/usr/bin/java -Xmx8000000000 -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-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/sum_invariant.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 07:40:50,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 07:40:50,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 07:40:50,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 07:40:50,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 07:40:50,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 07:40:50,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 07:40:50,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 07:40:50,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 07:40:50,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 07:40:50,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 07:40:50,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 07:40:50,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 07:40:50,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 07:40:50,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 07:40:50,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 07:40:50,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 07:40:50,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 07:40:50,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 07:40:50,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 07:40:50,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 07:40:50,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 07:40:50,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 07:40:50,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 07:40:50,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 07:40:50,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 07:40:50,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 07:40:50,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 07:40:50,758 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-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 07:40:50,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 07:40:50,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 07:40:50,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 07:40:50,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 07:40:50,797 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 07:40:50,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 07:40:50,797 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 07:40:50,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 07:40:50,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 07:40:50,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 07:40:50,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 07:40:50,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 07:40:50,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 07:40:50,799 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 07:40:50,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 07:40:50,799 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 07:40:50,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 07:40:50,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 07:40:50,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 07:40:50,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 07:40:50,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 07:40:50,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 07:40:50,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 07:40:50,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 07:40:50,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 07:40:50,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 07:40:50,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 07:40:50,801 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 07:40:50,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 07:40:50,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 07:40:50,801 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 07:40:50,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 07:40:50,802 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 07:40:51,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 07:40:51,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 07:40:51,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 07:40:51,124 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 07:40:51,125 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 07:40:51,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-08-13 07:40:51,127 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-08-13 07:40:51,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 07:40:51,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 07:40:51,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 07:40:51,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 07:40:51,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 07:40:51,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/1) ... [2021-08-13 07:40:51,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/1) ... [2021-08-13 07:40:51,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 07:40:51,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 07:40:51,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 07:40:51,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 07:40:51,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/1) ... [2021-08-13 07:40:51,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/1) ... [2021-08-13 07:40:51,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/1) ... [2021-08-13 07:40:51,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/1) ... [2021-08-13 07:40:51,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/1) ... [2021-08-13 07:40:51,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/1) ... [2021-08-13 07:40:51,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/1) ... [2021-08-13 07:40:51,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 07:40:51,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 07:40:51,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 07:40:51,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 07:40:51,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (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 [2021-08-13 07:40:51,260 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 07:40:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 07:40:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 07:40:51,261 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-08-13 07:40:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-08-13 07:40:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-08-13 07:40:51,262 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 07:40:51,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 07:40:51,389 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 07:40:51,391 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:40:51 BoogieIcfgContainer [2021-08-13 07:40:51,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 07:40:51,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 07:40:51,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 07:40:51,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 07:40:51,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:40:51" (1/2) ... [2021-08-13 07:40:51,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@517b608a and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 07:40:51, skipping insertion in model container [2021-08-13 07:40:51,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:40:51" (2/2) ... [2021-08-13 07:40:51,400 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-08-13 07:40:51,409 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 07:40:51,410 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 07:40:51,411 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 07:40:51,445 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,446 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,446 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,447 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,448 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,450 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,451 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,451 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,451 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,452 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,453 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,454 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,455 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,456 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,456 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,457 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,457 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,458 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,458 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,458 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,458 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,459 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,459 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,463 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,482 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,489 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,491 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 07:40:51,531 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-08-13 07:40:51,564 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 07:40:51,598 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:40:51,598 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:40:51,598 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:40:51,598 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:40:51,598 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:40:51,599 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:40:51,599 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:40:51,599 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:40:51,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 156 flow [2021-08-13 07:40:51,675 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2021-08-13 07:40:51,676 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 07:40:51,686 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. [2021-08-13 07:40:51,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 156 flow [2021-08-13 07:40:51,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 136 flow [2021-08-13 07:40:51,729 INFO L129 PetriNetUnfolder]: 17/53 cut-off events. [2021-08-13 07:40:51,729 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 07:40:51,730 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:51,730 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:51,731 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:51,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:51,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1761666906, now seen corresponding path program 1 times [2021-08-13 07:40:51,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:51,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786705545] [2021-08-13 07:40:51,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:51,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:51,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:40:51,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:51,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:40:51,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:51,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:40:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:51,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:51,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786705545] [2021-08-13 07:40:51,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786705545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:51,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:51,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 07:40:51,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915566665] [2021-08-13 07:40:51,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:40:51,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:51,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:40:51,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:40:51,951 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 44 [2021-08-13 07:40:51,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:51,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:51,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 44 [2021-08-13 07:40:51,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:51,979 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-08-13 07:40:51,979 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-08-13 07:40:51,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 35 events. 5/35 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 7/42 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2021-08-13 07:40:51,980 INFO L132 encePairwiseOnDemand]: 40/44 looper letters, 1 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2021-08-13 07:40:51,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 110 flow [2021-08-13 07:40:51,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:40:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:40:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-08-13 07:40:51,990 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9242424242424242 [2021-08-13 07:40:51,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-08-13 07:40:51,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-08-13 07:40:51,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:51,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-08-13 07:40:51,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:51,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,001 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2021-08-13 07:40:52,001 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 110 flow [2021-08-13 07:40:52,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,001 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:52,001 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:52,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 07:40:52,002 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:52,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1414257378, now seen corresponding path program 1 times [2021-08-13 07:40:52,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:52,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943330811] [2021-08-13 07:40:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:52,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:52,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:52,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:52,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943330811] [2021-08-13 07:40:52,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943330811] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:52,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:52,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 07:40:52,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823095350] [2021-08-13 07:40:52,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:40:52,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:52,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:40:52,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:40:52,119 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:52,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 110 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:52,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:52,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:52,420 INFO L129 PetriNetUnfolder]: 908/1702 cut-off events. [2021-08-13 07:40:52,420 INFO L130 PetriNetUnfolder]: For 449/449 co-relation queries the response was YES. [2021-08-13 07:40:52,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3529 conditions, 1702 events. 908/1702 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10338 event pairs, 246 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 3344. Up to 710 conditions per place. [2021-08-13 07:40:52,437 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 41 selfloop transitions, 21 changer transitions 0/76 dead transitions. [2021-08-13 07:40:52,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 354 flow [2021-08-13 07:40:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:40:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:40:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2021-08-13 07:40:52,445 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-08-13 07:40:52,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 238 transitions. [2021-08-13 07:40:52,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 238 transitions. [2021-08-13 07:40:52,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:52,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 238 transitions. [2021-08-13 07:40:52,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,453 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,455 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2021-08-13 07:40:52,455 INFO L482 AbstractCegarLoop]: Abstraction has has 47 places, 76 transitions, 354 flow [2021-08-13 07:40:52,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,455 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:52,455 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:52,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 07:40:52,456 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:52,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:52,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1088069582, now seen corresponding path program 1 times [2021-08-13 07:40:52,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:52,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024634031] [2021-08-13 07:40:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:52,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:40:52,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 07:40:52,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 07:40:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:52,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:52,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024634031] [2021-08-13 07:40:52,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024634031] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:52,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:52,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 07:40:52,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606013239] [2021-08-13 07:40:52,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:40:52,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:52,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:40:52,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:40:52,513 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 44 [2021-08-13 07:40:52,513 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 76 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,513 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:52,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 44 [2021-08-13 07:40:52,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:52,626 INFO L129 PetriNetUnfolder]: 872/1602 cut-off events. [2021-08-13 07:40:52,627 INFO L130 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2021-08-13 07:40:52,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3347 conditions, 1602 events. 872/1602 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9344 event pairs, 246 based on Foata normal form. 64/1666 useless extension candidates. Maximal degree in co-relation 3233. Up to 710 conditions per place. [2021-08-13 07:40:52,639 INFO L132 encePairwiseOnDemand]: 41/44 looper letters, 1 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2021-08-13 07:40:52,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 344 flow [2021-08-13 07:40:52,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:40:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:40:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-08-13 07:40:52,641 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-08-13 07:40:52,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-08-13 07:40:52,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-08-13 07:40:52,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:52,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-08-13 07:40:52,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,643 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2021-08-13 07:40:52,643 INFO L482 AbstractCegarLoop]: Abstraction has has 49 places, 72 transitions, 344 flow [2021-08-13 07:40:52,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:52,644 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:52,644 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:52,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 07:40:52,644 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:52,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:52,646 INFO L82 PathProgramCache]: Analyzing trace with hash 263185920, now seen corresponding path program 2 times [2021-08-13 07:40:52,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:52,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283495185] [2021-08-13 07:40:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:52,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:52,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:52,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:52,768 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:52,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:52,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:52,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283495185] [2021-08-13 07:40:52,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283495185] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:52,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:52,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:40:52,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920854001] [2021-08-13 07:40:52,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:40:52,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:52,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:40:52,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:40:52,775 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:52,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 72 transitions, 344 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:52,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:52,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:52,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:53,075 INFO L129 PetriNetUnfolder]: 894/1679 cut-off events. [2021-08-13 07:40:53,077 INFO L130 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2021-08-13 07:40:53,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4873 conditions, 1679 events. 894/1679 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10053 event pairs, 247 based on Foata normal form. 1/1680 useless extension candidates. Maximal degree in co-relation 4733. Up to 756 conditions per place. [2021-08-13 07:40:53,094 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 51 selfloop transitions, 35 changer transitions 2/98 dead transitions. [2021-08-13 07:40:53,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 624 flow [2021-08-13 07:40:53,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:40:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:40:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 07:40:53,101 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 07:40:53,101 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 07:40:53,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 07:40:53,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:53,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 07:40:53,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:53,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:53,104 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:53,104 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2021-08-13 07:40:53,104 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 98 transitions, 624 flow [2021-08-13 07:40:53,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:53,105 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:53,105 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:53,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 07:40:53,106 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:53,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1249715524, now seen corresponding path program 3 times [2021-08-13 07:40:53,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:53,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475899487] [2021-08-13 07:40:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:53,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:53,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:53,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:53,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:53,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475899487] [2021-08-13 07:40:53,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475899487] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:53,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:53,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:40:53,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521565855] [2021-08-13 07:40:53,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:40:53,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:53,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:40:53,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:40:53,248 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:53,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 98 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:53,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:53,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:53,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:53,502 INFO L129 PetriNetUnfolder]: 916/1741 cut-off events. [2021-08-13 07:40:53,502 INFO L130 PetriNetUnfolder]: For 427/427 co-relation queries the response was YES. [2021-08-13 07:40:53,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6474 conditions, 1741 events. 916/1741 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10659 event pairs, 254 based on Foata normal form. 1/1742 useless extension candidates. Maximal degree in co-relation 6301. Up to 802 conditions per place. [2021-08-13 07:40:53,518 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 75 selfloop transitions, 37 changer transitions 2/124 dead transitions. [2021-08-13 07:40:53,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 1008 flow [2021-08-13 07:40:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:40:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:40:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 07:40:53,520 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 07:40:53,521 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 07:40:53,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 07:40:53,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:53,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 07:40:53,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:53,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:53,523 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:53,523 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2021-08-13 07:40:53,523 INFO L482 AbstractCegarLoop]: Abstraction has has 63 places, 124 transitions, 1008 flow [2021-08-13 07:40:53,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:53,523 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:53,523 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:53,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 07:40:53,524 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:53,524 INFO L82 PathProgramCache]: Analyzing trace with hash -466014492, now seen corresponding path program 4 times [2021-08-13 07:40:53,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:53,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879906994] [2021-08-13 07:40:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:53,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:53,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:53,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:53,639 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:53,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:53,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:53,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879906994] [2021-08-13 07:40:53,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879906994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:53,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:53,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:40:53,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296827241] [2021-08-13 07:40:53,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:40:53,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:53,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:40:53,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:40:53,653 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:53,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 124 transitions, 1008 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:53,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:53,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:53,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:53,939 INFO L129 PetriNetUnfolder]: 947/1865 cut-off events. [2021-08-13 07:40:53,940 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-08-13 07:40:53,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8300 conditions, 1865 events. 947/1865 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11961 event pairs, 251 based on Foata normal form. 1/1866 useless extension candidates. Maximal degree in co-relation 8086. Up to 858 conditions per place. [2021-08-13 07:40:53,961 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 106 selfloop transitions, 35 changer transitions 4/155 dead transitions. [2021-08-13 07:40:53,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 155 transitions, 1571 flow [2021-08-13 07:40:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:40:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:40:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2021-08-13 07:40:53,964 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-08-13 07:40:53,964 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 270 transitions. [2021-08-13 07:40:53,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 270 transitions. [2021-08-13 07:40:53,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:53,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 270 transitions. [2021-08-13 07:40:53,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.75) internal successors, (270), 8 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:53,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:53,966 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:53,966 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2021-08-13 07:40:53,966 INFO L482 AbstractCegarLoop]: Abstraction has has 70 places, 155 transitions, 1571 flow [2021-08-13 07:40:53,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:53,967 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:53,967 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:53,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 07:40:53,967 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:53,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:53,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1968692424, now seen corresponding path program 5 times [2021-08-13 07:40:53,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:53,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798075560] [2021-08-13 07:40:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:54,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:54,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:40:54,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:54,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,081 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:54,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:54,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:54,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798075560] [2021-08-13 07:40:54,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798075560] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:54,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:54,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:40:54,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148143109] [2021-08-13 07:40:54,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:40:54,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:54,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:40:54,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:40:54,089 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:54,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 155 transitions, 1571 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:54,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:54,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:54,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:54,466 INFO L129 PetriNetUnfolder]: 1068/2163 cut-off events. [2021-08-13 07:40:54,466 INFO L130 PetriNetUnfolder]: For 575/575 co-relation queries the response was YES. [2021-08-13 07:40:54,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11217 conditions, 2163 events. 1068/2163 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14765 event pairs, 178 based on Foata normal form. 1/2164 useless extension candidates. Maximal degree in co-relation 10951. Up to 1144 conditions per place. [2021-08-13 07:40:54,489 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 173 selfloop transitions, 55 changer transitions 9/247 dead transitions. [2021-08-13 07:40:54,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 247 transitions, 3000 flow [2021-08-13 07:40:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:40:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:40:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 07:40:54,491 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 07:40:54,491 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 07:40:54,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 07:40:54,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:54,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 07:40:54,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:54,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:54,493 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:54,493 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2021-08-13 07:40:54,493 INFO L482 AbstractCegarLoop]: Abstraction has has 78 places, 247 transitions, 3000 flow [2021-08-13 07:40:54,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:54,495 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:54,495 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:54,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 07:40:54,495 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:54,495 INFO L82 PathProgramCache]: Analyzing trace with hash -770218848, now seen corresponding path program 6 times [2021-08-13 07:40:54,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:54,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339845306] [2021-08-13 07:40:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:54,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:54,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:54,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:54,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:54,593 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:54,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:54,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:54,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339845306] [2021-08-13 07:40:54,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339845306] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:54,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:54,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:40:54,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451247810] [2021-08-13 07:40:54,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:40:54,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:54,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:40:54,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:40:54,598 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:54,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 247 transitions, 3000 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:54,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:54,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:54,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:54,961 INFO L129 PetriNetUnfolder]: 1080/2200 cut-off events. [2021-08-13 07:40:54,961 INFO L130 PetriNetUnfolder]: For 583/583 co-relation queries the response was YES. [2021-08-13 07:40:54,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13124 conditions, 2200 events. 