L241 Difference]: Finished difference. Result has 965 places, 1214 transitions, 31136 flow [2021-03-24 13:34:41,985 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30793, PETRI_DIFFERENCE_MINUEND_PLACES=950, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31136, PETRI_PLACES=965, PETRI_TRANSITIONS=1214} [2021-03-24 13:34:41,985 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 934 predicate places. [2021-03-24 13:34:41,985 INFO L480 AbstractCegarLoop]: Abstraction has has 965 places, 1214 transitions, 31136 flow [2021-03-24 13:34:41,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:41,985 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:41,985 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:41,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-24 13:34:41,985 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:41,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:41,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1128189184, now seen corresponding path program 137 times [2021-03-24 13:34:41,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:41,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424114134] [2021-03-24 13:34:41,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:41,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:41,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:41,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:41,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:42,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:42,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:42,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:42,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:42,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:42,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:42,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:42,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:34:42,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:42,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:42,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:42,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:42,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:42,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:42,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424114134] [2021-03-24 13:34:42,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:42,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:34:42,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822387345] [2021-03-24 13:34:42,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:34:42,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:42,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:34:42,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:34:42,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:42,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 965 places, 1214 transitions, 31136 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:42,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:42,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:42,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:43,333 INFO L129 PetriNetUnfolder]: 722/1569 cut-off events. [2021-03-24 13:34:43,333 INFO L130 PetriNetUnfolder]: For 290028/290028 co-relation queries the response was YES. [2021-03-24 13:34:43,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27939 conditions, 1569 events. 722/1569 cut-off events. For 290028/290028 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 11627 event pairs, 12 based on Foata normal form. 1/1570 useless extension candidates. Maximal degree in co-relation 27501. Up to 1365 conditions per place. [2021-03-24 13:34:43,389 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1129 selfloop transitions, 90 changer transitions 11/1234 dead transitions. [2021-03-24 13:34:43,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 1234 transitions, 36238 flow [2021-03-24 13:34:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:34:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:34:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:34:43,390 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:34:43,391 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:34:43,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:34:43,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:43,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:34:43,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:43,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:43,392 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:43,392 INFO L185 Difference]: Start difference. First operand has 965 places, 1214 transitions, 31136 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:34:43,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 974 places, 1234 transitions, 36238 flow [2021-03-24 13:34:47,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 961 places, 1234 transitions, 35674 flow, removed 144 selfloop flow, removed 13 redundant places. [2021-03-24 13:34:47,787 INFO L241 Difference]: Finished difference. Result has 967 places, 1215 transitions, 31840 flow [2021-03-24 13:34:47,788 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30626, PETRI_DIFFERENCE_MINUEND_PLACES=952, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31840, PETRI_PLACES=967, PETRI_TRANSITIONS=1215} [2021-03-24 13:34:47,788 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 936 predicate places. [2021-03-24 13:34:47,788 INFO L480 AbstractCegarLoop]: Abstraction has has 967 places, 1215 transitions, 31840 flow [2021-03-24 13:34:47,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:47,788 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:47,788 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:47,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-24 13:34:47,788 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:47,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:47,788 INFO L82 PathProgramCache]: Analyzing trace with hash -576776004, now seen corresponding path program 138 times [2021-03-24 13:34:47,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:47,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006854408] [2021-03-24 13:34:47,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:47,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:47,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:47,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:47,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:47,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:47,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:47,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:47,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:34:47,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:47,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:47,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:47,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:47,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:47,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:47,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:47,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:47,841 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:47,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:47,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006854408] [2021-03-24 13:34:47,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:47,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:34:47,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063804130] [2021-03-24 13:34:47,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:34:47,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:47,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:34:47,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:34:47,844 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:47,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 967 places, 1215 transitions, 31840 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:47,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:47,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:47,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:48,927 INFO L129 PetriNetUnfolder]: 733/1593 cut-off events. [2021-03-24 13:34:48,927 INFO L130 PetriNetUnfolder]: For 355417/355417 co-relation queries the response was YES. [2021-03-24 13:34:48,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29293 conditions, 1593 events. 733/1593 cut-off events. For 355417/355417 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 11884 event pairs, 6 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 28854. Up to 1387 conditions per place. [2021-03-24 13:34:48,986 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1160 selfloop transitions, 72 changer transitions 4/1240 dead transitions. [2021-03-24 13:34:48,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 975 places, 1240 transitions, 36166 flow [2021-03-24 13:34:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:34:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:34:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:34:48,987 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:34:48,987 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:34:48,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:34:48,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:48,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:34:48,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:48,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:48,988 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:48,988 INFO L185 Difference]: Start difference. First operand has 967 places, 1215 transitions, 31840 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:34:48,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 975 places, 1240 transitions, 36166 flow [2021-03-24 13:34:53,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 966 places, 1240 transitions, 35088 flow, removed 468 selfloop flow, removed 9 redundant places. [2021-03-24 13:34:53,498 INFO L241 Difference]: Finished difference. Result has 972 places, 1226 transitions, 32091 flow [2021-03-24 13:34:53,500 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=30774, PETRI_DIFFERENCE_MINUEND_PLACES=958, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32091, PETRI_PLACES=972, PETRI_TRANSITIONS=1226} [2021-03-24 13:34:53,500 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 941 predicate places. [2021-03-24 13:34:53,500 INFO L480 AbstractCegarLoop]: Abstraction has has 972 places, 1226 transitions, 32091 flow [2021-03-24 13:34:53,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:53,500 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:53,500 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:53,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-24 13:34:53,500 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:53,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1484083798, now seen corresponding path program 139 times [2021-03-24 13:34:53,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:53,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095754211] [2021-03-24 13:34:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:53,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:53,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:53,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:53,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:53,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:53,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:53,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:53,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:34:53,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:53,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:53,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:53,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:53,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:53,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:53,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:53,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:53,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:53,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:53,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095754211] [2021-03-24 13:34:53,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:53,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:34:53,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637377186] [2021-03-24 13:34:53,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:34:53,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:53,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:34:53,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:34:53,569 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:53,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 1226 transitions, 32091 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:53,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:53,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:53,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:34:54,698 INFO L129 PetriNetUnfolder]: 737/1613 cut-off events. [2021-03-24 13:34:54,698 INFO L130 PetriNetUnfolder]: For 366165/366165 co-relation queries the response was YES. [2021-03-24 13:34:54,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29773 conditions, 1613 events. 737/1613 cut-off events. For 366165/366165 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 12153 event pairs, 5 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 29330. Up to 1373 conditions per place. [2021-03-24 13:34:54,750 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1145 selfloop transitions, 93 changer transitions 6/1248 dead transitions. [2021-03-24 13:34:54,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 980 places, 1248 transitions, 36293 flow [2021-03-24 13:34:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:34:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:34:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:34:54,752 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:34:54,752 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:34:54,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:34:54,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:34:54,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:34:54,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:54,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:54,753 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:54,753 INFO L185 Difference]: Start difference. First operand has 972 places, 1226 transitions, 32091 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:34:54,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 980 places, 1248 transitions, 36293 flow [2021-03-24 13:34:59,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 976 places, 1248 transitions, 35469 flow, removed 386 selfloop flow, removed 4 redundant places. [2021-03-24 13:34:59,632 INFO L241 Difference]: Finished difference. Result has 981 places, 1233 transitions, 32563 flow [2021-03-24 13:34:59,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31269, PETRI_DIFFERENCE_MINUEND_PLACES=968, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32563, PETRI_PLACES=981, PETRI_TRANSITIONS=1233} [2021-03-24 13:34:59,633 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 950 predicate places. [2021-03-24 13:34:59,633 INFO L480 AbstractCegarLoop]: Abstraction has has 981 places, 1233 transitions, 32563 flow [2021-03-24 13:34:59,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:59,633 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:34:59,633 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:34:59,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-24 13:34:59,633 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:34:59,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:34:59,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1649861384, now seen corresponding path program 140 times [2021-03-24 13:34:59,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:34:59,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225367247] [2021-03-24 13:34:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:34:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:34:59,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:59,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:59,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:59,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:59,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:59,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:59,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:59,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:34:59,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:59,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:34:59,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:59,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:59,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:59,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:59,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:34:59,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:34:59,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:34:59,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:34:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:34:59,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225367247] [2021-03-24 13:34:59,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:34:59,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:34:59,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999737123] [2021-03-24 13:34:59,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:34:59,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:34:59,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:34:59,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:34:59,693 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:34:59,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 981 places, 1233 transitions, 32563 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:34:59,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:34:59,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:34:59,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:00,789 INFO L129 PetriNetUnfolder]: 732/1615 cut-off events. [2021-03-24 13:35:00,789 INFO L130 PetriNetUnfolder]: For 326204/326204 co-relation queries the response was YES. [2021-03-24 13:35:00,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28851 conditions, 1615 events. 732/1615 cut-off events. For 326204/326204 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 12210 event pairs, 4 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 28404. Up to 1392 conditions per place. [2021-03-24 13:35:00,865 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1172 selfloop transitions, 67 changer transitions 9/1252 dead transitions. [2021-03-24 13:35:00,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 989 places, 1252 transitions, 36383 flow [2021-03-24 13:35:00,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:35:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:35:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:35:00,866 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:35:00,866 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:35:00,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:35:00,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:00,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:35:00,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:00,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:00,867 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:00,867 INFO L185 Difference]: Start difference. First operand has 981 places, 1233 transitions, 32563 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:35:00,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 989 places, 1252 transitions, 36383 flow [2021-03-24 13:35:05,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 982 places, 1252 transitions, 35485 flow, removed 400 selfloop flow, removed 7 redundant places. [2021-03-24 13:35:05,780 INFO L241 Difference]: Finished difference. Result has 987 places, 1233 transitions, 32105 flow [2021-03-24 13:35:05,781 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31669, PETRI_DIFFERENCE_MINUEND_PLACES=974, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32105, PETRI_PLACES=987, PETRI_TRANSITIONS=1233} [2021-03-24 13:35:05,781 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 956 predicate places. [2021-03-24 13:35:05,781 INFO L480 AbstractCegarLoop]: Abstraction has has 987 places, 1233 transitions, 32105 flow [2021-03-24 13:35:05,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:05,781 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:35:05,781 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:35:05,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-24 13:35:05,781 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:35:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:35:05,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1027480346, now seen corresponding path program 141 times [2021-03-24 13:35:05,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:35:05,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721063778] [2021-03-24 13:35:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:35:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:35:05,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:05,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:05,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:05,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:05,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:05,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:05,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:05,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:05,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:05,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:05,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:05,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:35:05,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:05,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:05,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:05,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:05,847 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:35:05,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:35:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:35:05,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721063778] [2021-03-24 13:35:05,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:35:05,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:35:05,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056111938] [2021-03-24 13:35:05,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:35:05,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:35:05,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:35:05,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:35:05,850 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:35:05,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 987 places, 1233 transitions, 32105 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:05,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:35:05,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:35:05,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:07,005 INFO L129 PetriNetUnfolder]: 736/1623 cut-off events. [2021-03-24 13:35:07,005 INFO L130 PetriNetUnfolder]: For 313186/313186 co-relation queries the response was YES. [2021-03-24 13:35:07,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28712 conditions, 1623 events. 736/1623 cut-off events. For 313186/313186 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 12266 event pairs, 3 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 28262. Up to 1432 conditions per place. [2021-03-24 13:35:07,060 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1179 selfloop transitions, 70 changer transitions 3/1256 dead transitions. [2021-03-24 13:35:07,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 995 places, 1256 transitions, 36681 flow [2021-03-24 13:35:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:35:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:35:07,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:35:07,061 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:35:07,061 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:35:07,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:35:07,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:07,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:35:07,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:07,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:07,062 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:07,062 INFO L185 Difference]: Start difference. First operand has 987 places, 1233 transitions, 32105 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:35:07,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 995 places, 1256 transitions, 36681 flow [2021-03-24 13:35:11,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 983 places, 1256 transitions, 36242 flow, removed 167 selfloop flow, removed 12 redundant places. [2021-03-24 13:35:11,981 INFO L241 Difference]: Finished difference. Result has 986 places, 1245 transitions, 33658 flow [2021-03-24 13:35:11,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=31670, PETRI_DIFFERENCE_MINUEND_PLACES=975, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=33658, PETRI_PLACES=986, PETRI_TRANSITIONS=1245} [2021-03-24 13:35:11,982 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 955 predicate places. [2021-03-24 13:35:11,982 INFO L480 AbstractCegarLoop]: Abstraction has has 986 places, 1245 transitions, 33658 flow [2021-03-24 13:35:11,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:11,982 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:35:11,982 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:35:11,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-24 13:35:11,982 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:35:11,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:35:11,983 INFO L82 PathProgramCache]: Analyzing trace with hash -569045606, now seen corresponding path program 142 times [2021-03-24 13:35:11,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:35:11,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038508929] [2021-03-24 13:35:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:35:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:35:11,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:11,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:11,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:11,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:11,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:11,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:12,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:12,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:35:12,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:12,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:12,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:12,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:12,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:12,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:12,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:12,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:12,036 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:35:12,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:35:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:35:12,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038508929] [2021-03-24 13:35:12,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:35:12,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:35:12,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119421679] [2021-03-24 13:35:12,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:35:12,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:35:12,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:35:12,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:35:12,039 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:35:12,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 986 places, 1245 transitions, 33658 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:12,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:35:12,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:35:12,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:13,223 INFO L129 PetriNetUnfolder]: 735/1627 cut-off events. [2021-03-24 13:35:13,223 INFO L130 PetriNetUnfolder]: For 309549/309549 co-relation queries the response was YES. [2021-03-24 13:35:13,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28952 conditions, 1627 events. 735/1627 cut-off events. For 309549/309549 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 12326 event pairs, 4 based on Foata normal form. 1/1628 useless extension candidates. Maximal degree in co-relation 28501. Up to 1422 conditions per place. [2021-03-24 13:35:13,276 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1189 selfloop transitions, 66 changer transitions 5/1264 dead transitions. [2021-03-24 13:35:13,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 994 places, 1264 transitions, 37787 flow [2021-03-24 13:35:13,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:35:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:35:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:35:13,277 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:35:13,277 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:35:13,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:35:13,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:13,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:35:13,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:13,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:13,278 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:13,278 INFO L185 Difference]: Start difference. First operand has 986 places, 1245 transitions, 33658 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:35:13,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 994 places, 1264 transitions, 37787 flow [2021-03-24 13:35:18,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 993 places, 1264 transitions, 36479 flow, removed 650 selfloop flow, removed 1 redundant places. [2021-03-24 13:35:18,080 INFO L241 Difference]: Finished difference. Result has 999 places, 1249 transitions, 33188 flow [2021-03-24 13:35:18,081 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32350, PETRI_DIFFERENCE_MINUEND_PLACES=985, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=33188, PETRI_PLACES=999, PETRI_TRANSITIONS=1249} [2021-03-24 13:35:18,081 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 968 predicate places. [2021-03-24 13:35:18,081 INFO L480 AbstractCegarLoop]: Abstraction has has 999 places, 1249 transitions, 33188 flow [2021-03-24 13:35:18,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:18,081 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:35:18,081 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:35:18,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-24 13:35:18,081 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:35:18,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:35:18,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2007577984, now seen corresponding path program 143 times [2021-03-24 13:35:18,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:35:18,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331099326] [2021-03-24 13:35:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:35:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:35:18,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:18,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:18,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:18,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:18,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:18,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:18,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:18,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:35:18,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:18,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:18,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:18,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:18,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:18,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:18,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:18,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:18,153 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:35:18,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:35:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:35:18,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331099326] [2021-03-24 13:35:18,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:35:18,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:35:18,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610284481] [2021-03-24 13:35:18,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:35:18,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:35:18,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:35:18,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:35:18,156 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:35:18,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 999 places, 1249 transitions, 33188 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:18,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:35:18,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:35:18,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:19,325 INFO L129 PetriNetUnfolder]: 734/1629 cut-off events. [2021-03-24 13:35:19,325 INFO L130 PetriNetUnfolder]: For 268289/268289 co-relation queries the response was YES. [2021-03-24 13:35:19,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27976 conditions, 1629 events. 734/1629 cut-off events. For 268289/268289 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 12365 event pairs, 3 based on Foata normal form. 1/1630 useless extension candidates. Maximal degree in co-relation 27519. Up to 1404 conditions per place. [2021-03-24 13:35:19,379 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1159 selfloop transitions, 95 changer transitions 6/1264 dead transitions. [2021-03-24 13:35:19,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1008 places, 1264 transitions, 36651 flow [2021-03-24 13:35:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:35:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:35:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:35:19,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:35:19,380 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:35:19,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:35:19,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:19,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:35:19,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:19,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:19,380 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:19,381 INFO L185 Difference]: Start difference. First operand has 999 places, 1249 transitions, 33188 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:35:19,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1008 places, 1264 transitions, 36651 flow [2021-03-24 13:35:24,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1003 places, 1264 transitions, 36116 flow, removed 222 selfloop flow, removed 5 redundant places. [2021-03-24 13:35:24,259 INFO L241 Difference]: Finished difference. Result has 1008 places, 1248 transitions, 33127 flow [2021-03-24 13:35:24,260 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32657, PETRI_DIFFERENCE_MINUEND_PLACES=994, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=33127, PETRI_PLACES=1008, PETRI_TRANSITIONS=1248} [2021-03-24 13:35:24,260 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 977 predicate places. [2021-03-24 13:35:24,260 INFO L480 AbstractCegarLoop]: Abstraction has has 1008 places, 1248 transitions, 33127 flow [2021-03-24 13:35:24,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:24,260 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:35:24,260 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:35:24,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-24 13:35:24,260 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:35:24,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:35:24,260 INFO L82 PathProgramCache]: Analyzing trace with hash 602782094, now seen corresponding path program 144 times [2021-03-24 13:35:24,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:35:24,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048733479] [2021-03-24 13:35:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:35:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:35:24,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:24,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:24,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:24,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:24,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:24,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:24,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:24,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:24,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:24,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:24,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:24,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:35:24,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:24,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:24,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:24,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:24,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:35:24,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:35:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:35:24,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048733479] [2021-03-24 13:35:24,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:35:24,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:35:24,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465512733] [2021-03-24 13:35:24,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:35:24,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:35:24,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:35:24,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:35:24,323 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:35:24,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1008 places, 1248 transitions, 33127 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:24,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:35:24,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:35:24,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:25,519 INFO L129 PetriNetUnfolder]: 737/1641 cut-off events. [2021-03-24 13:35:25,520 INFO L130 PetriNetUnfolder]: For 296681/296681 co-relation queries the response was YES. [2021-03-24 13:35:25,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28782 conditions, 1641 events. 737/1641 cut-off events. For 296681/296681 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 12520 event pairs, 0 based on Foata normal form. 1/1642 useless extension candidates. Maximal degree in co-relation 28322. Up to 1447 conditions per place. [2021-03-24 13:35:25,568 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1172 selfloop transitions, 93 changer transitions 6/1275 dead transitions. [2021-03-24 13:35:25,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1016 places, 1275 transitions, 37932 flow [2021-03-24 13:35:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:35:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:35:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 274 transitions. [2021-03-24 13:35:25,569 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5854700854700855 [2021-03-24 13:35:25,569 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 274 transitions. [2021-03-24 13:35:25,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 274 transitions. [2021-03-24 13:35:25,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:25,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 274 transitions. [2021-03-24 13:35:25,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.444444444444443) internal successors, (274), 9 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:25,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:25,570 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:25,570 INFO L185 Difference]: Start difference. First operand has 1008 places, 1248 transitions, 33127 flow. Second operand 9 states and 274 transitions. [2021-03-24 13:35:25,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1016 places, 1275 transitions, 37932 flow [2021-03-24 13:35:30,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1002 places, 1275 transitions, 37458 flow, removed 121 selfloop flow, removed 14 redundant places. [2021-03-24 13:35:30,388 INFO L241 Difference]: Finished difference. Result has 1006 places, 1263 transitions, 34856 flow [2021-03-24 13:35:30,388 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=32685, PETRI_DIFFERENCE_MINUEND_PLACES=994, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34856, PETRI_PLACES=1006, PETRI_TRANSITIONS=1263} [2021-03-24 13:35:30,388 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 975 predicate places. [2021-03-24 13:35:30,389 INFO L480 AbstractCegarLoop]: Abstraction has has 1006 places, 1263 transitions, 34856 flow [2021-03-24 13:35:30,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:30,389 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:35:30,389 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:35:30,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-24 13:35:30,389 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:35:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:35:30,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1901221026, now seen corresponding path program 145 times [2021-03-24 13:35:30,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:35:30,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364406128] [2021-03-24 13:35:30,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:35:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:35:30,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:30,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:30,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:30,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:30,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:30,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:30,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:30,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:30,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:30,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:30,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:30,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:35:30,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:30,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:30,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:30,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:30,443 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:35:30,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:35:30,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:35:30,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364406128] [2021-03-24 13:35:30,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:35:30,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:35:30,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025738428] [2021-03-24 13:35:30,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:35:30,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:35:30,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:35:30,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:35:30,446 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:35:30,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1006 places, 1263 transitions, 34856 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:30,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:35:30,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:35:30,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:31,728 INFO L129 PetriNetUnfolder]: 743/1650 cut-off events. [2021-03-24 13:35:31,728 INFO L130 PetriNetUnfolder]: For 326572/326572 co-relation queries the response was YES. [2021-03-24 13:35:31,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29760 conditions, 1650 events. 