1080/2200 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15157 event pairs, 178 based on Foata normal form. 1/2201 useless extension candidates. Maximal degree in co-relation 12855. Up to 1175 conditions per place. [2021-08-13 07:40:54,995 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 206 selfloop transitions, 50 changer transitions 11/277 dead transitions. [2021-08-13 07:40:54,995 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 277 transitions, 3894 flow [2021-08-13 07:40:54,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:40:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:40:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 07:40:54,997 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 07:40:54,997 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 07:40:54,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 07:40:54,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:54,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 07:40:54,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:54,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:55,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:55,000 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2021-08-13 07:40:55,000 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 277 transitions, 3894 flow [2021-08-13 07:40:55,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:55,000 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:55,000 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:55,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 07:40:55,001 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:55,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash -889785942, now seen corresponding path program 7 times [2021-08-13 07:40:55,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:55,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128793627] [2021-08-13 07:40:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:55,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:55,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:40:55,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:55,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:55,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:55,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:55,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128793627] [2021-08-13 07:40:55,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128793627] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:55,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:55,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:40:55,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617252278] [2021-08-13 07:40:55,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:40:55,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:55,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:40:55,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:40:55,111 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:55,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 277 transitions, 3894 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:55,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:55,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:55,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:55,578 INFO L129 PetriNetUnfolder]: 1116/2309 cut-off events. [2021-08-13 07:40:55,578 INFO L130 PetriNetUnfolder]: For 626/626 co-relation queries the response was YES. [2021-08-13 07:40:55,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15445 conditions, 2309 events. 1116/2309 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16193 event pairs, 178 based on Foata normal form. 1/2308 useless extension candidates. Maximal degree in co-relation 15154. Up to 1242 conditions per place. [2021-08-13 07:40:55,603 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 214 selfloop transitions, 70 changer transitions 20/314 dead transitions. [2021-08-13 07:40:55,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 314 transitions, 5020 flow [2021-08-13 07:40:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:40:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:40:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 07:40:55,605 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 07:40:55,605 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 07:40:55,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 07:40:55,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:55,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 07:40:55,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:55,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:55,607 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:55,608 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 54 predicate places. [2021-08-13 07:40:55,608 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 314 transitions, 5020 flow [2021-08-13 07:40:55,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:55,608 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:55,608 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:55,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 07:40:55,608 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:55,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:55,609 INFO L82 PathProgramCache]: Analyzing trace with hash 449096972, now seen corresponding path program 8 times [2021-08-13 07:40:55,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:55,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520309168] [2021-08-13 07:40:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:55,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:55,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:55,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:55,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:55,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:55,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:55,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:55,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520309168] [2021-08-13 07:40:55,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520309168] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:55,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:55,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:40:55,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666901718] [2021-08-13 07:40:55,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:40:55,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:55,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:40:55,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:40:55,719 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:55,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 314 transitions, 5020 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:55,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:55,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:55,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:56,180 INFO L129 PetriNetUnfolder]: 1131/2358 cut-off events. [2021-08-13 07:40:56,180 INFO L130 PetriNetUnfolder]: For 649/649 co-relation queries the response was YES. [2021-08-13 07:40:56,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17567 conditions, 2358 events. 1131/2358 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16731 event pairs, 175 based on Foata normal form. 1/2356 useless extension candidates. Maximal degree in co-relation 17263. Up to 1276 conditions per place. [2021-08-13 07:40:56,206 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 204 selfloop transitions, 92 changer transitions 28/334 dead transitions. [2021-08-13 07:40:56,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 334 transitions, 5988 flow [2021-08-13 07:40:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:40:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:40:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 07:40:56,208 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 07:40:56,208 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 07:40:56,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 07:40:56,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:56,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 07:40:56,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:56,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:56,210 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:56,211 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2021-08-13 07:40:56,211 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 334 transitions, 5988 flow [2021-08-13 07:40:56,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:56,211 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:56,211 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:56,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 07:40:56,212 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:56,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:56,213 INFO L82 PathProgramCache]: Analyzing trace with hash -741333820, now seen corresponding path program 9 times [2021-08-13 07:40:56,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:56,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674430226] [2021-08-13 07:40:56,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:56,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:56,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:40:56,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:56,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:56,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:56,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:56,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674430226] [2021-08-13 07:40:56,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674430226] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:56,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:56,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:40:56,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228235849] [2021-08-13 07:40:56,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:40:56,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:56,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:40:56,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:40:56,325 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:56,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 334 transitions, 5988 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:56,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:56,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:56,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:56,858 INFO L129 PetriNetUnfolder]: 1177/2509 cut-off events. [2021-08-13 07:40:56,858 INFO L130 PetriNetUnfolder]: For 673/673 co-relation queries the response was YES. [2021-08-13 07:40:56,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20440 conditions, 2509 events. 1177/2509 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 18374 event pairs, 157 based on Foata normal form. 1/2509 useless extension candidates. Maximal degree in co-relation 20129. Up to 1374 conditions per place. [2021-08-13 07:40:56,888 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 284 selfloop transitions, 91 changer transitions 57/442 dead transitions. [2021-08-13 07:40:56,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 442 transitions, 8796 flow [2021-08-13 07:40:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:40:56,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:40:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 07:40:56,890 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 07:40:56,890 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 07:40:56,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 07:40:56,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:56,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 07:40:56,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:56,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:56,892 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:56,892 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2021-08-13 07:40:56,892 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 442 transitions, 8796 flow [2021-08-13 07:40:56,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:56,892 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:56,892 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:56,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 07:40:56,892 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:56,893 INFO L82 PathProgramCache]: Analyzing trace with hash -852093036, now seen corresponding path program 10 times [2021-08-13 07:40:56,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:56,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90314198] [2021-08-13 07:40:56,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:56,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:56,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:56,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:56,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:56,964 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:56,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:56,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:56,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90314198] [2021-08-13 07:40:56,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90314198] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:56,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:56,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:40:56,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244286327] [2021-08-13 07:40:56,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:40:56,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:56,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:40:56,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:40:56,970 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:56,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 442 transitions, 8796 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:56,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:56,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:56,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:57,484 INFO L129 PetriNetUnfolder]: 1189/2551 cut-off events. [2021-08-13 07:40:57,485 INFO L130 PetriNetUnfolder]: For 695/695 co-relation queries the response was YES. [2021-08-13 07:40:57,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22698 conditions, 2551 events. 1189/2551 cut-off events. For 695/695 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 18935 event pairs, 157 based on Foata normal form. 1/2549 useless extension candidates. Maximal degree in co-relation 22380. Up to 1427 conditions per place. [2021-08-13 07:40:57,517 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 330 selfloop transitions, 62 changer transitions 57/459 dead transitions. [2021-08-13 07:40:57,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 459 transitions, 10034 flow [2021-08-13 07:40:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:40:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:40:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-08-13 07:40:57,519 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-08-13 07:40:57,519 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-08-13 07:40:57,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-08-13 07:40:57,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:57,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-08-13 07:40:57,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.375) internal successors, (267), 8 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:57,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:57,521 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:57,521 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2021-08-13 07:40:57,521 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 459 transitions, 10034 flow [2021-08-13 07:40:57,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:57,521 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:57,521 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:57,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 07:40:57,522 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:57,522 INFO L82 PathProgramCache]: Analyzing trace with hash 934782332, now seen corresponding path program 11 times [2021-08-13 07:40:57,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:57,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805561567] [2021-08-13 07:40:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:57,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:57,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:57,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:57,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:57,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:57,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:57,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:57,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:57,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:57,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:57,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:57,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:40:57,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:57,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:57,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:57,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:57,598 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:57,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:57,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:57,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805561567] [2021-08-13 07:40:57,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805561567] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:57,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:57,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:40:57,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307153245] [2021-08-13 07:40:57,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:40:57,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:57,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:40:57,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:40:57,602 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:57,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 459 transitions, 10034 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:57,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:57,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:57,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:58,225 INFO L129 PetriNetUnfolder]: 1209/2651 cut-off events. [2021-08-13 07:40:58,225 INFO L130 PetriNetUnfolder]: For 748/748 co-relation queries the response was YES. [2021-08-13 07:40:58,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25352 conditions, 2651 events. 1209/2651 cut-off events. For 748/748 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20166 event pairs, 157 based on Foata normal form. 1/2649 useless extension candidates. Maximal degree in co-relation 25001. Up to 1479 conditions per place. [2021-08-13 07:40:58,254 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 329 selfloop transitions, 94 changer transitions 62/495 dead transitions. [2021-08-13 07:40:58,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 495 transitions, 11796 flow [2021-08-13 07:40:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:40:58,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:40:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 07:40:58,256 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:40:58,256 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 07:40:58,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 07:40:58,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:58,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 07:40:58,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:58,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:58,258 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:58,258 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2021-08-13 07:40:58,258 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 495 transitions, 11796 flow [2021-08-13 07:40:58,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:58,259 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:58,259 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:58,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 07:40:58,259 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:58,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1485732086, now seen corresponding path program 12 times [2021-08-13 07:40:58,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:58,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235292927] [2021-08-13 07:40:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:58,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:58,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:58,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:58,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:58,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:58,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:58,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:58,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:58,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:58,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:58,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:58,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:58,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:58,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:58,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:58,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:58,331 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:58,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:58,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:58,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235292927] [2021-08-13 07:40:58,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235292927] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:58,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:58,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:40:58,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549250692] [2021-08-13 07:40:58,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:40:58,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:58,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:40:58,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:40:58,335 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:58,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 495 transitions, 11796 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:58,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:58,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:58,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:40:59,097 INFO L129 PetriNetUnfolder]: 1222/2697 cut-off events. [2021-08-13 07:40:59,097 INFO L130 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2021-08-13 07:40:59,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27741 conditions, 2697 events. 1222/2697 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20690 event pairs, 155 based on Foata normal form. 1/2696 useless extension candidates. Maximal degree in co-relation 27358. Up to 1505 conditions per place. [2021-08-13 07:40:59,127 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 308 selfloop transitions, 112 changer transitions 81/511 dead transitions. [2021-08-13 07:40:59,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 511 transitions, 13182 flow [2021-08-13 07:40:59,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:40:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:40:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 07:40:59,129 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 07:40:59,129 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 07:40:59,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 07:40:59,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:40:59,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 07:40:59,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:59,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:59,131 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:59,131 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2021-08-13 07:40:59,131 INFO L482 AbstractCegarLoop]: Abstraction has has 132 places, 511 transitions, 13182 flow [2021-08-13 07:40:59,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:40:59,131 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:40:59,131 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:40:59,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 07:40:59,132 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:40:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:40:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash -738542674, now seen corresponding path program 13 times [2021-08-13 07:40:59,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:40:59,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611930756] [2021-08-13 07:40:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:40:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:40:59,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:59,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:59,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:59,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:59,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:59,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:59,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:59,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:59,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:59,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:59,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:59,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:59,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:59,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:40:59,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:40:59,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:40:59,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:40:59,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:40:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:40:59,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:40:59,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611930756] [2021-08-13 07:40:59,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611930756] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:40:59,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:40:59,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:40:59,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818532284] [2021-08-13 07:40:59,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:40:59,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:40:59,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:40:59,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:40:59,275 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:40:59,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 511 transitions, 13182 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:40:59,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:40:59,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:40:59,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:00,038 INFO L129 PetriNetUnfolder]: 1279/2864 cut-off events. [2021-08-13 07:41:00,039 INFO L130 PetriNetUnfolder]: For 844/844 co-relation queries the response was YES. [2021-08-13 07:41:00,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31399 conditions, 2864 events. 1279/2864 cut-off events. For 844/844 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 22525 event pairs, 155 based on Foata normal form. 1/2862 useless extension candidates. Maximal degree in co-relation 30982. Up to 1577 conditions per place. [2021-08-13 07:41:00,072 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 384 selfloop transitions, 75 changer transitions 96/565 dead transitions. [2021-08-13 07:41:00,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 565 transitions, 15696 flow [2021-08-13 07:41:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:41:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:41:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 07:41:00,074 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 07:41:00,074 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 07:41:00,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 07:41:00,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:00,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 07:41:00,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:00,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:00,076 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:00,076 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2021-08-13 07:41:00,076 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 565 transitions, 15696 flow [2021-08-13 07:41:00,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:00,076 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:00,076 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:00,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 07:41:00,077 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:00,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1272456132, now seen corresponding path program 14 times [2021-08-13 07:41:00,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:00,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924445230] [2021-08-13 07:41:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:00,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:00,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:00,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:00,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:00,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:00,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:00,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:00,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:00,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:00,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:00,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:00,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:41:00,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:00,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:00,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:00,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:00,164 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:00,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:00,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:00,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924445230] [2021-08-13 07:41:00,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924445230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:00,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:00,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:00,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810687962] [2021-08-13 07:41:00,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:00,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:00,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:00,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:00,169 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:00,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 565 transitions, 15696 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:00,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:00,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:00,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:01,012 INFO L129 PetriNetUnfolder]: 1323/3007 cut-off events. [2021-08-13 07:41:01,012 INFO L130 PetriNetUnfolder]: For 904/904 co-relation queries the response was YES. [2021-08-13 07:41:01,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34871 conditions, 3007 events. 1323/3007 cut-off events. For 904/904 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 24149 event pairs, 155 based on Foata normal form. 1/3005 useless extension candidates. Maximal degree in co-relation 34427. Up to 1660 conditions per place. [2021-08-13 07:41:01,036 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 414 selfloop transitions, 78 changer transitions 110/612 dead transitions. [2021-08-13 07:41:01,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 612 transitions, 18216 flow [2021-08-13 07:41:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 07:41:01,039 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 07:41:01,039 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 07:41:01,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 07:41:01,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:01,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 07:41:01,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:01,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:01,041 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:01,041 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 108 predicate places. [2021-08-13 07:41:01,042 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 612 transitions, 18216 flow [2021-08-13 07:41:01,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:01,042 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:01,042 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:01,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 07:41:01,042 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:01,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:01,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1809580578, now seen corresponding path program 15 times [2021-08-13 07:41:01,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:01,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596660858] [2021-08-13 07:41:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:01,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:01,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:01,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:01,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:01,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:01,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:01,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:01,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:01,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:01,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:01,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:01,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:41:01,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:01,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:01,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:01,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:01,118 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:01,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:01,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:01,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596660858] [2021-08-13 07:41:01,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596660858] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:01,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:01,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:01,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274975632] [2021-08-13 07:41:01,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:01,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:01,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:01,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:01,125 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:01,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 612 transitions, 18216 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:01,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:01,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:01,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:02,109 INFO L129 PetriNetUnfolder]: 1342/3101 cut-off events. [2021-08-13 07:41:02,109 INFO L130 PetriNetUnfolder]: For 960/960 co-relation queries the response was YES. [2021-08-13 07:41:02,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37935 conditions, 3101 events. 