743/1650 cut-off events. For 326572/326572 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 12652 event pairs, 3 based on Foata normal form. 1/1651 useless extension candidates. Maximal degree in co-relation 29302. Up to 1431 conditions per place. [2021-03-24 13:35:31,771 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1201 selfloop transitions, 79 changer transitions 8/1292 dead transitions. [2021-03-24 13:35:31,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1014 places, 1292 transitions, 39485 flow [2021-03-24 13:35:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:35:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:35:31,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:35:31,772 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:35:31,772 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:35:31,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:35:31,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:31,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:35:31,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:31,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:31,772 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:31,772 INFO L185 Difference]: Start difference. First operand has 1006 places, 1263 transitions, 34856 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:35:31,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1014 places, 1292 transitions, 39485 flow [2021-03-24 13:35:37,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1013 places, 1292 transitions, 38227 flow, removed 621 selfloop flow, removed 1 redundant places. [2021-03-24 13:35:37,149 INFO L241 Difference]: Finished difference. Result has 1018 places, 1275 transitions, 35488 flow [2021-03-24 13:35:37,149 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=33598, PETRI_DIFFERENCE_MINUEND_PLACES=1005, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35488, PETRI_PLACES=1018, PETRI_TRANSITIONS=1275} [2021-03-24 13:35:37,149 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 987 predicate places. [2021-03-24 13:35:37,149 INFO L480 AbstractCegarLoop]: Abstraction has has 1018 places, 1275 transitions, 35488 flow [2021-03-24 13:35:37,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:37,150 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:35:37,150 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:35:37,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-24 13:35:37,150 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:35:37,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:35:37,150 INFO L82 PathProgramCache]: Analyzing trace with hash -855327104, now seen corresponding path program 146 times [2021-03-24 13:35:37,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:35:37,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234995346] [2021-03-24 13:35:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:35:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:35:37,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:37,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:37,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:37,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:37,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:37,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:37,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:37,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:37,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:37,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:37,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:37,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:35:37,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:37,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:37,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:37,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:37,217 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:35:37,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:35:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:35:37,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234995346] [2021-03-24 13:35:37,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:35:37,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:35:37,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833773060] [2021-03-24 13:35:37,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:35:37,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:35:37,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:35:37,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:35:37,221 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:35:37,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1018 places, 1275 transitions, 35488 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:37,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:35:37,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:35:37,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:38,628 INFO L129 PetriNetUnfolder]: 743/1656 cut-off events. [2021-03-24 13:35:38,628 INFO L130 PetriNetUnfolder]: For 326757/326757 co-relation queries the response was YES. [2021-03-24 13:35:38,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29988 conditions, 1656 events. 743/1656 cut-off events. For 326757/326757 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 12699 event pairs, 2 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 29524. Up to 1436 conditions per place. [2021-03-24 13:35:38,672 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1194 selfloop transitions, 86 changer transitions 11/1295 dead transitions. [2021-03-24 13:35:38,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1026 places, 1295 transitions, 40532 flow [2021-03-24 13:35:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:35:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:35:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:35:38,673 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:35:38,673 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:35:38,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:35:38,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:38,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:35:38,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:38,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:38,674 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:38,674 INFO L185 Difference]: Start difference. First operand has 1018 places, 1275 transitions, 35488 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:35:38,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1026 places, 1295 transitions, 40532 flow [2021-03-24 13:35:43,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1025 places, 1295 transitions, 39650 flow, removed 434 selfloop flow, removed 1 redundant places. [2021-03-24 13:35:43,827 INFO L241 Difference]: Finished difference. Result has 1031 places, 1276 transitions, 35860 flow [2021-03-24 13:35:43,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34606, PETRI_DIFFERENCE_MINUEND_PLACES=1017, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35860, PETRI_PLACES=1031, PETRI_TRANSITIONS=1276} [2021-03-24 13:35:43,828 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1000 predicate places. [2021-03-24 13:35:43,828 INFO L480 AbstractCegarLoop]: Abstraction has has 1031 places, 1276 transitions, 35860 flow [2021-03-24 13:35:43,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:43,828 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:35:43,828 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:35:43,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-24 13:35:43,828 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:35:43,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:35:43,829 INFO L82 PathProgramCache]: Analyzing trace with hash 456025540, now seen corresponding path program 147 times [2021-03-24 13:35:43,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:35:43,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355747867] [2021-03-24 13:35:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:35:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:35:43,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:43,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:43,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:43,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:43,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:43,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:43,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:43,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:43,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:43,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:43,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:43,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:43,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:43,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:43,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:43,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:43,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:35:43,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:35:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:35:43,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355747867] [2021-03-24 13:35:43,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:35:43,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:35:43,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501570294] [2021-03-24 13:35:43,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:35:43,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:35:43,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:35:43,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:35:43,897 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:35:43,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1031 places, 1276 transitions, 35860 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:43,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:35:43,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:35:43,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:45,153 INFO L129 PetriNetUnfolder]: 746/1677 cut-off events. [2021-03-24 13:35:45,153 INFO L130 PetriNetUnfolder]: For 312094/312094 co-relation queries the response was YES. [2021-03-24 13:35:45,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30056 conditions, 1677 events. 746/1677 cut-off events. For 312094/312094 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 12970 event pairs, 2 based on Foata normal form. 1/1678 useless extension candidates. Maximal degree in co-relation 29585. Up to 1438 conditions per place. [2021-03-24 13:35:45,213 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1188 selfloop transitions, 106 changer transitions 10/1308 dead transitions. [2021-03-24 13:35:45,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1039 places, 1308 transitions, 40895 flow [2021-03-24 13:35:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:35:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:35:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:35:45,214 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:35:45,214 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:35:45,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:35:45,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:45,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:35:45,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:45,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:45,215 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:45,215 INFO L185 Difference]: Start difference. First operand has 1031 places, 1276 transitions, 35860 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:35:45,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1039 places, 1308 transitions, 40895 flow [2021-03-24 13:35:50,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1034 places, 1308 transitions, 39808 flow, removed 509 selfloop flow, removed 5 redundant places. [2021-03-24 13:35:50,021 INFO L241 Difference]: Finished difference. Result has 1041 places, 1290 transitions, 36956 flow [2021-03-24 13:35:50,022 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34785, PETRI_DIFFERENCE_MINUEND_PLACES=1026, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36956, PETRI_PLACES=1041, PETRI_TRANSITIONS=1290} [2021-03-24 13:35:50,022 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1010 predicate places. [2021-03-24 13:35:50,022 INFO L480 AbstractCegarLoop]: Abstraction has has 1041 places, 1290 transitions, 36956 flow [2021-03-24 13:35:50,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:50,022 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:35:50,022 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:35:50,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-24 13:35:50,022 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:35:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:35:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash -246718106, now seen corresponding path program 148 times [2021-03-24 13:35:50,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:35:50,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254170083] [2021-03-24 13:35:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:35:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:35:50,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:50,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:50,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:50,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:50,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:50,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:50,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:50,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:50,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:50,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:50,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:50,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:35:50,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:50,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:50,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:50,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:50,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:35:50,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:35:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:35:50,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254170083] [2021-03-24 13:35:50,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:35:50,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:35:50,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152724389] [2021-03-24 13:35:50,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:35:50,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:35:50,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:35:50,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:35:50,076 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:35:50,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1041 places, 1290 transitions, 36956 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:50,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:35:50,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:35:50,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:51,348 INFO L129 PetriNetUnfolder]: 740/1652 cut-off events. [2021-03-24 13:35:51,348 INFO L130 PetriNetUnfolder]: For 301336/301336 co-relation queries the response was YES. [2021-03-24 13:35:51,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29335 conditions, 1652 events. 740/1652 cut-off events. For 301336/301336 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 12720 event pairs, 7 based on Foata normal form. 1/1653 useless extension candidates. Maximal degree in co-relation 28859. Up to 1375 conditions per place. [2021-03-24 13:35:51,405 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1191 selfloop transitions, 101 changer transitions 9/1305 dead transitions. [2021-03-24 13:35:51,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1049 places, 1305 transitions, 40760 flow [2021-03-24 13:35:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:35:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:35:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:35:51,406 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:35:51,406 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:35:51,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:35:51,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:51,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:35:51,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:51,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:51,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:51,406 INFO L185 Difference]: Start difference. First operand has 1041 places, 1290 transitions, 36956 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:35:51,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1049 places, 1305 transitions, 40760 flow [2021-03-24 13:35:56,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1044 places, 1305 transitions, 39658 flow, removed 520 selfloop flow, removed 5 redundant places. [2021-03-24 13:35:56,925 INFO L241 Difference]: Finished difference. Result has 1049 places, 1286 transitions, 36094 flow [2021-03-24 13:35:56,926 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35858, PETRI_DIFFERENCE_MINUEND_PLACES=1036, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36094, PETRI_PLACES=1049, PETRI_TRANSITIONS=1286} [2021-03-24 13:35:56,926 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1018 predicate places. [2021-03-24 13:35:56,926 INFO L480 AbstractCegarLoop]: Abstraction has has 1049 places, 1286 transitions, 36094 flow [2021-03-24 13:35:56,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:56,926 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:35:56,926 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:35:56,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-24 13:35:56,927 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:35:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:35:56,927 INFO L82 PathProgramCache]: Analyzing trace with hash 590154522, now seen corresponding path program 149 times [2021-03-24 13:35:56,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:35:56,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400676871] [2021-03-24 13:35:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:35:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:35:56,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:56,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:56,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:56,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:56,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:56,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:56,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:56,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:56,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:56,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:56,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:56,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:35:56,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:56,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:35:56,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:35:56,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:35:57,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:35:57,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:35:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:35:57,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400676871] [2021-03-24 13:35:57,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:35:57,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:35:57,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039304902] [2021-03-24 13:35:57,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:35:57,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:35:57,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:35:57,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:35:57,009 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:35:57,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1049 places, 1286 transitions, 36094 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:57,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:35:57,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:35:57,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:35:58,260 INFO L129 PetriNetUnfolder]: 738/1646 cut-off events. [2021-03-24 13:35:58,261 INFO L130 PetriNetUnfolder]: For 275937/275937 co-relation queries the response was YES. [2021-03-24 13:35:58,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29033 conditions, 1646 events. 738/1646 cut-off events. For 275937/275937 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 12676 event pairs, 7 based on Foata normal form. 1/1647 useless extension candidates. Maximal degree in co-relation 28554. Up to 1360 conditions per place. [2021-03-24 13:35:58,318 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1164 selfloop transitions, 124 changer transitions 9/1301 dead transitions. [2021-03-24 13:35:58,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1058 places, 1301 transitions, 39904 flow [2021-03-24 13:35:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:35:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:35:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:35:58,319 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:35:58,319 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:35:58,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:35:58,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:35:58,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:35:58,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:58,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:58,320 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:35:58,320 INFO L185 Difference]: Start difference. First operand has 1049 places, 1286 transitions, 36094 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:35:58,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1058 places, 1301 transitions, 39904 flow [2021-03-24 13:36:03,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1045 places, 1301 transitions, 39545 flow, removed 15 selfloop flow, removed 13 redundant places. [2021-03-24 13:36:03,296 INFO L241 Difference]: Finished difference. Result has 1050 places, 1282 transitions, 36033 flow [2021-03-24 13:36:03,296 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35753, PETRI_DIFFERENCE_MINUEND_PLACES=1036, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36033, PETRI_PLACES=1050, PETRI_TRANSITIONS=1282} [2021-03-24 13:36:03,297 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1019 predicate places. [2021-03-24 13:36:03,297 INFO L480 AbstractCegarLoop]: Abstraction has has 1050 places, 1282 transitions, 36033 flow [2021-03-24 13:36:03,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:03,297 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:36:03,297 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:36:03,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-24 13:36:03,297 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:36:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:36:03,297 INFO L82 PathProgramCache]: Analyzing trace with hash 494853074, now seen corresponding path program 150 times [2021-03-24 13:36:03,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:36:03,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551079867] [2021-03-24 13:36:03,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:36:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:36:03,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:03,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:03,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:03,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:03,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:03,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:03,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:03,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:03,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:03,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:03,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:03,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:36:03,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:03,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:03,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:03,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:03,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:36:03,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:36:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:36:03,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551079867] [2021-03-24 13:36:03,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:36:03,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:36:03,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282008346] [2021-03-24 13:36:03,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:36:03,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:36:03,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:36:03,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:36:03,363 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:36:03,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1050 places, 1282 transitions, 36033 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:03,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:36:03,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:36:03,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:36:04,638 INFO L129 PetriNetUnfolder]: 736/1645 cut-off events. [2021-03-24 13:36:04,638 INFO L130 PetriNetUnfolder]: For 267029/267029 co-relation queries the response was YES. [2021-03-24 13:36:04,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28961 conditions, 1645 events. 736/1645 cut-off events. For 267029/267029 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 12691 event pairs, 2 based on Foata normal form. 1/1646 useless extension candidates. Maximal degree in co-relation 28482. Up to 1398 conditions per place. [2021-03-24 13:36:04,698 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1153 selfloop transitions, 124 changer transitions 14/1295 dead transitions. [2021-03-24 13:36:04,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1059 places, 1295 transitions, 39751 flow [2021-03-24 13:36:04,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:36:04,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:36:04,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:36:04,699 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:36:04,700 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:36:04,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:36:04,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:36:04,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:36:04,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:04,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:04,700 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:04,700 INFO L185 Difference]: Start difference. First operand has 1050 places, 1282 transitions, 36033 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:36:04,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1059 places, 1295 transitions, 39751 flow [2021-03-24 13:36:09,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1044 places, 1295 transitions, 39308 flow, removed 27 selfloop flow, removed 15 redundant places. [2021-03-24 13:36:09,883 INFO L241 Difference]: Finished difference. Result has 1049 places, 1273 transitions, 35757 flow [2021-03-24 13:36:09,883 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35610, PETRI_DIFFERENCE_MINUEND_PLACES=1035, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35757, PETRI_PLACES=1049, PETRI_TRANSITIONS=1273} [2021-03-24 13:36:09,884 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1018 predicate places. [2021-03-24 13:36:09,884 INFO L480 AbstractCegarLoop]: Abstraction has has 1049 places, 1273 transitions, 35757 flow [2021-03-24 13:36:09,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:09,884 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:36:09,884 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:36:09,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-24 13:36:09,884 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:36:09,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:36:09,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1888389558, now seen corresponding path program 151 times [2021-03-24 13:36:09,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:36:09,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523120096] [2021-03-24 13:36:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:36:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:36:09,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:09,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:09,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:09,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:09,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:09,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:09,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:09,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:09,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:09,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:09,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:09,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:09,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:09,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:09,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:09,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:09,934 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:36:09,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:36:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:36:09,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523120096] [2021-03-24 13:36:09,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:36:09,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:36:09,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404972534] [2021-03-24 13:36:09,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:36:09,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:36:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:36:09,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:36:09,937 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:36:09,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1049 places, 1273 transitions, 35757 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:09,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:36:09,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:36:09,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:36:11,100 INFO L129 PetriNetUnfolder]: 732/1630 cut-off events. [2021-03-24 13:36:11,101 INFO L130 PetriNetUnfolder]: For 282357/282357 co-relation queries the response was YES. [2021-03-24 13:36:11,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28891 conditions, 1630 events. 732/1630 cut-off events. For 282357/282357 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 12529 event pairs, 4 based on Foata normal form. 1/1631 useless extension candidates. Maximal degree in co-relation 28414. Up to 1408 conditions per place. [2021-03-24 13:36:11,158 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1207 selfloop transitions, 67 changer transitions 11/1289 dead transitions. [2021-03-24 13:36:11,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1056 places, 1289 transitions, 39945 flow [2021-03-24 13:36:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:36:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:36:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2021-03-24 13:36:11,159 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2021-03-24 13:36:11,159 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 248 transitions. [2021-03-24 13:36:11,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 248 transitions. [2021-03-24 13:36:11,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:36:11,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 248 transitions. [2021-03-24 13:36:11,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 31.0) internal successors, (248), 8 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:11,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:11,160 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:11,160 INFO L185 Difference]: Start difference. First operand has 1049 places, 1273 transitions, 35757 flow. Second operand 8 states and 248 transitions. [2021-03-24 13:36:11,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1056 places, 1289 transitions, 39945 flow [2021-03-24 13:36:16,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1038 places, 1289 transitions, 39478 flow, removed 30 selfloop flow, removed 18 redundant places. [2021-03-24 13:36:16,217 INFO L241 Difference]: Finished difference. Result has 1044 places, 1269 transitions, 35630 flow [2021-03-24 13:36:16,218 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35316, PETRI_DIFFERENCE_MINUEND_PLACES=1031, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=35630, PETRI_PLACES=1044, PETRI_TRANSITIONS=1269} [2021-03-24 13:36:16,218 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1013 predicate places. [2021-03-24 13:36:16,218 INFO L480 AbstractCegarLoop]: Abstraction has has 1044 places, 1269 transitions, 35630 flow [2021-03-24 13:36:16,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:16,218 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:36:16,218 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:36:16,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-24 13:36:16,218 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:36:16,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:36:16,218 INFO L82 PathProgramCache]: Analyzing trace with hash -575100988, now seen corresponding path program 152 times [2021-03-24 13:36:16,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:36:16,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386834973] [2021-03-24 13:36:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:36:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:36:16,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:16,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:16,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:16,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:16,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:16,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:16,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:16,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:16,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:16,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:16,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:16,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:16,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:16,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:16,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:16,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:16,271 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:36:16,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:36:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:36:16,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386834973] [2021-03-24 13:36:16,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:36:16,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:36:16,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760858597] [2021-03-24 13:36:16,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:36:16,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:36:16,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:36:16,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:36:16,274 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:36:16,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1044 places, 1269 transitions, 35630 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:16,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:36:16,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:36:16,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:36:17,467 INFO L129 PetriNetUnfolder]: 729/1625 cut-off events. [2021-03-24 13:36:17,467 INFO L130 PetriNetUnfolder]: For 282287/282287 co-relation queries the response was YES. [2021-03-24 13:36:17,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28872 conditions, 1625 events. 729/1625 cut-off events. For 282287/282287 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 12488 event pairs, 8 based on Foata normal form. 1/1626 useless extension candidates. Maximal degree in co-relation 28393. Up to 1348 conditions per place. [2021-03-24 13:36:17,524 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1163 selfloop transitions, 107 changer transitions 12/1286 dead transitions. [2021-03-24 13:36:17,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1052 places, 1286 transitions, 39820 flow [2021-03-24 13:36:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:36:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:36:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:36:17,525 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:36:17,525 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:36:17,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:36:17,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:36:17,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:36:17,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:17,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:17,526 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:17,526 INFO L185 Difference]: Start difference. First operand has 1044 places, 1269 transitions, 35630 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:36:17,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1052 places, 1286 transitions, 39820 flow [2021-03-24 13:36:22,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1045 places, 1286 transitions, 39546 flow, removed 81 selfloop flow, removed 7 redundant places. [2021-03-24 13:36:22,435 INFO L241 Difference]: Finished difference. Result has 1051 places, 1264 transitions, 35797 flow [2021-03-24 13:36:22,435 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35358, PETRI_DIFFERENCE_MINUEND_PLACES=1037, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35797, PETRI_PLACES=1051, PETRI_TRANSITIONS=1264} [2021-03-24 13:36:22,436 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1020 predicate places. [2021-03-24 13:36:22,436 INFO L480 AbstractCegarLoop]: Abstraction has has 1051 places, 1264 transitions, 35797 flow [2021-03-24 13:36:22,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:22,436 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:36:22,436 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:36:22,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-03-24 13:36:22,436 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:36:22,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:36:22,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1709806564, now seen corresponding path program 153 times [2021-03-24 13:36:22,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:36:22,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223913796] [2021-03-24 13:36:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:36:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:36:22,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:22,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:22,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:22,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:22,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:22,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:22,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:22,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:22,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:22,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:22,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:22,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:22,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:22,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:22,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:22,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:22,490 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:36:22,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:36:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:36:22,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223913796] [2021-03-24 13:36:22,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:36:22,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:36:22,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350182731] [2021-03-24 13:36:22,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:36:22,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:36:22,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:36:22,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:36:22,493 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:36:22,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1051 places, 1264 transitions, 35797 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:22,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:36:22,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:36:22,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:36:23,698 INFO L129 PetriNetUnfolder]: 726/1622 cut-off events. [2021-03-24 13:36:23,699 INFO L130 PetriNetUnfolder]: For 282598/282598 co-relation queries the response was YES. [2021-03-24 13:36:23,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29097 conditions, 1622 events. 726/1622 cut-off events. For 282598/282598 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 12474 event pairs, 2 based on Foata normal form. 1/1623 useless extension candidates. Maximal degree in co-relation 28614. Up to 1421 conditions per place. [2021-03-24 13:36:23,756 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1179 selfloop transitions, 87 changer transitions 8/1278 dead transitions. [2021-03-24 13:36:23,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1059 places, 1278 transitions, 40017 flow [2021-03-24 13:36:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:36:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:36:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:36:23,757 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:36:23,757 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:36:23,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:36:23,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:36:23,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:36:23,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:23,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:23,757 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:23,757 INFO L185 Difference]: Start difference. First operand has 1051 places, 1264 transitions, 35797 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:36:23,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1059 places, 1278 transitions, 40017 flow [2021-03-24 13:36:29,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1048 places, 1278 transitions, 39544 flow, removed 94 selfloop flow, removed 11 redundant places. [2021-03-24 13:36:29,405 INFO L241 Difference]: Finished difference. Result has 1054 places, 1263 transitions, 35813 flow [2021-03-24 13:36:29,406 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35338, PETRI_DIFFERENCE_MINUEND_PLACES=1040, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35813, PETRI_PLACES=1054, PETRI_TRANSITIONS=1263} [2021-03-24 13:36:29,406 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1023 predicate places. [2021-03-24 13:36:29,406 INFO L480 AbstractCegarLoop]: Abstraction has has 1054 places, 1263 transitions, 35813 flow [2021-03-24 13:36:29,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:29,406 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:36:29,406 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:36:29,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-03-24 13:36:29,406 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:36:29,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:36:29,406 INFO L82 PathProgramCache]: Analyzing trace with hash 934492604, now seen corresponding path program 154 times [2021-03-24 13:36:29,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:36:29,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949131709] [2021-03-24 13:36:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:36:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:36:29,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:29,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:29,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:29,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:29,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:29,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:29,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:29,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:36:29,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:29,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:29,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:29,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:29,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:29,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:29,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:29,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:29,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:36:29,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:36:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:36:29,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949131709] [2021-03-24 13:36:29,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:36:29,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:36:29,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027424465] [2021-03-24 13:36:29,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:36:29,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:36:29,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:36:29,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:36:29,476 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:36:29,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1054 places, 1263 transitions, 35813 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:29,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:36:29,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:36:29,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:36:30,726 INFO L129 PetriNetUnfolder]: 725/1624 cut-off events. [2021-03-24 13:36:30,727 INFO L130 PetriNetUnfolder]: For 295921/295921 co-relation queries the response was YES. [2021-03-24 13:36:30,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29133 conditions, 1624 events. 725/1624 cut-off events. For 295921/295921 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 12485 event pairs, 2 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 28647. Up to 1389 conditions per place. [2021-03-24 13:36:30,781 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1176 selfloop transitions, 92 changer transitions 8/1280 dead transitions. [2021-03-24 13:36:30,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1063 places, 1280 transitions, 40155 flow [2021-03-24 13:36:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:36:30,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:36:30,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:36:30,782 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:36:30,782 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:36:30,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:36:30,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:36:30,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:36:30,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:30,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:30,783 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:30,783 INFO L185 Difference]: Start difference. First operand has 1054 places, 1263 transitions, 35813 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:36:30,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1063 places, 1280 transitions, 40155 flow [2021-03-24 13:36:35,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1048 places, 1280 transitions, 39635 flow, removed 110 selfloop flow, removed 15 redundant places. [2021-03-24 13:36:35,769 INFO L241 Difference]: Finished difference. Result has 1054 places, 1262 transitions, 35792 flow [2021-03-24 13:36:35,770 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35313, PETRI_DIFFERENCE_MINUEND_PLACES=1039, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35792, PETRI_PLACES=1054, PETRI_TRANSITIONS=1262} [2021-03-24 13:36:35,770 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1023 predicate places. [2021-03-24 13:36:35,770 INFO L480 AbstractCegarLoop]: Abstraction has has 1054 places, 1262 transitions, 35792 flow [2021-03-24 13:36:35,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:35,770 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:36:35,770 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:36:35,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-03-24 13:36:35,770 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:36:35,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:36:35,770 INFO L82 PathProgramCache]: Analyzing trace with hash 793768156, now seen corresponding path program 155 times [2021-03-24 13:36:35,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:36:35,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900880083] [2021-03-24 13:36:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:36:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:36:35,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:35,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:35,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:35,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:35,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:35,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:35,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:35,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:36:35,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:35,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:35,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:35,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:36:35,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:35,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:35,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:35,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:35,826 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:36:35,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:36:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:36:35,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900880083] [2021-03-24 13:36:35,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:36:35,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:36:35,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234919011] [2021-03-24 13:36:35,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:36:35,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:36:35,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:36:35,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:36:35,829 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:36:35,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1054 places, 1262 transitions, 35792 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:35,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:36:35,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:36:35,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:36:36,995 INFO L129 PetriNetUnfolder]: 722/1614 cut-off events. [2021-03-24 13:36:36,995 INFO L130 PetriNetUnfolder]: For 279146/279146 co-relation queries the response was YES. [2021-03-24 13:36:37,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28705 conditions, 1614 events. 722/1614 cut-off events. For 279146/279146 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 12419 event pairs, 3 based on Foata normal form. 1/1615 useless extension candidates. Maximal degree in co-relation 28219. Up to 1407 conditions per place. [2021-03-24 13:36:37,054 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1208 selfloop transitions, 60 changer transitions 6/1278 dead transitions. [2021-03-24 13:36:37,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1062 places, 1278 transitions, 39504 flow [2021-03-24 13:36:37,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:36:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:36:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:36:37,055 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:36:37,055 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:36:37,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:36:37,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:36:37,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:36:37,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:37,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:37,055 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:37,055 INFO L185 Difference]: Start difference. First operand has 1054 places, 1262 transitions, 35792 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:36:37,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1062 places, 1278 transitions, 39504 flow [2021-03-24 13:36:41,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1048 places, 1278 transitions, 39075 flow, removed 100 selfloop flow, removed 14 redundant places. [2021-03-24 13:36:41,990 INFO L241 Difference]: Finished difference. Result has 1052 places, 1262 transitions, 35828 flow [2021-03-24 13:36:41,990 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35371, PETRI_DIFFERENCE_MINUEND_PLACES=1040, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35828, PETRI_PLACES=1052, PETRI_TRANSITIONS=1262} [2021-03-24 13:36:41,990 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1021 predicate places. [2021-03-24 13:36:41,990 INFO L480 AbstractCegarLoop]: Abstraction has has 1052 places, 1262 transitions, 35828 flow [2021-03-24 13:36:41,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:41,991 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:36:41,991 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:36:41,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-03-24 13:36:41,991 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:36:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:36:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1667210542, now seen corresponding path program 156 times [2021-03-24 13:36:41,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:36:41,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903867265] [2021-03-24 13:36:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:36:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:36:41,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:41,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:41,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:41,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:42,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:42,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:42,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:42,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:42,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:42,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:42,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:42,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:36:42,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:42,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:42,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:42,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:42,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:36:42,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:36:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:36:42,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903867265] [2021-03-24 13:36:42,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:36:42,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:36:42,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550688462] [2021-03-24 13:36:42,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:36:42,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:36:42,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:36:42,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:36:42,056 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:36:42,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1052 places, 1262 transitions, 35828 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:42,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:36:42,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:36:42,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:36:43,275 INFO L129 PetriNetUnfolder]: 722/1618 cut-off events. [2021-03-24 13:36:43,276 INFO L130 PetriNetUnfolder]: For 288545/288545 co-relation queries the response was YES. [2021-03-24 13:36:43,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28977 conditions, 1618 events. 722/1618 cut-off events. For 288545/288545 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 12406 event pairs, 1 based on Foata normal form. 1/1619 useless extension candidates. Maximal degree in co-relation 28492. Up to 1398 conditions per place. [2021-03-24 13:36:43,327 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1145 selfloop transitions, 119 changer transitions 8/1276 dead transitions. [2021-03-24 13:36:43,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1061 places, 1276 transitions, 40052 flow [2021-03-24 13:36:43,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:36:43,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:36:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:36:43,328 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:36:43,328 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:36:43,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:36:43,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:36:43,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:36:43,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:43,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:43,329 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:43,329 INFO L185 Difference]: Start difference. First operand has 1052 places, 1262 transitions, 35828 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:36:43,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1061 places, 1276 transitions, 40052 flow [2021-03-24 13:36:48,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1052 places, 1276 transitions, 39770 flow, removed 91 selfloop flow, removed 9 redundant places. [2021-03-24 13:36:48,675 INFO L241 Difference]: Finished difference. Result has 1058 places, 1261 transitions, 36116 flow [2021-03-24 13:36:48,676 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35548, PETRI_DIFFERENCE_MINUEND_PLACES=1043, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36116, PETRI_PLACES=1058, PETRI_TRANSITIONS=1261} [2021-03-24 13:36:48,676 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1027 predicate places. [2021-03-24 13:36:48,676 INFO L480 AbstractCegarLoop]: Abstraction has has 1058 places, 1261 transitions, 36116 flow [2021-03-24 13:36:48,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:48,676 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:36:48,676 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:36:48,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-03-24 13:36:48,676 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:36:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:36:48,676 INFO L82 PathProgramCache]: Analyzing trace with hash -482930858, now seen corresponding path program 157 times [2021-03-24 13:36:48,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:36:48,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118918453] [2021-03-24 13:36:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:36:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:36:48,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:48,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:48,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:48,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:48,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:48,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:48,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:48,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:48,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:48,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:48,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:48,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:36:48,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:48,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:48,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:48,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:48,739 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:36:48,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:36:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:36:48,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118918453] [2021-03-24 13:36:48,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:36:48,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:36:48,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581372003] [2021-03-24 13:36:48,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:36:48,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:36:48,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:36:48,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:36:48,741 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:36:48,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1058 places, 1261 transitions, 36116 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:48,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:36:48,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:36:48,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:36:50,005 INFO L129 PetriNetUnfolder]: 720/1614 cut-off events. [2021-03-24 13:36:50,006 INFO L130 PetriNetUnfolder]: For 286436/286436 co-relation queries the response was YES. [2021-03-24 13:36:50,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28947 conditions, 1614 events. 720/1614 cut-off events. For 286436/286436 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 12441 event pairs, 4 based on Foata normal form. 1/1615 useless extension candidates. Maximal degree in co-relation 28458. Up to 1384 conditions per place. [2021-03-24 13:36:50,053 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1173 selfloop transitions, 89 changer transitions 9/1275 dead transitions. [2021-03-24 13:36:50,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1067 places, 1275 transitions, 39906 flow [2021-03-24 13:36:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:36:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:36:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:36:50,055 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:36:50,055 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:36:50,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:36:50,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:36:50,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:36:50,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:50,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:50,055 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:50,055 INFO L185 Difference]: Start difference. First operand has 1058 places, 1261 transitions, 36116 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:36:50,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1067 places, 1275 transitions, 39906 flow [2021-03-24 13:36:55,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1055 places, 1275 transitions, 39382 flow, removed 124 selfloop flow, removed 12 redundant places. [2021-03-24 13:36:55,453 INFO L241 Difference]: Finished difference. Result has 1060 places, 1257 transitions, 35790 flow [2021-03-24 13:36:55,454 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35614, PETRI_DIFFERENCE_MINUEND_PLACES=1046, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35790, PETRI_PLACES=1060, PETRI_TRANSITIONS=1257} [2021-03-24 13:36:55,454 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1029 predicate places. [2021-03-24 13:36:55,454 INFO L480 AbstractCegarLoop]: Abstraction has has 1060 places, 1257 transitions, 35790 flow [2021-03-24 13:36:55,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:55,454 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:36:55,454 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:36:55,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-03-24 13:36:55,454 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:36:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:36:55,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1290325986, now seen corresponding path program 158 times [2021-03-24 13:36:55,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:36:55,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281701100] [2021-03-24 13:36:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:36:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:36:55,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:55,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:55,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:55,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:55,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:55,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:55,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:55,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:55,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:55,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:36:55,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:55,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:55,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:55,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:55,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:36:55,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:36:55,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:36:55,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:36:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:36:55,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281701100] [2021-03-24 13:36:55,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:36:55,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:36:55,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904226719] [2021-03-24 13:36:55,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:36:55,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:36:55,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:36:55,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:36:55,524 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:36:55,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1060 places, 1257 transitions, 35790 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:55,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:36:55,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:36:55,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:36:56,828 INFO L129 PetriNetUnfolder]: 718/1613 cut-off events. [2021-03-24 13:36:56,828 INFO L130 PetriNetUnfolder]: For 288271/288271 co-relation queries the response was YES. [2021-03-24 13:36:56,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28907 conditions, 1613 events. 718/1613 cut-off events. For 288271/288271 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 12398 event pairs, 4 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 28418. Up to 1367 conditions per place. [2021-03-24 13:36:56,872 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1154 selfloop transitions, 98 changer transitions 16/1272 dead transitions. [2021-03-24 13:36:56,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1068 places, 1272 transitions, 39800 flow [2021-03-24 13:36:56,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:36:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:36:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:36:56,873 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:36:56,873 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:36:56,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:36:56,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:36:56,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:36:56,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:56,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:56,874 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:36:56,874 INFO L185 Difference]: Start difference. First operand has 1060 places, 1257 transitions, 35790 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:36:56,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1068 places, 1272 transitions, 39800 flow [2021-03-24 13:37:02,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1053 places, 1272 transitions, 39447 flow, removed 31 selfloop flow, removed 15 redundant places. [2021-03-24 13:37:02,217 INFO L241 Difference]: Finished difference. Result has 1059 places, 1247 transitions, 35549 flow [2021-03-24 13:37:02,218 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35461, PETRI_DIFFERENCE_MINUEND_PLACES=1045, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35549, PETRI_PLACES=1059, PETRI_TRANSITIONS=1247} [2021-03-24 13:37:02,218 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1028 predicate places. [2021-03-24 13:37:02,218 INFO L480 AbstractCegarLoop]: Abstraction has has 1059 places, 1247 transitions, 35549 flow [2021-03-24 13:37:02,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:02,218 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:02,218 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:37:02,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-03-24 13:37:02,218 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:37:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:02,219 INFO L82 PathProgramCache]: Analyzing trace with hash -63682008, now seen corresponding path program 159 times [2021-03-24 13:37:02,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:02,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818171616] [2021-03-24 13:37:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:02,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:02,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:02,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:02,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:02,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:02,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:02,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:02,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:02,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:02,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:02,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:02,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:02,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:02,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:02,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:02,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:02,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:37:02,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:37:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:37:02,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818171616] [2021-03-24 13:37:02,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:02,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:37:02,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584414849] [2021-03-24 13:37:02,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:37:02,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:02,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:37:02,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:37:02,298 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:37:02,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1059 places, 1247 transitions, 35549 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:02,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:02,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:37:02,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:37:03,540 INFO L129 PetriNetUnfolder]: 710/1593 cut-off events. [2021-03-24 13:37:03,540 INFO L130 PetriNetUnfolder]: For 274238/274238 co-relation queries the response was YES. [2021-03-24 13:37:03,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28588 conditions, 1593 events. 710/1593 cut-off events. For 274238/274238 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 12231 event pairs, 5 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 28101. Up to 1345 conditions per place. [2021-03-24 13:37:03,691 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1118 selfloop transitions, 129 changer transitions 10/1261 dead transitions. [2021-03-24 13:37:03,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1068 places, 1261 transitions, 39303 flow [2021-03-24 13:37:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:37:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:37:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:37:03,692 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:37:03,692 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:37:03,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:37:03,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:37:03,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:37:03,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:03,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:03,696 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:03,696 INFO L185 Difference]: Start difference. First operand has 1059 places, 1247 transitions, 35549 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:37:03,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1068 places, 1261 transitions, 39303 flow [2021-03-24 13:37:09,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 1261 transitions, 38939 flow, removed 3 selfloop flow, removed 18 redundant places. [2021-03-24 13:37:09,154 INFO L241 Difference]: Finished difference. Result has 1055 places, 1242 transitions, 35431 flow [2021-03-24 13:37:09,155 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35187, PETRI_DIFFERENCE_MINUEND_PLACES=1041, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35431, PETRI_PLACES=1055, PETRI_TRANSITIONS=1242} [2021-03-24 13:37:09,155 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1024 predicate places. [2021-03-24 13:37:09,155 INFO L480 AbstractCegarLoop]: Abstraction has has 1055 places, 1242 transitions, 35431 flow [2021-03-24 13:37:09,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:09,155 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:09,155 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:37:09,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-03-24 13:37:09,155 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:37:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:09,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1299614890, now seen corresponding path program 160 times [2021-03-24 13:37:09,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:09,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949910616] [2021-03-24 13:37:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:09,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:09,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:09,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:09,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:09,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:09,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:09,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:09,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:09,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:09,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:09,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:09,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:09,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:09,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:09,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:09,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:09,228 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:37:09,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:37:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:37:09,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949910616] [2021-03-24 13:37:09,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:09,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:37:09,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54188110] [2021-03-24 13:37:09,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:37:09,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:09,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:37:09,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:37:09,231 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:37:09,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1055 places, 1242 transitions, 35431 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:09,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:09,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:37:09,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:37:10,433 INFO L129 PetriNetUnfolder]: 709/1593 cut-off events. [2021-03-24 13:37:10,434 INFO L130 PetriNetUnfolder]: For 282343/282343 co-relation queries the response was YES. [2021-03-24 13:37:10,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28686 conditions, 1593 events. 709/1593 cut-off events. For 282343/282343 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 12220 event pairs, 0 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 28160. Up to 1428 conditions per place. [2021-03-24 13:37:10,488 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1203 selfloop transitions, 45 changer transitions 4/1256 dead transitions. [2021-03-24 13:37:10,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1064 places, 1256 transitions, 39449 flow [2021-03-24 13:37:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:37:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:37:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:37:10,489 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:37:10,489 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:37:10,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:37:10,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:37:10,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:37:10,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:10,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:10,490 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:10,490 INFO L185 Difference]: Start difference. First operand has 1055 places, 1242 transitions, 35431 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:37:10,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1064 places, 1256 transitions, 39449 flow [2021-03-24 13:37:15,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1040 places, 1256 transitions, 38740 flow, removed 38 selfloop flow, removed 24 redundant places. [2021-03-24 13:37:15,841 INFO L241 Difference]: Finished difference. Result has 1045 places, 1244 transitions, 35381 flow [2021-03-24 13:37:15,842 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34754, PETRI_DIFFERENCE_MINUEND_PLACES=1031, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35381, PETRI_PLACES=1045, PETRI_TRANSITIONS=1244} [2021-03-24 13:37:15,842 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1014 predicate places. [2021-03-24 13:37:15,842 INFO L480 AbstractCegarLoop]: Abstraction has has 1045 places, 1244 transitions, 35381 flow [2021-03-24 13:37:15,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:15,842 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:15,842 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:37:15,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-03-24 13:37:15,842 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:37:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:15,843 INFO L82 PathProgramCache]: Analyzing trace with hash -165883330, now seen corresponding path program 161 times [2021-03-24 13:37:15,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:15,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775856697] [2021-03-24 13:37:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:15,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:15,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:15,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:15,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:15,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:15,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:15,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:15,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:15,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:15,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:15,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:15,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:15,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:15,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:15,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:15,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:15,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:37:15,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:37:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:37:15,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775856697] [2021-03-24 13:37:15,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:15,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:37:15,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828163194] [2021-03-24 13:37:15,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:37:15,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:15,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:37:15,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:37:15,932 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:37:15,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1045 places, 1244 transitions, 35381 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:15,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:15,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:37:15,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:37:17,171 INFO L129 PetriNetUnfolder]: 708/1593 cut-off events. [2021-03-24 13:37:17,172 INFO L130 PetriNetUnfolder]: For 282460/282460 co-relation queries the response was YES. [2021-03-24 13:37:17,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28353 conditions, 1593 events. 708/1593 cut-off events. For 282460/282460 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 12230 event pairs, 7 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 27834. Up to 1313 conditions per place. [2021-03-24 13:37:17,228 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1123 selfloop transitions, 119 changer transitions 13/1259 dead transitions. [2021-03-24 13:37:17,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1054 places, 1259 transitions, 39143 flow [2021-03-24 13:37:17,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:37:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:37:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:37:17,229 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:37:17,229 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:37:17,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:37:17,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:37:17,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:37:17,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:17,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:17,229 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:17,230 INFO L185 Difference]: Start difference. First operand has 1045 places, 1244 transitions, 35381 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:37:17,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1054 places, 1259 transitions, 39143 flow [2021-03-24 13:37:22,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1044 places, 1259 transitions, 38676 flow, removed 185 selfloop flow, removed 10 redundant places. [2021-03-24 13:37:22,518 INFO L241 Difference]: Finished difference. Result has 1049 places, 1236 transitions, 34995 flow [2021-03-24 13:37:22,519 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34918, PETRI_DIFFERENCE_MINUEND_PLACES=1035, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=34995, PETRI_PLACES=1049, PETRI_TRANSITIONS=1236} [2021-03-24 13:37:22,519 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1018 predicate places. [2021-03-24 13:37:22,519 INFO L480 AbstractCegarLoop]: Abstraction has has 1049 places, 1236 transitions, 34995 flow [2021-03-24 13:37:22,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:22,519 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:22,519 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:37:22,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-03-24 13:37:22,519 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:37:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash 418728816, now seen corresponding path program 162 times [2021-03-24 13:37:22,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:22,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749724734] [2021-03-24 13:37:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:22,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:22,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:22,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:22,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:22,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:22,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:22,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:22,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:22,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:22,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:22,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:22,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:22,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:22,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:22,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:22,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:22,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:37:22,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:37:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:37:22,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749724734] [2021-03-24 13:37:22,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:22,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:37:22,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954660062] [2021-03-24 13:37:22,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:37:22,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:22,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:37:22,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:37:22,586 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:37:22,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1049 places, 1236 transitions, 34995 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:22,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:22,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:37:22,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:37:23,798 INFO L129 PetriNetUnfolder]: 703/1581 cut-off events. [2021-03-24 13:37:23,798 INFO L130 PetriNetUnfolder]: For 268397/268397 co-relation queries the response was YES. [2021-03-24 13:37:23,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28103 conditions, 1581 events. 