1342/3101 cut-off events. For 960/960 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 25369 event pairs, 159 based on Foata normal form. 1/3099 useless extension candidates. Maximal degree in co-relation 37464. Up to 1708 conditions per place. [2021-08-13 07:41:02,140 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 402 selfloop transitions, 112 changer transitions 124/648 dead transitions. [2021-08-13 07:41:02,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 648 transitions, 20572 flow [2021-08-13 07:41:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 07:41:02,142 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 07:41:02,142 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 07:41:02,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 07:41:02,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:02,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 07:41:02,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:02,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:02,144 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:02,145 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 116 predicate places. [2021-08-13 07:41:02,145 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 648 transitions, 20572 flow [2021-08-13 07:41:02,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:02,145 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:02,145 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:02,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 07:41:02,145 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:02,146 INFO L82 PathProgramCache]: Analyzing trace with hash -185273474, now seen corresponding path program 16 times [2021-08-13 07:41:02,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:02,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459379287] [2021-08-13 07:41:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:02,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:02,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:02,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:02,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:02,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:02,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:02,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:02,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:02,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:02,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:02,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:02,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:02,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:02,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:02,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:02,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:02,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:02,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:02,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:02,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459379287] [2021-08-13 07:41:02,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459379287] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:02,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:02,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:02,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251736881] [2021-08-13 07:41:02,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:02,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:02,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:02,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:02,225 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:02,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 648 transitions, 20572 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:02,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:02,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:02,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:03,300 INFO L129 PetriNetUnfolder]: 1347/3130 cut-off events. [2021-08-13 07:41:03,301 INFO L130 PetriNetUnfolder]: For 1004/1004 co-relation queries the response was YES. [2021-08-13 07:41:03,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40465 conditions, 3130 events. 1347/3130 cut-off events. For 1004/1004 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 25820 event pairs, 159 based on Foata normal form. 1/3128 useless extension candidates. Maximal degree in co-relation 39968. Up to 1721 conditions per place. [2021-08-13 07:41:03,324 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 384 selfloop transitions, 134 changer transitions 129/657 dead transitions. [2021-08-13 07:41:03,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 657 transitions, 22154 flow [2021-08-13 07:41:03,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 07:41:03,326 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 07:41:03,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 07:41:03,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 07:41:03,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:03,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 07:41:03,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:03,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:03,328 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:03,328 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 124 predicate places. [2021-08-13 07:41:03,328 INFO L482 AbstractCegarLoop]: Abstraction has has 163 places, 657 transitions, 22154 flow [2021-08-13 07:41:03,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:03,328 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:03,328 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:03,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 07:41:03,329 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:03,329 INFO L82 PathProgramCache]: Analyzing trace with hash 980497248, now seen corresponding path program 17 times [2021-08-13 07:41:03,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:03,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697028559] [2021-08-13 07:41:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:03,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:03,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:03,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:03,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:03,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:03,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:03,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:03,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:03,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:03,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:03,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:03,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:41:03,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:03,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:03,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:03,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:03,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:03,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:03,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:03,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697028559] [2021-08-13 07:41:03,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697028559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:03,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:03,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:03,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210422569] [2021-08-13 07:41:03,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:03,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:03,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:03,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:03,436 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:03,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 657 transitions, 22154 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:03,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:03,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:03,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:04,609 INFO L129 PetriNetUnfolder]: 1404/3380 cut-off events. [2021-08-13 07:41:04,609 INFO L130 PetriNetUnfolder]: For 1132/1132 co-relation queries the response was YES. [2021-08-13 07:41:04,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45292 conditions, 3380 events. 1404/3380 cut-off events. For 1132/1132 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 29105 event pairs, 154 based on Foata normal form. 1/3378 useless extension candidates. Maximal degree in co-relation 44746. Up to 1851 conditions per place. [2021-08-13 07:41:04,635 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 512 selfloop transitions, 90 changer transitions 162/774 dead transitions. [2021-08-13 07:41:04,636 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 774 transitions, 27710 flow [2021-08-13 07:41:04,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 07:41:04,637 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:41:04,637 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 07:41:04,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 07:41:04,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:04,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 07:41:04,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:04,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:04,639 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:04,639 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 132 predicate places. [2021-08-13 07:41:04,639 INFO L482 AbstractCegarLoop]: Abstraction has has 171 places, 774 transitions, 27710 flow [2021-08-13 07:41:04,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:04,639 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:04,639 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:04,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 07:41:04,640 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:04,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:04,640 INFO L82 PathProgramCache]: Analyzing trace with hash 523850460, now seen corresponding path program 18 times [2021-08-13 07:41:04,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:04,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383869717] [2021-08-13 07:41:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:04,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:04,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:04,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:04,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:04,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:04,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:04,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:04,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:04,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:04,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:04,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:04,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:41:04,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:04,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:04,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:04,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:04,723 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:04,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:04,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:04,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383869717] [2021-08-13 07:41:04,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383869717] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:04,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:04,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:04,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322905895] [2021-08-13 07:41:04,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:04,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:04,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:04,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:04,728 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:04,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 774 transitions, 27710 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:04,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:04,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:04,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:06,139 INFO L129 PetriNetUnfolder]: 1416/3465 cut-off events. [2021-08-13 07:41:06,139 INFO L130 PetriNetUnfolder]: For 1195/1195 co-relation queries the response was YES. [2021-08-13 07:41:06,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48626 conditions, 3465 events. 1416/3465 cut-off events. For 1195/1195 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 30368 event pairs, 154 based on Foata normal form. 1/3461 useless extension candidates. Maximal degree in co-relation 48048. Up to 1896 conditions per place. [2021-08-13 07:41:06,176 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 496 selfloop transitions, 128 changer transitions 200/834 dead transitions. [2021-08-13 07:41:06,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 834 transitions, 31518 flow [2021-08-13 07:41:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 07:41:06,178 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:41:06,178 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 07:41:06,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 07:41:06,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:06,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 07:41:06,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:06,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:06,180 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:06,180 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 140 predicate places. [2021-08-13 07:41:06,181 INFO L482 AbstractCegarLoop]: Abstraction has has 179 places, 834 transitions, 31518 flow [2021-08-13 07:41:06,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:06,181 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:06,181 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:06,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 07:41:06,181 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:06,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1046380510, now seen corresponding path program 19 times [2021-08-13 07:41:06,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:06,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104045079] [2021-08-13 07:41:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:06,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:06,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:06,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:06,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:06,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:06,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:06,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:06,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:06,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:06,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:06,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:06,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:41:06,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:06,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:06,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:06,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:06,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:06,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:06,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:06,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104045079] [2021-08-13 07:41:06,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104045079] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:06,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:06,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:06,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162252227] [2021-08-13 07:41:06,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:06,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:06,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:06,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:06,259 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:06,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 834 transitions, 31518 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:06,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:06,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:06,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:08,002 INFO L129 PetriNetUnfolder]: 1427/3555 cut-off events. [2021-08-13 07:41:08,002 INFO L130 PetriNetUnfolder]: For 1260/1260 co-relation queries the response was YES. [2021-08-13 07:41:08,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52112 conditions, 3555 events. 1427/3555 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 31708 event pairs, 163 based on Foata normal form. 1/3550 useless extension candidates. Maximal degree in co-relation 51502. Up to 1944 conditions per place. [2021-08-13 07:41:08,035 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 510 selfloop transitions, 129 changer transitions 223/872 dead transitions. [2021-08-13 07:41:08,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 872 transitions, 34686 flow [2021-08-13 07:41:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:08,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 07:41:08,037 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 07:41:08,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 07:41:08,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 07:41:08,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:08,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 07:41:08,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:08,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:08,038 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:08,038 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2021-08-13 07:41:08,038 INFO L482 AbstractCegarLoop]: Abstraction has has 187 places, 872 transitions, 34686 flow [2021-08-13 07:41:08,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:08,039 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:08,039 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:08,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 07:41:08,039 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:08,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:08,039 INFO L82 PathProgramCache]: Analyzing trace with hash -206023826, now seen corresponding path program 20 times [2021-08-13 07:41:08,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:08,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665612468] [2021-08-13 07:41:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:08,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:08,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:08,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:08,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:08,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:08,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:08,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:08,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:08,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:08,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:08,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:08,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:08,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:08,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:08,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:08,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:08,090 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:08,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:08,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:08,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:08,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665612468] [2021-08-13 07:41:08,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665612468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:08,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:08,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 07:41:08,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880120990] [2021-08-13 07:41:08,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:41:08,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:08,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:41:08,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:41:08,095 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:08,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 872 transitions, 34686 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:08,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:08,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:08,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:10,246 INFO L129 PetriNetUnfolder]: 1494/3729 cut-off events. [2021-08-13 07:41:10,247 INFO L130 PetriNetUnfolder]: For 1379/1379 co-relation queries the response was YES. [2021-08-13 07:41:10,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56979 conditions, 3729 events. 1494/3729 cut-off events. For 1379/1379 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 33678 event pairs, 104 based on Foata normal form. 1/3724 useless extension candidates. Maximal degree in co-relation 56310. Up to 2163 conditions per place. [2021-08-13 07:41:10,277 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 619 selfloop transitions, 48 changer transitions 223/900 dead transitions. [2021-08-13 07:41:10,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 900 transitions, 37621 flow [2021-08-13 07:41:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:41:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:41:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2021-08-13 07:41:10,278 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7694805194805194 [2021-08-13 07:41:10,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 237 transitions. [2021-08-13 07:41:10,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 237 transitions. [2021-08-13 07:41:10,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:10,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 237 transitions. [2021-08-13 07:41:10,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:10,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:10,279 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:10,279 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 154 predicate places. [2021-08-13 07:41:10,279 INFO L482 AbstractCegarLoop]: Abstraction has has 193 places, 900 transitions, 37621 flow [2021-08-13 07:41:10,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:10,280 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:10,280 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:10,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 07:41:10,280 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:10,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:10,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1672089880, now seen corresponding path program 21 times [2021-08-13 07:41:10,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:10,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454449094] [2021-08-13 07:41:10,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:10,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:10,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:10,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:10,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:10,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:10,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:10,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:10,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:10,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:10,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:10,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:10,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:10,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:10,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:10,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:10,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:10,346 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:10,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:10,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:10,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454449094] [2021-08-13 07:41:10,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454449094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:10,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:10,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:41:10,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607081949] [2021-08-13 07:41:10,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:41:10,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:10,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:41:10,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:41:10,350 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:10,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 900 transitions, 37621 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:10,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:10,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:10,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:12,513 INFO L129 PetriNetUnfolder]: 1516/3789 cut-off events. [2021-08-13 07:41:12,513 INFO L130 PetriNetUnfolder]: For 1427/1427 co-relation queries the response was YES. [2021-08-13 07:41:12,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60685 conditions, 3789 events. 1516/3789 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 34368 event pairs, 108 based on Foata normal form. 1/3784 useless extension candidates. Maximal degree in co-relation 60015. Up to 2212 conditions per place. [2021-08-13 07:41:12,552 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 629 selfloop transitions, 65 changer transitions 223/927 dead transitions. [2021-08-13 07:41:12,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 927 transitions, 40589 flow [2021-08-13 07:41:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:41:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:41:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 07:41:12,554 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 07:41:12,554 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 07:41:12,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 07:41:12,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:12,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 07:41:12,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:12,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:12,555 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:12,555 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 161 predicate places. [2021-08-13 07:41:12,555 INFO L482 AbstractCegarLoop]: Abstraction has has 200 places, 927 transitions, 40589 flow [2021-08-13 07:41:12,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:12,556 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:12,556 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:12,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 07:41:12,556 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:12,556 INFO L82 PathProgramCache]: Analyzing trace with hash -174073140, now seen corresponding path program 22 times [2021-08-13 07:41:12,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:12,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557422117] [2021-08-13 07:41:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:12,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:12,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:12,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:12,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:12,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:12,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:12,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:12,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:12,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:12,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:12,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:12,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:12,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:12,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:12,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:12,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:12,625 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:12,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:12,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:12,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557422117] [2021-08-13 07:41:12,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557422117] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:12,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:12,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:41:12,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208934087] [2021-08-13 07:41:12,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:41:12,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:12,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:41:12,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:41:12,629 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:12,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 927 transitions, 40589 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:12,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:12,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:12,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:15,036 INFO L129 PetriNetUnfolder]: 1546/3899 cut-off events. [2021-08-13 07:41:15,036 INFO L130 PetriNetUnfolder]: For 1523/1523 co-relation queries the response was YES. [2021-08-13 07:41:15,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64742 conditions, 3899 events. 1546/3899 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 35849 event pairs, 98 based on Foata normal form. 1/3894 useless extension candidates. Maximal degree in co-relation 64016. Up to 2268 conditions per place. [2021-08-13 07:41:15,073 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 634 selfloop transitions, 94 changer transitions 223/961 dead transitions. [2021-08-13 07:41:15,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 961 transitions, 44027 flow [2021-08-13 07:41:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:41:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:41:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2021-08-13 07:41:15,075 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-08-13 07:41:15,075 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 270 transitions. [2021-08-13 07:41:15,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 270 transitions. [2021-08-13 07:41:15,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:15,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 270 transitions. [2021-08-13 07:41:15,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.75) internal successors, (270), 8 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:15,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:15,076 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:15,076 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2021-08-13 07:41:15,076 INFO L482 AbstractCegarLoop]: Abstraction has has 207 places, 961 transitions, 44027 flow [2021-08-13 07:41:15,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:15,077 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:15,077 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:15,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 07:41:15,077 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:15,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:15,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1398778186, now seen corresponding path program 23 times [2021-08-13 07:41:15,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:15,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469316757] [2021-08-13 07:41:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:15,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:15,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:15,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:15,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:15,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:15,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:15,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:15,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:15,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:15,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:15,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:15,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:15,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:15,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:15,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:15,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:15,135 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:15,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:15,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:15,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469316757] [2021-08-13 07:41:15,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469316757] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:15,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:15,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:41:15,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362393583] [2021-08-13 07:41:15,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:41:15,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:15,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:41:15,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:41:15,139 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:15,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 961 transitions, 44027 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:15,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:15,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:15,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:18,203 INFO L129 PetriNetUnfolder]: 1622/4111 cut-off events. [2021-08-13 07:41:18,204 INFO L130 PetriNetUnfolder]: For 1630/1630 co-relation queries the response was YES. [2021-08-13 07:41:18,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70746 conditions, 4111 events. 