703/1581 cut-off events. For 268397/268397 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 12115 event pairs, 4 based on Foata normal form. 1/1582 useless extension candidates. Maximal degree in co-relation 27582. Up to 1358 conditions per place. [2021-03-24 13:37:23,852 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1156 selfloop transitions, 86 changer transitions 5/1251 dead transitions. [2021-03-24 13:37:23,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1058 places, 1251 transitions, 38635 flow [2021-03-24 13:37:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:37:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:37:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:37:23,853 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:37:23,853 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:37:23,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:37:23,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:37:23,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:37:23,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:23,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:23,853 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:23,853 INFO L185 Difference]: Start difference. First operand has 1049 places, 1236 transitions, 34995 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:37:23,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1058 places, 1251 transitions, 38635 flow [2021-03-24 13:37:28,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1031 places, 1251 transitions, 38063 flow, removed 25 selfloop flow, removed 27 redundant places. [2021-03-24 13:37:29,013 INFO L241 Difference]: Finished difference. Result has 1035 places, 1236 transitions, 34972 flow [2021-03-24 13:37:29,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34443, PETRI_DIFFERENCE_MINUEND_PLACES=1022, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=34972, PETRI_PLACES=1035, PETRI_TRANSITIONS=1236} [2021-03-24 13:37:29,013 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1004 predicate places. [2021-03-24 13:37:29,013 INFO L480 AbstractCegarLoop]: Abstraction has has 1035 places, 1236 transitions, 34972 flow [2021-03-24 13:37:29,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:29,013 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:29,013 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:37:29,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-03-24 13:37:29,014 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:37:29,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:29,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1295452368, now seen corresponding path program 163 times [2021-03-24 13:37:29,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:29,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356504608] [2021-03-24 13:37:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:29,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:29,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:29,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:29,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:29,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:29,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:29,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:29,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:29,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:29,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:29,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:29,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:29,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:29,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:29,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:29,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:29,085 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:37:29,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:37:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:37:29,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356504608] [2021-03-24 13:37:29,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:29,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:37:29,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545973481] [2021-03-24 13:37:29,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:37:29,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:29,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:37:29,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:37:29,088 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:37:29,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1035 places, 1236 transitions, 34972 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:29,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:29,088 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:37:29,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:37:30,284 INFO L129 PetriNetUnfolder]: 709/1590 cut-off events. [2021-03-24 13:37:30,285 INFO L130 PetriNetUnfolder]: For 276509/276509 co-relation queries the response was YES. [2021-03-24 13:37:30,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28184 conditions, 1590 events. 709/1590 cut-off events. For 276509/276509 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 12172 event pairs, 1 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 27669. Up to 1428 conditions per place. [2021-03-24 13:37:30,340 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1208 selfloop transitions, 47 changer transitions 3/1262 dead transitions. [2021-03-24 13:37:30,340 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1043 places, 1262 transitions, 38985 flow [2021-03-24 13:37:30,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:37:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:37:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:37:30,341 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:37:30,341 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:37:30,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:37:30,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:37:30,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:37:30,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:30,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:30,341 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:30,341 INFO L185 Difference]: Start difference. First operand has 1035 places, 1236 transitions, 34972 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:37:30,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1043 places, 1262 transitions, 38985 flow [2021-03-24 13:37:35,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1031 places, 1262 transitions, 38615 flow, removed 95 selfloop flow, removed 12 redundant places. [2021-03-24 13:37:35,563 INFO L241 Difference]: Finished difference. Result has 1036 places, 1251 transitions, 35573 flow [2021-03-24 13:37:35,564 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34604, PETRI_DIFFERENCE_MINUEND_PLACES=1023, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=35573, PETRI_PLACES=1036, PETRI_TRANSITIONS=1251} [2021-03-24 13:37:35,564 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1005 predicate places. [2021-03-24 13:37:35,564 INFO L480 AbstractCegarLoop]: Abstraction has has 1036 places, 1251 transitions, 35573 flow [2021-03-24 13:37:35,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:35,564 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:35,564 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:37:35,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-03-24 13:37:35,564 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:37:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:35,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2140045752, now seen corresponding path program 164 times [2021-03-24 13:37:35,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:35,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609915477] [2021-03-24 13:37:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:35,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:35,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:35,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:35,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:35,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:35,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:35,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:35,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:35,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:35,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:35,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:35,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:35,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:35,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:35,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:35,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:35,639 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:37:35,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:37:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:37:35,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609915477] [2021-03-24 13:37:35,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:35,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:37:35,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632468298] [2021-03-24 13:37:35,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:37:35,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:35,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:37:35,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:37:35,641 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:37:35,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1036 places, 1251 transitions, 35573 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:35,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:35,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:37:35,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:37:36,909 INFO L129 PetriNetUnfolder]: 708/1589 cut-off events. [2021-03-24 13:37:36,910 INFO L130 PetriNetUnfolder]: For 276397/276397 co-relation queries the response was YES. [2021-03-24 13:37:36,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28209 conditions, 1589 events. 708/1589 cut-off events. For 276397/276397 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 12267 event pairs, 2 based on Foata normal form. 1/1590 useless extension candidates. Maximal degree in co-relation 27692. Up to 1398 conditions per place. [2021-03-24 13:37:36,968 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1153 selfloop transitions, 98 changer transitions 8/1263 dead transitions. [2021-03-24 13:37:36,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1045 places, 1263 transitions, 39077 flow [2021-03-24 13:37:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:37:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:37:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:37:36,969 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:37:36,969 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:37:36,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:37:36,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:37:36,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:37:36,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:36,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:36,969 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:36,969 INFO L185 Difference]: Start difference. First operand has 1036 places, 1251 transitions, 35573 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:37:36,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1045 places, 1263 transitions, 39077 flow [2021-03-24 13:37:42,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1043 places, 1263 transitions, 38638 flow, removed 207 selfloop flow, removed 2 redundant places. [2021-03-24 13:37:42,078 INFO L241 Difference]: Finished difference. Result has 1047 places, 1248 transitions, 35517 flow [2021-03-24 13:37:42,078 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35138, PETRI_DIFFERENCE_MINUEND_PLACES=1034, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35517, PETRI_PLACES=1047, PETRI_TRANSITIONS=1248} [2021-03-24 13:37:42,078 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1016 predicate places. [2021-03-24 13:37:42,078 INFO L480 AbstractCegarLoop]: Abstraction has has 1047 places, 1248 transitions, 35517 flow [2021-03-24 13:37:42,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:42,078 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:42,078 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:37:42,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-03-24 13:37:42,079 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:37:42,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1502517824, now seen corresponding path program 165 times [2021-03-24 13:37:42,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:42,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013828221] [2021-03-24 13:37:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:42,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:42,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:42,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:42,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:42,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:42,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:42,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:42,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:42,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:42,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:42,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:42,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:42,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:42,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:42,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:42,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:42,142 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:37:42,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:37:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:37:42,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013828221] [2021-03-24 13:37:42,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:42,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:37:42,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389122695] [2021-03-24 13:37:42,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:37:42,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:42,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:37:42,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:37:42,144 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:37:42,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1047 places, 1248 transitions, 35517 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:42,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:42,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:37:42,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:37:43,416 INFO L129 PetriNetUnfolder]: 708/1591 cut-off events. [2021-03-24 13:37:43,416 INFO L130 PetriNetUnfolder]: For 292710/292710 co-relation queries the response was YES. [2021-03-24 13:37:43,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28735 conditions, 1591 events. 708/1591 cut-off events. For 292710/292710 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 12304 event pairs, 7 based on Foata normal form. 1/1592 useless extension candidates. Maximal degree in co-relation 28258. Up to 1338 conditions per place. [2021-03-24 13:37:43,474 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1131 selfloop transitions, 117 changer transitions 14/1266 dead transitions. [2021-03-24 13:37:43,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1054 places, 1266 transitions, 40139 flow [2021-03-24 13:37:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:37:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:37:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:37:43,475 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:37:43,475 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:37:43,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:37:43,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:37:43,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:37:43,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:43,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:43,476 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:43,476 INFO L185 Difference]: Start difference. First operand has 1047 places, 1248 transitions, 35517 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:37:43,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1054 places, 1266 transitions, 40139 flow [2021-03-24 13:37:49,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1040 places, 1266 transitions, 39572 flow, removed 170 selfloop flow, removed 14 redundant places. [2021-03-24 13:37:49,138 INFO L241 Difference]: Finished difference. Result has 1047 places, 1243 transitions, 35406 flow [2021-03-24 13:37:49,139 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34970, PETRI_DIFFERENCE_MINUEND_PLACES=1031, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35406, PETRI_PLACES=1047, PETRI_TRANSITIONS=1243} [2021-03-24 13:37:49,139 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1016 predicate places. [2021-03-24 13:37:49,139 INFO L480 AbstractCegarLoop]: Abstraction has has 1047 places, 1243 transitions, 35406 flow [2021-03-24 13:37:49,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:49,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:49,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:37:49,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-03-24 13:37:49,139 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:37:49,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:49,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1715934506, now seen corresponding path program 166 times [2021-03-24 13:37:49,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:49,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935223138] [2021-03-24 13:37:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:49,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:49,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:49,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:49,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:49,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:49,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:49,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:49,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:49,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:49,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:49,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:49,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:49,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:49,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:49,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:49,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:49,202 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:37:49,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:37:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:37:49,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935223138] [2021-03-24 13:37:49,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:49,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:37:49,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197786256] [2021-03-24 13:37:49,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:37:49,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:49,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:37:49,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:37:49,205 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:37:49,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1047 places, 1243 transitions, 35406 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:49,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:49,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:37:49,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:37:50,411 INFO L129 PetriNetUnfolder]: 702/1585 cut-off events. [2021-03-24 13:37:50,411 INFO L130 PetriNetUnfolder]: For 310027/310027 co-relation queries the response was YES. [2021-03-24 13:37:50,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28986 conditions, 1585 events. 702/1585 cut-off events. For 310027/310027 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 12292 event pairs, 0 based on Foata normal form. 1/1586 useless extension candidates. Maximal degree in co-relation 28465. Up to 1424 conditions per place. [2021-03-24 13:37:50,466 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1210 selfloop transitions, 44 changer transitions 4/1262 dead transitions. [2021-03-24 13:37:50,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1056 places, 1262 transitions, 40638 flow [2021-03-24 13:37:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:37:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:37:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:37:50,467 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:37:50,467 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:37:50,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:37:50,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:37:50,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:37:50,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:50,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:50,468 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:50,468 INFO L185 Difference]: Start difference. First operand has 1047 places, 1243 transitions, 35406 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:37:50,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1056 places, 1262 transitions, 40638 flow [2021-03-24 13:37:55,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1041 places, 1262 transitions, 40087 flow, removed 116 selfloop flow, removed 15 redundant places. [2021-03-24 13:37:55,497 INFO L241 Difference]: Finished difference. Result has 1044 places, 1250 transitions, 36685 flow [2021-03-24 13:37:55,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=34903, PETRI_DIFFERENCE_MINUEND_PLACES=1032, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36685, PETRI_PLACES=1044, PETRI_TRANSITIONS=1250} [2021-03-24 13:37:55,498 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1013 predicate places. [2021-03-24 13:37:55,498 INFO L480 AbstractCegarLoop]: Abstraction has has 1044 places, 1250 transitions, 36685 flow [2021-03-24 13:37:55,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:55,498 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:37:55,498 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:37:55,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-03-24 13:37:55,499 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:37:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:37:55,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1263900746, now seen corresponding path program 167 times [2021-03-24 13:37:55,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:37:55,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346291294] [2021-03-24 13:37:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:37:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:37:55,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:55,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:55,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:55,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:55,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:55,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:55,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:55,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:55,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:55,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:55,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:55,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:37:55,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:55,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:37:55,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:37:55,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:37:55,568 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:37:55,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:37:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:37:55,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346291294] [2021-03-24 13:37:55,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:37:55,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:37:55,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234565951] [2021-03-24 13:37:55,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:37:55,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:37:55,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:37:55,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:37:55,571 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:37:55,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1044 places, 1250 transitions, 36685 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:55,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:37:55,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:37:55,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:37:56,748 INFO L129 PetriNetUnfolder]: 704/1588 cut-off events. [2021-03-24 13:37:56,748 INFO L130 PetriNetUnfolder]: For 329292/329292 co-relation queries the response was YES. [2021-03-24 13:37:56,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29272 conditions, 1588 events. 704/1588 cut-off events. For 329292/329292 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 12314 event pairs, 3 based on Foata normal form. 1/1589 useless extension candidates. Maximal degree in co-relation 28754. Up to 1373 conditions per place. [2021-03-24 13:37:56,807 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1183 selfloop transitions, 75 changer transitions 7/1269 dead transitions. [2021-03-24 13:37:56,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1052 places, 1269 transitions, 41423 flow [2021-03-24 13:37:56,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:37:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:37:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:37:56,808 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:37:56,808 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:37:56,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:37:56,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:37:56,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:37:56,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:56,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:56,809 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:37:56,809 INFO L185 Difference]: Start difference. First operand has 1044 places, 1250 transitions, 36685 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:37:56,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1052 places, 1269 transitions, 41423 flow [2021-03-24 13:38:02,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1046 places, 1269 transitions, 39914 flow, removed 735 selfloop flow, removed 6 redundant places. [2021-03-24 13:38:02,211 INFO L241 Difference]: Finished difference. Result has 1051 places, 1253 transitions, 36331 flow [2021-03-24 13:38:02,211 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35180, PETRI_DIFFERENCE_MINUEND_PLACES=1038, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36331, PETRI_PLACES=1051, PETRI_TRANSITIONS=1253} [2021-03-24 13:38:02,211 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1020 predicate places. [2021-03-24 13:38:02,211 INFO L480 AbstractCegarLoop]: Abstraction has has 1051 places, 1253 transitions, 36331 flow [2021-03-24 13:38:02,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:02,212 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:02,212 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:38:02,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-03-24 13:38:02,212 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:38:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:02,212 INFO L82 PathProgramCache]: Analyzing trace with hash 13112828, now seen corresponding path program 168 times [2021-03-24 13:38:02,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:02,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604685059] [2021-03-24 13:38:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:02,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:02,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:02,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:02,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:02,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:02,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:02,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:02,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:02,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:02,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:02,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:02,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:02,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:02,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:02,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:02,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:02,289 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:38:02,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:38:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:02,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604685059] [2021-03-24 13:38:02,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:02,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:38:02,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407309183] [2021-03-24 13:38:02,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:38:02,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:02,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:38:02,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:38:02,292 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:38:02,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1051 places, 1253 transitions, 36331 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:02,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:02,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:38:02,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:03,553 INFO L129 PetriNetUnfolder]: 702/1590 cut-off events. [2021-03-24 13:38:03,553 INFO L130 PetriNetUnfolder]: For 310380/310380 co-relation queries the response was YES. [2021-03-24 13:38:03,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28808 conditions, 1590 events. 702/1590 cut-off events. For 310380/310380 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 12383 event pairs, 0 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 28286. Up to 1428 conditions per place. [2021-03-24 13:38:03,605 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1216 selfloop transitions, 43 changer transitions 4/1267 dead transitions. [2021-03-24 13:38:03,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1060 places, 1267 transitions, 40293 flow [2021-03-24 13:38:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:38:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:38:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:38:03,606 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:38:03,606 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:38:03,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:38:03,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:03,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:38:03,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:03,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:03,607 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:03,607 INFO L185 Difference]: Start difference. First operand has 1051 places, 1253 transitions, 36331 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:38:03,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1060 places, 1267 transitions, 40293 flow [2021-03-24 13:38:09,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1052 places, 1267 transitions, 39293 flow, removed 441 selfloop flow, removed 8 redundant places. [2021-03-24 13:38:09,094 INFO L241 Difference]: Finished difference. Result has 1057 places, 1255 transitions, 35971 flow [2021-03-24 13:38:09,094 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35339, PETRI_DIFFERENCE_MINUEND_PLACES=1043, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35971, PETRI_PLACES=1057, PETRI_TRANSITIONS=1255} [2021-03-24 13:38:09,094 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1026 predicate places. [2021-03-24 13:38:09,094 INFO L480 AbstractCegarLoop]: Abstraction has has 1057 places, 1255 transitions, 35971 flow [2021-03-24 13:38:09,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:09,095 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:09,095 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:38:09,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-03-24 13:38:09,095 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:38:09,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:09,095 INFO L82 PathProgramCache]: Analyzing trace with hash -845167056, now seen corresponding path program 169 times [2021-03-24 13:38:09,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:09,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775825410] [2021-03-24 13:38:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:09,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:09,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:09,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:09,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:09,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:09,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:09,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:09,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:09,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:09,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:09,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:09,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:09,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:09,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:09,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:09,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:09,164 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:38:09,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:38:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:09,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775825410] [2021-03-24 13:38:09,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:09,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:38:09,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316656206] [2021-03-24 13:38:09,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:38:09,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:09,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:38:09,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:38:09,167 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:38:09,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1057 places, 1255 transitions, 35971 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:09,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:09,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:38:09,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:10,454 INFO L129 PetriNetUnfolder]: 702/1596 cut-off events. [2021-03-24 13:38:10,455 INFO L130 PetriNetUnfolder]: For 308092/308092 co-relation queries the response was YES. [2021-03-24 13:38:10,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28675 conditions, 1596 events. 702/1596 cut-off events. For 308092/308092 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 12438 event pairs, 2 based on Foata normal form. 1/1597 useless extension candidates. Maximal degree in co-relation 28150. Up to 1356 conditions per place. [2021-03-24 13:38:10,502 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1153 selfloop transitions, 106 changer transitions 8/1271 dead transitions. [2021-03-24 13:38:10,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1066 places, 1271 transitions, 39975 flow [2021-03-24 13:38:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:38:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:38:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:38:10,503 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:38:10,503 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:38:10,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:38:10,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:10,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:38:10,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:10,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:10,503 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:10,503 INFO L185 Difference]: Start difference. First operand has 1057 places, 1255 transitions, 35971 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:38:10,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1066 places, 1271 transitions, 39975 flow [2021-03-24 13:38:16,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1058 places, 1271 transitions, 39523 flow, removed 189 selfloop flow, removed 8 redundant places. [2021-03-24 13:38:16,150 INFO L241 Difference]: Finished difference. Result has 1064 places, 1254 transitions, 36035 flow [2021-03-24 13:38:16,150 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35525, PETRI_DIFFERENCE_MINUEND_PLACES=1049, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36035, PETRI_PLACES=1064, PETRI_TRANSITIONS=1254} [2021-03-24 13:38:16,150 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1033 predicate places. [2021-03-24 13:38:16,150 INFO L480 AbstractCegarLoop]: Abstraction has has 1064 places, 1254 transitions, 36035 flow [2021-03-24 13:38:16,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:16,150 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:16,150 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:38:16,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-03-24 13:38:16,151 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:38:16,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:16,151 INFO L82 PathProgramCache]: Analyzing trace with hash -494508202, now seen corresponding path program 170 times [2021-03-24 13:38:16,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:16,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395941250] [2021-03-24 13:38:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:16,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:16,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:16,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:16,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:16,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:16,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:16,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:16,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:16,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:16,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:16,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:16,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:16,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:16,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:16,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:16,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:16,219 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:38:16,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:38:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:16,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395941250] [2021-03-24 13:38:16,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:16,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:38:16,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048834207] [2021-03-24 13:38:16,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:38:16,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:16,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:38:16,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:38:16,222 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:38:16,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1064 places, 1254 transitions, 36035 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:16,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:16,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:38:16,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:17,564 INFO L129 PetriNetUnfolder]: 701/1598 cut-off events. [2021-03-24 13:38:17,565 INFO L130 PetriNetUnfolder]: For 299468/299468 co-relation queries the response was YES. [2021-03-24 13:38:17,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28655 conditions, 1598 events. 701/1598 cut-off events. For 299468/299468 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 12476 event pairs, 3 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 28127. Up to 1378 conditions per place. [2021-03-24 13:38:17,611 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1182 selfloop transitions, 78 changer transitions 9/1273 dead transitions. [2021-03-24 13:38:17,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1073 places, 1273 transitions, 39772 flow [2021-03-24 13:38:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:38:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:38:17,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:38:17,612 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:38:17,612 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:38:17,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:38:17,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:17,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:38:17,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:17,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:17,613 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:17,613 INFO L185 Difference]: Start difference. First operand has 1064 places, 1254 transitions, 36035 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:38:17,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1073 places, 1273 transitions, 39772 flow [2021-03-24 13:38:22,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1060 places, 1273 transitions, 39334 flow, removed 104 selfloop flow, removed 13 redundant places. [2021-03-24 13:38:22,943 INFO L241 Difference]: Finished difference. Result has 1067 places, 1254 transitions, 36096 flow [2021-03-24 13:38:22,943 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35611, PETRI_DIFFERENCE_MINUEND_PLACES=1051, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36096, PETRI_PLACES=1067, PETRI_TRANSITIONS=1254} [2021-03-24 13:38:22,944 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1036 predicate places. [2021-03-24 13:38:22,944 INFO L480 AbstractCegarLoop]: Abstraction has has 1067 places, 1254 transitions, 36096 flow [2021-03-24 13:38:22,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:22,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:22,944 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:38:22,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-03-24 13:38:22,944 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:38:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:22,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1827699298, now seen corresponding path program 171 times [2021-03-24 13:38:22,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:22,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590234278] [2021-03-24 13:38:22,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:22,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:22,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:22,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:22,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:22,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:22,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:22,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:22,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:22,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:22,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:38:22,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:22,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:22,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:22,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:22,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:22,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:23,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:38:23,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:38:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:23,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590234278] [2021-03-24 13:38:23,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:23,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:38:23,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247265671] [2021-03-24 13:38:23,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:38:23,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:23,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:38:23,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:38:23,012 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:38:23,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1067 places, 1254 transitions, 36096 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:23,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:23,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:38:23,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:24,370 INFO L129 PetriNetUnfolder]: 698/1588 cut-off events. [2021-03-24 13:38:24,370 INFO L130 PetriNetUnfolder]: For 294939/294939 co-relation queries the response was YES. [2021-03-24 13:38:24,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28559 conditions, 1588 events. 