1622/4111 cut-off events. For 1630/1630 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 38395 event pairs, 76 based on Foata normal form. 1/4106 useless extension candidates. Maximal degree in co-relation 69957. Up to 2399 conditions per place. [2021-08-13 07:41:18,240 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 733 selfloop transitions, 59 changer transitions 224/1026 dead transitions. [2021-08-13 07:41:18,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 1026 transitions, 49074 flow [2021-08-13 07:41:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:41:18,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:41:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 07:41:18,241 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 07:41:18,241 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 07:41:18,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 07:41:18,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:18,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 07:41:18,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:18,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:18,242 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:18,242 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 175 predicate places. [2021-08-13 07:41:18,243 INFO L482 AbstractCegarLoop]: Abstraction has has 214 places, 1026 transitions, 49074 flow [2021-08-13 07:41:18,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:18,243 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:18,243 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:18,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 07:41:18,243 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:18,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:18,243 INFO L82 PathProgramCache]: Analyzing trace with hash -442799866, now seen corresponding path program 24 times [2021-08-13 07:41:18,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:18,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417514488] [2021-08-13 07:41:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:18,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:18,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:18,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:18,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:18,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:18,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:18,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:18,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:18,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:18,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:18,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:18,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:18,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:18,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:18,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:18,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:18,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:18,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:18,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:18,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417514488] [2021-08-13 07:41:18,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417514488] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:18,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:18,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:41:18,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648099594] [2021-08-13 07:41:18,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:41:18,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:18,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:41:18,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:41:18,305 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:18,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 1026 transitions, 49074 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:18,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:18,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:18,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:21,430 INFO L129 PetriNetUnfolder]: 1635/4163 cut-off events. [2021-08-13 07:41:21,430 INFO L130 PetriNetUnfolder]: For 1694/1694 co-relation queries the response was YES. [2021-08-13 07:41:21,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74310 conditions, 4163 events. 1635/4163 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 39052 event pairs, 79 based on Foata normal form. 1/4157 useless extension candidates. Maximal degree in co-relation 73495. Up to 2426 conditions per place. [2021-08-13 07:41:21,468 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 740 selfloop transitions, 82 changer transitions 225/1057 dead transitions. [2021-08-13 07:41:21,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 1057 transitions, 52656 flow [2021-08-13 07:41:21,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:41:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:41:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 07:41:21,469 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 07:41:21,469 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 07:41:21,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 07:41:21,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:21,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 07:41:21,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:21,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:21,471 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:21,471 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 182 predicate places. [2021-08-13 07:41:21,471 INFO L482 AbstractCegarLoop]: Abstraction has has 221 places, 1057 transitions, 52656 flow [2021-08-13 07:41:21,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:21,471 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:21,471 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:21,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 07:41:21,472 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:21,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:21,472 INFO L82 PathProgramCache]: Analyzing trace with hash -649609574, now seen corresponding path program 25 times [2021-08-13 07:41:21,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:21,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73712498] [2021-08-13 07:41:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:21,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:21,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:21,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:21,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:21,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:21,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:21,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:21,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:21,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:21,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:21,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:21,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:21,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:21,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:21,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:21,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:21,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:21,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:21,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:21,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73712498] [2021-08-13 07:41:21,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73712498] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:21,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:21,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:21,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295602426] [2021-08-13 07:41:21,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:21,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:21,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:21,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:21,545 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:21,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 1057 transitions, 52656 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:21,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:21,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:21,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:25,236 INFO L129 PetriNetUnfolder]: 1652/4224 cut-off events. [2021-08-13 07:41:25,237 INFO L130 PetriNetUnfolder]: For 1759/1759 co-relation queries the response was YES. [2021-08-13 07:41:25,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78094 conditions, 4224 events. 1652/4224 cut-off events. For 1759/1759 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 39899 event pairs, 79 based on Foata normal form. 1/4219 useless extension candidates. Maximal degree in co-relation 77241. Up to 2459 conditions per place. [2021-08-13 07:41:25,275 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 708 selfloop transitions, 112 changer transitions 248/1078 dead transitions. [2021-08-13 07:41:25,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1078 transitions, 55842 flow [2021-08-13 07:41:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:25,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 07:41:25,276 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 07:41:25,276 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 07:41:25,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 07:41:25,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:25,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 07:41:25,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:25,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:25,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:25,278 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 190 predicate places. [2021-08-13 07:41:25,278 INFO L482 AbstractCegarLoop]: Abstraction has has 229 places, 1078 transitions, 55842 flow [2021-08-13 07:41:25,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:25,278 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:25,278 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:25,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 07:41:25,278 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:25,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:25,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1618659668, now seen corresponding path program 26 times [2021-08-13 07:41:25,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:25,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108373197] [2021-08-13 07:41:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:25,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:25,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:25,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:25,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:25,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:25,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:25,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:25,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:25,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:25,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:25,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:25,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:25,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:25,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:25,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:25,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:25,352 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:25,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:25,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:25,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108373197] [2021-08-13 07:41:25,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108373197] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:25,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:25,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:25,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153060921] [2021-08-13 07:41:25,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:25,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:25,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:25,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:25,357 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:25,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 1078 transitions, 55842 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:25,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:25,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:25,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:29,001 INFO L129 PetriNetUnfolder]: 1654/4255 cut-off events. [2021-08-13 07:41:29,001 INFO L130 PetriNetUnfolder]: For 1827/1827 co-relation queries the response was YES. [2021-08-13 07:41:29,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81440 conditions, 4255 events. 1654/4255 cut-off events. For 1827/1827 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 40380 event pairs, 84 based on Foata normal form. 1/4250 useless extension candidates. Maximal degree in co-relation 80566. Up to 2474 conditions per place. [2021-08-13 07:41:29,049 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 666 selfloop transitions, 101 changer transitions 316/1093 dead transitions. [2021-08-13 07:41:29,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 1093 transitions, 58788 flow [2021-08-13 07:41:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 07:41:29,051 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 07:41:29,051 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 07:41:29,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 07:41:29,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:29,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 07:41:29,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:29,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:29,052 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:29,052 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 198 predicate places. [2021-08-13 07:41:29,053 INFO L482 AbstractCegarLoop]: Abstraction has has 237 places, 1093 transitions, 58788 flow [2021-08-13 07:41:29,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:29,053 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:29,053 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:29,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 07:41:29,053 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash 802891898, now seen corresponding path program 27 times [2021-08-13 07:41:29,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:29,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585656476] [2021-08-13 07:41:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:29,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:29,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:29,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:29,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:29,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:29,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:29,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:29,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:29,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:29,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:29,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:29,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:29,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:29,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:29,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:29,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:29,114 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:29,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:29,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:29,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585656476] [2021-08-13 07:41:29,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585656476] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:29,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:29,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:41:29,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218028260] [2021-08-13 07:41:29,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:41:29,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:29,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:41:29,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:41:29,118 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:29,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 1093 transitions, 58788 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:29,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:29,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:29,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:33,103 INFO L129 PetriNetUnfolder]: 1674/4327 cut-off events. [2021-08-13 07:41:33,103 INFO L130 PetriNetUnfolder]: For 1913/1913 co-relation queries the response was YES. [2021-08-13 07:41:33,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85554 conditions, 4327 events. 1674/4327 cut-off events. For 1913/1913 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 41391 event pairs, 76 based on Foata normal form. 1/4322 useless extension candidates. Maximal degree in co-relation 84647. Up to 2514 conditions per place. [2021-08-13 07:41:33,143 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 727 selfloop transitions, 72 changer transitions 339/1148 dead transitions. [2021-08-13 07:41:33,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 1148 transitions, 64094 flow [2021-08-13 07:41:33,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:41:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:41:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 07:41:33,145 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 07:41:33,145 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 07:41:33,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 07:41:33,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:33,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 07:41:33,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:33,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:33,146 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:33,146 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 205 predicate places. [2021-08-13 07:41:33,147 INFO L482 AbstractCegarLoop]: Abstraction has has 244 places, 1148 transitions, 64094 flow [2021-08-13 07:41:33,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:33,147 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:33,147 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:33,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 07:41:33,147 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:33,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1060028758, now seen corresponding path program 28 times [2021-08-13 07:41:33,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:33,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172427312] [2021-08-13 07:41:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:33,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:33,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:33,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:33,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:33,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:33,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:33,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:33,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:33,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:33,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:33,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:33,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:33,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:33,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:33,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:33,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:33,217 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:33,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:33,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:33,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172427312] [2021-08-13 07:41:33,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172427312] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:33,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:33,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:41:33,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783147854] [2021-08-13 07:41:33,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:41:33,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:33,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:41:33,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:41:33,221 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:33,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 1148 transitions, 64094 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:33,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:33,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:33,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:37,728 INFO L129 PetriNetUnfolder]: 1743/4509 cut-off events. [2021-08-13 07:41:37,728 INFO L130 PetriNetUnfolder]: For 2020/2020 co-relation queries the response was YES. [2021-08-13 07:41:37,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92417 conditions, 4509 events. 1743/4509 cut-off events. For 2020/2020 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 43449 event pairs, 83 based on Foata normal form. 1/4503 useless extension candidates. Maximal degree in co-relation 91481. Up to 2645 conditions per place. [2021-08-13 07:41:37,770 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 791 selfloop transitions, 90 changer transitions 344/1235 dead transitions. [2021-08-13 07:41:37,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1235 transitions, 71436 flow [2021-08-13 07:41:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:41:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:41:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-08-13 07:41:37,771 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-08-13 07:41:37,771 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-08-13 07:41:37,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-08-13 07:41:37,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:37,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-08-13 07:41:37,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.375) internal successors, (267), 8 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:37,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:37,772 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:37,772 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 212 predicate places. [2021-08-13 07:41:37,772 INFO L482 AbstractCegarLoop]: Abstraction has has 251 places, 1235 transitions, 71436 flow [2021-08-13 07:41:37,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:37,772 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:37,773 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:37,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 07:41:37,773 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1860646236, now seen corresponding path program 29 times [2021-08-13 07:41:37,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:37,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285296084] [2021-08-13 07:41:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:37,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:37,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:37,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:37,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:37,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:37,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:37,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:37,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:37,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:37,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:37,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:37,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:37,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:37,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:37,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:37,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:37,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:37,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:37,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:37,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285296084] [2021-08-13 07:41:37,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285296084] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:37,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:37,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:41:37,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225806591] [2021-08-13 07:41:37,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:41:37,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:37,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:41:37,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:41:37,838 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:37,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 1235 transitions, 71436 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:37,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:37,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:37,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:43,107 INFO L129 PetriNetUnfolder]: 1758/4559 cut-off events. [2021-08-13 07:41:43,107 INFO L130 PetriNetUnfolder]: For 2093/2093 co-relation queries the response was YES. [2021-08-13 07:41:43,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96558 conditions, 4559 events. 1758/4559 cut-off events. For 2093/2093 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 44151 event pairs, 83 based on Foata normal form. 1/4553 useless extension candidates. Maximal degree in co-relation 95608. Up to 2701 conditions per place. [2021-08-13 07:41:43,152 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 829 selfloop transitions, 70 changer transitions 350/1259 dead transitions. [2021-08-13 07:41:43,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1259 transitions, 75326 flow [2021-08-13 07:41:43,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:41:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:41:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2021-08-13 07:41:43,153 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2021-08-13 07:41:43,153 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2021-08-13 07:41:43,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2021-08-13 07:41:43,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:43,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2021-08-13 07:41:43,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.25) internal successors, (266), 8 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:43,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:43,154 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:43,155 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 219 predicate places. [2021-08-13 07:41:43,155 INFO L482 AbstractCegarLoop]: Abstraction has has 258 places, 1259 transitions, 75326 flow [2021-08-13 07:41:43,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:41:43,155 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:43,155 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:43,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 07:41:43,155 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:43,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1040241570, now seen corresponding path program 30 times [2021-08-13 07:41:43,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:43,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504107391] [2021-08-13 07:41:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:43,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:43,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:43,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:43,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:43,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:43,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:43,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:43,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:43,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:43,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:43,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:43,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:43,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:43,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:43,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:43,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:43,228 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:43,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:43,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:43,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504107391] [2021-08-13 07:41:43,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504107391] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:43,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:43,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:43,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696777640] [2021-08-13 07:41:43,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:43,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:43,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:43,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:43,233 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:43,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 1259 transitions, 75326 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:43,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:43,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:43,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:48,988 INFO L129 PetriNetUnfolder]: 1769/4607 cut-off events. [2021-08-13 07:41:48,989 INFO L130 PetriNetUnfolder]: For 2166/2166 co-relation queries the response was YES. [2021-08-13 07:41:49,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100472 conditions, 4607 events. 1769/4607 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 44773 event pairs, 86 based on Foata normal form. 1/4601 useless extension candidates. Maximal degree in co-relation 99497. Up to 2725 conditions per place. [2021-08-13 07:41:49,034 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 784 selfloop transitions, 125 changer transitions 357/1276 dead transitions. [2021-08-13 07:41:49,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 1276 transitions, 78878 flow [2021-08-13 07:41:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 07:41:49,035 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 07:41:49,035 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 07:41:49,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 07:41:49,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:49,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 07:41:49,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:49,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:49,036 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:49,037 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 227 predicate places. [2021-08-13 07:41:49,037 INFO L482 AbstractCegarLoop]: Abstraction has has 266 places, 1276 transitions, 78878 flow [2021-08-13 07:41:49,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:49,037 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:49,037 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:49,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 07:41:49,037 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:49,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:49,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1477888140, now seen corresponding path program 31 times [2021-08-13 07:41:49,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:49,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251106976] [2021-08-13 07:41:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:49,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:49,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:49,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:49,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:49,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:49,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:49,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:49,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:49,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:49,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:49,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:49,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:41:49,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:49,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:49,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:49,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:49,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:49,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:49,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:49,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251106976] [2021-08-13 07:41:49,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251106976] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:49,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:49,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:49,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038018062] [2021-08-13 07:41:49,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:49,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:49,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:49,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:49,106 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:49,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1276 transitions, 78878 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:49,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:49,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:49,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:54,846 INFO L129 PetriNetUnfolder]: 1792/4668 cut-off events. [2021-08-13 07:41:54,846 INFO L130 PetriNetUnfolder]: For 2238/2238 co-relation queries the response was YES. [2021-08-13 07:41:54,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104969 conditions, 4668 events. 1792/4668 cut-off events. For 2238/2238 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 45549 event pairs, 82 based on Foata normal form. 1/4662 useless extension candidates. Maximal degree in co-relation 103975. Up to 2766 conditions per place. [2021-08-13 07:41:54,896 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 825 selfloop transitions, 106 changer transitions 358/1299 dead transitions. [2021-08-13 07:41:54,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 1299 transitions, 82882 flow [2021-08-13 07:41:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:41:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:41:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 07:41:54,898 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:41:54,898 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 07:41:54,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 07:41:54,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:54,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 07:41:54,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:54,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:54,899 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:54,899 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 235 predicate places. [2021-08-13 07:41:54,899 INFO L482 AbstractCegarLoop]: Abstraction has has 274 places, 1299 transitions, 82882 flow [2021-08-13 07:41:54,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:54,900 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:54,900 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:41:54,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 07:41:54,900 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:54,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:54,900 INFO L82 PathProgramCache]: Analyzing trace with hash 71468734, now seen corresponding path program 32 times [2021-08-13 07:41:54,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:54,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073400383] [2021-08-13 07:41:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:54,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:54,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:54,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:54,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:54,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:54,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:54,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:54,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:54,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:54,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:54,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:54,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:41:54,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:54,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:41:54,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:54,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:54,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:41:54,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:41:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:54,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:54,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073400383] [2021-08-13 07:41:54,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073400383] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:54,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:54,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:41:54,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213657965] [2021-08-13 07:41:54,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:41:54,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:54,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:41:54,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:41:54,969 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:41:54,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 1299 transitions, 82882 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:41:54,970 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:54,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:41:54,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:01,119 INFO L129 PetriNetUnfolder]: 1828/4766 cut-off events. [2021-08-13 07:42:01,120 INFO L130 PetriNetUnfolder]: For 2309/2309 co-relation queries the response was YES. [2021-08-13 07:42:01,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110325 conditions, 4766 events. 