698/1588 cut-off events. For 294939/294939 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 12386 event pairs, 3 based on Foata normal form. 1/1589 useless extension candidates. Maximal degree in co-relation 28030. Up to 1372 conditions per place. [2021-03-24 13:38:24,414 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1180 selfloop transitions, 77 changer transitions 7/1268 dead transitions. [2021-03-24 13:38:24,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1076 places, 1268 transitions, 39726 flow [2021-03-24 13:38:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:38:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:38:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:38:24,415 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:38:24,415 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:38:24,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:38:24,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:24,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:38:24,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:24,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:24,416 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:24,416 INFO L185 Difference]: Start difference. First operand has 1067 places, 1254 transitions, 36096 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:38:24,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1076 places, 1268 transitions, 39726 flow [2021-03-24 13:38:29,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1064 places, 1268 transitions, 39339 flow, removed 125 selfloop flow, removed 12 redundant places. [2021-03-24 13:38:29,629 INFO L241 Difference]: Finished difference. Result has 1068 places, 1251 transitions, 36149 flow [2021-03-24 13:38:29,629 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35717, PETRI_DIFFERENCE_MINUEND_PLACES=1055, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36149, PETRI_PLACES=1068, PETRI_TRANSITIONS=1251} [2021-03-24 13:38:29,629 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1037 predicate places. [2021-03-24 13:38:29,629 INFO L480 AbstractCegarLoop]: Abstraction has has 1068 places, 1251 transitions, 36149 flow [2021-03-24 13:38:29,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:29,629 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:29,629 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:38:29,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-03-24 13:38:29,630 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:38:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:29,630 INFO L82 PathProgramCache]: Analyzing trace with hash -764385088, now seen corresponding path program 172 times [2021-03-24 13:38:29,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:29,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490795413] [2021-03-24 13:38:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:29,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:29,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:29,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:29,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:29,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:29,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:29,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:29,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:29,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:29,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:38:29,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:29,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:29,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:29,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:29,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:29,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:29,695 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:38:29,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:38:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:29,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490795413] [2021-03-24 13:38:29,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:29,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:38:29,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392722220] [2021-03-24 13:38:29,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:38:29,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:29,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:38:29,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:38:29,698 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:38:29,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1068 places, 1251 transitions, 36149 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:29,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:29,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:38:29,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:30,976 INFO L129 PetriNetUnfolder]: 697/1585 cut-off events. [2021-03-24 13:38:30,976 INFO L130 PetriNetUnfolder]: For 298055/298055 co-relation queries the response was YES. [2021-03-24 13:38:31,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28811 conditions, 1585 events. 697/1585 cut-off events. For 298055/298055 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 12353 event pairs, 1 based on Foata normal form. 1/1586 useless extension candidates. Maximal degree in co-relation 28281. Up to 1426 conditions per place. [2021-03-24 13:38:31,033 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1208 selfloop transitions, 48 changer transitions 4/1264 dead transitions. [2021-03-24 13:38:31,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1075 places, 1264 transitions, 40203 flow [2021-03-24 13:38:31,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:38:31,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:38:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2021-03-24 13:38:31,034 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5826923076923077 [2021-03-24 13:38:31,034 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2021-03-24 13:38:31,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2021-03-24 13:38:31,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:31,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2021-03-24 13:38:31,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:31,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:31,034 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:31,034 INFO L185 Difference]: Start difference. First operand has 1068 places, 1251 transitions, 36149 flow. Second operand 10 states and 303 transitions. [2021-03-24 13:38:31,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1075 places, 1264 transitions, 40203 flow [2021-03-24 13:38:36,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1064 places, 1264 transitions, 39836 flow, removed 101 selfloop flow, removed 11 redundant places. [2021-03-24 13:38:36,478 INFO L241 Difference]: Finished difference. Result has 1069 places, 1253 transitions, 36436 flow [2021-03-24 13:38:36,479 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35788, PETRI_DIFFERENCE_MINUEND_PLACES=1055, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36436, PETRI_PLACES=1069, PETRI_TRANSITIONS=1253} [2021-03-24 13:38:36,479 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1038 predicate places. [2021-03-24 13:38:36,479 INFO L480 AbstractCegarLoop]: Abstraction has has 1069 places, 1253 transitions, 36436 flow [2021-03-24 13:38:36,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:36,479 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:36,479 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:38:36,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-03-24 13:38:36,479 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:38:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:36,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1269445248, now seen corresponding path program 173 times [2021-03-24 13:38:36,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:36,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611302689] [2021-03-24 13:38:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:36,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:36,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:36,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:36,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:36,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:36,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:36,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:36,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:36,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:36,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:38:36,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:36,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:36,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:36,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:36,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:36,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:36,549 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:38:36,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:38:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:36,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611302689] [2021-03-24 13:38:36,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:36,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:38:36,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276441897] [2021-03-24 13:38:36,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:38:36,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:36,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:38:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:38:36,552 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:38:36,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1069 places, 1253 transitions, 36436 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:36,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:36,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:38:36,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:37,848 INFO L129 PetriNetUnfolder]: 697/1591 cut-off events. [2021-03-24 13:38:37,848 INFO L130 PetriNetUnfolder]: For 299834/299834 co-relation queries the response was YES. [2021-03-24 13:38:37,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28930 conditions, 1591 events. 697/1591 cut-off events. For 299834/299834 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 12444 event pairs, 1 based on Foata normal form. 1/1592 useless extension candidates. Maximal degree in co-relation 28398. Up to 1408 conditions per place. [2021-03-24 13:38:37,904 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1171 selfloop transitions, 87 changer transitions 4/1266 dead transitions. [2021-03-24 13:38:37,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1078 places, 1266 transitions, 40432 flow [2021-03-24 13:38:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:38:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:38:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:38:37,905 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:38:37,905 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:38:37,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:38:37,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:37,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:38:37,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:37,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:37,906 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:37,906 INFO L185 Difference]: Start difference. First operand has 1069 places, 1253 transitions, 36436 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:38:37,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1078 places, 1266 transitions, 40432 flow [2021-03-24 13:38:43,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1068 places, 1266 transitions, 39960 flow, removed 189 selfloop flow, removed 10 redundant places. [2021-03-24 13:38:43,653 INFO L241 Difference]: Finished difference. Result has 1073 places, 1255 transitions, 36738 flow [2021-03-24 13:38:43,654 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=35972, PETRI_DIFFERENCE_MINUEND_PLACES=1059, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36738, PETRI_PLACES=1073, PETRI_TRANSITIONS=1255} [2021-03-24 13:38:43,654 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1042 predicate places. [2021-03-24 13:38:43,654 INFO L480 AbstractCegarLoop]: Abstraction has has 1073 places, 1255 transitions, 36738 flow [2021-03-24 13:38:43,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:43,654 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:43,654 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:38:43,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-03-24 13:38:43,654 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:38:43,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:43,655 INFO L82 PathProgramCache]: Analyzing trace with hash 953958618, now seen corresponding path program 174 times [2021-03-24 13:38:43,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:43,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777433692] [2021-03-24 13:38:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:43,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:43,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:43,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:43,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:43,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:43,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:43,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:43,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:43,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:43,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:38:43,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:43,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:43,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:43,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:43,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:43,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:43,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:38:43,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:38:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:43,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777433692] [2021-03-24 13:38:43,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:43,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:38:43,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233921814] [2021-03-24 13:38:43,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:38:43,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:43,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:38:43,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:38:43,721 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:38:43,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1073 places, 1255 transitions, 36738 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:43,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:43,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:38:43,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:45,023 INFO L129 PetriNetUnfolder]: 696/1595 cut-off events. [2021-03-24 13:38:45,023 INFO L130 PetriNetUnfolder]: For 298553/298553 co-relation queries the response was YES. [2021-03-24 13:38:45,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28951 conditions, 1595 events. 696/1595 cut-off events. For 298553/298553 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 12484 event pairs, 4 based on Foata normal form. 1/1596 useless extension candidates. Maximal degree in co-relation 28417. Up to 1413 conditions per place. [2021-03-24 13:38:45,081 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1212 selfloop transitions, 48 changer transitions 5/1269 dead transitions. [2021-03-24 13:38:45,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 1269 transitions, 40414 flow [2021-03-24 13:38:45,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:38:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:38:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:38:45,082 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:38:45,082 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:38:45,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:38:45,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:45,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:38:45,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:45,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:45,083 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:45,083 INFO L185 Difference]: Start difference. First operand has 1073 places, 1255 transitions, 36738 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:38:45,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 1269 transitions, 40414 flow [2021-03-24 13:38:50,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1072 places, 1269 transitions, 39870 flow, removed 183 selfloop flow, removed 10 redundant places. [2021-03-24 13:38:50,403 INFO L241 Difference]: Finished difference. Result has 1077 places, 1255 transitions, 36606 flow [2021-03-24 13:38:50,403 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=36198, PETRI_DIFFERENCE_MINUEND_PLACES=1063, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36606, PETRI_PLACES=1077, PETRI_TRANSITIONS=1255} [2021-03-24 13:38:50,404 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1046 predicate places. [2021-03-24 13:38:50,404 INFO L480 AbstractCegarLoop]: Abstraction has has 1077 places, 1255 transitions, 36606 flow [2021-03-24 13:38:50,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:50,404 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:50,404 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:38:50,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-03-24 13:38:50,404 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:38:50,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:50,404 INFO L82 PathProgramCache]: Analyzing trace with hash -760222566, now seen corresponding path program 175 times [2021-03-24 13:38:50,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:50,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477947567] [2021-03-24 13:38:50,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:50,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:50,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:50,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:50,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:50,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:50,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:50,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:50,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:50,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:50,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:38:50,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:50,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:50,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:50,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:50,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:50,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:50,456 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:38:50,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:38:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:50,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477947567] [2021-03-24 13:38:50,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:50,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:38:50,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354622987] [2021-03-24 13:38:50,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:38:50,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:50,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:38:50,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:38:50,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:38:50,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1077 places, 1255 transitions, 36606 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:50,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:50,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:38:50,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:51,632 INFO L129 PetriNetUnfolder]: 702/1602 cut-off events. [2021-03-24 13:38:51,632 INFO L130 PetriNetUnfolder]: For 303476/303476 co-relation queries the response was YES. [2021-03-24 13:38:51,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29074 conditions, 1602 events. 702/1602 cut-off events. For 303476/303476 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 12536 event pairs, 1 based on Foata normal form. 1/1603 useless extension candidates. Maximal degree in co-relation 28539. Up to 1440 conditions per place. [2021-03-24 13:38:51,686 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1225 selfloop transitions, 45 changer transitions 3/1277 dead transitions. [2021-03-24 13:38:51,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1085 places, 1277 transitions, 40593 flow [2021-03-24 13:38:51,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:38:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:38:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:38:51,687 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:38:51,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:38:51,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:38:51,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:51,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:38:51,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:51,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:51,688 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:51,688 INFO L185 Difference]: Start difference. First operand has 1077 places, 1255 transitions, 36606 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:38:51,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1085 places, 1277 transitions, 40593 flow [2021-03-24 13:38:56,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1074 places, 1277 transitions, 40189 flow, removed 132 selfloop flow, removed 11 redundant places. [2021-03-24 13:38:56,828 INFO L241 Difference]: Finished difference. Result has 1080 places, 1267 transitions, 37061 flow [2021-03-24 13:38:56,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=36210, PETRI_DIFFERENCE_MINUEND_PLACES=1066, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37061, PETRI_PLACES=1080, PETRI_TRANSITIONS=1267} [2021-03-24 13:38:56,828 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1049 predicate places. [2021-03-24 13:38:56,828 INFO L480 AbstractCegarLoop]: Abstraction has has 1080 places, 1267 transitions, 37061 flow [2021-03-24 13:38:56,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:56,828 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:38:56,828 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:38:56,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-03-24 13:38:56,828 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:38:56,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:38:56,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1619691742, now seen corresponding path program 176 times [2021-03-24 13:38:56,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:38:56,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440857003] [2021-03-24 13:38:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:38:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:38:56,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:56,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:56,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:56,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:56,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:56,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:56,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:56,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:56,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:56,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:38:56,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:56,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:38:56,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:56,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:38:56,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:38:56,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:38:56,897 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:38:56,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:38:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:38:56,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440857003] [2021-03-24 13:38:56,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:38:56,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:38:56,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145045793] [2021-03-24 13:38:56,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:38:56,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:38:56,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:38:56,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:38:56,900 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:38:56,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1080 places, 1267 transitions, 37061 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:56,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:38:56,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:38:56,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:38:58,193 INFO L129 PetriNetUnfolder]: 701/1606 cut-off events. [2021-03-24 13:38:58,193 INFO L130 PetriNetUnfolder]: For 310993/310993 co-relation queries the response was YES. [2021-03-24 13:38:58,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29080 conditions, 1606 events. 701/1606 cut-off events. For 310993/310993 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 12651 event pairs, 0 based on Foata normal form. 1/1607 useless extension candidates. Maximal degree in co-relation 28545. Up to 1421 conditions per place. [2021-03-24 13:38:58,255 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1183 selfloop transitions, 86 changer transitions 6/1279 dead transitions. [2021-03-24 13:38:58,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1089 places, 1279 transitions, 40698 flow [2021-03-24 13:38:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:38:58,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:38:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:38:58,256 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:38:58,256 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:38:58,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:38:58,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:38:58,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:38:58,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:58,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:58,256 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:38:58,256 INFO L185 Difference]: Start difference. First operand has 1080 places, 1267 transitions, 37061 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:38:58,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1089 places, 1279 transitions, 40698 flow [2021-03-24 13:39:04,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1086 places, 1279 transitions, 40237 flow, removed 219 selfloop flow, removed 3 redundant places. [2021-03-24 13:39:04,114 INFO L241 Difference]: Finished difference. Result has 1090 places, 1266 transitions, 37089 flow [2021-03-24 13:39:04,114 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=36600, PETRI_DIFFERENCE_MINUEND_PLACES=1077, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=37089, PETRI_PLACES=1090, PETRI_TRANSITIONS=1266} [2021-03-24 13:39:04,115 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1059 predicate places. [2021-03-24 13:39:04,115 INFO L480 AbstractCegarLoop]: Abstraction has has 1090 places, 1266 transitions, 37089 flow [2021-03-24 13:39:04,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:04,115 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:04,115 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:04,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-03-24 13:39:04,115 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:39:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:04,115 INFO L82 PathProgramCache]: Analyzing trace with hash -2127725132, now seen corresponding path program 177 times [2021-03-24 13:39:04,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:04,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426364075] [2021-03-24 13:39:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:04,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:04,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:04,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:04,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:04,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:04,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:04,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:04,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:04,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:04,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:04,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:04,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:04,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:04,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:04,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:04,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:04,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:39:04,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:39:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:04,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426364075] [2021-03-24 13:39:04,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:04,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:39:04,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411789795] [2021-03-24 13:39:04,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:39:04,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:04,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:39:04,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:39:04,184 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:39:04,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1090 places, 1266 transitions, 37089 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:04,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:04,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:39:04,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:05,556 INFO L129 PetriNetUnfolder]: 701/1608 cut-off events. [2021-03-24 13:39:05,556 INFO L130 PetriNetUnfolder]: For 318864/318864 co-relation queries the response was YES. [2021-03-24 13:39:05,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29347 conditions, 1608 events. 701/1608 cut-off events. For 318864/318864 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 12653 event pairs, 2 based on Foata normal form. 1/1609 useless extension candidates. Maximal degree in co-relation 28859. Up to 1374 conditions per place. [2021-03-24 13:39:05,616 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1132 selfloop transitions, 134 changer transitions 10/1280 dead transitions. [2021-03-24 13:39:05,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1098 places, 1280 transitions, 41153 flow [2021-03-24 13:39:05,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:39:05,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:39:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:39:05,617 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:39:05,617 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:39:05,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:39:05,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:05,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:39:05,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:05,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:05,618 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:05,618 INFO L185 Difference]: Start difference. First operand has 1090 places, 1266 transitions, 37089 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:39:05,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1098 places, 1280 transitions, 41153 flow [2021-03-24 13:39:11,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1084 places, 1280 transitions, 40739 flow, removed 108 selfloop flow, removed 14 redundant places. [2021-03-24 13:39:11,650 INFO L241 Difference]: Finished difference. Result has 1089 places, 1262 transitions, 37177 flow [2021-03-24 13:39:11,650 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=36683, PETRI_DIFFERENCE_MINUEND_PLACES=1075, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=37177, PETRI_PLACES=1089, PETRI_TRANSITIONS=1262} [2021-03-24 13:39:11,650 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1058 predicate places. [2021-03-24 13:39:11,650 INFO L480 AbstractCegarLoop]: Abstraction has has 1089 places, 1262 transitions, 37177 flow [2021-03-24 13:39:11,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:11,650 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:11,650 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:11,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-03-24 13:39:11,651 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:39:11,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:11,651 INFO L82 PathProgramCache]: Analyzing trace with hash -56161702, now seen corresponding path program 178 times [2021-03-24 13:39:11,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:11,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749096239] [2021-03-24 13:39:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:11,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:11,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:11,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:11,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:11,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:11,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:11,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:11,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:11,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:11,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:11,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:11,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:11,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:11,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:11,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:11,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:11,707 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:39:11,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:39:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:11,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749096239] [2021-03-24 13:39:11,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:11,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:11,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349973770] [2021-03-24 13:39:11,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:39:11,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:11,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:39:11,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:39:11,710 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:39:11,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1089 places, 1262 transitions, 37177 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:11,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:11,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:39:11,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:13,042 INFO L129 PetriNetUnfolder]: 697/1606 cut-off events. [2021-03-24 13:39:13,042 INFO L130 PetriNetUnfolder]: For 311949/311949 co-relation queries the response was YES. [2021-03-24 13:39:13,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29517 conditions, 1606 events. 697/1606 cut-off events. For 311949/311949 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 12659 event pairs, 5 based on Foata normal form. 1/1607 useless extension candidates. Maximal degree in co-relation 28978. Up to 1404 conditions per place. [2021-03-24 13:39:13,124 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1218 selfloop transitions, 53 changer transitions 4/1279 dead transitions. [2021-03-24 13:39:13,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1097 places, 1279 transitions, 41417 flow [2021-03-24 13:39:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:39:13,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:39:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:39:13,125 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:39:13,125 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:39:13,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:39:13,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:13,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:39:13,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:13,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:13,126 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:13,126 INFO L185 Difference]: Start difference. First operand has 1089 places, 1262 transitions, 37177 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:39:13,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1097 places, 1279 transitions, 41417 flow [2021-03-24 13:39:19,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1083 places, 1279 transitions, 40837 flow, removed 111 selfloop flow, removed 14 redundant places. [2021-03-24 13:39:19,382 INFO L241 Difference]: Finished difference. Result has 1088 places, 1265 transitions, 37401 flow [2021-03-24 13:39:19,382 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=36617, PETRI_DIFFERENCE_MINUEND_PLACES=1075, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37401, PETRI_PLACES=1088, PETRI_TRANSITIONS=1265} [2021-03-24 13:39:19,383 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1057 predicate places. [2021-03-24 13:39:19,383 INFO L480 AbstractCegarLoop]: Abstraction has has 1088 places, 1265 transitions, 37401 flow [2021-03-24 13:39:19,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:19,383 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:19,383 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:19,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-03-24 13:39:19,383 INFO L428 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:39:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:19,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1300637236, now seen corresponding path program 179 times [2021-03-24 13:39:19,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:19,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663290594] [2021-03-24 13:39:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:19,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:19,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:19,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:19,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:19,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:19,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:19,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:19,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:19,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:19,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:19,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:19,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:19,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:19,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:19,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:19,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:19,437 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:39:19,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:39:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:19,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663290594] [2021-03-24 13:39:19,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:19,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:19,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804706415] [2021-03-24 13:39:19,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:39:19,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:39:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:39:19,439 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:39:19,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1088 places, 1265 transitions, 37401 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:19,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:19,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:39:19,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:20,735 INFO L129 PetriNetUnfolder]: 705/1618 cut-off events. [2021-03-24 13:39:20,735 INFO L130 PetriNetUnfolder]: For 321811/321811 co-relation queries the response was YES. [2021-03-24 13:39:20,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29575 conditions, 1618 events. 705/1618 cut-off events. For 321811/321811 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 12751 event pairs, 1 based on Foata normal form. 1/1619 useless extension candidates. Maximal degree in co-relation 28999. Up to 1433 conditions per place. [2021-03-24 13:39:20,792 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1200 selfloop transitions, 83 changer transitions 3/1290 dead transitions. [2021-03-24 13:39:20,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1096 places, 1290 transitions, 41499 flow [2021-03-24 13:39:20,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:39:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:39:20,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 275 transitions. [2021-03-24 13:39:20,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5876068376068376 [2021-03-24 13:39:20,793 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 275 transitions. [2021-03-24 13:39:20,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 275 transitions. [2021-03-24 13:39:20,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:20,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 275 transitions. [2021-03-24 13:39:20,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.555555555555557) internal successors, (275), 9 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:20,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:20,794 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:20,794 INFO L185 Difference]: Start difference. First operand has 1088 places, 1265 transitions, 37401 flow. Second operand 9 states and 275 transitions. [2021-03-24 13:39:20,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1096 places, 1290 transitions, 41499 flow [2021-03-24 13:39:26,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1087 places, 1290 transitions, 40908 flow, removed 237 selfloop flow, removed 9 redundant places. [2021-03-24 13:39:26,795 INFO L241 Difference]: Finished difference. Result has 1093 places, 1280 transitions, 37870 flow [2021-03-24 13:39:26,796 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=36816, PETRI_DIFFERENCE_MINUEND_PLACES=1079, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37870, PETRI_PLACES=1093, PETRI_TRANSITIONS=1280} [2021-03-24 13:39:26,796 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1062 predicate places. [2021-03-24 13:39:26,796 INFO L480 AbstractCegarLoop]: Abstraction has has 1093 places, 1280 transitions, 37870 flow [2021-03-24 13:39:26,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:26,796 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:26,796 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:26,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-03-24 13:39:26,796 INFO L428 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:39:26,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:26,797 INFO L82 PathProgramCache]: Analyzing trace with hash 441168060, now seen corresponding path program 180 times [2021-03-24 13:39:26,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:26,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45408390] [2021-03-24 13:39:26,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:26,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:26,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:26,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:26,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:26,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:26,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:26,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:26,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:26,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:26,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:26,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:26,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:26,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:26,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:26,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:26,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:26,882 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:39:26,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:39:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:26,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45408390] [2021-03-24 13:39:26,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:26,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:39:26,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516703961] [2021-03-24 13:39:26,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:39:26,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:26,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:39:26,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:39:26,885 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:39:26,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1093 places, 1280 transitions, 37870 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:26,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:26,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:39:26,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:28,226 INFO L129 PetriNetUnfolder]: 704/1619 cut-off events. [2021-03-24 13:39:28,226 INFO L130 PetriNetUnfolder]: For 314232/314232 co-relation queries the response was YES. [2021-03-24 13:39:28,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29563 conditions, 1619 events. 704/1619 cut-off events. For 314232/314232 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 12808 event pairs, 2 based on Foata normal form. 1/1620 useless extension candidates. Maximal degree in co-relation 28986. Up to 1402 conditions per place. [2021-03-24 13:39:28,283 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1141 selfloop transitions, 138 changer transitions 8/1291 dead transitions. [2021-03-24 13:39:28,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1102 places, 1291 transitions, 41516 flow [2021-03-24 13:39:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:39:28,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:39:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:39:28,284 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:39:28,284 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:39:28,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:39:28,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:28,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:39:28,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:28,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:28,285 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:28,285 INFO L185 Difference]: Start difference. First operand has 1093 places, 1280 transitions, 37870 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:39:28,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1102 places, 1291 transitions, 41516 flow [2021-03-24 13:39:33,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1099 places, 1291 transitions, 41031 flow, removed 220 selfloop flow, removed 3 redundant places. [2021-03-24 13:39:33,991 INFO L241 Difference]: Finished difference. Result has 1103 places, 1276 transitions, 37936 flow [2021-03-24 13:39:33,992 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=37385, PETRI_DIFFERENCE_MINUEND_PLACES=1090, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=37936, PETRI_PLACES=1103, PETRI_TRANSITIONS=1276} [2021-03-24 13:39:33,992 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1072 predicate places. [2021-03-24 13:39:33,992 INFO L480 AbstractCegarLoop]: Abstraction has has 1103 places, 1276 transitions, 37936 flow [2021-03-24 13:39:33,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:33,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:33,992 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:33,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-03-24 13:39:33,992 INFO L428 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:39:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1510563018, now seen corresponding path program 181 times [2021-03-24 13:39:33,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:33,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424270317] [2021-03-24 13:39:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:33,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:33,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:34,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:34,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:34,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:34,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:34,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:34,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:34,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:34,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:34,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:34,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:34,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:34,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:34,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:34,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:34,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:39:34,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:39:34,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:34,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424270317] [2021-03-24 13:39:34,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:34,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:39:34,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738515252] [2021-03-24 13:39:34,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:39:34,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:34,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:39:34,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:39:34,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:39:34,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1103 places, 1276 transitions, 37936 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:34,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:34,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:39:34,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:35,427 INFO L129 PetriNetUnfolder]: 703/1615 cut-off events. [2021-03-24 13:39:35,427 INFO L130 PetriNetUnfolder]: For 326658/326658 co-relation queries the response was YES. [2021-03-24 13:39:35,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29903 conditions, 1615 events. 703/1615 cut-off events. For 326658/326658 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 12765 event pairs, 7 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 29322. Up to 1397 conditions per place. [2021-03-24 13:39:35,486 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1209 selfloop transitions, 69 changer transitions 9/1291 dead transitions. [2021-03-24 13:39:35,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1111 places, 1291 transitions, 42124 flow [2021-03-24 13:39:35,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:39:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:39:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:39:35,487 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:39:35,487 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:39:35,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:39:35,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:35,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:39:35,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:35,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:35,487 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:35,487 INFO L185 Difference]: Start difference. First operand has 1103 places, 1276 transitions, 37936 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:39:35,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1111 places, 1291 transitions, 42124 flow [2021-03-24 13:39:41,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1096 places, 1291 transitions, 41576 flow, removed 106 selfloop flow, removed 15 redundant places. [2021-03-24 13:39:41,560 INFO L241 Difference]: Finished difference. Result has 1101 places, 1273 transitions, 37730 flow [2021-03-24 13:39:41,560 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=37398, PETRI_DIFFERENCE_MINUEND_PLACES=1088, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37730, PETRI_PLACES=1101, PETRI_TRANSITIONS=1273} [2021-03-24 13:39:41,561 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1070 predicate places. [2021-03-24 13:39:41,561 INFO L480 AbstractCegarLoop]: Abstraction has has 1101 places, 1273 transitions, 37730 flow [2021-03-24 13:39:41,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:41,561 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:41,561 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:41,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-03-24 13:39:41,561 INFO L428 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:39:41,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:41,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2041177212, now seen corresponding path program 182 times [2021-03-24 13:39:41,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:41,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410626757] [2021-03-24 13:39:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:41,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:41,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:41,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:41,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:41,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:41,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:41,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:41,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:41,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:41,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:41,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:41,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:41,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:41,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:41,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:41,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:41,630 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:39:41,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:39:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:41,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410626757] [2021-03-24 13:39:41,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:41,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:39:41,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142064145] [2021-03-24 13:39:41,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:39:41,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:41,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:39:41,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:39:41,633 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:39:41,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1101 places, 1273 transitions, 37730 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:41,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:41,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:39:41,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:42,988 INFO L129 PetriNetUnfolder]: 703/1618 cut-off events. [2021-03-24 13:39:42,988 INFO L130 PetriNetUnfolder]: For 348799/348799 co-relation queries the response was YES. [2021-03-24 13:39:43,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30227 conditions, 1618 events. 703/1618 cut-off events. For 348799/348799 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 12805 event pairs, 1 based on Foata normal form. 1/1619 useless extension candidates. Maximal degree in co-relation 29646. Up to 1451 conditions per place. [2021-03-24 13:39:43,047 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1235 selfloop transitions, 46 changer transitions 4/1289 dead transitions. [2021-03-24 13:39:43,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1110 places, 1289 transitions, 42646 flow [2021-03-24 13:39:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:39:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:39:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2021-03-24 13:39:43,048 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5826923076923077 [2021-03-24 13:39:43,048 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2021-03-24 13:39:43,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2021-03-24 13:39:43,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:43,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2021-03-24 13:39:43,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:43,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:43,049 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:43,049 INFO L185 Difference]: Start difference. First operand has 1101 places, 1273 transitions, 37730 flow. Second operand 10 states and 303 transitions. [2021-03-24 13:39:43,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1110 places, 1289 transitions, 42646 flow [2021-03-24 13:39:49,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1101 places, 1289 transitions, 42273 flow, removed 118 selfloop flow, removed 9 redundant places. [2021-03-24 13:39:49,171 INFO L241 Difference]: Finished difference. Result has 1106 places, 1278 transitions, 38788 flow [2021-03-24 13:39:49,172 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=37381, PETRI_DIFFERENCE_MINUEND_PLACES=1092, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=38788, PETRI_PLACES=1106, PETRI_TRANSITIONS=1278} [2021-03-24 13:39:49,172 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1075 predicate places. [2021-03-24 13:39:49,172 INFO L480 AbstractCegarLoop]: Abstraction has has 1106 places, 1278 transitions, 38788 flow [2021-03-24 13:39:49,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,172 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:49,172 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:49,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-03-24 13:39:49,172 INFO L428 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:39:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:49,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1372319006, now seen corresponding path program 183 times [2021-03-24 13:39:49,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:49,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543051391] [2021-03-24 13:39:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:49,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:49,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:49,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:49,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:49,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:49,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:49,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:49,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:49,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:49,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:39:49,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:39:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:49,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543051391] [2021-03-24 13:39:49,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:49,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:39:49,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839880256] [2021-03-24 13:39:49,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:39:49,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:49,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:39:49,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:39:49,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:39:49,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1106 places, 1278 transitions, 38788 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:49,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:49,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:39:49,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:50,639 INFO L129 PetriNetUnfolder]: 703/1621 cut-off events. [2021-03-24 13:39:50,639 INFO L130 PetriNetUnfolder]: For 357949/357949 co-relation queries the response was YES. [2021-03-24 13:39:50,690 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30465 conditions, 1621 events. 703/1621 cut-off events. For 357949/357949 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 12876 event pairs, 4 based on Foata normal form. 1/1622 useless extension candidates. Maximal degree in co-relation 29882. Up to 1406 conditions per place. [2021-03-24 13:39:50,699 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1208 selfloop transitions, 80 changer transitions 4/1296 dead transitions. [2021-03-24 13:39:50,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1115 places, 1296 transitions, 43191 flow [2021-03-24 13:39:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:39:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:39:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:39:50,700 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:39:50,700 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:39:50,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:39:50,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:50,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:39:50,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,701 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:50,701 INFO L185 Difference]: Start difference. First operand has 1106 places, 1278 transitions, 38788 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:39:50,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1115 places, 1296 transitions, 43191 flow [2021-03-24 13:39:57,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1108 places, 1296 transitions, 42092 flow, removed 527 selfloop flow, removed 7 redundant places. [2021-03-24 13:39:57,361 INFO L241 Difference]: Finished difference. Result has 1113 places, 1282 transitions, 38658 flow [2021-03-24 13:39:57,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=37693, PETRI_DIFFERENCE_MINUEND_PLACES=1099, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=38658, PETRI_PLACES=1113, PETRI_TRANSITIONS=1282} [2021-03-24 13:39:57,361 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1082 predicate places. [2021-03-24 13:39:57,362 INFO L480 AbstractCegarLoop]: Abstraction has has 1113 places, 1282 transitions, 38658 flow [2021-03-24 13:39:57,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:57,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:39:57,362 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:39:57,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-03-24 13:39:57,362 INFO L428 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:39:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:39:57,362 INFO L82 PathProgramCache]: Analyzing trace with hash -524742750, now seen corresponding path program 184 times [2021-03-24 13:39:57,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:39:57,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937154120] [2021-03-24 13:39:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:39:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:39:57,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:57,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:57,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:57,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:57,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:39:57,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:39:57,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:39:57,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:39:57,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:39:57,428 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:39:57,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:39:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:39:57,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937154120] [2021-03-24 13:39:57,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:39:57,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:39:57,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668378954] [2021-03-24 13:39:57,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:39:57,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:39:57,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:39:57,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:39:57,431 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:39:57,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1113 places, 1282 transitions, 38658 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:57,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:39:57,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:39:57,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:39:58,808 INFO L129 PetriNetUnfolder]: 703/1624 cut-off events. [2021-03-24 13:39:58,808 INFO L130 PetriNetUnfolder]: For 352570/352570 co-relation queries the response was YES. [2021-03-24 13:39:58,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30370 conditions, 1624 events. 703/1624 cut-off events. For 352570/352570 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 12910 event pairs, 0 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 29783. Up to 1457 conditions per place. [2021-03-24 13:39:58,868 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1241 selfloop transitions, 46 changer transitions 4/1295 dead transitions. [2021-03-24 13:39:58,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1122 places, 1295 transitions, 42796 flow [2021-03-24 13:39:58,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:39:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:39:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2021-03-24 13:39:58,869 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5826923076923077 [2021-03-24 13:39:58,869 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2021-03-24 13:39:58,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2021-03-24 13:39:58,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:39:58,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2021-03-24 13:39:58,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:58,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:58,869 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:39:58,869 INFO L185 Difference]: Start difference. First operand has 1113 places, 1282 transitions, 38658 flow. Second operand 10 states and 303 transitions. [2021-03-24 13:39:58,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1122 places, 1295 transitions, 42796 flow [2021-03-24 13:40:05,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1115 places, 1295 transitions, 42179 flow, removed 254 selfloop flow, removed 7 redundant places. [2021-03-24 13:40:05,140 INFO L241 Difference]: Finished difference. Result has 1120 places, 1284 transitions, 38715 flow [2021-03-24 13:40:05,140 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38045, PETRI_DIFFERENCE_MINUEND_PLACES=1106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=38715, PETRI_PLACES=1120, PETRI_TRANSITIONS=1284} [2021-03-24 13:40:05,140 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1089 predicate places. [2021-03-24 13:40:05,140 INFO L480 AbstractCegarLoop]: Abstraction has has 1120 places, 1284 transitions, 38715 flow [2021-03-24 13:40:05,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:05,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:05,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:05,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-03-24 13:40:05,141 INFO L428 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:40:05,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1383022634, now seen corresponding path program 185 times [2021-03-24 13:40:05,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:05,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277429526] [2021-03-24 13:40:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:05,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:05,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:05,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:05,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:05,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:05,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:05,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:05,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:05,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:05,205 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:40:05,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:40:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:05,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277429526] [2021-03-24 13:40:05,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:05,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:40:05,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456933589] [2021-03-24 13:40:05,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:40:05,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:05,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:40:05,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:40:05,208 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:40:05,208 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1120 places, 1284 transitions, 38715 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:05,208 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:05,208 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:40:05,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:06,606 INFO L129 PetriNetUnfolder]: 705/1632 cut-off events. [2021-03-24 13:40:06,606 INFO L130 PetriNetUnfolder]: For 376089/376089 co-relation queries the response was YES. [2021-03-24 13:40:06,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30790 conditions, 1632 events. 705/1632 cut-off events. For 376089/376089 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 13013 event pairs, 1 based on Foata normal form. 1/1633 useless extension candidates. Maximal degree in co-relation 30202. Up to 1432 conditions per place. [2021-03-24 13:40:06,764 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1219 selfloop transitions, 70 changer transitions 8/1301 dead transitions. [2021-03-24 13:40:06,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1129 places, 1301 transitions, 43663 flow [2021-03-24 13:40:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:40:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:40:06,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:40:06,765 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:40:06,765 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:40:06,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:40:06,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:06,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:40:06,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:06,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:06,766 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:06,766 INFO L185 Difference]: Start difference. First operand has 1120 places, 1284 transitions, 38715 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:40:06,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1129 places, 1301 transitions, 43663 flow [2021-03-24 13:40:13,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1121 places, 1301 transitions, 43206 flow, removed 192 selfloop flow, removed 8 redundant places. [2021-03-24 13:40:13,450 INFO L241 Difference]: Finished difference. Result has 1126 places, 1285 transitions, 39421 flow [2021-03-24 13:40:13,450 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38266, PETRI_DIFFERENCE_MINUEND_PLACES=1112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=39421, PETRI_PLACES=1126, PETRI_TRANSITIONS=1285} [2021-03-24 13:40:13,451 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1095 predicate places. [2021-03-24 13:40:13,451 INFO L480 AbstractCegarLoop]: Abstraction has has 1126 places, 1285 transitions, 39421 flow [2021-03-24 13:40:13,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:13,451 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:13,451 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:13,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-03-24 13:40:13,451 INFO L428 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:40:13,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:13,451 INFO L82 PathProgramCache]: Analyzing trace with hash 346024700, now seen corresponding path program 186 times [2021-03-24 13:40:13,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:13,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294657549] [2021-03-24 13:40:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:13,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:13,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:13,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:13,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:13,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:13,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:13,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:13,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:13,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:13,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:40:13,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:40:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:13,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294657549] [2021-03-24 13:40:13,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:13,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:40:13,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094051193] [2021-03-24 13:40:13,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:40:13,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:13,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:40:13,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:40:13,519 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:40:13,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1126 places, 1285 transitions, 39421 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:13,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:13,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:40:13,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:15,024 INFO L129 PetriNetUnfolder]: 703/1630 cut-off events. [2021-03-24 13:40:15,025 INFO L130 PetriNetUnfolder]: For 370363/370363 co-relation queries the response was YES. [2021-03-24 13:40:15,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30845 conditions, 1630 events. 703/1630 cut-off events. For 370363/370363 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 13021 event pairs, 3 based on Foata normal form. 1/1631 useless extension candidates. Maximal degree in co-relation 30255. Up to 1389 conditions per place. [2021-03-24 13:40:15,074 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1185 selfloop transitions, 103 changer transitions 8/1300 dead transitions. [2021-03-24 13:40:15,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1135 places, 1300 transitions, 43687 flow [2021-03-24 13:40:15,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:40:15,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:40:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:40:15,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:40:15,076 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:40:15,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:40:15,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:15,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:40:15,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:15,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:15,076 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:15,076 INFO L185 Difference]: Start difference. First operand has 1126 places, 1285 transitions, 39421 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:40:15,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1135 places, 1300 transitions, 43687 flow [2021-03-24 13:40:22,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1127 places, 1300 transitions, 42644 flow, removed 480 selfloop flow, removed 8 redundant places. [2021-03-24 13:40:22,140 INFO L241 Difference]: Finished difference. Result has 1132 places, 1283 transitions, 38872 flow [2021-03-24 13:40:22,141 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38392, PETRI_DIFFERENCE_MINUEND_PLACES=1118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=38872, PETRI_PLACES=1132, PETRI_TRANSITIONS=1283} [2021-03-24 13:40:22,141 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1101 predicate places. [2021-03-24 13:40:22,141 INFO L480 AbstractCegarLoop]: Abstraction has has 1132 places, 1283 transitions, 38872 flow [2021-03-24 13:40:22,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:22,141 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:22,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:22,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-03-24 13:40:22,141 INFO L428 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:40:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:22,141 INFO L82 PathProgramCache]: Analyzing trace with hash -535446378, now seen corresponding path program 187 times [2021-03-24 13:40:22,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:22,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56181863] [2021-03-24 13:40:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:22,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:22,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:22,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:22,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:22,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:22,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:22,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:22,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:22,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:22,206 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:40:22,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:40:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:22,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56181863] [2021-03-24 13:40:22,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:22,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:40:22,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921777249] [2021-03-24 13:40:22,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:40:22,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:22,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:40:22,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:40:22,209 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:40:22,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1132 places, 1283 transitions, 38872 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:22,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:22,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:40:22,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:23,629 INFO L129 PetriNetUnfolder]: 700/1625 cut-off events. [2021-03-24 13:40:23,629 INFO L130 PetriNetUnfolder]: For 342050/342050 co-relation queries the response was YES. [2021-03-24 13:40:23,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30400 conditions, 1625 events. 700/1625 cut-off events. For 342050/342050 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 12996 event pairs, 4 based on Foata normal form. 1/1626 useless extension candidates. Maximal degree in co-relation 29807. Up to 1441 conditions per place. [2021-03-24 13:40:23,680 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1242 selfloop transitions, 41 changer transitions 9/1296 dead transitions. [2021-03-24 13:40:23,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1141 places, 1296 transitions, 42652 flow [2021-03-24 13:40:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:40:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:40:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 304 transitions. [2021-03-24 13:40:23,681 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2021-03-24 13:40:23,681 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 304 transitions. [2021-03-24 13:40:23,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 304 transitions. [2021-03-24 13:40:23,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:23,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 304 transitions. [2021-03-24 13:40:23,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.4) internal successors, (304), 10 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:23,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:23,682 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:23,682 INFO L185 Difference]: Start difference. First operand has 1132 places, 1283 transitions, 38872 flow. Second operand 10 states and 304 transitions. [2021-03-24 13:40:23,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1141 places, 1296 transitions, 42652 flow [2021-03-24 13:40:29,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1129 places, 1296 transitions, 42177 flow, removed 128 selfloop flow, removed 12 redundant places. [2021-03-24 13:40:29,799 INFO L241 Difference]: Finished difference. Result has 1133 places, 1279 transitions, 38522 flow [2021-03-24 13:40:29,800 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38417, PETRI_DIFFERENCE_MINUEND_PLACES=1120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=38522, PETRI_PLACES=1133, PETRI_TRANSITIONS=1279} [2021-03-24 13:40:29,800 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1102 predicate places. [2021-03-24 13:40:29,800 INFO L480 AbstractCegarLoop]: Abstraction has has 1133 places, 1279 transitions, 38522 flow [2021-03-24 13:40:29,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:29,800 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:29,800 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:29,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-03-24 13:40:29,800 INFO L428 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:40:29,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:29,800 INFO L82 PathProgramCache]: Analyzing trace with hash 329706500, now seen corresponding path program 188 times [2021-03-24 13:40:29,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:29,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260115248] [2021-03-24 13:40:29,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:29,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:29,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:29,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:29,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:29,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:29,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:29,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:29,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:29,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:29,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:40:29,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:40:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:29,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260115248] [2021-03-24 13:40:29,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:29,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:40:29,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827295663] [2021-03-24 13:40:29,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:40:29,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:29,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:40:29,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:40:29,869 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:40:29,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1133 places, 1279 transitions, 38522 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:29,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:29,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:40:29,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:31,280 INFO L129 PetriNetUnfolder]: 701/1625 cut-off events. [2021-03-24 13:40:31,280 INFO L130 PetriNetUnfolder]: For 359802/359802 co-relation queries the response was YES. [2021-03-24 13:40:31,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30646 conditions, 1625 events. 