1828/4766 cut-off events. For 2309/2309 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 46688 event pairs, 83 based on Foata normal form. 1/4760 useless extension candidates. Maximal degree in co-relation 109309. Up to 2830 conditions per place. [2021-08-13 07:42:01,169 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 890 selfloop transitions, 79 changer transitions 359/1338 dead transitions. [2021-08-13 07:42:01,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1338 transitions, 88034 flow [2021-08-13 07:42:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:42:01,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:42:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 07:42:01,170 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:42:01,170 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 07:42:01,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 07:42:01,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:01,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 07:42:01,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:01,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:01,171 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:01,172 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 243 predicate places. [2021-08-13 07:42:01,172 INFO L482 AbstractCegarLoop]: Abstraction has has 282 places, 1338 transitions, 88034 flow [2021-08-13 07:42:01,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:01,172 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:01,172 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:01,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 07:42:01,172 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:01,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1077126890, now seen corresponding path program 33 times [2021-08-13 07:42:01,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:01,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230351180] [2021-08-13 07:42:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:01,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:01,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:01,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:01,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:01,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:01,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:01,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:01,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:01,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:01,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:01,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:01,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:42:01,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:01,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:01,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:01,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:01,250 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:42:01,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:42:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:01,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:01,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230351180] [2021-08-13 07:42:01,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230351180] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:01,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:01,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:42:01,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551981376] [2021-08-13 07:42:01,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:42:01,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:01,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:42:01,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:42:01,256 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:42:01,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 1338 transitions, 88034 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:01,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:01,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:42:01,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:08,113 INFO L129 PetriNetUnfolder]: 1851/4842 cut-off events. [2021-08-13 07:42:08,113 INFO L130 PetriNetUnfolder]: For 2405/2405 co-relation queries the response was YES. [2021-08-13 07:42:08,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114944 conditions, 4842 events. 1851/4842 cut-off events. For 2405/2405 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 47720 event pairs, 90 based on Foata normal form. 1/4835 useless extension candidates. Maximal degree in co-relation 113886. Up to 2868 conditions per place. [2021-08-13 07:42:08,163 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 815 selfloop transitions, 148 changer transitions 389/1362 dead transitions. [2021-08-13 07:42:08,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1362 transitions, 92322 flow [2021-08-13 07:42:08,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:42:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:42:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-08-13 07:42:08,164 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:42:08,164 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-08-13 07:42:08,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-08-13 07:42:08,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:08,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-08-13 07:42:08,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:08,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:08,166 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:08,166 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 252 predicate places. [2021-08-13 07:42:08,166 INFO L482 AbstractCegarLoop]: Abstraction has has 291 places, 1362 transitions, 92322 flow [2021-08-13 07:42:08,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:08,166 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:08,166 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:08,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 07:42:08,166 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:08,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:08,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1826824290, now seen corresponding path program 34 times [2021-08-13 07:42:08,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:08,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286038520] [2021-08-13 07:42:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:08,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:08,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:08,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:08,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:08,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:08,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:08,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:08,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:08,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:08,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:08,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:08,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:42:08,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:08,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:08,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:08,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:08,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:42:08,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:42:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:08,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:08,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286038520] [2021-08-13 07:42:08,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286038520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:08,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:08,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:42:08,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422634967] [2021-08-13 07:42:08,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:42:08,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:08,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:42:08,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:42:08,234 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:42:08,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1362 transitions, 92322 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:08,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:08,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:42:08,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:14,970 INFO L129 PetriNetUnfolder]: 1870/4926 cut-off events. [2021-08-13 07:42:14,970 INFO L130 PetriNetUnfolder]: For 2500/2500 co-relation queries the response was YES. [2021-08-13 07:42:14,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120011 conditions, 4926 events. 1870/4926 cut-off events. For 2500/2500 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 48866 event pairs, 92 based on Foata normal form. 1/4919 useless extension candidates. Maximal degree in co-relation 118920. Up to 2917 conditions per place. [2021-08-13 07:42:15,022 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 902 selfloop transitions, 98 changer transitions 397/1407 dead transitions. [2021-08-13 07:42:15,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1407 transitions, 98176 flow [2021-08-13 07:42:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:42:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:42:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 07:42:15,023 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 07:42:15,023 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 07:42:15,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 07:42:15,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:15,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 07:42:15,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:15,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:15,024 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:15,025 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 260 predicate places. [2021-08-13 07:42:15,025 INFO L482 AbstractCegarLoop]: Abstraction has has 299 places, 1407 transitions, 98176 flow [2021-08-13 07:42:15,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:15,025 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:15,025 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:15,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 07:42:15,025 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:15,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:15,026 INFO L82 PathProgramCache]: Analyzing trace with hash -879345990, now seen corresponding path program 35 times [2021-08-13 07:42:15,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:15,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732580184] [2021-08-13 07:42:15,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:15,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:15,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:15,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:15,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:15,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:15,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:15,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:15,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:15,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:15,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:15,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:15,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:15,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:15,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:15,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:15,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:15,093 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:42:15,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:42:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:15,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:15,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732580184] [2021-08-13 07:42:15,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732580184] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:15,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:15,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:42:15,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984720269] [2021-08-13 07:42:15,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:42:15,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:15,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:42:15,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:42:15,097 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:42:15,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 1407 transitions, 98176 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:15,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:15,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:42:15,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:22,774 INFO L129 PetriNetUnfolder]: 1889/5003 cut-off events. [2021-08-13 07:42:22,774 INFO L130 PetriNetUnfolder]: For 2606/2606 co-relation queries the response was YES. [2021-08-13 07:42:22,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124737 conditions, 5003 events. 1889/5003 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 49990 event pairs, 100 based on Foata normal form. 1/4997 useless extension candidates. Maximal degree in co-relation 123595. Up to 2953 conditions per place. [2021-08-13 07:42:22,828 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 884 selfloop transitions, 137 changer transitions 397/1428 dead transitions. [2021-08-13 07:42:22,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1428 transitions, 102507 flow [2021-08-13 07:42:22,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:42:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:42:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2021-08-13 07:42:22,829 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7626262626262627 [2021-08-13 07:42:22,829 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 302 transitions. [2021-08-13 07:42:22,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 302 transitions. [2021-08-13 07:42:22,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:22,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 302 transitions. [2021-08-13 07:42:22,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.55555555555556) internal successors, (302), 9 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:22,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:22,830 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:22,830 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 268 predicate places. [2021-08-13 07:42:22,830 INFO L482 AbstractCegarLoop]: Abstraction has has 307 places, 1428 transitions, 102507 flow [2021-08-13 07:42:22,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:22,830 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:22,830 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:22,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 07:42:22,831 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:22,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:22,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1908959384, now seen corresponding path program 36 times [2021-08-13 07:42:22,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:22,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571447903] [2021-08-13 07:42:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:22,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:22,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:22,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:22,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:22,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:22,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:22,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:22,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:22,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:22,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:22,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:22,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:42:22,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:22,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:22,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:22,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:22,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:42:22,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:42:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:22,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:22,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571447903] [2021-08-13 07:42:22,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571447903] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:22,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:22,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:42:22,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881169295] [2021-08-13 07:42:22,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:42:22,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:22,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:42:22,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:42:22,900 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:42:22,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 1428 transitions, 102507 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:22,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:22,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:42:22,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:31,349 INFO L129 PetriNetUnfolder]: 1912/5098 cut-off events. [2021-08-13 07:42:31,349 INFO L130 PetriNetUnfolder]: For 2712/2712 co-relation queries the response was YES. [2021-08-13 07:42:31,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130040 conditions, 5098 events. 1912/5098 cut-off events. For 2712/2712 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 51388 event pairs, 97 based on Foata normal form. 1/5089 useless extension candidates. Maximal degree in co-relation 128860. Up to 3003 conditions per place. [2021-08-13 07:42:31,404 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 953 selfloop transitions, 104 changer transitions 398/1465 dead transitions. [2021-08-13 07:42:31,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1465 transitions, 108081 flow [2021-08-13 07:42:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:42:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:42:31,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 07:42:31,405 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 07:42:31,405 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 07:42:31,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 07:42:31,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:31,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 07:42:31,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:31,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:31,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:31,406 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 276 predicate places. [2021-08-13 07:42:31,407 INFO L482 AbstractCegarLoop]: Abstraction has has 315 places, 1465 transitions, 108081 flow [2021-08-13 07:42:31,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:31,407 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:31,407 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:31,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 07:42:31,407 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:31,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:31,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1917158512, now seen corresponding path program 37 times [2021-08-13 07:42:31,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:31,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138674738] [2021-08-13 07:42:31,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:31,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:31,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:31,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:31,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:31,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:31,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:31,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:31,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:31,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:31,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:31,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:31,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:42:31,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:31,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:31,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:31,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:31,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:42:31,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:42:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:31,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:31,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138674738] [2021-08-13 07:42:31,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138674738] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:31,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:31,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:42:31,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292405328] [2021-08-13 07:42:31,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:42:31,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:31,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:42:31,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:42:31,479 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:42:31,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 1465 transitions, 108081 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:31,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:31,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:42:31,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:40,846 INFO L129 PetriNetUnfolder]: 1947/5204 cut-off events. [2021-08-13 07:42:40,847 INFO L130 PetriNetUnfolder]: For 2799/2799 co-relation queries the response was YES. [2021-08-13 07:42:40,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136142 conditions, 5204 events. 1947/5204 cut-off events. For 2799/2799 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 52745 event pairs, 97 based on Foata normal form. 1/5195 useless extension candidates. Maximal degree in co-relation 134952. Up to 3072 conditions per place. [2021-08-13 07:42:40,905 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1019 selfloop transitions, 83 changer transitions 401/1513 dead transitions. [2021-08-13 07:42:40,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1513 transitions, 114639 flow [2021-08-13 07:42:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:42:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:42:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 07:42:40,906 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:42:40,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 07:42:40,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 07:42:40,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:40,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 07:42:40,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:40,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:40,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:40,907 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 284 predicate places. [2021-08-13 07:42:40,907 INFO L482 AbstractCegarLoop]: Abstraction has has 323 places, 1513 transitions, 114639 flow [2021-08-13 07:42:40,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:40,907 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:40,907 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:40,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 07:42:40,907 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:40,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:40,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1004688822, now seen corresponding path program 38 times [2021-08-13 07:42:40,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:40,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834980856] [2021-08-13 07:42:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:40,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:40,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:40,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:40,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:40,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:40,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:42:40,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:40,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:40,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:40,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:42:40,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:42:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:40,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:40,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834980856] [2021-08-13 07:42:40,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834980856] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:40,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:40,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:42:40,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364821854] [2021-08-13 07:42:40,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:42:40,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:40,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:42:40,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:42:40,976 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:42:40,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 1513 transitions, 114639 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:40,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:40,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:42:40,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:42:50,957 INFO L129 PetriNetUnfolder]: 1965/5292 cut-off events. [2021-08-13 07:42:50,957 INFO L130 PetriNetUnfolder]: For 2899/2899 co-relation queries the response was YES. [2021-08-13 07:42:50,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141468 conditions, 5292 events. 1965/5292 cut-off events. For 2899/2899 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 54059 event pairs, 98 based on Foata normal form. 1/5283 useless extension candidates. Maximal degree in co-relation 140235. Up to 3117 conditions per place. [2021-08-13 07:42:51,019 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 991 selfloop transitions, 141 changer transitions 410/1552 dead transitions. [2021-08-13 07:42:51,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1552 transitions, 120687 flow [2021-08-13 07:42:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:42:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:42:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-08-13 07:42:51,020 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-08-13 07:42:51,020 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-08-13 07:42:51,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-08-13 07:42:51,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:42:51,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-08-13 07:42:51,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.111111111111114) internal successors, (298), 9 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:51,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:51,021 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:51,021 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 292 predicate places. [2021-08-13 07:42:51,021 INFO L482 AbstractCegarLoop]: Abstraction has has 331 places, 1552 transitions, 120687 flow [2021-08-13 07:42:51,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:51,022 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:42:51,022 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:42:51,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 07:42:51,022 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:42:51,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:42:51,022 INFO L82 PathProgramCache]: Analyzing trace with hash 537517516, now seen corresponding path program 39 times [2021-08-13 07:42:51,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:42:51,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995545071] [2021-08-13 07:42:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:42:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:42:51,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:51,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:51,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:51,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:51,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:51,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:51,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:51,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:51,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:51,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:51,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:51,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:51,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:51,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:42:51,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:42:51,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:42:51,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:42:51,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:42:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:42:51,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:42:51,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995545071] [2021-08-13 07:42:51,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995545071] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:42:51,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:42:51,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:42:51,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905717962] [2021-08-13 07:42:51,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:42:51,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:42:51,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:42:51,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:42:51,102 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:42:51,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 1552 transitions, 120687 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:42:51,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:42:51,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:42:51,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:43:02,354 INFO L129 PetriNetUnfolder]: 1967/5319 cut-off events. [2021-08-13 07:43:02,354 INFO L130 PetriNetUnfolder]: For 2995/2995 co-relation queries the response was YES. [2021-08-13 07:43:02,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145368 conditions, 5319 events. 1967/5319 cut-off events. For 2995/2995 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 54497 event pairs, 98 based on Foata normal form. 1/5310 useless extension candidates. Maximal degree in co-relation 144100. Up to 3125 conditions per place. [2021-08-13 07:43:02,415 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 945 selfloop transitions, 166 changer transitions 439/1560 dead transitions. [2021-08-13 07:43:02,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 1560 transitions, 124411 flow [2021-08-13 07:43:02,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:43:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:43:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 333 transitions. [2021-08-13 07:43:02,417 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2021-08-13 07:43:02,417 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 333 transitions. [2021-08-13 07:43:02,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 333 transitions. [2021-08-13 07:43:02,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:43:02,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 333 transitions. [2021-08-13 07:43:02,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:02,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:02,418 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:02,418 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 301 predicate places. [2021-08-13 07:43:02,418 INFO L482 AbstractCegarLoop]: Abstraction has has 340 places, 1560 transitions, 124411 flow [2021-08-13 07:43:02,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:02,419 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:43:02,419 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:43:02,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 07:43:02,419 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:43:02,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:43:02,419 INFO L82 PathProgramCache]: Analyzing trace with hash 266684192, now seen corresponding path program 40 times [2021-08-13 07:43:02,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:43:02,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404018309] [2021-08-13 07:43:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:43:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:43:02,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:02,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:02,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:02,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:02,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:02,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:02,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:02,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:02,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:02,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:02,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:02,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:43:02,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:02,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:02,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:02,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:02,500 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:43:02,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:43:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:43:02,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:43:02,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404018309] [2021-08-13 07:43:02,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404018309] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:43:02,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:43:02,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:43:02,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041285734] [2021-08-13 07:43:02,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:43:02,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:43:02,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:43:02,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:43:02,503 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:43:02,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 1560 transitions, 124411 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:02,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:43:02,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:43:02,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:43:13,519 INFO L129 PetriNetUnfolder]: 1973/5363 cut-off events. [2021-08-13 07:43:13,519 INFO L130 PetriNetUnfolder]: For 3096/3096 co-relation queries the response was YES. [2021-08-13 07:43:13,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149908 conditions, 5363 events. 1973/5363 cut-off events. For 3096/3096 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 55158 event pairs, 97 based on Foata normal form. 1/5353 useless extension candidates. Maximal degree in co-relation 148623. Up to 3148 conditions per place. [2021-08-13 07:43:13,583 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1015 selfloop transitions, 106 changer transitions 452/1583 dead transitions. [2021-08-13 07:43:13,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1583 transitions, 129397 flow [2021-08-13 07:43:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:43:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:43:13,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-08-13 07:43:13,584 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:43:13,584 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-08-13 07:43:13,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-08-13 07:43:13,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:43:13,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-08-13 07:43:13,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:13,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:13,585 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:13,585 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 310 predicate places. [2021-08-13 07:43:13,586 INFO L482 AbstractCegarLoop]: Abstraction has has 349 places, 1583 transitions, 129397 flow [2021-08-13 07:43:13,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:13,586 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:43:13,586 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:43:13,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 07:43:13,586 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:43:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:43:13,586 INFO L82 PathProgramCache]: Analyzing trace with hash -675565692, now seen corresponding path program 41 times [2021-08-13 07:43:13,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:43:13,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156740574] [2021-08-13 07:43:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:43:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:43:13,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:13,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:13,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:13,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:13,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:13,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:13,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:13,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:13,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:13,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:13,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:13,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:43:13,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:13,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:13,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:13,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:13,667 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:43:13,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:43:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:43:13,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:43:13,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156740574] [2021-08-13 07:43:13,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156740574] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:43:13,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:43:13,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:43:13,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005599363] [2021-08-13 07:43:13,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:43:13,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:43:13,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:43:13,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:43:13,671 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:43:13,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1583 transitions, 129397 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:13,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:43:13,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:43:13,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:43:25,384 INFO L129 PetriNetUnfolder]: 1974/5400 cut-off events. [2021-08-13 07:43:25,384 INFO L130 PetriNetUnfolder]: For 3188/3188 co-relation queries the response was YES. [2021-08-13 07:43:25,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 154113 conditions, 5400 events. 1974/5400 cut-off events. For 3188/3188 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 55771 event pairs, 98 based on Foata normal form. 1/5391 useless extension candidates. Maximal degree in co-relation 152805. Up to 3162 conditions per place. [2021-08-13 07:43:25,446 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 962 selfloop transitions, 141 changer transitions 512/1625 dead transitions. [2021-08-13 07:43:25,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 1625 transitions, 136071 flow [2021-08-13 07:43:25,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:43:25,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:43:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-08-13 07:43:25,448 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-08-13 07:43:25,448 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-08-13 07:43:25,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-08-13 07:43:25,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:43:25,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-08-13 07:43:25,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:25,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:25,449 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:25,449 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 319 predicate places. [2021-08-13 07:43:25,449 INFO L482 AbstractCegarLoop]: Abstraction has has 358 places, 1625 transitions, 136071 flow [2021-08-13 07:43:25,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:25,449 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:43:25,450 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:43:25,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 07:43:25,450 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:43:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:43:25,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1225973418, now seen corresponding path program 42 times [2021-08-13 07:43:25,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:43:25,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617378369] [2021-08-13 07:43:25,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:43:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:43:25,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:25,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:25,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:25,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:25,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:25,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:25,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:25,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:25,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:25,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:25,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:25,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:25,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:25,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:25,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:25,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:25,517 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:43:25,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:43:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:43:25,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:43:25,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617378369] [2021-08-13 07:43:25,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617378369] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:43:25,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:43:25,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:43:25,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527240996] [2021-08-13 07:43:25,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:43:25,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:43:25,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:43:25,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:43:25,521 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:43:25,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 1625 transitions, 136071 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:25,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:43:25,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:43:25,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:43:37,498 INFO L129 PetriNetUnfolder]: 1976/5421 cut-off events. [2021-08-13 07:43:37,499 INFO L130 PetriNetUnfolder]: For 3289/3289 co-relation queries the response was YES. [2021-08-13 07:43:37,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158032 conditions, 5421 events. 1976/5421 cut-off events. For 3289/3289 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 56168 event pairs, 98 based on Foata normal form. 1/5412 useless extension candidates. Maximal degree in co-relation 156692. Up to 3169 conditions per place. [2021-08-13 07:43:37,565 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 990 selfloop transitions, 120 changer transitions 519/1639 dead transitions. [2021-08-13 07:43:37,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1639 transitions, 140505 flow [2021-08-13 07:43:37,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:43:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:43:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 07:43:37,566 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 07:43:37,566 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 07:43:37,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 07:43:37,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:43:37,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 07:43:37,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:37,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:37,568 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:37,568 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 327 predicate places. [2021-08-13 07:43:37,568 INFO L482 AbstractCegarLoop]: Abstraction has has 366 places, 1639 transitions, 140505 flow [2021-08-13 07:43:37,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:37,568 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:43:37,568 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:43:37,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 07:43:37,568 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:43:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:43:37,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1571260094, now seen corresponding path program 43 times [2021-08-13 07:43:37,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:43:37,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649625094] [2021-08-13 07:43:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:43:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:43:37,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:37,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:37,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:37,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:37,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:37,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:37,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:37,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:37,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:37,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:37,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:37,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:43:37,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:37,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:37,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:37,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:37,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:43:37,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:43:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:43:37,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:43:37,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649625094] [2021-08-13 07:43:37,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649625094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:43:37,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:43:37,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:43:37,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757008782] [2021-08-13 07:43:37,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:43:37,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:43:37,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:43:37,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:43:37,652 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:43:37,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1639 transitions, 140505 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:37,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:43:37,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:43:37,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:43:50,161 INFO L129 PetriNetUnfolder]: 1980/5453 cut-off events. [2021-08-13 07:43:50,162 INFO L130 PetriNetUnfolder]: For 3392/3392 co-relation queries the response was YES. [2021-08-13 07:43:50,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162281 conditions, 5453 events. 1980/5453 cut-off events. For 3392/3392 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 56611 event pairs, 102 based on Foata normal form. 1/5443 useless extension candidates. Maximal degree in co-relation 160931. Up to 3183 conditions per place. [2021-08-13 07:43:50,227 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 954 selfloop transitions, 163 changer transitions 526/1653 dead transitions. [2021-08-13 07:43:50,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1653 transitions, 144995 flow [2021-08-13 07:43:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:43:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:43:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-08-13 07:43:50,228 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-08-13 07:43:50,228 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-08-13 07:43:50,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-08-13 07:43:50,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:43:50,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-08-13 07:43:50,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:50,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:50,229 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:50,229 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 336 predicate places. [2021-08-13 07:43:50,229 INFO L482 AbstractCegarLoop]: Abstraction has has 375 places, 1653 transitions, 144995 flow [2021-08-13 07:43:50,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:43:50,229 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:43:50,229 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:43:50,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 07:43:50,229 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:43:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:43:50,230 INFO L82 PathProgramCache]: Analyzing trace with hash -913927208, now seen corresponding path program 44 times [2021-08-13 07:43:50,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:43:50,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9801283] [2021-08-13 07:43:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:43:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:43:50,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:50,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:50,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:50,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:50,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:50,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:50,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:50,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:50,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:50,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:43:50,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:50,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:50,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:50,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:50,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:43:50,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:43:50,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:43:50,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:43:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:43:50,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:43:50,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9801283] [2021-08-13 07:43:50,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9801283] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:43:50,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:43:50,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:43:50,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632721624] [2021-08-13 07:43:50,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:43:50,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:43:50,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:43:50,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:43:50,309 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:43:50,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1653 transitions, 144995 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:43:50,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:43:50,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:43:50,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:44:02,799 INFO L129 PetriNetUnfolder]: 1990/5499 cut-off events. [2021-08-13 07:44:02,799 INFO L130 PetriNetUnfolder]: For 3499/3499 co-relation queries the response was YES. [2021-08-13 07:44:02,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166967 conditions, 5499 events. 1990/5499 cut-off events. For 3499/3499 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 57363 event pairs, 102 based on Foata normal form. 1/5489 useless extension candidates. Maximal degree in co-relation 165596. Up to 3206 conditions per place. [2021-08-13 07:44:02,868 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1049 selfloop transitions, 74 changer transitions 539/1672 dead transitions. [2021-08-13 07:44:02,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1672 transitions, 149991 flow [2021-08-13 07:44:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:44:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:44:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-08-13 07:44:02,869 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-08-13 07:44:02,869 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-08-13 07:44:02,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-08-13 07:44:02,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:44:02,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-08-13 07:44:02,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:02,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:02,870 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:02,870 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 343 predicate places. [2021-08-13 07:44:02,871 INFO L482 AbstractCegarLoop]: Abstraction has has 382 places, 1672 transitions, 149991 flow [2021-08-13 07:44:02,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:44:02,871 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:44:02,871 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:44:02,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 07:44:02,871 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:44:02,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:44:02,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1203032748, now seen corresponding path program 45 times [2021-08-13 07:44:02,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:44:02,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594649627] [2021-08-13 07:44:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:44:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:44:02,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:02,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:02,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:02,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:02,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:02,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:02,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:02,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:02,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:02,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:02,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:02,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:02,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:02,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:02,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:02,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:02,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:44:02,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:44:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:44:02,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:44:02,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594649627] [2021-08-13 07:44:02,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594649627] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:44:02,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:44:02,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:44:02,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436773536] [2021-08-13 07:44:02,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:44:02,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:44:02,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:44:02,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:44:02,932 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:44:02,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1672 transitions, 149991 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:02,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:44:02,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:44:02,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:44:16,853 INFO L129 PetriNetUnfolder]: 1991/5516 cut-off events. [2021-08-13 07:44:16,854 INFO L130 PetriNetUnfolder]: For 3596/3596 co-relation queries the response was YES. [2021-08-13 07:44:16,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170902 conditions, 5516 events. 1991/5516 cut-off events. For 3596/3596 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 57603 event pairs, 102 based on Foata normal form. 1/5507 useless extension candidates. Maximal degree in co-relation 169499. Up to 3212 conditions per place. [2021-08-13 07:44:16,921 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 984 selfloop transitions, 145 changer transitions 539/1678 dead transitions. [2021-08-13 07:44:16,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1678 transitions, 153867 flow [2021-08-13 07:44:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:44:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:44:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 07:44:16,922 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 07:44:16,923 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 07:44:16,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 07:44:16,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:44:16,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 07:44:16,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:16,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:16,924 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:16,924 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 351 predicate places. [2021-08-13 07:44:16,924 INFO L482 AbstractCegarLoop]: Abstraction has has 390 places, 1678 transitions, 153867 flow [2021-08-13 07:44:16,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:16,924 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:44:16,924 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:44:16,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 07:44:16,924 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:44:16,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:44:16,924 INFO L82 PathProgramCache]: Analyzing trace with hash 525432470, now seen corresponding path program 46 times [2021-08-13 07:44:16,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:44:16,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692430805] [2021-08-13 07:44:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:44:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:44:16,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:16,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:16,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:16,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:16,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:16,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:16,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:16,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:16,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:16,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:16,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:16,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:16,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:16,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:17,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:17,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:17,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:44:17,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:44:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:44:17,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:44:17,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692430805] [2021-08-13 07:44:17,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692430805] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:44:17,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:44:17,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:44:17,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11999784] [2021-08-13 07:44:17,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:44:17,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:44:17,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:44:17,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:44:17,103 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:44:17,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 1678 transitions, 153867 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:17,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:44:17,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:44:17,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:44:30,658 INFO L129 PetriNetUnfolder]: 1992/5531 cut-off events. [2021-08-13 07:44:30,658 INFO L130 PetriNetUnfolder]: For 3698/3698 co-relation queries the response was YES. [2021-08-13 07:44:30,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174799 conditions, 5531 events. 1992/5531 cut-off events. For 3698/3698 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 57815 event pairs, 102 based on Foata normal form. 1/5521 useless extension candidates. Maximal degree in co-relation 173393. Up to 3217 conditions per place. [2021-08-13 07:44:30,725 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 925 selfloop transitions, 168 changer transitions 580/1683 dead transitions. [2021-08-13 07:44:30,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 1683 transitions, 157673 flow [2021-08-13 07:44:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:44:30,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:44:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 332 transitions. [2021-08-13 07:44:30,726 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7545454545454545 [2021-08-13 07:44:30,726 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 332 transitions. [2021-08-13 07:44:30,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 332 transitions. [2021-08-13 07:44:30,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:44:30,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 332 transitions. [2021-08-13 07:44:30,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.2) internal successors, (332), 10 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:30,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:30,727 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:30,727 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 360 predicate places. [2021-08-13 07:44:30,727 INFO L482 AbstractCegarLoop]: Abstraction has has 399 places, 1683 transitions, 157673 flow [2021-08-13 07:44:30,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:30,727 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:44:30,728 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:44:30,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-13 07:44:30,728 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:44:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:44:30,728 INFO L82 PathProgramCache]: Analyzing trace with hash -331082602, now seen corresponding path program 47 times [2021-08-13 07:44:30,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:44:30,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264454050] [2021-08-13 07:44:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:44:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:44:30,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:30,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:30,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:30,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:30,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:30,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:30,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:30,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:30,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:30,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:30,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:30,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:30,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:30,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:30,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:30,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:30,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:44:30,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:44:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:44:30,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:44:30,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264454050] [2021-08-13 07:44:30,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264454050] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:44:30,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:44:30,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:44:30,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538695486] [2021-08-13 07:44:30,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:44:30,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:44:30,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:44:30,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:44:30,797 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:44:30,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 1683 transitions, 157673 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:30,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:44:30,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:44:30,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:44:43,499 INFO L129 PetriNetUnfolder]: 1995/5560 cut-off events. [2021-08-13 07:44:43,499 INFO L130 PetriNetUnfolder]: For 3801/3801 co-relation queries the response was YES. [2021-08-13 07:44:43,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179189 conditions, 5560 events. 1995/5560 cut-off events. For 3801/3801 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 58329 event pairs, 102 based on Foata normal form. 1/5549 useless extension candidates. Maximal degree in co-relation 177770. Up to 3232 conditions per place. [2021-08-13 07:44:43,570 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 976 selfloop transitions, 111 changer transitions 601/1698 dead transitions. [2021-08-13 07:44:43,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1698 transitions, 162459 flow [2021-08-13 07:44:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:44:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:44:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-08-13 07:44:43,571 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-08-13 07:44:43,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-08-13 07:44:43,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-08-13 07:44:43,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:44:43,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-08-13 07:44:43,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:43,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:43,572 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:43,572 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 368 predicate places. [2021-08-13 07:44:43,572 INFO L482 AbstractCegarLoop]: Abstraction has has 407 places, 1698 transitions, 162459 flow [2021-08-13 07:44:43,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:43,572 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:44:43,572 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:44:43,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-13 07:44:43,573 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:44:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:44:43,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1896213522, now seen corresponding path program 48 times [2021-08-13 07:44:43,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:44:43,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884430631] [2021-08-13 07:44:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:44:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:44:43,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:43,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:43,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:43,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:43,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:43,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:43,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:43,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:43,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:43,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:43,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:43,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:44:43,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:43,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:43,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:43,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:43,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:44:43,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:44:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:44:43,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:44:43,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884430631] [2021-08-13 07:44:43,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884430631] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:44:43,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:44:43,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:44:43,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874517503] [2021-08-13 07:44:43,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:44:43,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:44:43,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:44:43,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:44:43,659 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:44:43,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 1698 transitions, 162459 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:43,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:44:43,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:44:43,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:44:56,934 INFO L129 PetriNetUnfolder]: 1997/5592 cut-off events. [2021-08-13 07:44:56,935 INFO L130 PetriNetUnfolder]: For 3919/3919 co-relation queries the response was YES. [2021-08-13 07:44:56,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183336 conditions, 5592 events. 1997/5592 cut-off events. For 3919/3919 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 58855 event pairs, 102 based on Foata normal form. 1/5581 useless extension candidates. Maximal degree in co-relation 181873. Up to 3241 conditions per place. [2021-08-13 07:44:57,005 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 976 selfloop transitions, 97 changer transitions 624/1707 dead transitions. [2021-08-13 07:44:57,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 1707 transitions, 166717 flow [2021-08-13 07:44:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:44:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:44:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-08-13 07:44:57,006 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:44:57,006 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-08-13 07:44:57,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-08-13 07:44:57,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:44:57,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-08-13 07:44:57,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:57,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:57,007 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:57,007 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 377 predicate places. [2021-08-13 07:44:57,007 INFO L482 AbstractCegarLoop]: Abstraction has has 416 places, 1707 transitions, 166717 flow [2021-08-13 07:44:57,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:57,007 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:44:57,007 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:44:57,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-13 07:44:57,008 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:44:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:44:57,008 INFO L82 PathProgramCache]: Analyzing trace with hash 417293454, now seen corresponding path program 49 times [2021-08-13 07:44:57,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:44:57,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12313557] [2021-08-13 07:44:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:44:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:44:57,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:57,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:57,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:57,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:57,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:57,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:57,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:57,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:57,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:57,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:57,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:57,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:44:57,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:57,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:44:57,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:44:57,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:44:57,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:44:57,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:44:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:44:57,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:44:57,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12313557] [2021-08-13 07:44:57,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12313557] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:44:57,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:44:57,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:44:57,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034153044] [2021-08-13 07:44:57,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:44:57,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:44:57,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:44:57,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:44:57,105 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:44:57,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 1707 transitions, 166717 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:44:57,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:44:57,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:44:57,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:45:11,448 INFO L129 PetriNetUnfolder]: 2000/5635 cut-off events. [2021-08-13 07:45:11,448 INFO L130 PetriNetUnfolder]: For 4041/4041 co-relation queries the response was YES. [2021-08-13 07:45:11,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187856 conditions, 5635 events. 2000/5635 cut-off events. For 4041/4041 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 59603 event pairs, 107 based on Foata normal form. 1/5624 useless extension candidates. Maximal degree in co-relation 186362. Up to 3257 conditions per place. [2021-08-13 07:45:11,523 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 926 selfloop transitions, 134 changer transitions 653/1723 dead transitions. [2021-08-13 07:45:11,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1723 transitions, 171711 flow [2021-08-13 07:45:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:45:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:45:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-08-13 07:45:11,524 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-08-13 07:45:11,524 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-08-13 07:45:11,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-08-13 07:45:11,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:45:11,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-08-13 07:45:11,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:11,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:11,525 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:11,525 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 386 predicate places. [2021-08-13 07:45:11,525 INFO L482 AbstractCegarLoop]: Abstraction has has 425 places, 1723 transitions, 171711 flow [2021-08-13 07:45:11,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:11,525 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:45:11,525 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:45:11,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-13 07:45:11,526 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:45:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:45:11,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2002461008, now seen corresponding path program 50 times [2021-08-13 07:45:11,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:45:11,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828229362] [2021-08-13 07:45:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:45:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:45:11,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:11,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:11,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:11,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:11,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:11,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:45:11,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:11,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:45:11,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:11,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:45:11,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:11,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:11,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:11,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:11,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:11,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:11,570 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:45:11,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:45:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:45:11,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:45:11,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828229362] [2021-08-13 07:45:11,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828229362] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:45:11,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:45:11,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 07:45:11,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861675097] [2021-08-13 07:45:11,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 07:45:11,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:45:11,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 07:45:11,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 07:45:11,574 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:45:11,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1723 transitions, 171711 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:11,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:45:11,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:45:11,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:45:26,740 INFO L129 PetriNetUnfolder]: 2023/5703 cut-off events. [2021-08-13 07:45:26,740 INFO L130 PetriNetUnfolder]: For 4175/4175 co-relation queries the response was YES. [2021-08-13 07:45:26,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193494 conditions, 5703 events. 2023/5703 cut-off events. For 4175/4175 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 60449 event pairs, 75 based on Foata normal form. 1/5692 useless extension candidates. Maximal degree in co-relation 191968. Up to 3429 conditions per place. [2021-08-13 07:45:26,816 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1046 selfloop transitions, 28 changer transitions 658/1742 dead transitions. [2021-08-13 07:45:26,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1742 transitions, 177095 flow [2021-08-13 07:45:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 07:45:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 07:45:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2021-08-13 07:45:26,816 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.762987012987013 [2021-08-13 07:45:26,817 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 235 transitions. [2021-08-13 07:45:26,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 235 transitions. [2021-08-13 07:45:26,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:45:26,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 235 transitions. [2021-08-13 07:45:26,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.57142857142857) internal successors, (235), 7 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:26,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:26,817 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 44.0) internal successors, (352), 8 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:26,817 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 392 predicate places. [2021-08-13 07:45:26,818 INFO L482 AbstractCegarLoop]: Abstraction has has 431 places, 1742 transitions, 177095 flow [2021-08-13 07:45:26,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:26,818 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:45:26,818 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:45:26,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-13 07:45:26,818 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:45:26,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:45:26,818 INFO L82 PathProgramCache]: Analyzing trace with hash -56511068, now seen corresponding path program 51 times [2021-08-13 07:45:26,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:45:26,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273244398] [2021-08-13 07:45:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:45:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:45:26,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:26,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:26,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:26,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:26,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:26,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:45:26,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:26,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:45:26,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:26,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:45:26,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:26,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:45:26,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:26,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:45:26,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:26,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:26,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:45:26,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:45:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:45:26,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:45:26,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273244398] [2021-08-13 07:45:26,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273244398] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:45:26,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:45:26,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:45:26,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244597758] [2021-08-13 07:45:26,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:45:26,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:45:26,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:45:26,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:45:26,890 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:45:26,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 1742 transitions, 177095 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:26,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:45:26,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:45:26,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:45:43,082 INFO L129 PetriNetUnfolder]: 2050/5768 cut-off events. [2021-08-13 07:45:43,083 INFO L130 PetriNetUnfolder]: For 4290/4290 co-relation queries the response was YES. [2021-08-13 07:45:43,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199440 conditions, 5768 events. 2050/5768 cut-off events. For 4290/4290 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 61251 event pairs, 67 based on Foata normal form. 1/5757 useless extension candidates. Maximal degree in co-relation 197889. Up to 3471 conditions per place. [2021-08-13 07:45:43,160 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1024 selfloop transitions, 70 changer transitions 662/1766 dead transitions. [2021-08-13 07:45:43,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1766 transitions, 183055 flow [2021-08-13 07:45:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:45:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:45:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 07:45:43,161 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 07:45:43,161 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 07:45:43,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 07:45:43,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:45:43,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 07:45:43,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:43,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:43,162 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:43,162 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 400 predicate places. [2021-08-13 07:45:43,162 INFO L482 AbstractCegarLoop]: Abstraction has has 439 places, 1766 transitions, 183055 flow [2021-08-13 07:45:43,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:45:43,162 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:45:43,162 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:45:43,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-13 07:45:43,163 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:45:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:45:43,163 INFO L82 PathProgramCache]: Analyzing trace with hash 2013022430, now seen corresponding path program 52 times [2021-08-13 07:45:43,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:45:43,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352128188] [2021-08-13 07:45:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:45:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:45:43,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:43,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:43,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:43,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:43,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:43,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:45:43,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:43,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:45:43,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:43,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:45:43,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:43,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:43,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:43,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:43,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:45:43,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:45:43,225 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:45:43,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:45:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:45:43,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:45:43,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352128188] [2021-08-13 07:45:43,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352128188] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:45:43,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:45:43,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 07:45:43,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700886391] [2021-08-13 07:45:43,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 07:45:43,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:45:43,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 07:45:43,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-13 07:45:43,228 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:45:43,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 1766 transitions, 183055 flow. Second operand has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:45:43,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:45:43,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:45:43,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:46:00,994 INFO L129 PetriNetUnfolder]: 2072/5835 cut-off events. [2021-08-13 07:46:00,994 INFO L130 PetriNetUnfolder]: For 4422/4422 co-relation queries the response was YES. [2021-08-13 07:46:01,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205584 conditions, 5835 events. 2072/5835 cut-off events. For 4422/4422 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 62135 event pairs, 69 based on Foata normal form. 1/5824 useless extension candidates. Maximal degree in co-relation 204023. Up to 3515 conditions per place. [2021-08-13 07:46:01,089 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1050 selfloop transitions, 61 changer transitions 668/1789 dead transitions. [2021-08-13 07:46:01,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 1789 transitions, 189030 flow [2021-08-13 07:46:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 07:46:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 07:46:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-08-13 07:46:01,090 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-08-13 07:46:01,090 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-08-13 07:46:01,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-08-13 07:46:01,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:46:01,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-08-13 07:46:01,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.5) internal successors, (268), 8 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:01,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:01,091 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:01,091 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 407 predicate places. [2021-08-13 07:46:01,091 INFO L482 AbstractCegarLoop]: Abstraction has has 446 places, 1789 transitions, 189030 flow [2021-08-13 07:46:01,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 27.25) internal successors, (218), 8 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) [2021-08-13 07:46:01,091 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:46:01,091 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:46:01,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-13 07:46:01,091 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:46:01,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:46:01,091 INFO L82 PathProgramCache]: Analyzing trace with hash 2123415800, now seen corresponding path program 53 times [2021-08-13 07:46:01,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:46:01,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126620170] [2021-08-13 07:46:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:46:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:46:01,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:01,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:01,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:01,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:01,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:01,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:46:01,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:01,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:46:01,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:01,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:46:01,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:01,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:01,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:01,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:46:01,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:01,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:01,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:46:01,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:46:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:46:01,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:46:01,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126620170] [2021-08-13 07:46:01,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126620170] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:46:01,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:46:01,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:46:01,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712496649] [2021-08-13 07:46:01,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:46:01,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:46:01,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:46:01,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:46:01,158 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:46:01,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1789 transitions, 189030 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:01,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:46:01,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:46:01,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:46:19,561 INFO L129 PetriNetUnfolder]: 2078/5861 cut-off events. [2021-08-13 07:46:19,562 INFO L130 PetriNetUnfolder]: For 4539/4539 co-relation queries the response was YES. [2021-08-13 07:46:19,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 209966 conditions, 5861 events. 2078/5861 cut-off events. For 4539/4539 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 62492 event pairs, 69 based on Foata normal form. 1/5850 useless extension candidates. Maximal degree in co-relation 208377. Up to 3525 conditions per place. [2021-08-13 07:46:19,643 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1011 selfloop transitions, 97 changer transitions 681/1799 dead transitions. [2021-08-13 07:46:19,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1799 transitions, 193668 flow [2021-08-13 07:46:19,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:46:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:46:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-08-13 07:46:19,644 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-08-13 07:46:19,644 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-08-13 07:46:19,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-08-13 07:46:19,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:46:19,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-08-13 07:46:19,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.22222222222222) internal successors, (299), 9 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:19,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:19,645 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:19,645 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 415 predicate places. [2021-08-13 07:46:19,645 INFO L482 AbstractCegarLoop]: Abstraction has has 454 places, 1799 transitions, 193668 flow [2021-08-13 07:46:19,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:19,645 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:46:19,645 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:46:19,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-13 07:46:19,646 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:46:19,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:46:19,646 INFO L82 PathProgramCache]: Analyzing trace with hash 530696372, now seen corresponding path program 54 times [2021-08-13 07:46:19,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:46:19,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339967971] [2021-08-13 07:46:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:46:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:46:19,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:19,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:19,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:19,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:19,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:19,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:46:19,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:19,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:46:19,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:19,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:46:19,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:19,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:46:19,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:19,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:46:19,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:19,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:19,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:46:19,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:46:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:46:19,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:46:19,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339967971] [2021-08-13 07:46:19,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339967971] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:46:19,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:46:19,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:46:19,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667657669] [2021-08-13 07:46:19,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:46:19,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:46:19,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:46:19,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:46:19,715 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:46:19,716 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 1799 transitions, 193668 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:19,716 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:46:19,716 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:46:19,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:46:39,553 INFO L129 PetriNetUnfolder]: 2119/5974 cut-off events. [2021-08-13 07:46:39,554 INFO L130 PetriNetUnfolder]: For 4681/4681 co-relation queries the response was YES. [2021-08-13 07:46:39,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217442 conditions, 5974 events. 2119/5974 cut-off events. For 4681/4681 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 63964 event pairs, 69 based on Foata normal form. 1/5963 useless extension candidates. Maximal degree in co-relation 215811. Up to 3590 conditions per place. [2021-08-13 07:46:39,635 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1083 selfloop transitions, 66 changer transitions 681/1840 dead transitions. [2021-08-13 07:46:39,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1840 transitions, 201756 flow [2021-08-13 07:46:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:46:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:46:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-08-13 07:46:39,636 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-08-13 07:46:39,636 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-08-13 07:46:39,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-08-13 07:46:39,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:46:39,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-08-13 07:46:39,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.888888888888886) internal successors, (296), 9 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:39,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:39,637 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:39,637 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 423 predicate places. [2021-08-13 07:46:39,637 INFO L482 AbstractCegarLoop]: Abstraction has has 462 places, 1840 transitions, 201756 flow [2021-08-13 07:46:39,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:39,637 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:46:39,637 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:46:39,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-13 07:46:39,637 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:46:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:46:39,638 INFO L82 PathProgramCache]: Analyzing trace with hash -563931126, now seen corresponding path program 55 times [2021-08-13 07:46:39,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:46:39,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257510736] [2021-08-13 07:46:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:46:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:46:39,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:39,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:39,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:39,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:39,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:39,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:46:39,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:39,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:46:39,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:39,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:46:39,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:39,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:46:39,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:39,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:46:39,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:46:39,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:46:39,701 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:46:39,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:46:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:46:39,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:46:39,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257510736] [2021-08-13 07:46:39,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257510736] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:46:39,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:46:39,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:46:39,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325272455] [2021-08-13 07:46:39,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:46:39,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:46:39,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:46:39,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:46:39,704 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:46:39,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1840 transitions, 201756 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:46:39,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:46:39,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:46:39,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:47:01,780 INFO L129 PetriNetUnfolder]: 2141/6054 cut-off events. [2021-08-13 07:47:01,780 INFO L130 PetriNetUnfolder]: For 4817/4817 co-relation queries the response was YES. [2021-08-13 07:47:01,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223688 conditions, 6054 events. 2141/6054 cut-off events. For 4817/4817 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 65111 event pairs, 72 based on Foata normal form. 1/6043 useless extension candidates. Maximal degree in co-relation 222020. Up to 3631 conditions per place. [2021-08-13 07:47:01,864 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1096 selfloop transitions, 81 changer transitions 701/1888 dead transitions. [2021-08-13 07:47:01,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 1888 transitions, 210792 flow [2021-08-13 07:47:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:47:01,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:47:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-08-13 07:47:01,865 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-08-13 07:47:01,865 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-08-13 07:47:01,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-08-13 07:47:01,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:47:01,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-08-13 07:47:01,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.0) internal successors, (297), 9 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:01,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:01,866 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:01,866 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 431 predicate places. [2021-08-13 07:47:01,866 INFO L482 AbstractCegarLoop]: Abstraction has has 470 places, 1888 transitions, 210792 flow [2021-08-13 07:47:01,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:01,866 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:47:01,866 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:47:01,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-13 07:47:01,867 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:47:01,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:47:01,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1895493834, now seen corresponding path program 56 times [2021-08-13 07:47:01,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:47:01,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124487543] [2021-08-13 07:47:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:47:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:47:01,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:01,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:01,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:01,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:01,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:01,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:47:01,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:01,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:47:01,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:01,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:47:01,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:01,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:01,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:01,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:01,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:01,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:01,938 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:47:01,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:47:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:47:01,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:47:01,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124487543] [2021-08-13 07:47:01,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124487543] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:47:01,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:47:01,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:47:01,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719158015] [2021-08-13 07:47:01,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:47:01,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:47:01,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:47:01,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:47:01,942 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:47:01,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 1888 transitions, 210792 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:01,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:47:01,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:47:01,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:47:26,305 INFO L129 PetriNetUnfolder]: 2183/6172 cut-off events. [2021-08-13 07:47:26,305 INFO L130 PetriNetUnfolder]: For 4998/4998 co-relation queries the response was YES. [2021-08-13 07:47:26,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230879 conditions, 6172 events. 2183/6172 cut-off events. For 4998/4998 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 66626 event pairs, 69 based on Foata normal form. 1/6161 useless extension candidates. Maximal degree in co-relation 229128. Up to 3686 conditions per place. [2021-08-13 07:47:26,395 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1102 selfloop transitions, 97 changer transitions 707/1916 dead transitions. [2021-08-13 07:47:26,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1916 transitions, 217770 flow [2021-08-13 07:47:26,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:47:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:47:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 07:47:26,396 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 07:47:26,396 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 07:47:26,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 07:47:26,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:47:26,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 07:47:26,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:26,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:26,397 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:26,397 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 439 predicate places. [2021-08-13 07:47:26,397 INFO L482 AbstractCegarLoop]: Abstraction has has 478 places, 1916 transitions, 217770 flow [2021-08-13 07:47:26,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:26,397 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:47:26,397 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:47:26,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-13 07:47:26,397 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:47:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:47:26,398 INFO L82 PathProgramCache]: Analyzing trace with hash 2069782428, now seen corresponding path program 57 times [2021-08-13 07:47:26,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:47:26,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231868642] [2021-08-13 07:47:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:47:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:47:26,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:26,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:26,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:26,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:26,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:26,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:47:26,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:26,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:47:26,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:26,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:47:26,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:26,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:47:26,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:26,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:47:26,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:26,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:26,478 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:47:26,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:47:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:47:26,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:47:26,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231868642] [2021-08-13 07:47:26,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231868642] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:47:26,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:47:26,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:47:26,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873526667] [2021-08-13 07:47:26,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:47:26,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:47:26,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:47:26,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:47:26,482 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:47:26,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1916 transitions, 217770 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:26,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:47:26,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:47:26,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:47:51,851 INFO L129 PetriNetUnfolder]: 2216/6278 cut-off events. [2021-08-13 07:47:51,852 INFO L130 PetriNetUnfolder]: For 5146/5146 co-relation queries the response was YES. [2021-08-13 07:47:51,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 239044 conditions, 6278 events. 2216/6278 cut-off events. For 5146/5146 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 68121 event pairs, 69 based on Foata normal form. 1/6266 useless extension candidates. Maximal degree in co-relation 237283. Up to 3757 conditions per place. [2021-08-13 07:47:51,974 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1067 selfloop transitions, 163 changer transitions 723/1963 dead transitions. [2021-08-13 07:47:51,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1963 transitions, 227059 flow [2021-08-13 07:47:51,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:47:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:47:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-08-13 07:47:51,975 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-08-13 07:47:51,975 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-08-13 07:47:51,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-08-13 07:47:51,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:47:51,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-08-13 07:47:51,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:51,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:51,976 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:51,976 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 448 predicate places. [2021-08-13 07:47:51,976 INFO L482 AbstractCegarLoop]: Abstraction has has 487 places, 1963 transitions, 227059 flow [2021-08-13 07:47:51,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:51,976 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:47:51,976 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:47:51,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-13 07:47:51,977 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:47:51,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:47:51,977 INFO L82 PathProgramCache]: Analyzing trace with hash 641038620, now seen corresponding path program 58 times [2021-08-13 07:47:51,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:47:51,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114018006] [2021-08-13 07:47:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:47:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:47:51,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:51,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:51,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:51,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:51,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:51,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:47:52,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:52,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:47:52,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:52,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:47:52,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:52,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:52,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:52,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:47:52,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:47:52,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:47:52,048 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:47:52,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:47:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:47:52,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:47:52,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114018006] [2021-08-13 07:47:52,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114018006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:47:52,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:47:52,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:47:52,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433735824] [2021-08-13 07:47:52,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:47:52,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:47:52,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:47:52,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:47:52,051 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:47:52,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 1963 transitions, 227059 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:47:52,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:47:52,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:47:52,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:48:20,832 INFO L129 PetriNetUnfolder]: 2221/6304 cut-off events. [2021-08-13 07:48:20,832 INFO L130 PetriNetUnfolder]: For 5272/5272 co-relation queries the response was YES. [2021-08-13 07:48:20,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243825 conditions, 6304 events. 2221/6304 cut-off events. For 5272/5272 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 68525 event pairs, 69 based on Foata normal form. 1/6292 useless extension candidates. Maximal degree in co-relation 242054. Up to 3769 conditions per place. [2021-08-13 07:48:20,937 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1078 selfloop transitions, 143 changer transitions 744/1975 dead transitions. [2021-08-13 07:48:20,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 1975 transitions, 232381 flow [2021-08-13 07:48:20,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:48:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:48:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-08-13 07:48:20,938 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-08-13 07:48:20,938 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-08-13 07:48:20,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-08-13 07:48:20,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:48:20,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-08-13 07:48:20,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:20,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:20,941 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:20,941 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 457 predicate places. [2021-08-13 07:48:20,942 INFO L482 AbstractCegarLoop]: Abstraction has has 496 places, 1975 transitions, 232381 flow [2021-08-13 07:48:20,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:20,942 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:48:20,942 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:48:20,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-13 07:48:20,942 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:48:20,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:48:20,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1171145366, now seen corresponding path program 59 times [2021-08-13 07:48:20,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:48:20,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340507896] [2021-08-13 07:48:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:48:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:48:20,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:20,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:48:20,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:20,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:48:20,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:20,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:48:20,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:20,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:48:20,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:20,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:48:20,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:20,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:48:21,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:21,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:48:21,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:21,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:48:21,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:48:21,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:48:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:48:21,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:48:21,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340507896] [2021-08-13 07:48:21,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340507896] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:48:21,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:48:21,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:48:21,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86348131] [2021-08-13 07:48:21,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:48:21,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:48:21,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:48:21,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:48:21,025 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:48:21,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 1975 transitions, 232381 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:21,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:48:21,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:48:21,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:48:48,778 INFO L129 PetriNetUnfolder]: 2229/6338 cut-off events. [2021-08-13 07:48:48,778 INFO L130 PetriNetUnfolder]: For 5396/5396 co-relation queries the response was YES. [2021-08-13 07:48:48,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249059 conditions, 6338 events. 2229/6338 cut-off events. For 5396/5396 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 69003 event pairs, 71 based on Foata normal form. 1/6325 useless extension candidates. Maximal degree in co-relation 247266. Up to 3788 conditions per place. [2021-08-13 07:48:48,869 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1129 selfloop transitions, 108 changer transitions 747/1994 dead transitions. [2021-08-13 07:48:48,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1994 transitions, 238591 flow [2021-08-13 07:48:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:48:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:48:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-08-13 07:48:48,870 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-08-13 07:48:48,870 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-08-13 07:48:48,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-08-13 07:48:48,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:48:48,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-08-13 07:48:48,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.8) internal successors, (328), 10 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:48,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:48,871 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:48,871 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 466 predicate places. [2021-08-13 07:48:48,871 INFO L482 AbstractCegarLoop]: Abstraction has has 505 places, 1994 transitions, 238591 flow [2021-08-13 07:48:48,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:48,871 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:48:48,871 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:48:48,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-13 07:48:48,871 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:48:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:48:48,872 INFO L82 PathProgramCache]: Analyzing trace with hash 18580558, now seen corresponding path program 60 times [2021-08-13 07:48:48,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:48:48,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376155051] [2021-08-13 07:48:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:48:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:48:48,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:48,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:48:48,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:48,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:48:48,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:48,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:48:48,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:48,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:48:48,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:48,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:48:48,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:48,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:48:48,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:48,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:48:48,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:48:48,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:48:48,956 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:48:48,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:48:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:48:48,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:48:48,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376155051] [2021-08-13 07:48:48,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376155051] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:48:48,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:48:48,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:48:48,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840668084] [2021-08-13 07:48:48,959 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:48:48,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:48:48,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:48:48,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:48:48,960 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:48:48,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 1994 transitions, 238591 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:48:48,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:48:48,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:48:48,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:49:13,426 INFO L129 PetriNetUnfolder]: 2242/6389 cut-off events. [2021-08-13 07:49:13,426 INFO L130 PetriNetUnfolder]: For 5545/5545 co-relation queries the response was YES. [2021-08-13 07:49:13,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254595 conditions, 6389 events. 2242/6389 cut-off events. For 5545/5545 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 69792 event pairs, 74 based on Foata normal form. 1/6377 useless extension candidates. Maximal degree in co-relation 252756. Up to 3811 conditions per place. [2021-08-13 07:49:13,519 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1095 selfloop transitions, 143 changer transitions 786/2034 dead transitions. [2021-08-13 07:49:13,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 2034 transitions, 247439 flow [2021-08-13 07:49:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:49:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 07:49:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-08-13 07:49:13,520 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-08-13 07:49:13,520 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-08-13 07:49:13,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-08-13 07:49:13,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:49:13,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-08-13 07:49:13,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.9) internal successors, (329), 10 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:13,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:13,521 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 44.0) internal successors, (484), 11 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:13,521 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 475 predicate places. [2021-08-13 07:49:13,521 INFO L482 AbstractCegarLoop]: Abstraction has has 514 places, 2034 transitions, 247439 flow [2021-08-13 07:49:13,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:13,521 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:49:13,521 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:49:13,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-13 07:49:13,522 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:49:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:49:13,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1722035282, now seen corresponding path program 61 times [2021-08-13 07:49:13,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:49:13,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140650910] [2021-08-13 07:49:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:49:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:49:13,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:13,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:49:13,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:13,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:49:13,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:13,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:49:13,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:13,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:49:13,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:13,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:49:13,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:13,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:49:13,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:13,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:49:13,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:13,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:49:13,585 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:49:13,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:49:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:49:13,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:49:13,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140650910] [2021-08-13 07:49:13,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140650910] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:49:13,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:49:13,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 07:49:13,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442841114] [2021-08-13 07:49:13,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 07:49:13,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:49:13,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 07:49:13,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-13 07:49:13,588 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:49:13,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 2034 transitions, 247439 flow. Second operand has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:13,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:49:13,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:49:13,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:49:39,355 INFO L129 PetriNetUnfolder]: 2272/6466 cut-off events. [2021-08-13 07:49:39,355 INFO L130 PetriNetUnfolder]: For 5694/5694 co-relation queries the response was YES. [2021-08-13 07:49:39,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262160 conditions, 6466 events. 2272/6466 cut-off events. For 5694/5694 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 70764 event pairs, 68 based on Foata normal form. 1/6453 useless extension candidates. Maximal degree in co-relation 260320. Up to 3866 conditions per place. [2021-08-13 07:49:39,449 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1174 selfloop transitions, 86 changer transitions 792/2062 dead transitions. [2021-08-13 07:49:39,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 2062 transitions, 254989 flow [2021-08-13 07:49:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 07:49:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 07:49:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-08-13 07:49:39,450 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-08-13 07:49:39,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-08-13 07:49:39,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-08-13 07:49:39,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:49:39,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-08-13 07:49:39,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:39,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:39,451 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:39,451 INFO L348 CegarLoopForPetriNet]: 39 programPoint places, 483 predicate places. [2021-08-13 07:49:39,451 INFO L482 AbstractCegarLoop]: Abstraction has has 522 places, 2062 transitions, 254989 flow [2021-08-13 07:49:39,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 27.0) internal successors, (243), 9 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:39,451 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:49:39,451 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 07:49:39,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-13 07:49:39,452 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:49:39,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:49:39,452 INFO L82 PathProgramCache]: Analyzing trace with hash 633990084, now seen corresponding path program 62 times [2021-08-13 07:49:39,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:49:39,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392118646] [2021-08-13 07:49:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:49:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:49:39,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:39,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:49:39,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:39,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:49:39,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:39,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:49:39,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:39,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:49:39,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:39,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:49:39,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:39,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 07:49:39,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:39,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-08-13 07:49:39,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:49:39,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:49:39,525 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-08-13 07:49:39,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 07:49:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:49:39,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:49:39,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392118646] [2021-08-13 07:49:39,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392118646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:49:39,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:49:39,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 07:49:39,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212274814] [2021-08-13 07:49:39,528 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-13 07:49:39,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:49:39,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-13 07:49:39,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-13 07:49:39,528 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-08-13 07:49:39,529 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 2062 transitions, 254989 flow. Second operand has 10 states, 10 states have (on average 26.8) internal successors, (268), 10 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 07:49:39,529 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:49:39,529 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-08-13 07:49:39,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-08-13 07:49:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 07:49:55,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-13 07:49:55,741 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-13 07:49:55,743 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 07:49:55,744 WARN L188 ceAbstractionStarter]: Timeout [2021-08-13 07:49:55,744 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 07:49:55 BasicIcfg [2021-08-13 07:49:55,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 07:49:55,745 INFO L168 Benchmark]: Toolchain (without parser) took 544600.48 ms. Allocated memory was 198.2 MB in the beginning and 5.0 GB in the end (delta: 4.8 GB). Free memory was 179.6 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.8 GB. Max. memory is 8.0 GB. [2021-08-13 07:49:55,745 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 198.2 MB. Free memory is still 180.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 07:49:55,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.14 ms. Allocated memory is still 198.2 MB. Free memory was 179.5 MB in the beginning and 178.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 07:49:55,745 INFO L168 Benchmark]: Boogie Preprocessor took 11.30 ms. Allocated memory is still 198.2 MB. Free memory was 178.1 MB in the beginning and 177.2 MB in the end (delta: 879.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-13 07:49:55,745 INFO L168 Benchmark]: RCFGBuilder took 205.51 ms. Allocated memory is still 198.2 MB. Free memory was 177.2 MB in the beginning and 168.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-08-13 07:49:55,745 INFO L168 Benchmark]: TraceAbstraction took 544351.95 ms. Allocated memory was 198.2 MB in the beginning and 5.0 GB in the end (delta: 4.8 GB). Free memory was 167.7 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.7 GB. Max. memory is 8.0 GB. [2021-08-13 07:49:55,746 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 0.13 ms. Allocated memory is still 198.2 MB. Free memory is still 180.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.14 ms. Allocated memory is still 198.2 MB. Free memory was 179.5 MB in the beginning and 178.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.30 ms. Allocated memory is still 198.2 MB. Free memory was 178.1 MB in the beginning and 177.2 MB in the end (delta: 879.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 205.51 ms. Allocated memory is still 198.2 MB. Free memory was 177.2 MB in the beginning and 168.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 544351.95 ms. Allocated memory was 198.2 MB in the beginning and 5.0 GB in the end (delta: 4.8 GB). Free memory was 167.7 MB in the beginning and 1.7 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (10states, 25/44 universal loopers) in iteration 64,while PetriNetUnfolder was constructing finite prefix that currently has 197413 conditions, 3713 events (1799/3712 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 33864 event pairs, 62 based on Foata normal form. 0/4420 useless extension candidates. Maximal degree in co-relation 197126. Up to 2824 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 6 procedures, 42 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 35.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 544146.9ms, OverallIterations: 64, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 538498.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 95.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1984 SDtfs, 1299 SDslu, 6693 SDs, 0 SdLazy, 17939 SolverSat, 445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7469.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 564 GetRequests, 74 SyntacticMatches, 62 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3346.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=254989occurred in iteration=63, InterpolantAutomatonStates: 546, 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: 52.2ms SsaConstructionTime, 184.3ms SatisfiabilityAnalysisTime, 4919.3ms InterpolantComputationTime, 1664 NumberOfCodeBlocks, 1664 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 1600 ConstructedInterpolants, 0 QuantifiedInterpolants, 11806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 64 InterpolantComputations, 64 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