701/1625 cut-off events. For 359802/359802 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 12925 event pairs, 2 based on Foata normal form. 1/1626 useless extension candidates. Maximal degree in co-relation 30054. Up to 1455 conditions per place. [2021-03-24 13:40:31,329 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1231 selfloop transitions, 55 changer transitions 4/1294 dead transitions. [2021-03-24 13:40:31,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1140 places, 1294 transitions, 43510 flow [2021-03-24 13:40:31,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:40:31,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:40:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2021-03-24 13:40:31,330 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5826923076923077 [2021-03-24 13:40:31,330 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2021-03-24 13:40:31,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2021-03-24 13:40:31,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:31,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2021-03-24 13:40:31,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:31,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:31,330 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:31,330 INFO L185 Difference]: Start difference. First operand has 1133 places, 1279 transitions, 38522 flow. Second operand 10 states and 303 transitions. [2021-03-24 13:40:31,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1140 places, 1294 transitions, 43510 flow [2021-03-24 13:40:38,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1121 places, 1294 transitions, 42833 flow, removed 217 selfloop flow, removed 19 redundant places. [2021-03-24 13:40:38,119 INFO L241 Difference]: Finished difference. Result has 1125 places, 1284 transitions, 39324 flow [2021-03-24 13:40:38,120 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=37855, PETRI_DIFFERENCE_MINUEND_PLACES=1112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=39324, PETRI_PLACES=1125, PETRI_TRANSITIONS=1284} [2021-03-24 13:40:38,120 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1094 predicate places. [2021-03-24 13:40:38,120 INFO L480 AbstractCegarLoop]: Abstraction has has 1125 places, 1284 transitions, 39324 flow [2021-03-24 13:40:38,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:38,120 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:38,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:38,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-03-24 13:40:38,120 INFO L428 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:40:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:38,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2048050206, now seen corresponding path program 189 times [2021-03-24 13:40:38,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:38,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417435867] [2021-03-24 13:40:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:38,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:38,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:38,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:38,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:38,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:38,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:38,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:38,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:38,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:38,188 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:40:38,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:40:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:38,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417435867] [2021-03-24 13:40:38,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:38,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:40:38,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080429446] [2021-03-24 13:40:38,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:40:38,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:38,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:40:38,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:40:38,191 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:40:38,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1125 places, 1284 transitions, 39324 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:38,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:38,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:40:38,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:39,624 INFO L129 PetriNetUnfolder]: 702/1626 cut-off events. [2021-03-24 13:40:39,624 INFO L130 PetriNetUnfolder]: For 386421/386421 co-relation queries the response was YES. [2021-03-24 13:40:39,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30836 conditions, 1626 events. 702/1626 cut-off events. For 386421/386421 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 12960 event pairs, 3 based on Foata normal form. 1/1627 useless extension candidates. Maximal degree in co-relation 30245. Up to 1440 conditions per place. [2021-03-24 13:40:39,676 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1234 selfloop transitions, 54 changer transitions 7/1299 dead transitions. [2021-03-24 13:40:39,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1134 places, 1299 transitions, 43882 flow [2021-03-24 13:40:39,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:40:39,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:40:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:40:39,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:40:39,677 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:40:39,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:40:39,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:39,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:40:39,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:39,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:39,678 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:39,678 INFO L185 Difference]: Start difference. First operand has 1125 places, 1284 transitions, 39324 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:40:39,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1134 places, 1299 transitions, 43882 flow [2021-03-24 13:40:46,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1128 places, 1299 transitions, 42735 flow, removed 544 selfloop flow, removed 6 redundant places. [2021-03-24 13:40:46,623 INFO L241 Difference]: Finished difference. Result has 1132 places, 1284 transitions, 39295 flow [2021-03-24 13:40:46,624 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38183, PETRI_DIFFERENCE_MINUEND_PLACES=1119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=39295, PETRI_PLACES=1132, PETRI_TRANSITIONS=1284} [2021-03-24 13:40:46,624 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1101 predicate places. [2021-03-24 13:40:46,624 INFO L480 AbstractCegarLoop]: Abstraction has has 1132 places, 1284 transitions, 39295 flow [2021-03-24 13:40:46,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:46,624 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:46,624 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:46,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-03-24 13:40:46,625 INFO L428 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:40:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:46,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1796672252, now seen corresponding path program 190 times [2021-03-24 13:40:46,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:46,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190313302] [2021-03-24 13:40:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:46,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:46,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:46,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:46,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:46,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:46,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:46,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:46,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:46,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:46,678 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:40:46,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:40:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:46,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190313302] [2021-03-24 13:40:46,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:46,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:40:46,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746370702] [2021-03-24 13:40:46,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:40:46,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:46,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:40:46,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:40:46,682 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:40:46,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1132 places, 1284 transitions, 39295 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:46,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:46,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:40:46,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:48,102 INFO L129 PetriNetUnfolder]: 705/1633 cut-off events. [2021-03-24 13:40:48,103 INFO L130 PetriNetUnfolder]: For 410475/410475 co-relation queries the response was YES. [2021-03-24 13:40:48,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31792 conditions, 1633 events. 705/1633 cut-off events. For 410475/410475 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 13040 event pairs, 7 based on Foata normal form. 1/1634 useless extension candidates. Maximal degree in co-relation 31197. Up to 1435 conditions per place. [2021-03-24 13:40:48,156 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1222 selfloop transitions, 70 changer transitions 10/1306 dead transitions. [2021-03-24 13:40:48,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1140 places, 1306 transitions, 45690 flow [2021-03-24 13:40:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:40:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:40:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2021-03-24 13:40:48,157 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2021-03-24 13:40:48,157 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 276 transitions. [2021-03-24 13:40:48,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 276 transitions. [2021-03-24 13:40:48,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:48,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 276 transitions. [2021-03-24 13:40:48,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 9 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:48,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:48,158 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:48,158 INFO L185 Difference]: Start difference. First operand has 1132 places, 1284 transitions, 39295 flow. Second operand 9 states and 276 transitions. [2021-03-24 13:40:48,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1140 places, 1306 transitions, 45690 flow [2021-03-24 13:40:55,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1128 places, 1306 transitions, 43790 flow, removed 899 selfloop flow, removed 12 redundant places. [2021-03-24 13:40:55,482 INFO L241 Difference]: Finished difference. Result has 1133 places, 1288 transitions, 39935 flow [2021-03-24 13:40:55,483 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38293, PETRI_DIFFERENCE_MINUEND_PLACES=1120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39935, PETRI_PLACES=1133, PETRI_TRANSITIONS=1288} [2021-03-24 13:40:55,483 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1102 predicate places. [2021-03-24 13:40:55,483 INFO L480 AbstractCegarLoop]: Abstraction has has 1133 places, 1288 transitions, 39935 flow [2021-03-24 13:40:55,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:55,483 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:40:55,483 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:40:55,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-03-24 13:40:55,483 INFO L428 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:40:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:40:55,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1586180686, now seen corresponding path program 191 times [2021-03-24 13:40:55,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:40:55,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507284185] [2021-03-24 13:40:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:40:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:40:55,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:55,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:55,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:55,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:55,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:55,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:55,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:55,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:55,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:55,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:40:55,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:55,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:40:55,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:55,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:40:55,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:40:55,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:40:55,549 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:40:55,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:40:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:40:55,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507284185] [2021-03-24 13:40:55,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:40:55,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:40:55,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176624771] [2021-03-24 13:40:55,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:40:55,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:40:55,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:40:55,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:40:55,552 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:40:55,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1133 places, 1288 transitions, 39935 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:55,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:40:55,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:40:55,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:40:57,000 INFO L129 PetriNetUnfolder]: 706/1636 cut-off events. [2021-03-24 13:40:57,000 INFO L130 PetriNetUnfolder]: For 435888/435888 co-relation queries the response was YES. [2021-03-24 13:40:57,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31900 conditions, 1636 events. 706/1636 cut-off events. For 435888/435888 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 13022 event pairs, 1 based on Foata normal form. 1/1637 useless extension candidates. Maximal degree in co-relation 31304. Up to 1467 conditions per place. [2021-03-24 13:40:57,057 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1244 selfloop transitions, 54 changer transitions 4/1306 dead transitions. [2021-03-24 13:40:57,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1142 places, 1306 transitions, 45775 flow [2021-03-24 13:40:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:40:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:40:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2021-03-24 13:40:57,058 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5826923076923077 [2021-03-24 13:40:57,058 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2021-03-24 13:40:57,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2021-03-24 13:40:57,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:40:57,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2021-03-24 13:40:57,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:57,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:57,059 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:40:57,059 INFO L185 Difference]: Start difference. First operand has 1133 places, 1288 transitions, 39935 flow. Second operand 10 states and 303 transitions. [2021-03-24 13:40:57,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1142 places, 1306 transitions, 45775 flow [2021-03-24 13:41:04,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1134 places, 1306 transitions, 44612 flow, removed 534 selfloop flow, removed 8 redundant places. [2021-03-24 13:41:04,211 INFO L241 Difference]: Finished difference. Result has 1137 places, 1296 transitions, 41049 flow [2021-03-24 13:41:04,212 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=38776, PETRI_DIFFERENCE_MINUEND_PLACES=1125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=41049, PETRI_PLACES=1137, PETRI_TRANSITIONS=1296} [2021-03-24 13:41:04,212 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1106 predicate places. [2021-03-24 13:41:04,212 INFO L480 AbstractCegarLoop]: Abstraction has has 1137 places, 1296 transitions, 41049 flow [2021-03-24 13:41:04,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:04,212 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:04,212 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:04,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-03-24 13:41:04,212 INFO L428 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:41:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:04,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2077416038, now seen corresponding path program 192 times [2021-03-24 13:41:04,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:04,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804435232] [2021-03-24 13:41:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:04,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:04,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:04,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:04,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:04,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:04,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:04,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:04,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:04,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:04,267 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:41:04,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:41:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:04,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804435232] [2021-03-24 13:41:04,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:04,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:04,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404068851] [2021-03-24 13:41:04,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:41:04,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:04,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:41:04,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:41:04,270 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:41:04,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1137 places, 1296 transitions, 41049 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:04,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:04,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:41:04,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:05,676 INFO L129 PetriNetUnfolder]: 708/1646 cut-off events. [2021-03-24 13:41:05,676 INFO L130 PetriNetUnfolder]: For 447558/447558 co-relation queries the response was YES. [2021-03-24 13:41:05,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32274 conditions, 1646 events. 708/1646 cut-off events. For 447558/447558 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 13194 event pairs, 8 based on Foata normal form. 1/1647 useless extension candidates. Maximal degree in co-relation 31680. Up to 1363 conditions per place. [2021-03-24 13:41:05,734 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1198 selfloop transitions, 98 changer transitions 16/1316 dead transitions. [2021-03-24 13:41:05,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1145 places, 1316 transitions, 46495 flow [2021-03-24 13:41:05,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:41:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:41:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2021-03-24 13:41:05,735 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2021-03-24 13:41:05,735 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 278 transitions. [2021-03-24 13:41:05,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 278 transitions. [2021-03-24 13:41:05,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:05,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 278 transitions. [2021-03-24 13:41:05,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 9 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:05,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:05,736 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:05,736 INFO L185 Difference]: Start difference. First operand has 1137 places, 1296 transitions, 41049 flow. Second operand 9 states and 278 transitions. [2021-03-24 13:41:05,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1145 places, 1316 transitions, 46495 flow [2021-03-24 13:41:12,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1140 places, 1316 transitions, 44645 flow, removed 905 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:12,711 INFO L241 Difference]: Finished difference. Result has 1147 places, 1290 transitions, 39797 flow [2021-03-24 13:41:12,711 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=39199, PETRI_DIFFERENCE_MINUEND_PLACES=1132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39797, PETRI_PLACES=1147, PETRI_TRANSITIONS=1290} [2021-03-24 13:41:12,712 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1116 predicate places. [2021-03-24 13:41:12,712 INFO L480 AbstractCegarLoop]: Abstraction has has 1147 places, 1290 transitions, 39797 flow [2021-03-24 13:41:12,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:12,712 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:12,712 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:12,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-03-24 13:41:12,712 INFO L428 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:41:12,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:12,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1373176410, now seen corresponding path program 193 times [2021-03-24 13:41:12,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:12,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447713841] [2021-03-24 13:41:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:12,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:12,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:12,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:12,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:12,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:41:12,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:12,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:12,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:12,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:12,779 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:41:12,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:41:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:12,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447713841] [2021-03-24 13:41:12,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:12,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:41:12,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951532774] [2021-03-24 13:41:12,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:41:12,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:12,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:41:12,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:41:12,782 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:41:12,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1147 places, 1290 transitions, 39797 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:12,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:12,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:41:12,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:14,213 INFO L129 PetriNetUnfolder]: 703/1636 cut-off events. [2021-03-24 13:41:14,213 INFO L130 PetriNetUnfolder]: For 406245/406245 co-relation queries the response was YES. [2021-03-24 13:41:14,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31432 conditions, 1636 events. 703/1636 cut-off events. For 406245/406245 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 13037 event pairs, 3 based on Foata normal form. 1/1637 useless extension candidates. Maximal degree in co-relation 30831. Up to 1430 conditions per place. [2021-03-24 13:41:14,272 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1238 selfloop transitions, 56 changer transitions 8/1306 dead transitions. [2021-03-24 13:41:14,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1156 places, 1306 transitions, 44457 flow [2021-03-24 13:41:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:41:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:41:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 306 transitions. [2021-03-24 13:41:14,273 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5884615384615385 [2021-03-24 13:41:14,273 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 306 transitions. [2021-03-24 13:41:14,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 306 transitions. [2021-03-24 13:41:14,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:14,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 306 transitions. [2021-03-24 13:41:14,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.6) internal successors, (306), 10 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:14,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:14,274 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:14,274 INFO L185 Difference]: Start difference. First operand has 1147 places, 1290 transitions, 39797 flow. Second operand 10 states and 306 transitions. [2021-03-24 13:41:14,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1156 places, 1306 transitions, 44457 flow [2021-03-24 13:41:21,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1144 places, 1306 transitions, 43695 flow, removed 263 selfloop flow, removed 12 redundant places. [2021-03-24 13:41:21,416 INFO L241 Difference]: Finished difference. Result has 1148 places, 1289 transitions, 40163 flow [2021-03-24 13:41:21,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=39047, PETRI_DIFFERENCE_MINUEND_PLACES=1135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=40163, PETRI_PLACES=1148, PETRI_TRANSITIONS=1289} [2021-03-24 13:41:21,417 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1117 predicate places. [2021-03-24 13:41:21,417 INFO L480 AbstractCegarLoop]: Abstraction has has 1148 places, 1289 transitions, 40163 flow [2021-03-24 13:41:21,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:21,417 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:21,417 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:21,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-03-24 13:41:21,417 INFO L428 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:41:21,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:21,417 INFO L82 PathProgramCache]: Analyzing trace with hash 333869022, now seen corresponding path program 194 times [2021-03-24 13:41:21,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:21,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91328363] [2021-03-24 13:41:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:21,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:21,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:21,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:21,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:21,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:21,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:21,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:21,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:21,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:21,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:41:21,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:21,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:21,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:21,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:21,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:21,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:21,490 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:41:21,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:41:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:21,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91328363] [2021-03-24 13:41:21,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:21,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:21,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669870006] [2021-03-24 13:41:21,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:41:21,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:21,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:41:21,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:41:21,493 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:41:21,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1148 places, 1289 transitions, 40163 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:21,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:21,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:41:21,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:22,902 INFO L129 PetriNetUnfolder]: 704/1638 cut-off events. [2021-03-24 13:41:22,902 INFO L130 PetriNetUnfolder]: For 402346/402346 co-relation queries the response was YES. [2021-03-24 13:41:22,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31388 conditions, 1638 events. 704/1638 cut-off events. For 402346/402346 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 13053 event pairs, 0 based on Foata normal form. 1/1639 useless extension candidates. Maximal degree in co-relation 30787. Up to 1455 conditions per place. [2021-03-24 13:41:22,962 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1223 selfloop transitions, 75 changer transitions 3/1305 dead transitions. [2021-03-24 13:41:22,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1155 places, 1305 transitions, 44461 flow [2021-03-24 13:41:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:41:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:41:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 274 transitions. [2021-03-24 13:41:22,963 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5854700854700855 [2021-03-24 13:41:22,963 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 274 transitions. [2021-03-24 13:41:22,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 274 transitions. [2021-03-24 13:41:22,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:22,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 274 transitions. [2021-03-24 13:41:22,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.444444444444443) internal successors, (274), 9 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:22,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:22,964 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:22,964 INFO L185 Difference]: Start difference. First operand has 1148 places, 1289 transitions, 40163 flow. Second operand 9 states and 274 transitions. [2021-03-24 13:41:22,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1155 places, 1305 transitions, 44461 flow [2021-03-24 13:41:30,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1150 places, 1305 transitions, 43416 flow, removed 501 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:30,375 INFO L241 Difference]: Finished difference. Result has 1155 places, 1296 transitions, 40213 flow [2021-03-24 13:41:30,376 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=39118, PETRI_DIFFERENCE_MINUEND_PLACES=1142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40213, PETRI_PLACES=1155, PETRI_TRANSITIONS=1296} [2021-03-24 13:41:30,376 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1124 predicate places. [2021-03-24 13:41:30,376 INFO L480 AbstractCegarLoop]: Abstraction has has 1155 places, 1296 transitions, 40213 flow [2021-03-24 13:41:30,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:30,376 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:30,376 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:30,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-03-24 13:41:30,376 INFO L428 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:41:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1893265992, now seen corresponding path program 195 times [2021-03-24 13:41:30,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:30,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973683907] [2021-03-24 13:41:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:30,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:30,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:30,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:30,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:30,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:30,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:30,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:30,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:30,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:30,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:41:30,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:41:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:30,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973683907] [2021-03-24 13:41:30,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:30,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 13:41:30,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676483524] [2021-03-24 13:41:30,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 13:41:30,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:30,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 13:41:30,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-24 13:41:30,426 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:41:30,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1155 places, 1296 transitions, 40213 flow. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:30,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:30,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:41:30,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:31,786 INFO L129 PetriNetUnfolder]: 706/1638 cut-off events. [2021-03-24 13:41:31,786 INFO L130 PetriNetUnfolder]: For 415055/415055 co-relation queries the response was YES. [2021-03-24 13:41:31,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31895 conditions, 1638 events. 706/1638 cut-off events. For 415055/415055 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 13066 event pairs, 4 based on Foata normal form. 1/1639 useless extension candidates. Maximal degree in co-relation 31291. Up to 1444 conditions per place. [2021-03-24 13:41:31,854 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1236 selfloop transitions, 65 changer transitions 8/1313 dead transitions. [2021-03-24 13:41:31,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1162 places, 1313 transitions, 45465 flow [2021-03-24 13:41:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 13:41:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 13:41:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2021-03-24 13:41:31,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.59375 [2021-03-24 13:41:31,855 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 247 transitions. [2021-03-24 13:41:31,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 247 transitions. [2021-03-24 13:41:31,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:31,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 247 transitions. [2021-03-24 13:41:31,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 30.875) internal successors, (247), 8 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:31,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:31,855 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:31,855 INFO L185 Difference]: Start difference. First operand has 1155 places, 1296 transitions, 40213 flow. Second operand 8 states and 247 transitions. [2021-03-24 13:41:31,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1162 places, 1313 transitions, 45465 flow [2021-03-24 13:41:38,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1157 places, 1313 transitions, 44930 flow, removed 233 selfloop flow, removed 5 redundant places. [2021-03-24 13:41:38,828 INFO L241 Difference]: Finished difference. Result has 1162 places, 1297 transitions, 41236 flow [2021-03-24 13:41:38,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=39680, PETRI_DIFFERENCE_MINUEND_PLACES=1150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41236, PETRI_PLACES=1162, PETRI_TRANSITIONS=1297} [2021-03-24 13:41:38,829 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1131 predicate places. [2021-03-24 13:41:38,829 INFO L480 AbstractCegarLoop]: Abstraction has has 1162 places, 1297 transitions, 41236 flow [2021-03-24 13:41:38,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 8 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:38,829 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:38,829 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:38,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-03-24 13:41:38,829 INFO L428 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:41:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2018421618, now seen corresponding path program 196 times [2021-03-24 13:41:38,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:38,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917852914] [2021-03-24 13:41:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:38,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:38,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:38,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:38,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:38,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:38,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:38,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:38,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:38,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:38,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:38,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:38,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:38,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:38,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:38,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:38,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:38,902 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:41:38,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:41:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:38,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917852914] [2021-03-24 13:41:38,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:38,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:41:38,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743474050] [2021-03-24 13:41:38,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:41:38,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:38,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:41:38,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:41:38,905 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:41:38,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1162 places, 1297 transitions, 41236 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:38,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:38,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:41:38,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:40,312 INFO L129 PetriNetUnfolder]: 707/1641 cut-off events. [2021-03-24 13:41:40,312 INFO L130 PetriNetUnfolder]: For 458033/458033 co-relation queries the response was YES. [2021-03-24 13:41:40,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32735 conditions, 1641 events. 707/1641 cut-off events. For 458033/458033 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 13149 event pairs, 0 based on Foata normal form. 1/1642 useless extension candidates. Maximal degree in co-relation 32127. Up to 1441 conditions per place. [2021-03-24 13:41:40,379 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1200 selfloop transitions, 103 changer transitions 7/1314 dead transitions. [2021-03-24 13:41:40,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1170 places, 1314 transitions, 46998 flow [2021-03-24 13:41:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:41:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:41:40,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 274 transitions. [2021-03-24 13:41:40,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5854700854700855 [2021-03-24 13:41:40,380 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 274 transitions. [2021-03-24 13:41:40,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 274 transitions. [2021-03-24 13:41:40,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:40,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 274 transitions. [2021-03-24 13:41:40,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.444444444444443) internal successors, (274), 9 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:40,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:40,381 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:40,381 INFO L185 Difference]: Start difference. First operand has 1162 places, 1297 transitions, 41236 flow. Second operand 9 states and 274 transitions. [2021-03-24 13:41:40,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1170 places, 1314 transitions, 46998 flow [2021-03-24 13:41:48,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1167 places, 1314 transitions, 45801 flow, removed 583 selfloop flow, removed 3 redundant places. [2021-03-24 13:41:48,118 INFO L241 Difference]: Finished difference. Result has 1171 places, 1301 transitions, 41480 flow [2021-03-24 13:41:48,118 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=40041, PETRI_DIFFERENCE_MINUEND_PLACES=1159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41480, PETRI_PLACES=1171, PETRI_TRANSITIONS=1301} [2021-03-24 13:41:48,119 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1140 predicate places. [2021-03-24 13:41:48,119 INFO L480 AbstractCegarLoop]: Abstraction has has 1171 places, 1301 transitions, 41480 flow [2021-03-24 13:41:48,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:48,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:48,119 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:48,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-03-24 13:41:48,119 INFO L428 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:41:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:48,119 INFO L82 PathProgramCache]: Analyzing trace with hash -525600154, now seen corresponding path program 197 times [2021-03-24 13:41:48,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:48,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527567820] [2021-03-24 13:41:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:48,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:48,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:48,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:48,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:48,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:48,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:48,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:48,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:48,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:48,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:41:48,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:48,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:48,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:48,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:48,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:48,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:48,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:41:48,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:41:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:48,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527567820] [2021-03-24 13:41:48,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:48,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:41:48,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567230365] [2021-03-24 13:41:48,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:41:48,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:48,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:41:48,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:41:48,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:41:48,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1171 places, 1301 transitions, 41480 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:48,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:48,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:41:48,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:49,624 INFO L129 PetriNetUnfolder]: 704/1641 cut-off events. [2021-03-24 13:41:49,624 INFO L130 PetriNetUnfolder]: For 410917/410917 co-relation queries the response was YES. [2021-03-24 13:41:49,677 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31981 conditions, 1641 events. 704/1641 cut-off events. For 410917/410917 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 13110 event pairs, 1 based on Foata normal form. 1/1642 useless extension candidates. Maximal degree in co-relation 31369. Up to 1425 conditions per place. [2021-03-24 13:41:49,687 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1162 selfloop transitions, 138 changer transitions 8/1312 dead transitions. [2021-03-24 13:41:49,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1180 places, 1312 transitions, 45412 flow [2021-03-24 13:41:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:41:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:41:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2021-03-24 13:41:49,688 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5826923076923077 [2021-03-24 13:41:49,688 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2021-03-24 13:41:49,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2021-03-24 13:41:49,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:49,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2021-03-24 13:41:49,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:49,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:49,688 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:49,688 INFO L185 Difference]: Start difference. First operand has 1171 places, 1301 transitions, 41480 flow. Second operand 10 states and 303 transitions. [2021-03-24 13:41:49,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1180 places, 1312 transitions, 45412 flow [2021-03-24 13:41:57,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1178 places, 1312 transitions, 44507 flow, removed 432 selfloop flow, removed 2 redundant places. [2021-03-24 13:41:57,532 INFO L241 Difference]: Finished difference. Result has 1182 places, 1298 transitions, 41256 flow [2021-03-24 13:41:57,533 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=40575, PETRI_DIFFERENCE_MINUEND_PLACES=1169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=41256, PETRI_PLACES=1182, PETRI_TRANSITIONS=1298} [2021-03-24 13:41:57,533 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1151 predicate places. [2021-03-24 13:41:57,533 INFO L480 AbstractCegarLoop]: Abstraction has has 1182 places, 1298 transitions, 41256 flow [2021-03-24 13:41:57,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:57,533 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:41:57,533 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:41:57,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-03-24 13:41:57,533 INFO L428 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:41:57,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:41:57,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1578122626, now seen corresponding path program 198 times [2021-03-24 13:41:57,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:41:57,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853322655] [2021-03-24 13:41:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:41:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:41:57,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:57,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:57,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:57,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:57,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:57,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:57,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:57,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:57,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:57,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:41:57,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:57,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:41:57,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:57,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:41:57,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:41:57,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:41:57,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:41:57,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:41:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:41:57,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853322655] [2021-03-24 13:41:57,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:41:57,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:41:57,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637840868] [2021-03-24 13:41:57,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:41:57,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:41:57,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:41:57,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:41:57,610 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:41:57,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1182 places, 1298 transitions, 41256 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:57,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:41:57,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:41:57,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:41:59,070 INFO L129 PetriNetUnfolder]: 705/1638 cut-off events. [2021-03-24 13:41:59,070 INFO L130 PetriNetUnfolder]: For 440437/440437 co-relation queries the response was YES. [2021-03-24 13:41:59,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32587 conditions, 1638 events. 705/1638 cut-off events. For 440437/440437 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 13125 event pairs, 4 based on Foata normal form. 1/1639 useless extension candidates. Maximal degree in co-relation 32056. Up to 1449 conditions per place. [2021-03-24 13:41:59,134 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1250 selfloop transitions, 58 changer transitions 4/1316 dead transitions. [2021-03-24 13:41:59,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1190 places, 1316 transitions, 46572 flow [2021-03-24 13:41:59,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:41:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:41:59,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:41:59,135 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:41:59,135 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:41:59,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:41:59,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:41:59,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:41:59,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:59,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:59,136 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:41:59,136 INFO L185 Difference]: Start difference. First operand has 1182 places, 1298 transitions, 41256 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:41:59,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1190 places, 1316 transitions, 46572 flow [2021-03-24 13:42:07,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1174 places, 1316 transitions, 46010 flow, removed 107 selfloop flow, removed 16 redundant places. [2021-03-24 13:42:07,905 INFO L241 Difference]: Finished difference. Result has 1179 places, 1303 transitions, 42362 flow [2021-03-24 13:42:07,906 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=40702, PETRI_DIFFERENCE_MINUEND_PLACES=1165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=42362, PETRI_PLACES=1179, PETRI_TRANSITIONS=1303} [2021-03-24 13:42:07,906 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1148 predicate places. [2021-03-24 13:42:07,906 INFO L480 AbstractCegarLoop]: Abstraction has has 1179 places, 1303 transitions, 42362 flow [2021-03-24 13:42:07,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,906 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:07,906 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:07,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-03-24 13:42:07,906 INFO L428 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:42:07,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:07,906 INFO L82 PathProgramCache]: Analyzing trace with hash 569348838, now seen corresponding path program 199 times [2021-03-24 13:42:07,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:07,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963405235] [2021-03-24 13:42:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:07,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:07,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:07,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:07,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:07,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:42:07,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:07,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:07,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:07,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:07,977 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:42:07,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:42:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:07,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963405235] [2021-03-24 13:42:07,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:07,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:07,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303768855] [2021-03-24 13:42:07,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:42:07,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:07,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:42:07,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:42:07,980 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:42:07,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1179 places, 1303 transitions, 42362 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:07,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:07,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:42:07,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:09,494 INFO L129 PetriNetUnfolder]: 709/1653 cut-off events. [2021-03-24 13:42:09,494 INFO L130 PetriNetUnfolder]: For 493249/493249 co-relation queries the response was YES. [2021-03-24 13:42:09,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33635 conditions, 1653 events. 709/1653 cut-off events. For 493249/493249 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 13245 event pairs, 0 based on Foata normal form. 1/1654 useless extension candidates. Maximal degree in co-relation 33018. Up to 1467 conditions per place. [2021-03-24 13:42:09,559 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1236 selfloop transitions, 78 changer transitions 4/1322 dead transitions. [2021-03-24 13:42:09,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1188 places, 1322 transitions, 48536 flow [2021-03-24 13:42:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:42:09,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:42:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2021-03-24 13:42:09,560 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5826923076923077 [2021-03-24 13:42:09,560 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 303 transitions. [2021-03-24 13:42:09,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 303 transitions. [2021-03-24 13:42:09,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:09,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 303 transitions. [2021-03-24 13:42:09,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.3) internal successors, (303), 10 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,561 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:09,561 INFO L185 Difference]: Start difference. First operand has 1179 places, 1303 transitions, 42362 flow. Second operand 10 states and 303 transitions. [2021-03-24 13:42:09,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1188 places, 1322 transitions, 48536 flow [2021-03-24 13:42:18,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1183 places, 1322 transitions, 47256 flow, removed 615 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:18,096 INFO L241 Difference]: Finished difference. Result has 1186 places, 1312 transitions, 43661 flow [2021-03-24 13:42:18,097 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=41084, PETRI_DIFFERENCE_MINUEND_PLACES=1174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=43661, PETRI_PLACES=1186, PETRI_TRANSITIONS=1312} [2021-03-24 13:42:18,097 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1155 predicate places. [2021-03-24 13:42:18,097 INFO L480 AbstractCegarLoop]: Abstraction has has 1186 places, 1312 transitions, 43661 flow [2021-03-24 13:42:18,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:18,097 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:18,097 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:18,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-03-24 13:42:18,098 INFO L428 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:42:18,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:18,098 INFO L82 PathProgramCache]: Analyzing trace with hash -131719782, now seen corresponding path program 200 times [2021-03-24 13:42:18,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:18,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780782198] [2021-03-24 13:42:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:18,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:18,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:18,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:18,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:18,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:18,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:18,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:18,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:18,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:18,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:42:18,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:42:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:18,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780782198] [2021-03-24 13:42:18,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:18,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:18,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913403898] [2021-03-24 13:42:18,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:42:18,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:18,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:42:18,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:42:18,165 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:42:18,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1186 places, 1312 transitions, 43661 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:18,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:18,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:42:18,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:19,718 INFO L129 PetriNetUnfolder]: 711/1661 cut-off events. [2021-03-24 13:42:19,718 INFO L130 PetriNetUnfolder]: For 496739/496739 co-relation queries the response was YES. [2021-03-24 13:42:19,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34024 conditions, 1661 events. 711/1661 cut-off events. For 496739/496739 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 13348 event pairs, 3 based on Foata normal form. 1/1662 useless extension candidates. Maximal degree in co-relation 33405. Up to 1403 conditions per place. [2021-03-24 13:42:19,783 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1162 selfloop transitions, 142 changer transitions 22/1330 dead transitions. [2021-03-24 13:42:19,783 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1195 places, 1330 transitions, 49299 flow [2021-03-24 13:42:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:42:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:42:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:42:19,784 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:42:19,784 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:42:19,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:42:19,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:19,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:42:19,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,785 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:19,785 INFO L185 Difference]: Start difference. First operand has 1186 places, 1312 transitions, 43661 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:42:19,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1195 places, 1330 transitions, 49299 flow [2021-03-24 13:42:28,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1190 places, 1330 transitions, 47345 flow, removed 953 selfloop flow, removed 5 redundant places. [2021-03-24 13:42:28,237 INFO L241 Difference]: Finished difference. Result has 1196 places, 1300 transitions, 42574 flow [2021-03-24 13:42:28,237 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=41707, PETRI_DIFFERENCE_MINUEND_PLACES=1181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=42574, PETRI_PLACES=1196, PETRI_TRANSITIONS=1300} [2021-03-24 13:42:28,238 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1165 predicate places. [2021-03-24 13:42:28,238 INFO L480 AbstractCegarLoop]: Abstraction has has 1196 places, 1300 transitions, 42574 flow [2021-03-24 13:42:28,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:28,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:28,238 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:28,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-03-24 13:42:28,238 INFO L428 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:42:28,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:28,238 INFO L82 PathProgramCache]: Analyzing trace with hash -68754722, now seen corresponding path program 201 times [2021-03-24 13:42:28,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:28,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112880971] [2021-03-24 13:42:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:28,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:28,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:28,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:28,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:28,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:28,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:28,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:28,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:28,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:28,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:42:28,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:42:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:28,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112880971] [2021-03-24 13:42:28,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:28,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:42:28,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988718856] [2021-03-24 13:42:28,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:42:28,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:28,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:42:28,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:42:28,305 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:42:28,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1196 places, 1300 transitions, 42574 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:28,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:28,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:42:28,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:29,877 INFO L129 PetriNetUnfolder]: 704/1656 cut-off events. [2021-03-24 13:42:29,877 INFO L130 PetriNetUnfolder]: For 507626/507626 co-relation queries the response was YES. [2021-03-24 13:42:29,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33887 conditions, 1656 events. 704/1656 cut-off events. For 507626/507626 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 13377 event pairs, 7 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 33262. Up to 1345 conditions per place. [2021-03-24 13:42:29,929 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1170 selfloop transitions, 125 changer transitions 24/1323 dead transitions. [2021-03-24 13:42:29,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1205 places, 1323 transitions, 48857 flow [2021-03-24 13:42:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:42:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:42:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2021-03-24 13:42:29,930 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2021-03-24 13:42:29,930 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 307 transitions. [2021-03-24 13:42:29,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 307 transitions. [2021-03-24 13:42:29,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:29,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 307 transitions. [2021-03-24 13:42:29,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.7) internal successors, (307), 10 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,931 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:29,931 INFO L185 Difference]: Start difference. First operand has 1196 places, 1300 transitions, 42574 flow. Second operand 10 states and 307 transitions. [2021-03-24 13:42:29,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1205 places, 1323 transitions, 48857 flow [2021-03-24 13:42:38,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1186 places, 1323 transitions, 47792 flow, removed 354 selfloop flow, removed 19 redundant places. [2021-03-24 13:42:38,661 INFO L241 Difference]: Finished difference. Result has 1193 places, 1289 transitions, 42332 flow [2021-03-24 13:42:38,662 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=41541, PETRI_DIFFERENCE_MINUEND_PLACES=1177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=42332, PETRI_PLACES=1193, PETRI_TRANSITIONS=1289} [2021-03-24 13:42:38,662 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1162 predicate places. [2021-03-24 13:42:38,662 INFO L480 AbstractCegarLoop]: Abstraction has has 1193 places, 1289 transitions, 42332 flow [2021-03-24 13:42:38,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:38,662 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:38,662 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:38,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-03-24 13:42:38,662 INFO L428 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:42:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2058178202, now seen corresponding path program 202 times [2021-03-24 13:42:38,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:38,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214693148] [2021-03-24 13:42:38,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:38,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:38,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:38,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:38,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:38,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:38,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:38,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:38,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:38,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:38,717 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:42:38,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:42:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:38,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214693148] [2021-03-24 13:42:38,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:38,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:38,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986550751] [2021-03-24 13:42:38,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:38,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:38,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:38,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:38,720 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:42:38,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1193 places, 1289 transitions, 42332 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:38,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:38,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:42:38,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:40,184 INFO L129 PetriNetUnfolder]: 701/1645 cut-off events. [2021-03-24 13:42:40,184 INFO L130 PetriNetUnfolder]: For 490525/490525 co-relation queries the response was YES. [2021-03-24 13:42:40,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33691 conditions, 1645 events. 701/1645 cut-off events. For 490525/490525 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 13299 event pairs, 3 based on Foata normal form. 1/1646 useless extension candidates. Maximal degree in co-relation 33068. Up to 1422 conditions per place. [2021-03-24 13:42:40,244 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1224 selfloop transitions, 81 changer transitions 11/1320 dead transitions. [2021-03-24 13:42:40,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1201 places, 1320 transitions, 48486 flow [2021-03-24 13:42:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2021-03-24 13:42:40,245 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5918803418803419 [2021-03-24 13:42:40,245 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 277 transitions. [2021-03-24 13:42:40,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 277 transitions. [2021-03-24 13:42:40,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:40,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 277 transitions. [2021-03-24 13:42:40,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.77777777777778) internal successors, (277), 9 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:40,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:40,246 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:40,246 INFO L185 Difference]: Start difference. First operand has 1193 places, 1289 transitions, 42332 flow. Second operand 9 states and 277 transitions. [2021-03-24 13:42:40,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1201 places, 1320 transitions, 48486 flow [2021-03-24 13:42:49,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1183 places, 1320 transitions, 47432 flow, removed 389 selfloop flow, removed 18 redundant places. [2021-03-24 13:42:49,255 INFO L241 Difference]: Finished difference. Result has 1189 places, 1300 transitions, 43648 flow [2021-03-24 13:42:49,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=41290, PETRI_DIFFERENCE_MINUEND_PLACES=1175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=43648, PETRI_PLACES=1189, PETRI_TRANSITIONS=1300} [2021-03-24 13:42:49,256 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1158 predicate places. [2021-03-24 13:42:49,256 INFO L480 AbstractCegarLoop]: Abstraction has has 1189 places, 1300 transitions, 43648 flow [2021-03-24 13:42:49,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:49,256 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:42:49,256 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:42:49,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-03-24 13:42:49,256 INFO L428 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:42:49,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:42:49,256 INFO L82 PathProgramCache]: Analyzing trace with hash -776978108, now seen corresponding path program 203 times [2021-03-24 13:42:49,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:42:49,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918736966] [2021-03-24 13:42:49,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:42:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:42:49,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:49,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:49,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:49,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:49,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:49,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:49,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:49,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:42:49,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:49,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:49,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:49,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:49,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:49,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:42:49,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:42:49,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:42:49,310 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:42:49,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:42:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:42:49,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918736966] [2021-03-24 13:42:49,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:42:49,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 13:42:49,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804626271] [2021-03-24 13:42:49,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 13:42:49,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:42:49,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 13:42:49,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 13:42:49,313 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:42:49,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1189 places, 1300 transitions, 43648 flow. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:49,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:42:49,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:42:49,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:42:50,781 INFO L129 PetriNetUnfolder]: 701/1646 cut-off events. [2021-03-24 13:42:50,781 INFO L130 PetriNetUnfolder]: For 513105/513105 co-relation queries the response was YES. [2021-03-24 13:42:50,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34213 conditions, 1646 events. 701/1646 cut-off events. For 513105/513105 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 13278 event pairs, 0 based on Foata normal form. 1/1647 useless extension candidates. Maximal degree in co-relation 33592. Up to 1469 conditions per place. [2021-03-24 13:42:50,845 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1251 selfloop transitions, 57 changer transitions 5/1317 dead transitions. [2021-03-24 13:42:50,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1197 places, 1317 transitions, 49530 flow [2021-03-24 13:42:50,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 13:42:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 13:42:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 274 transitions. [2021-03-24 13:42:50,846 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5854700854700855 [2021-03-24 13:42:50,846 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 274 transitions. [2021-03-24 13:42:50,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 274 transitions. [2021-03-24 13:42:50,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:42:50,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 274 transitions. [2021-03-24 13:42:50,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 30.444444444444443) internal successors, (274), 9 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:50,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:50,847 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 52.0) internal successors, (520), 10 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:42:50,847 INFO L185 Difference]: Start difference. First operand has 1189 places, 1300 transitions, 43648 flow. Second operand 9 states and 274 transitions. [2021-03-24 13:42:50,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1197 places, 1317 transitions, 49530 flow [2021-03-24 13:42:59,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1193 places, 1317 transitions, 48242 flow, removed 611 selfloop flow, removed 4 redundant places. [2021-03-24 13:43:00,021 INFO L241 Difference]: Finished difference. Result has 1198 places, 1306 transitions, 44312 flow [2021-03-24 13:43:00,022 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=42374, PETRI_DIFFERENCE_MINUEND_PLACES=1185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44312, PETRI_PLACES=1198, PETRI_TRANSITIONS=1306} [2021-03-24 13:43:00,022 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1167 predicate places. [2021-03-24 13:43:00,022 INFO L480 AbstractCegarLoop]: Abstraction has has 1198 places, 1306 transitions, 44312 flow [2021-03-24 13:43:00,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:00,022 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:00,022 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:00,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-03-24 13:43:00,022 INFO L428 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:43:00,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash 941365598, now seen corresponding path program 204 times [2021-03-24 13:43:00,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:00,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315252471] [2021-03-24 13:43:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:00,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:00,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:00,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:00,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:00,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:00,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:43:00,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:00,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:43:00,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:00,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:43:00,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:00,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:00,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:00,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:43:00,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:00,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:00,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:43:00,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:43:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:00,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315252471] [2021-03-24 13:43:00,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:00,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:00,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454480166] [2021-03-24 13:43:00,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:43:00,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:00,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:43:00,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:43:00,089 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:43:00,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1198 places, 1306 transitions, 44312 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:00,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:00,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:43:00,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:43:01,705 INFO L129 PetriNetUnfolder]: 702/1655 cut-off events. [2021-03-24 13:43:01,705 INFO L130 PetriNetUnfolder]: For 513119/513119 co-relation queries the response was YES. [2021-03-24 13:43:01,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34479 conditions, 1655 events. 702/1655 cut-off events. For 513119/513119 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 13408 event pairs, 2 based on Foata normal form. 1/1656 useless extension candidates. Maximal degree in co-relation 33853. Up to 1442 conditions per place. [2021-03-24 13:43:01,772 INFO L132 encePairwiseOnDemand]: 42/52 looper letters, 1220 selfloop transitions, 90 changer transitions 10/1324 dead transitions. [2021-03-24 13:43:01,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1207 places, 1324 transitions, 49974 flow [2021-03-24 13:43:01,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:43:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 13:43:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2021-03-24 13:43:01,773 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2021-03-24 13:43:01,773 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 305 transitions. [2021-03-24 13:43:01,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 305 transitions. [2021-03-24 13:43:01,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:43:01,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 305 transitions. [2021-03-24 13:43:01,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 30.5) internal successors, (305), 10 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:01,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:01,774 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 52.0) internal successors, (572), 11 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:01,774 INFO L185 Difference]: Start difference. First operand has 1198 places, 1306 transitions, 44312 flow. Second operand 10 states and 305 transitions. [2021-03-24 13:43:01,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1207 places, 1324 transitions, 49974 flow [2021-03-24 13:43:11,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1203 places, 1324 transitions, 48605 flow, removed 665 selfloop flow, removed 4 redundant places. [2021-03-24 13:43:11,603 INFO L241 Difference]: Finished difference. Result has 1208 places, 1306 transitions, 44570 flow [2021-03-24 13:43:11,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=42943, PETRI_DIFFERENCE_MINUEND_PLACES=1194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=44570, PETRI_PLACES=1208, PETRI_TRANSITIONS=1306} [2021-03-24 13:43:11,604 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 1177 predicate places. [2021-03-24 13:43:11,604 INFO L480 AbstractCegarLoop]: Abstraction has has 1208 places, 1306 transitions, 44570 flow [2021-03-24 13:43:11,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:11,604 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:43:11,604 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:43:11,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-03-24 13:43:11,604 INFO L428 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:43:11,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:43:11,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1440116288, now seen corresponding path program 205 times [2021-03-24 13:43:11,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:43:11,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495055454] [2021-03-24 13:43:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:43:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:43:11,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:11,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:11,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:43:11,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:43:11,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 13:43:11,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:43:11,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 13:43:11,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:43:11,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:43:11,680 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-24 13:43:11,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 13:43:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:43:11,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495055454] [2021-03-24 13:43:11,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:43:11,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 13:43:11,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920067525] [2021-03-24 13:43:11,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 13:43:11,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:43:11,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 13:43:11,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-03-24 13:43:11,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 52 [2021-03-24 13:43:11,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1208 places, 1306 transitions, 44570 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:43:11,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:43:11,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 52 [2021-03-24 13:43:11,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-03-24 13:43:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 13:43:12,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-03-24 13:43:12,560 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-24 13:43:12,562 WARN L224 ceAbstractionStarter]: Timeout [2021-03-24 13:43:12,563 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:43:12 BasicIcfg [2021-03-24 13:43:12,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:43:12,563 INFO L168 Benchmark]: Toolchain (without parser) took 848342.55 ms. Allocated memory was 333.4 MB in the beginning and 1.8 GB in the end (delta: 1.4 GB). Free memory was 314.0 MB in the beginning and 872.2 MB in the end (delta: -558.2 MB). Peak memory consumption was 894.3 MB. Max. memory is 16.0 GB. [2021-03-24 13:43:12,563 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 333.4 MB. Free memory is still 314.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:43:12,563 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.25 ms. Allocated memory is still 333.4 MB. Free memory was 313.8 MB in the beginning and 312.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:43:12,563 INFO L168 Benchmark]: Boogie Preprocessor took 13.95 ms. Allocated memory is still 333.4 MB. Free memory was 312.3 MB in the beginning and 311.6 MB in the end (delta: 791.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:43:12,563 INFO L168 Benchmark]: RCFGBuilder took 179.88 ms. Allocated memory is still 333.4 MB. Free memory was 311.6 MB in the beginning and 302.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-24 13:43:12,563 INFO L168 Benchmark]: TraceAbstraction took 848120.15 ms. Allocated memory was 333.4 MB in the beginning and 1.8 GB in the end (delta: 1.4 GB). Free memory was 302.4 MB in the beginning and 872.2 MB in the end (delta: -569.8 MB). Peak memory consumption was 881.7 MB. Max. memory is 16.0 GB. [2021-03-24 13:43:12,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 333.4 MB. Free memory is still 314.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.25 ms. Allocated memory is still 333.4 MB. Free memory was 313.8 MB in the beginning and 312.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.95 ms. Allocated memory is still 333.4 MB. Free memory was 312.3 MB in the beginning and 311.6 MB in the end (delta: 791.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 179.88 ms. Allocated memory is still 333.4 MB. Free memory was 311.6 MB in the beginning and 302.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 848120.15 ms. Allocated memory was 333.4 MB in the beginning and 1.8 GB in the end (delta: 1.4 GB). Free memory was 302.4 MB in the beginning and 872.2 MB in the end (delta: -569.8 MB). Peak memory consumption was 881.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 219.2ms, 39 PlacesBefore, 31 PlacesAfterwards, 38 TransitionsBefore, 30 TransitionsAfterwards, 528 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 450 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 261, positive: 247, positive conditional: 0, positive unconditional: 247, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 215, positive: 203, positive conditional: 0, positive unconditional: 203, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 215, positive: 203, positive conditional: 0, positive unconditional: 203, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 261, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 215, unknown conditional: 0, unknown unconditional: 215] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 45). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (10states, 25/52 universal loopers) in iteration 208,while PetriNetUnfolder was constructing finite prefix that currently has 16927 conditions, 711 events (297/710 cut-off events. For 191940/191940 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 6205 event pairs, 2 based on Foata normal form. 0/983 useless extension candidates. Maximal degree in co-relation 16396. Up to 646 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 22.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 848022.1ms, OverallIterations: 208, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 832196.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 334.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3031 SDtfs, 1396 SDslu, 7988 SDs, 0 SdLazy, 59111 SolverSat, 1703 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20921.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1854 GetRequests, 143 SyntacticMatches, 205 SemanticMatches, 1506 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11021.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44839occurred in iteration=128, InterpolantAutomatonStates: 1912, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 83.2ms SsaConstructionTime, 320.7ms SatisfiabilityAnalysisTime, 14408.8ms InterpolantComputationTime, 3744 NumberOfCodeBlocks, 3744 NumberOfCodeBlocksAsserted, 208 NumberOfCheckSat, 3536 ConstructedInterpolants, 0 QuantifiedInterpolants, 28602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 208 InterpolantComputations, 208 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown