/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/sum_invariant.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 08:18:04,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 08:18:04,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 08:18:04,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 08:18:04,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 08:18:04,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 08:18:04,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 08:18:04,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 08:18:04,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 08:18:04,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 08:18:04,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 08:18:04,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-06-13 08:18:04,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 08:18:04,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 08:18:04,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 08:18:04,861 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.epf [2021-06-13 08:18:04,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 08:18:04,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 08:18:04,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 08:18:04,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 08:18:04,887 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 08:18:04,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 08:18:04,887 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 08:18:04,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 08:18:04,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 08:18:04,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 08:18:04,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 08:18:04,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 08:18:04,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 08:18:04,888 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 08:18:04,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 08:18:04,888 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 08:18:04,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 08:18:04,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 08:18:04,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 08:18:04,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 08:18:04,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 08:18:04,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 08:18:04,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 08:18:04,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 08:18:04,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 08:18:04,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 08:18:04,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 08:18:04,890 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 08:18:04,890 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 08:18:04,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 08:18:05,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 08:18:05,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 08:18:05,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 08:18:05,204 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 08:18:05,204 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 08:18:05,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl [2021-06-13 08:18:05,205 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/sum_invariant.bpl' [2021-06-13 08:18:05,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 08:18:05,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 08:18:05,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 08:18:05,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 08:18:05,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 08:18:05,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/1) ... [2021-06-13 08:18:05,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/1) ... [2021-06-13 08:18:05,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 08:18:05,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 08:18:05,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 08:18:05,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 08:18:05,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/1) ... [2021-06-13 08:18:05,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/1) ... [2021-06-13 08:18:05,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/1) ... [2021-06-13 08:18:05,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/1) ... [2021-06-13 08:18:05,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/1) ... [2021-06-13 08:18:05,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/1) ... [2021-06-13 08:18:05,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/1) ... [2021-06-13 08:18:05,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 08:18:05,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 08:18:05,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 08:18:05,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 08:18:05,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (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 [2021-06-13 08:18:05,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 08:18:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 08:18:05,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 08:18:05,340 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-13 08:18:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-13 08:18:05,340 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-13 08:18:05,341 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 08:18:05,453 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 08:18:05,453 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 08:18:05,457 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:18:05 BoogieIcfgContainer [2021-06-13 08:18:05,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 08:18:05,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 08:18:05,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 08:18:05,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 08:18:05,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 08:18:05" (1/2) ... [2021-06-13 08:18:05,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790bc3d0 and model type sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 08:18:05, skipping insertion in model container [2021-06-13 08:18:05,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 08:18:05" (2/2) ... [2021-06-13 08:18:05,465 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_invariant.bpl [2021-06-13 08:18:05,474 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 08:18:05,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 08:18:05,475 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 08:18:05,500 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,500 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,500 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,501 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,501 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,501 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,502 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,502 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,502 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,502 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,502 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,503 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,503 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,503 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,504 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,504 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,504 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,504 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,505 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,505 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,505 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,505 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,506 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,506 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,508 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,513 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork1_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,514 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork2_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,515 WARN L313 ript$VariableManager]: TermVariabe ThreadThread1of1ForFork3_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 08:18:05,540 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-06-13 08:18:05,570 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-13 08:18:05,588 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 08:18:05,588 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 08:18:05,588 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 08:18:05,588 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 08:18:05,588 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 08:18:05,589 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 08:18:05,589 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 08:18:05,589 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 08:18:05,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 156 flow [2021-06-13 08:18:05,632 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2021-06-13 08:18:05,632 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-13 08:18:05,636 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 142 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. [2021-06-13 08:18:05,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 156 flow [2021-06-13 08:18:05,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 136 flow [2021-06-13 08:18:05,668 INFO L129 PetriNetUnfolder]: 17/53 cut-off events. [2021-06-13 08:18:05,668 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-13 08:18:05,668 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:05,669 INFO L255 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] [2021-06-13 08:18:05,669 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:05,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1761666906, now seen corresponding path program 1 times [2021-06-13 08:18:05,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:05,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707078707] [2021-06-13 08:18:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:05,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:05,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:18:05,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:05,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:18:05,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:05,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:18:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:05,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:05,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707078707] [2021-06-13 08:18:05,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707078707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:05,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:05,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:18:05,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100580148] [2021-06-13 08:18:05,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:18:05,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:05,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:18:05,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:18:05,877 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 44 [2021-06-13 08:18:05,879 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) [2021-06-13 08:18:05,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:05,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 44 [2021-06-13 08:18:05,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:05,915 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-06-13 08:18:05,915 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-06-13 08:18:05,916 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 72 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. [2021-06-13 08:18:05,917 INFO L132 encePairwiseOnDemand]: 40/44 looper letters, 1 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2021-06-13 08:18:05,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 110 flow [2021-06-13 08:18:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:18:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:18:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-06-13 08:18:05,932 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9242424242424242 [2021-06-13 08:18:05,933 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-06-13 08:18:05,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-06-13 08:18:05,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:05,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-06-13 08:18:05,941 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) [2021-06-13 08:18:05,948 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) [2021-06-13 08:18:05,948 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) [2021-06-13 08:18:05,950 INFO L185 Difference]: Start difference. First operand has 39 places, 38 transitions, 136 flow. Second operand 3 states and 122 transitions. [2021-06-13 08:18:05,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 110 flow [2021-06-13 08:18:05,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 82 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-06-13 08:18:05,960 INFO L241 Difference]: Finished difference. Result has 33 places, 32 transitions, 80 flow [2021-06-13 08:18:05,962 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2021-06-13 08:18:05,962 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2021-06-13 08:18:05,962 INFO L482 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 80 flow [2021-06-13 08:18:05,963 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) [2021-06-13 08:18:05,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:05,963 INFO L255 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] [2021-06-13 08:18:05,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 08:18:05,964 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash -472259698, now seen corresponding path program 1 times [2021-06-13 08:18:05,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:05,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940609017] [2021-06-13 08:18:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:06,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:18:06,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:18:06,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:18:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:06,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:06,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940609017] [2021-06-13 08:18:06,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940609017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:06,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:06,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:18:06,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13740674] [2021-06-13 08:18:06,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:18:06,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:06,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:18:06,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:18:06,046 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 44 [2021-06-13 08:18:06,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 80 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) [2021-06-13 08:18:06,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:06,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 44 [2021-06-13 08:18:06,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:06,075 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-06-13 08:18:06,075 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 08:18:06,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 28 events. 1/28 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2021-06-13 08:18:06,076 INFO L132 encePairwiseOnDemand]: 41/44 looper letters, 1 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2021-06-13 08:18:06,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 72 flow [2021-06-13 08:18:06,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:18:06,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:18:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-06-13 08:18:06,083 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-06-13 08:18:06,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-06-13 08:18:06,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-06-13 08:18:06,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:06,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-06-13 08:18:06,084 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) [2021-06-13 08:18:06,085 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) [2021-06-13 08:18:06,085 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) [2021-06-13 08:18:06,085 INFO L185 Difference]: Start difference. First operand has 33 places, 32 transitions, 80 flow. Second operand 3 states and 121 transitions. [2021-06-13 08:18:06,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 72 flow [2021-06-13 08:18:06,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 71 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:18:06,087 INFO L241 Difference]: Finished difference. Result has 34 places, 28 transitions, 69 flow [2021-06-13 08:18:06,087 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2021-06-13 08:18:06,088 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2021-06-13 08:18:06,088 INFO L482 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 69 flow [2021-06-13 08:18:06,088 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) [2021-06-13 08:18:06,088 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:06,088 INFO L255 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] [2021-06-13 08:18:06,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 08:18:06,089 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:06,089 INFO L82 PathProgramCache]: Analyzing trace with hash 594695198, now seen corresponding path program 1 times [2021-06-13 08:18:06,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:06,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293685262] [2021-06-13 08:18:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:06,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,227 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:06,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:06,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:06,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293685262] [2021-06-13 08:18:06,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293685262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:06,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:06,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 08:18:06,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972981108] [2021-06-13 08:18:06,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 08:18:06,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:06,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 08:18:06,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 08:18:06,234 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:06,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 69 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) [2021-06-13 08:18:06,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:06,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:06,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:06,470 INFO L129 PetriNetUnfolder]: 872/1598 cut-off events. [2021-06-13 08:18:06,470 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-06-13 08:18:06,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1598 events. 872/1598 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9344 event pairs, 246 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 1687. Up to 710 conditions per place. [2021-06-13 08:18:06,485 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 41 selfloop transitions, 21 changer transitions 0/72 dead transitions. [2021-06-13 08:18:06,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 72 transitions, 299 flow [2021-06-13 08:18:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 08:18:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 08:18:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2021-06-13 08:18:06,488 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-06-13 08:18:06,489 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 238 transitions. [2021-06-13 08:18:06,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 238 transitions. [2021-06-13 08:18:06,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:06,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 238 transitions. [2021-06-13 08:18:06,491 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) [2021-06-13 08:18:06,492 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) [2021-06-13 08:18:06,492 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) [2021-06-13 08:18:06,493 INFO L185 Difference]: Start difference. First operand has 34 places, 28 transitions, 69 flow. Second operand 7 states and 238 transitions. [2021-06-13 08:18:06,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 72 transitions, 299 flow [2021-06-13 08:18:06,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 72 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:18:06,495 INFO L241 Difference]: Finished difference. Result has 44 places, 48 transitions, 197 flow [2021-06-13 08:18:06,496 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2021-06-13 08:18:06,496 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2021-06-13 08:18:06,496 INFO L482 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 197 flow [2021-06-13 08:18:06,496 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) [2021-06-13 08:18:06,496 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:06,497 INFO L255 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] [2021-06-13 08:18:06,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 08:18:06,497 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:06,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:06,498 INFO L82 PathProgramCache]: Analyzing trace with hash -282444084, now seen corresponding path program 2 times [2021-06-13 08:18:06,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:06,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141103706] [2021-06-13 08:18:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:06,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:06,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:06,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:06,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:06,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:06,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141103706] [2021-06-13 08:18:06,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141103706] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:06,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:06,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:06,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375001462] [2021-06-13 08:18:06,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:06,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:06,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:06,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:06,654 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:06,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 197 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) [2021-06-13 08:18:06,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:06,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:06,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:06,929 INFO L129 PetriNetUnfolder]: 894/1675 cut-off events. [2021-06-13 08:18:06,929 INFO L130 PetriNetUnfolder]: For 502/502 co-relation queries the response was YES. [2021-06-13 08:18:06,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4548 conditions, 1675 events. 894/1675 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10008 event pairs, 253 based on Foata normal form. 1/1676 useless extension candidates. Maximal degree in co-relation 3103. Up to 664 conditions per place. [2021-06-13 08:18:06,944 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 43 selfloop transitions, 35 changer transitions 2/90 dead transitions. [2021-06-13 08:18:06,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 90 transitions, 488 flow [2021-06-13 08:18:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-06-13 08:18:06,947 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-06-13 08:18:06,947 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-06-13 08:18:06,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-06-13 08:18:06,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:06,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-06-13 08:18:06,948 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) [2021-06-13 08:18:06,949 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) [2021-06-13 08:18:06,950 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) [2021-06-13 08:18:06,950 INFO L185 Difference]: Start difference. First operand has 44 places, 48 transitions, 197 flow. Second operand 8 states and 269 transitions. [2021-06-13 08:18:06,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 90 transitions, 488 flow [2021-06-13 08:18:06,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:06,960 INFO L241 Difference]: Finished difference. Result has 54 places, 62 transitions, 364 flow [2021-06-13 08:18:06,961 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=54, PETRI_TRANSITIONS=62} [2021-06-13 08:18:06,961 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2021-06-13 08:18:06,961 INFO L482 AbstractCegarLoop]: Abstraction has has 54 places, 62 transitions, 364 flow [2021-06-13 08:18:06,961 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) [2021-06-13 08:18:06,961 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:06,962 INFO L255 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] [2021-06-13 08:18:06,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 08:18:06,962 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:06,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:06,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1516913040, now seen corresponding path program 3 times [2021-06-13 08:18:06,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:06,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621342108] [2021-06-13 08:18:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:06,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:06,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:06,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:07,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,041 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:07,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:07,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:07,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621342108] [2021-06-13 08:18:07,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621342108] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:07,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:07,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:07,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152197589] [2021-06-13 08:18:07,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:07,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:07,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:07,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:07,047 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:07,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 62 transitions, 364 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) [2021-06-13 08:18:07,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:07,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:07,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:07,339 INFO L129 PetriNetUnfolder]: 913/1754 cut-off events. [2021-06-13 08:18:07,340 INFO L130 PetriNetUnfolder]: For 1421/1421 co-relation queries the response was YES. [2021-06-13 08:18:07,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5809 conditions, 1754 events. 913/1754 cut-off events. For 1421/1421 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10822 event pairs, 260 based on Foata normal form. 1/1755 useless extension candidates. Maximal degree in co-relation 3835. Up to 704 conditions per place. [2021-06-13 08:18:07,356 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 57 selfloop transitions, 35 changer transitions 2/104 dead transitions. [2021-06-13 08:18:07,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 705 flow [2021-06-13 08:18:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:07,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-06-13 08:18:07,359 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-06-13 08:18:07,359 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-06-13 08:18:07,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-06-13 08:18:07,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:07,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-06-13 08:18:07,360 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) [2021-06-13 08:18:07,361 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) [2021-06-13 08:18:07,362 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) [2021-06-13 08:18:07,362 INFO L185 Difference]: Start difference. First operand has 54 places, 62 transitions, 364 flow. Second operand 8 states and 269 transitions. [2021-06-13 08:18:07,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 705 flow [2021-06-13 08:18:07,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 104 transitions, 656 flow, removed 15 selfloop flow, removed 3 redundant places. [2021-06-13 08:18:07,384 INFO L241 Difference]: Finished difference. Result has 61 places, 76 transitions, 504 flow [2021-06-13 08:18:07,384 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=504, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2021-06-13 08:18:07,384 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2021-06-13 08:18:07,384 INFO L482 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 504 flow [2021-06-13 08:18:07,384 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) [2021-06-13 08:18:07,385 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:07,385 INFO L255 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] [2021-06-13 08:18:07,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 08:18:07,385 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:07,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:07,386 INFO L82 PathProgramCache]: Analyzing trace with hash -741775984, now seen corresponding path program 4 times [2021-06-13 08:18:07,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:07,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574487789] [2021-06-13 08:18:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:07,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:07,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,510 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:07,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:07,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:07,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574487789] [2021-06-13 08:18:07,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574487789] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:07,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:07,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:07,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790958882] [2021-06-13 08:18:07,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:07,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:07,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:07,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:07,518 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:07,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 504 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) [2021-06-13 08:18:07,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:07,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:07,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:07,803 INFO L129 PetriNetUnfolder]: 937/1855 cut-off events. [2021-06-13 08:18:07,803 INFO L130 PetriNetUnfolder]: For 1908/1908 co-relation queries the response was YES. [2021-06-13 08:18:07,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6508 conditions, 1855 events. 937/1855 cut-off events. For 1908/1908 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11958 event pairs, 261 based on Foata normal form. 1/1856 useless extension candidates. Maximal degree in co-relation 5076. Up to 717 conditions per place. [2021-06-13 08:18:07,819 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 72 selfloop transitions, 35 changer transitions 2/119 dead transitions. [2021-06-13 08:18:07,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 119 transitions, 889 flow [2021-06-13 08:18:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2021-06-13 08:18:07,821 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-06-13 08:18:07,821 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 270 transitions. [2021-06-13 08:18:07,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 270 transitions. [2021-06-13 08:18:07,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:07,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 270 transitions. [2021-06-13 08:18:07,822 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) [2021-06-13 08:18:07,823 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) [2021-06-13 08:18:07,823 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) [2021-06-13 08:18:07,823 INFO L185 Difference]: Start difference. First operand has 61 places, 76 transitions, 504 flow. Second operand 8 states and 270 transitions. [2021-06-13 08:18:07,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 119 transitions, 889 flow [2021-06-13 08:18:07,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 879 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:07,840 INFO L241 Difference]: Finished difference. Result has 71 places, 90 transitions, 689 flow [2021-06-13 08:18:07,840 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=689, PETRI_PLACES=71, PETRI_TRANSITIONS=90} [2021-06-13 08:18:07,841 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2021-06-13 08:18:07,841 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 90 transitions, 689 flow [2021-06-13 08:18:07,841 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) [2021-06-13 08:18:07,841 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:07,841 INFO L255 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] [2021-06-13 08:18:07,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 08:18:07,841 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:07,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:07,842 INFO L82 PathProgramCache]: Analyzing trace with hash -505636086, now seen corresponding path program 5 times [2021-06-13 08:18:07,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:07,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495563393] [2021-06-13 08:18:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:07,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:07,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:07,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:07,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:07,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:07,940 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:07,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:07,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:07,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495563393] [2021-06-13 08:18:07,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495563393] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:07,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:07,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:07,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891764046] [2021-06-13 08:18:07,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:07,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:07,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:07,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:07,956 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:07,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 90 transitions, 689 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) [2021-06-13 08:18:07,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:07,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:07,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:08,343 INFO L129 PetriNetUnfolder]: 1033/2112 cut-off events. [2021-06-13 08:18:08,343 INFO L130 PetriNetUnfolder]: For 3299/3299 co-relation queries the response was YES. [2021-06-13 08:18:08,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8326 conditions, 2112 events. 1033/2112 cut-off events. For 3299/3299 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14531 event pairs, 195 based on Foata normal form. 1/2112 useless extension candidates. Maximal degree in co-relation 6238. Up to 1125 conditions per place. [2021-06-13 08:18:08,363 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 100 selfloop transitions, 55 changer transitions 1/166 dead transitions. [2021-06-13 08:18:08,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 166 transitions, 1530 flow [2021-06-13 08:18:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:18:08,364 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:18:08,365 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:18:08,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:18:08,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:08,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:18:08,366 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) [2021-06-13 08:18:08,367 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) [2021-06-13 08:18:08,367 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) [2021-06-13 08:18:08,367 INFO L185 Difference]: Start difference. First operand has 71 places, 90 transitions, 689 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:18:08,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 166 transitions, 1530 flow [2021-06-13 08:18:08,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 166 transitions, 1498 flow, removed 16 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:08,392 INFO L241 Difference]: Finished difference. Result has 85 places, 139 transitions, 1366 flow [2021-06-13 08:18:08,392 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1366, PETRI_PLACES=85, PETRI_TRANSITIONS=139} [2021-06-13 08:18:08,393 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2021-06-13 08:18:08,393 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 139 transitions, 1366 flow [2021-06-13 08:18:08,394 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) [2021-06-13 08:18:08,394 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:08,394 INFO L255 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] [2021-06-13 08:18:08,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 08:18:08,394 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:08,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:08,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1304718998, now seen corresponding path program 6 times [2021-06-13 08:18:08,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:08,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488071164] [2021-06-13 08:18:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:08,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:08,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:08,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:08,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:08,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:08,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:08,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:08,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:08,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:08,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:08,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:08,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488071164] [2021-06-13 08:18:08,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488071164] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:08,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:08,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:08,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496942952] [2021-06-13 08:18:08,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:08,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:08,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:08,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:08,498 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:08,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 139 transitions, 1366 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) [2021-06-13 08:18:08,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:08,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:08,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:08,859 INFO L129 PetriNetUnfolder]: 1035/2148 cut-off events. [2021-06-13 08:18:08,859 INFO L130 PetriNetUnfolder]: For 5444/5444 co-relation queries the response was YES. [2021-06-13 08:18:08,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9459 conditions, 2148 events. 1035/2148 cut-off events. For 5444/5444 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 14995 event pairs, 194 based on Foata normal form. 1/2148 useless extension candidates. Maximal degree in co-relation 8536. Up to 1140 conditions per place. [2021-06-13 08:18:08,885 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 118 selfloop transitions, 49 changer transitions 7/184 dead transitions. [2021-06-13 08:18:08,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 184 transitions, 1961 flow [2021-06-13 08:18:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:08,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-06-13 08:18:08,887 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-06-13 08:18:08,887 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-06-13 08:18:08,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-06-13 08:18:08,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:08,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-06-13 08:18:08,888 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) [2021-06-13 08:18:08,889 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) [2021-06-13 08:18:08,889 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) [2021-06-13 08:18:08,889 INFO L185 Difference]: Start difference. First operand has 85 places, 139 transitions, 1366 flow. Second operand 8 states and 268 transitions. [2021-06-13 08:18:08,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 184 transitions, 1961 flow [2021-06-13 08:18:08,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 184 transitions, 1907 flow, removed 27 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:08,926 INFO L241 Difference]: Finished difference. Result has 98 places, 152 transitions, 1622 flow [2021-06-13 08:18:08,927 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1622, PETRI_PLACES=98, PETRI_TRANSITIONS=152} [2021-06-13 08:18:08,927 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2021-06-13 08:18:08,927 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 152 transitions, 1622 flow [2021-06-13 08:18:08,927 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) [2021-06-13 08:18:08,927 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:08,927 INFO L255 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] [2021-06-13 08:18:08,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 08:18:08,928 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:08,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1716643302, now seen corresponding path program 7 times [2021-06-13 08:18:08,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:08,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322721496] [2021-06-13 08:18:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:08,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:08,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:08,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:09,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:09,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:09,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,066 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:09,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:09,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:09,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322721496] [2021-06-13 08:18:09,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322721496] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:09,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:09,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:09,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320275441] [2021-06-13 08:18:09,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:09,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:09,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:09,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:09,073 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:09,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 152 transitions, 1622 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) [2021-06-13 08:18:09,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:09,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:09,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:09,485 INFO L129 PetriNetUnfolder]: 1063/2225 cut-off events. [2021-06-13 08:18:09,485 INFO L130 PetriNetUnfolder]: For 8148/8148 co-relation queries the response was YES. [2021-06-13 08:18:09,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10752 conditions, 2225 events. 1063/2225 cut-off events. For 8148/8148 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 15782 event pairs, 195 based on Foata normal form. 1/2224 useless extension candidates. Maximal degree in co-relation 9722. Up to 1146 conditions per place. [2021-06-13 08:18:09,520 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 119 selfloop transitions, 69 changer transitions 7/205 dead transitions. [2021-06-13 08:18:09,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 205 transitions, 2380 flow [2021-06-13 08:18:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:18:09,522 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:18:09,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:18:09,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:18:09,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:09,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:18:09,523 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) [2021-06-13 08:18:09,524 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) [2021-06-13 08:18:09,524 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) [2021-06-13 08:18:09,524 INFO L185 Difference]: Start difference. First operand has 98 places, 152 transitions, 1622 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:18:09,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 205 transitions, 2380 flow [2021-06-13 08:18:09,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 205 transitions, 2346 flow, removed 17 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:09,579 INFO L241 Difference]: Finished difference. Result has 111 places, 172 transitions, 2043 flow [2021-06-13 08:18:09,579 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2043, PETRI_PLACES=111, PETRI_TRANSITIONS=172} [2021-06-13 08:18:09,580 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2021-06-13 08:18:09,580 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 172 transitions, 2043 flow [2021-06-13 08:18:09,580 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) [2021-06-13 08:18:09,580 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:09,580 INFO L255 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] [2021-06-13 08:18:09,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 08:18:09,580 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:09,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:09,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1843203300, now seen corresponding path program 8 times [2021-06-13 08:18:09,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:09,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520725294] [2021-06-13 08:18:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:09,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:09,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:09,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:09,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:09,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:09,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:09,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:09,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520725294] [2021-06-13 08:18:09,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520725294] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:09,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:09,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:09,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790718411] [2021-06-13 08:18:09,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:09,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:09,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:09,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:09,694 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:09,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 172 transitions, 2043 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) [2021-06-13 08:18:09,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:09,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:09,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:10,123 INFO L129 PetriNetUnfolder]: 1072/2239 cut-off events. [2021-06-13 08:18:10,123 INFO L130 PetriNetUnfolder]: For 11088/11088 co-relation queries the response was YES. [2021-06-13 08:18:10,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11863 conditions, 2239 events. 1072/2239 cut-off events. For 11088/11088 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 15924 event pairs, 250 based on Foata normal form. 1/2240 useless extension candidates. Maximal degree in co-relation 11100. Up to 764 conditions per place. [2021-06-13 08:18:10,160 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 109 selfloop transitions, 91 changer transitions 5/215 dead transitions. [2021-06-13 08:18:10,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 215 transitions, 2740 flow [2021-06-13 08:18:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-06-13 08:18:10,162 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-06-13 08:18:10,162 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-06-13 08:18:10,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-06-13 08:18:10,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:10,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-06-13 08:18:10,163 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) [2021-06-13 08:18:10,165 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) [2021-06-13 08:18:10,165 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) [2021-06-13 08:18:10,165 INFO L185 Difference]: Start difference. First operand has 111 places, 172 transitions, 2043 flow. Second operand 9 states and 301 transitions. [2021-06-13 08:18:10,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 215 transitions, 2740 flow [2021-06-13 08:18:10,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 215 transitions, 2586 flow, removed 53 selfloop flow, removed 4 redundant places. [2021-06-13 08:18:10,251 INFO L241 Difference]: Finished difference. Result has 121 places, 181 transitions, 2351 flow [2021-06-13 08:18:10,252 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2351, PETRI_PLACES=121, PETRI_TRANSITIONS=181} [2021-06-13 08:18:10,253 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 82 predicate places. [2021-06-13 08:18:10,253 INFO L482 AbstractCegarLoop]: Abstraction has has 121 places, 181 transitions, 2351 flow [2021-06-13 08:18:10,253 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) [2021-06-13 08:18:10,253 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:10,253 INFO L255 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] [2021-06-13 08:18:10,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 08:18:10,254 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:10,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:10,255 INFO L82 PathProgramCache]: Analyzing trace with hash 126530640, now seen corresponding path program 9 times [2021-06-13 08:18:10,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:10,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747888634] [2021-06-13 08:18:10,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:10,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:10,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:10,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:10,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:10,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:10,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:10,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:10,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:10,354 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:10,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:10,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:10,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747888634] [2021-06-13 08:18:10,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747888634] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:10,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:10,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:10,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544629170] [2021-06-13 08:18:10,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:10,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:10,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:10,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:10,361 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:10,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 181 transitions, 2351 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) [2021-06-13 08:18:10,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:10,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:10,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:10,763 INFO L129 PetriNetUnfolder]: 1080/2266 cut-off events. [2021-06-13 08:18:10,763 INFO L130 PetriNetUnfolder]: For 13173/13173 co-relation queries the response was YES. [2021-06-13 08:18:10,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12975 conditions, 2266 events. 1080/2266 cut-off events. For 13173/13173 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16169 event pairs, 205 based on Foata normal form. 1/2266 useless extension candidates. Maximal degree in co-relation 12223. Up to 1139 conditions per place. [2021-06-13 08:18:10,795 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 164 selfloop transitions, 65 changer transitions 11/250 dead transitions. [2021-06-13 08:18:10,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 250 transitions, 3699 flow [2021-06-13 08:18:10,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-06-13 08:18:10,796 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-06-13 08:18:10,797 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-06-13 08:18:10,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-06-13 08:18:10,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:10,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-06-13 08:18:10,798 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) [2021-06-13 08:18:10,798 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) [2021-06-13 08:18:10,798 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) [2021-06-13 08:18:10,799 INFO L185 Difference]: Start difference. First operand has 121 places, 181 transitions, 2351 flow. Second operand 8 states and 268 transitions. [2021-06-13 08:18:10,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 250 transitions, 3699 flow [2021-06-13 08:18:10,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 250 transitions, 3522 flow, removed 23 selfloop flow, removed 4 redundant places. [2021-06-13 08:18:10,945 INFO L241 Difference]: Finished difference. Result has 130 places, 214 transitions, 3077 flow [2021-06-13 08:18:10,946 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3077, PETRI_PLACES=130, PETRI_TRANSITIONS=214} [2021-06-13 08:18:10,946 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2021-06-13 08:18:10,946 INFO L482 AbstractCegarLoop]: Abstraction has has 130 places, 214 transitions, 3077 flow [2021-06-13 08:18:10,946 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) [2021-06-13 08:18:10,946 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:10,946 INFO L255 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] [2021-06-13 08:18:10,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 08:18:10,947 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:10,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:10,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1245384288, now seen corresponding path program 10 times [2021-06-13 08:18:10,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:10,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013502722] [2021-06-13 08:18:10,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:10,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:10,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:10,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:10,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:10,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:11,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:11,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:11,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:11,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:11,055 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:11,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:11,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:11,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013502722] [2021-06-13 08:18:11,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013502722] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:11,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:11,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:11,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908233281] [2021-06-13 08:18:11,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:11,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:11,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:11,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:11,063 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:11,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 214 transitions, 3077 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) [2021-06-13 08:18:11,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:11,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:11,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:11,614 INFO L129 PetriNetUnfolder]: 1095/2356 cut-off events. [2021-06-13 08:18:11,614 INFO L130 PetriNetUnfolder]: For 15649/15649 co-relation queries the response was YES. [2021-06-13 08:18:11,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13762 conditions, 2356 events. 1095/2356 cut-off events. For 15649/15649 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 17465 event pairs, 218 based on Foata normal form. 1/2356 useless extension candidates. Maximal degree in co-relation 12958. Up to 1086 conditions per place. [2021-06-13 08:18:11,643 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 155 selfloop transitions, 99 changer transitions 8/272 dead transitions. [2021-06-13 08:18:11,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 272 transitions, 4114 flow [2021-06-13 08:18:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:11,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:11,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-06-13 08:18:11,645 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-06-13 08:18:11,645 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-06-13 08:18:11,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-06-13 08:18:11,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:11,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-06-13 08:18:11,646 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) [2021-06-13 08:18:11,648 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) [2021-06-13 08:18:11,649 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) [2021-06-13 08:18:11,649 INFO L185 Difference]: Start difference. First operand has 130 places, 214 transitions, 3077 flow. Second operand 9 states and 299 transitions. [2021-06-13 08:18:11,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 272 transitions, 4114 flow [2021-06-13 08:18:11,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 272 transitions, 3999 flow, removed 35 selfloop flow, removed 2 redundant places. [2021-06-13 08:18:11,771 INFO L241 Difference]: Finished difference. Result has 142 places, 237 transitions, 3653 flow [2021-06-13 08:18:11,771 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3653, PETRI_PLACES=142, PETRI_TRANSITIONS=237} [2021-06-13 08:18:11,771 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 103 predicate places. [2021-06-13 08:18:11,771 INFO L482 AbstractCegarLoop]: Abstraction has has 142 places, 237 transitions, 3653 flow [2021-06-13 08:18:11,772 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) [2021-06-13 08:18:11,772 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:11,772 INFO L255 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] [2021-06-13 08:18:11,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 08:18:11,772 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:11,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:11,773 INFO L82 PathProgramCache]: Analyzing trace with hash -120843306, now seen corresponding path program 11 times [2021-06-13 08:18:11,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:11,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299364821] [2021-06-13 08:18:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:11,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:11,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:11,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:11,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:11,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:11,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:11,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:11,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:11,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:11,848 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:11,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:11,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:11,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299364821] [2021-06-13 08:18:11,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299364821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:11,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:11,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:11,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972722121] [2021-06-13 08:18:11,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:11,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:11,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:11,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:11,859 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:11,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 237 transitions, 3653 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) [2021-06-13 08:18:11,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:11,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:11,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:12,372 INFO L129 PetriNetUnfolder]: 1099/2399 cut-off events. [2021-06-13 08:18:12,372 INFO L130 PetriNetUnfolder]: For 17545/17545 co-relation queries the response was YES. [2021-06-13 08:18:12,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14855 conditions, 2399 events. 1099/2399 cut-off events. For 17545/17545 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 18037 event pairs, 190 based on Foata normal form. 1/2398 useless extension candidates. Maximal degree in co-relation 13895. Up to 1321 conditions per place. [2021-06-13 08:18:12,408 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 202 selfloop transitions, 61 changer transitions 0/273 dead transitions. [2021-06-13 08:18:12,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 273 transitions, 4486 flow [2021-06-13 08:18:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:12,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-06-13 08:18:12,410 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-06-13 08:18:12,410 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-06-13 08:18:12,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-06-13 08:18:12,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:12,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-06-13 08:18:12,411 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) [2021-06-13 08:18:12,412 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) [2021-06-13 08:18:12,413 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) [2021-06-13 08:18:12,413 INFO L185 Difference]: Start difference. First operand has 142 places, 237 transitions, 3653 flow. Second operand 8 states and 267 transitions. [2021-06-13 08:18:12,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 273 transitions, 4486 flow [2021-06-13 08:18:12,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 273 transitions, 4266 flow, removed 76 selfloop flow, removed 4 redundant places. [2021-06-13 08:18:12,561 INFO L241 Difference]: Finished difference. Result has 148 places, 249 transitions, 3859 flow [2021-06-13 08:18:12,562 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3469, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3859, PETRI_PLACES=148, PETRI_TRANSITIONS=249} [2021-06-13 08:18:12,562 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 109 predicate places. [2021-06-13 08:18:12,562 INFO L482 AbstractCegarLoop]: Abstraction has has 148 places, 249 transitions, 3859 flow [2021-06-13 08:18:12,562 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) [2021-06-13 08:18:12,562 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:12,562 INFO L255 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] [2021-06-13 08:18:12,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-13 08:18:12,562 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:12,563 INFO L82 PathProgramCache]: Analyzing trace with hash -306080156, now seen corresponding path program 12 times [2021-06-13 08:18:12,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:12,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141597451] [2021-06-13 08:18:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:12,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:12,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:12,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:12,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:12,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:12,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:12,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:12,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:12,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:12,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:12,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:12,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:12,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:12,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:12,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:12,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:12,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:12,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:12,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:12,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141597451] [2021-06-13 08:18:12,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141597451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:12,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:12,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:12,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841158103] [2021-06-13 08:18:12,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:12,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:12,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:12,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:12,646 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:12,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 249 transitions, 3859 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) [2021-06-13 08:18:12,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:12,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:12,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:13,167 INFO L129 PetriNetUnfolder]: 1112/2475 cut-off events. [2021-06-13 08:18:13,168 INFO L130 PetriNetUnfolder]: For 16578/16578 co-relation queries the response was YES. [2021-06-13 08:18:13,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15065 conditions, 2475 events. 1112/2475 cut-off events. For 16578/16578 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19056 event pairs, 191 based on Foata normal form. 1/2474 useless extension candidates. Maximal degree in co-relation 14242. Up to 1302 conditions per place. [2021-06-13 08:18:13,228 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 192 selfloop transitions, 90 changer transitions 0/292 dead transitions. [2021-06-13 08:18:13,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 292 transitions, 4791 flow [2021-06-13 08:18:13,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-06-13 08:18:13,230 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:18:13,230 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-06-13 08:18:13,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-06-13 08:18:13,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:13,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-06-13 08:18:13,232 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) [2021-06-13 08:18:13,233 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) [2021-06-13 08:18:13,233 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) [2021-06-13 08:18:13,234 INFO L185 Difference]: Start difference. First operand has 148 places, 249 transitions, 3859 flow. Second operand 9 states and 297 transitions. [2021-06-13 08:18:13,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 292 transitions, 4791 flow [2021-06-13 08:18:13,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 292 transitions, 4715 flow, removed 38 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:13,382 INFO L241 Difference]: Finished difference. Result has 162 places, 267 transitions, 4418 flow [2021-06-13 08:18:13,382 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3783, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4418, PETRI_PLACES=162, PETRI_TRANSITIONS=267} [2021-06-13 08:18:13,383 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 123 predicate places. [2021-06-13 08:18:13,383 INFO L482 AbstractCegarLoop]: Abstraction has has 162 places, 267 transitions, 4418 flow [2021-06-13 08:18:13,383 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) [2021-06-13 08:18:13,383 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:13,383 INFO L255 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] [2021-06-13 08:18:13,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-13 08:18:13,383 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:13,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:13,384 INFO L82 PathProgramCache]: Analyzing trace with hash -726576400, now seen corresponding path program 13 times [2021-06-13 08:18:13,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:13,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128976807] [2021-06-13 08:18:13,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:13,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:13,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:13,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:13,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:13,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:13,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:13,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:13,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:13,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:13,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:13,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:13,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:13,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:13,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:13,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:13,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:13,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:13,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:13,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:13,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128976807] [2021-06-13 08:18:13,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128976807] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:13,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:13,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:13,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473587813] [2021-06-13 08:18:13,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:13,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:13,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:13,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:13,472 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:13,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 267 transitions, 4418 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) [2021-06-13 08:18:13,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:13,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:13,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:14,009 INFO L129 PetriNetUnfolder]: 1157/2578 cut-off events. [2021-06-13 08:18:14,010 INFO L130 PetriNetUnfolder]: For 21305/21305 co-relation queries the response was YES. [2021-06-13 08:18:14,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16732 conditions, 2578 events. 1157/2578 cut-off events. For 21305/21305 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 20083 event pairs, 217 based on Foata normal form. 1/2579 useless extension candidates. Maximal degree in co-relation 15703. Up to 1288 conditions per place. [2021-06-13 08:18:14,037 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 232 selfloop transitions, 75 changer transitions 4/321 dead transitions. [2021-06-13 08:18:14,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 321 transitions, 5564 flow [2021-06-13 08:18:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:14,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-06-13 08:18:14,038 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-06-13 08:18:14,038 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-06-13 08:18:14,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-06-13 08:18:14,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:14,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-06-13 08:18:14,039 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) [2021-06-13 08:18:14,040 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) [2021-06-13 08:18:14,040 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) [2021-06-13 08:18:14,040 INFO L185 Difference]: Start difference. First operand has 162 places, 267 transitions, 4418 flow. Second operand 8 states and 269 transitions. [2021-06-13 08:18:14,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 321 transitions, 5564 flow [2021-06-13 08:18:14,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 321 transitions, 5408 flow, removed 56 selfloop flow, removed 2 redundant places. [2021-06-13 08:18:14,207 INFO L241 Difference]: Finished difference. Result has 173 places, 291 transitions, 4960 flow [2021-06-13 08:18:14,208 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4283, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4960, PETRI_PLACES=173, PETRI_TRANSITIONS=291} [2021-06-13 08:18:14,208 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 134 predicate places. [2021-06-13 08:18:14,209 INFO L482 AbstractCegarLoop]: Abstraction has has 173 places, 291 transitions, 4960 flow [2021-06-13 08:18:14,209 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) [2021-06-13 08:18:14,209 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:14,209 INFO L255 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] [2021-06-13 08:18:14,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-13 08:18:14,209 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:14,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:14,209 INFO L82 PathProgramCache]: Analyzing trace with hash -607797696, now seen corresponding path program 14 times [2021-06-13 08:18:14,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:14,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207765282] [2021-06-13 08:18:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:14,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:14,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:14,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:14,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:14,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:14,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:14,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:14,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:14,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:14,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:14,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:14,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:14,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:14,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:14,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:14,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:14,305 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:14,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:14,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:14,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:14,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207765282] [2021-06-13 08:18:14,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207765282] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:14,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:14,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:14,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566465259] [2021-06-13 08:18:14,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:14,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:14,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:14,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:14,312 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:14,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 291 transitions, 4960 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) [2021-06-13 08:18:14,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:14,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:14,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:14,867 INFO L129 PetriNetUnfolder]: 1163/2622 cut-off events. [2021-06-13 08:18:14,867 INFO L130 PetriNetUnfolder]: For 24693/24693 co-relation queries the response was YES. [2021-06-13 08:18:14,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17663 conditions, 2622 events. 1163/2622 cut-off events. For 24693/24693 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 20633 event pairs, 250 based on Foata normal form. 1/2621 useless extension candidates. Maximal degree in co-relation 16625. Up to 1025 conditions per place. [2021-06-13 08:18:14,978 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 184 selfloop transitions, 127 changer transitions 9/330 dead transitions. [2021-06-13 08:18:14,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 330 transitions, 5909 flow [2021-06-13 08:18:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:18:14,980 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:18:14,980 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:18:14,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:18:14,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:14,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:18:14,986 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) [2021-06-13 08:18:14,988 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) [2021-06-13 08:18:14,988 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) [2021-06-13 08:18:14,989 INFO L185 Difference]: Start difference. First operand has 173 places, 291 transitions, 4960 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:18:14,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 330 transitions, 5909 flow [2021-06-13 08:18:15,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 330 transitions, 5865 flow, removed 22 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:15,134 INFO L241 Difference]: Finished difference. Result has 187 places, 293 transitions, 5417 flow [2021-06-13 08:18:15,134 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4916, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5417, PETRI_PLACES=187, PETRI_TRANSITIONS=293} [2021-06-13 08:18:15,134 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2021-06-13 08:18:15,134 INFO L482 AbstractCegarLoop]: Abstraction has has 187 places, 293 transitions, 5417 flow [2021-06-13 08:18:15,134 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) [2021-06-13 08:18:15,135 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:15,135 INFO L255 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] [2021-06-13 08:18:15,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-13 08:18:15,135 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:15,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2134154614, now seen corresponding path program 15 times [2021-06-13 08:18:15,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:15,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800374129] [2021-06-13 08:18:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:15,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:15,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:15,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:15,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:15,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:15,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:15,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:15,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:15,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:15,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:15,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:15,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:15,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:15,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:15,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:15,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:15,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:15,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:15,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:15,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800374129] [2021-06-13 08:18:15,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800374129] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:15,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:15,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:15,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924127450] [2021-06-13 08:18:15,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:15,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:15,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:15,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:15,222 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:15,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 293 transitions, 5417 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) [2021-06-13 08:18:15,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:15,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:15,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:15,856 INFO L129 PetriNetUnfolder]: 1182/2696 cut-off events. [2021-06-13 08:18:15,856 INFO L130 PetriNetUnfolder]: For 31423/31423 co-relation queries the response was YES. [2021-06-13 08:18:15,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19436 conditions, 2696 events. 1182/2696 cut-off events. For 31423/31423 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 21550 event pairs, 205 based on Foata normal form. 1/2695 useless extension candidates. Maximal degree in co-relation 18366. Up to 1432 conditions per place. [2021-06-13 08:18:15,892 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 250 selfloop transitions, 75 changer transitions 8/343 dead transitions. [2021-06-13 08:18:15,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 343 transitions, 6549 flow [2021-06-13 08:18:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:18:15,895 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:18:15,895 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:18:15,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:18:15,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:15,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:18:15,899 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) [2021-06-13 08:18:15,900 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) [2021-06-13 08:18:15,900 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) [2021-06-13 08:18:15,900 INFO L185 Difference]: Start difference. First operand has 187 places, 293 transitions, 5417 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:18:15,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 343 transitions, 6549 flow [2021-06-13 08:18:16,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 343 transitions, 6396 flow, removed 25 selfloop flow, removed 4 redundant places. [2021-06-13 08:18:16,085 INFO L241 Difference]: Finished difference. Result has 198 places, 309 transitions, 5795 flow [2021-06-13 08:18:16,086 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5795, PETRI_PLACES=198, PETRI_TRANSITIONS=309} [2021-06-13 08:18:16,086 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 159 predicate places. [2021-06-13 08:18:16,086 INFO L482 AbstractCegarLoop]: Abstraction has has 198 places, 309 transitions, 5795 flow [2021-06-13 08:18:16,086 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) [2021-06-13 08:18:16,086 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:16,086 INFO L255 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] [2021-06-13 08:18:16,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-13 08:18:16,087 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:16,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:16,087 INFO L82 PathProgramCache]: Analyzing trace with hash 29107404, now seen corresponding path program 16 times [2021-06-13 08:18:16,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:16,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35166672] [2021-06-13 08:18:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:16,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:16,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:16,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:16,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:16,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:16,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:16,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:16,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:16,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:16,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:16,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:16,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35166672] [2021-06-13 08:18:16,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35166672] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:16,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:16,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:16,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623920704] [2021-06-13 08:18:16,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:16,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:16,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:16,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:16,164 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:16,164 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 309 transitions, 5795 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) [2021-06-13 08:18:16,164 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:16,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:16,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:16,732 INFO L129 PetriNetUnfolder]: 1178/2694 cut-off events. [2021-06-13 08:18:16,732 INFO L130 PetriNetUnfolder]: For 35665/35665 co-relation queries the response was YES. [2021-06-13 08:18:16,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20101 conditions, 2694 events. 1178/2694 cut-off events. For 35665/35665 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 21660 event pairs, 224 based on Foata normal form. 1/2695 useless extension candidates. Maximal degree in co-relation 19042. Up to 1277 conditions per place. [2021-06-13 08:18:16,760 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 223 selfloop transitions, 112 changer transitions 4/349 dead transitions. [2021-06-13 08:18:16,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 349 transitions, 6835 flow [2021-06-13 08:18:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-06-13 08:18:16,761 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-06-13 08:18:16,761 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-06-13 08:18:16,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-06-13 08:18:16,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:16,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-06-13 08:18:16,762 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) [2021-06-13 08:18:16,763 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) [2021-06-13 08:18:16,763 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) [2021-06-13 08:18:16,763 INFO L185 Difference]: Start difference. First operand has 198 places, 309 transitions, 5795 flow. Second operand 9 states and 299 transitions. [2021-06-13 08:18:16,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 349 transitions, 6835 flow [2021-06-13 08:18:16,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 349 transitions, 6601 flow, removed 57 selfloop flow, removed 8 redundant places. [2021-06-13 08:18:16,952 INFO L241 Difference]: Finished difference. Result has 204 places, 318 transitions, 6155 flow [2021-06-13 08:18:16,952 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5567, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6155, PETRI_PLACES=204, PETRI_TRANSITIONS=318} [2021-06-13 08:18:16,952 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 165 predicate places. [2021-06-13 08:18:16,952 INFO L482 AbstractCegarLoop]: Abstraction has has 204 places, 318 transitions, 6155 flow [2021-06-13 08:18:16,953 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) [2021-06-13 08:18:16,953 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:16,953 INFO L255 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] [2021-06-13 08:18:16,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-13 08:18:16,953 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:16,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:16,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1532878540, now seen corresponding path program 17 times [2021-06-13 08:18:16,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:16,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995971480] [2021-06-13 08:18:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:16,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:16,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:16,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:16,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:16,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:16,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:16,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:17,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:17,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:17,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:17,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:17,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:17,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995971480] [2021-06-13 08:18:17,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995971480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:17,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:17,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:17,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595495626] [2021-06-13 08:18:17,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:17,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:17,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:17,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:17,021 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:17,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 318 transitions, 6155 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) [2021-06-13 08:18:17,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:17,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:17,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:17,514 INFO L129 PetriNetUnfolder]: 1202/2787 cut-off events. [2021-06-13 08:18:17,515 INFO L130 PetriNetUnfolder]: For 39635/39635 co-relation queries the response was YES. [2021-06-13 08:18:17,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20899 conditions, 2787 events. 1202/2787 cut-off events. For 39635/39635 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 22810 event pairs, 228 based on Foata normal form. 1/2787 useless extension candidates. Maximal degree in co-relation 19726. Up to 1335 conditions per place. [2021-06-13 08:18:17,613 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 288 selfloop transitions, 60 changer transitions 3/361 dead transitions. [2021-06-13 08:18:17,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 361 transitions, 7132 flow [2021-06-13 08:18:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2021-06-13 08:18:17,614 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-06-13 08:18:17,614 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 270 transitions. [2021-06-13 08:18:17,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 270 transitions. [2021-06-13 08:18:17,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:17,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 270 transitions. [2021-06-13 08:18:17,615 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) [2021-06-13 08:18:17,615 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) [2021-06-13 08:18:17,616 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) [2021-06-13 08:18:17,616 INFO L185 Difference]: Start difference. First operand has 204 places, 318 transitions, 6155 flow. Second operand 8 states and 270 transitions. [2021-06-13 08:18:17,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 361 transitions, 7132 flow [2021-06-13 08:18:17,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 361 transitions, 7002 flow, removed 29 selfloop flow, removed 4 redundant places. [2021-06-13 08:18:17,800 INFO L241 Difference]: Finished difference. Result has 210 places, 331 transitions, 6314 flow [2021-06-13 08:18:17,800 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6029, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6314, PETRI_PLACES=210, PETRI_TRANSITIONS=331} [2021-06-13 08:18:17,800 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 171 predicate places. [2021-06-13 08:18:17,801 INFO L482 AbstractCegarLoop]: Abstraction has has 210 places, 331 transitions, 6314 flow [2021-06-13 08:18:17,801 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) [2021-06-13 08:18:17,801 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:17,801 INFO L255 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] [2021-06-13 08:18:17,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-13 08:18:17,801 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:17,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:17,801 INFO L82 PathProgramCache]: Analyzing trace with hash 525523056, now seen corresponding path program 18 times [2021-06-13 08:18:17,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:17,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061900204] [2021-06-13 08:18:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:17,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:17,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:17,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:17,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:17,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:17,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:17,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:17,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:17,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:17,861 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:17,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:17,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:17,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061900204] [2021-06-13 08:18:17,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061900204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:17,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:17,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:17,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961097423] [2021-06-13 08:18:17,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:17,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:17,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:17,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:17,865 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:17,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 331 transitions, 6314 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) [2021-06-13 08:18:17,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:17,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:17,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:18,353 INFO L129 PetriNetUnfolder]: 1262/2977 cut-off events. [2021-06-13 08:18:18,354 INFO L130 PetriNetUnfolder]: For 41276/41276 co-relation queries the response was YES. [2021-06-13 08:18:18,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22186 conditions, 2977 events. 1262/2977 cut-off events. For 41276/41276 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 25019 event pairs, 207 based on Foata normal form. 1/2976 useless extension candidates. Maximal degree in co-relation 21014. Up to 1666 conditions per place. [2021-06-13 08:18:18,391 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 322 selfloop transitions, 52 changer transitions 0/384 dead transitions. [2021-06-13 08:18:18,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 384 transitions, 7490 flow [2021-06-13 08:18:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:18,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-06-13 08:18:18,392 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-06-13 08:18:18,392 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-06-13 08:18:18,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-06-13 08:18:18,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:18,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-06-13 08:18:18,393 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) [2021-06-13 08:18:18,393 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) [2021-06-13 08:18:18,394 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) [2021-06-13 08:18:18,394 INFO L185 Difference]: Start difference. First operand has 210 places, 331 transitions, 6314 flow. Second operand 8 states and 268 transitions. [2021-06-13 08:18:18,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 384 transitions, 7490 flow [2021-06-13 08:18:18,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 384 transitions, 7404 flow, removed 43 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:18,726 INFO L241 Difference]: Finished difference. Result has 222 places, 359 transitions, 6801 flow [2021-06-13 08:18:18,727 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6268, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6801, PETRI_PLACES=222, PETRI_TRANSITIONS=359} [2021-06-13 08:18:18,727 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 183 predicate places. [2021-06-13 08:18:18,727 INFO L482 AbstractCegarLoop]: Abstraction has has 222 places, 359 transitions, 6801 flow [2021-06-13 08:18:18,727 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) [2021-06-13 08:18:18,727 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:18,727 INFO L255 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] [2021-06-13 08:18:18,727 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-13 08:18:18,727 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:18,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:18,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1533836312, now seen corresponding path program 19 times [2021-06-13 08:18:18,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:18,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18930610] [2021-06-13 08:18:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:18,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:18,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:18,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:18,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:18,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:18,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:18,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:18,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:18,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:18,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:18,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:18,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:18,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:18,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:18,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:18,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:18,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:18,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:18,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:18,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18930610] [2021-06-13 08:18:18,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18930610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:18,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:18,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:18,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982935293] [2021-06-13 08:18:18,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:18,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:18,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:18,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:18,979 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:18,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 359 transitions, 6801 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) [2021-06-13 08:18:18,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:18,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:18,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:19,667 INFO L129 PetriNetUnfolder]: 1285/3044 cut-off events. [2021-06-13 08:18:19,667 INFO L130 PetriNetUnfolder]: For 47856/47856 co-relation queries the response was YES. [2021-06-13 08:18:19,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23190 conditions, 3044 events. 1285/3044 cut-off events. For 47856/47856 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 25771 event pairs, 199 based on Foata normal form. 1/3043 useless extension candidates. Maximal degree in co-relation 22012. Up to 1710 conditions per place. [2021-06-13 08:18:19,705 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 329 selfloop transitions, 62 changer transitions 0/401 dead transitions. [2021-06-13 08:18:19,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 401 transitions, 7990 flow [2021-06-13 08:18:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:19,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:19,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:18:19,708 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:18:19,708 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:18:19,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:18:19,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:19,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:18:19,709 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) [2021-06-13 08:18:19,710 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) [2021-06-13 08:18:19,710 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) [2021-06-13 08:18:19,710 INFO L185 Difference]: Start difference. First operand has 222 places, 359 transitions, 6801 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:18:19,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 401 transitions, 7990 flow [2021-06-13 08:18:19,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 401 transitions, 7878 flow, removed 56 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:19,986 INFO L241 Difference]: Finished difference. Result has 232 places, 375 transitions, 7200 flow [2021-06-13 08:18:19,986 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6689, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7200, PETRI_PLACES=232, PETRI_TRANSITIONS=375} [2021-06-13 08:18:19,986 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 193 predicate places. [2021-06-13 08:18:19,987 INFO L482 AbstractCegarLoop]: Abstraction has has 232 places, 375 transitions, 7200 flow [2021-06-13 08:18:19,987 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) [2021-06-13 08:18:19,987 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:19,987 INFO L255 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] [2021-06-13 08:18:19,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-13 08:18:19,987 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:19,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:19,988 INFO L82 PathProgramCache]: Analyzing trace with hash 43488716, now seen corresponding path program 20 times [2021-06-13 08:18:19,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:19,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346782237] [2021-06-13 08:18:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:19,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:19,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:20,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:20,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:20,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:20,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:20,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:20,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:20,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:20,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:20,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:20,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:20,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:20,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:20,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:20,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:20,064 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:20,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:20,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:20,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346782237] [2021-06-13 08:18:20,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346782237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:20,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:20,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:20,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325873457] [2021-06-13 08:18:20,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:20,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:20,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:20,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:20,069 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:20,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 375 transitions, 7200 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) [2021-06-13 08:18:20,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:20,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:20,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:20,719 INFO L129 PetriNetUnfolder]: 1323/3149 cut-off events. [2021-06-13 08:18:20,719 INFO L130 PetriNetUnfolder]: For 53037/53037 co-relation queries the response was YES. [2021-06-13 08:18:20,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24385 conditions, 3149 events. 1323/3149 cut-off events. For 53037/53037 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 26892 event pairs, 205 based on Foata normal form. 1/3147 useless extension candidates. Maximal degree in co-relation 23204. Up to 1720 conditions per place. [2021-06-13 08:18:20,759 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 339 selfloop transitions, 72 changer transitions 7/428 dead transitions. [2021-06-13 08:18:20,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 428 transitions, 8704 flow [2021-06-13 08:18:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:18:20,762 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:18:20,762 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:18:20,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:18:20,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:20,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:18:20,763 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) [2021-06-13 08:18:20,763 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) [2021-06-13 08:18:20,763 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) [2021-06-13 08:18:20,763 INFO L185 Difference]: Start difference. First operand has 232 places, 375 transitions, 7200 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:18:20,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 428 transitions, 8704 flow [2021-06-13 08:18:21,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 428 transitions, 8382 flow, removed 161 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:21,060 INFO L241 Difference]: Finished difference. Result has 245 places, 395 transitions, 7566 flow [2021-06-13 08:18:21,061 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7006, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7566, PETRI_PLACES=245, PETRI_TRANSITIONS=395} [2021-06-13 08:18:21,061 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 206 predicate places. [2021-06-13 08:18:21,061 INFO L482 AbstractCegarLoop]: Abstraction has has 245 places, 395 transitions, 7566 flow [2021-06-13 08:18:21,061 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) [2021-06-13 08:18:21,061 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:21,061 INFO L255 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] [2021-06-13 08:18:21,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-13 08:18:21,061 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:21,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1721852958, now seen corresponding path program 21 times [2021-06-13 08:18:21,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:21,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949142139] [2021-06-13 08:18:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:21,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:21,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:21,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:21,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:21,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:21,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:21,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:21,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:21,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:21,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:21,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:21,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:21,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:21,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:21,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:21,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:21,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:21,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:21,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:21,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949142139] [2021-06-13 08:18:21,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949142139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:21,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:21,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:21,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246774852] [2021-06-13 08:18:21,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:21,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:21,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:21,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:21,149 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:21,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 395 transitions, 7566 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) [2021-06-13 08:18:21,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:21,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:21,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:21,884 INFO L129 PetriNetUnfolder]: 1328/3143 cut-off events. [2021-06-13 08:18:21,884 INFO L130 PetriNetUnfolder]: For 58531/58531 co-relation queries the response was YES. [2021-06-13 08:18:21,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25123 conditions, 3143 events. 1328/3143 cut-off events. For 58531/58531 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 26817 event pairs, 265 based on Foata normal form. 1/3142 useless extension candidates. Maximal degree in co-relation 24099. Up to 1320 conditions per place. [2021-06-13 08:18:21,917 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 311 selfloop transitions, 112 changer transitions 5/438 dead transitions. [2021-06-13 08:18:21,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 438 transitions, 8843 flow [2021-06-13 08:18:21,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-06-13 08:18:21,918 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-06-13 08:18:21,918 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-06-13 08:18:21,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-06-13 08:18:21,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:21,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-06-13 08:18:21,919 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) [2021-06-13 08:18:21,920 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) [2021-06-13 08:18:21,920 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) [2021-06-13 08:18:21,920 INFO L185 Difference]: Start difference. First operand has 245 places, 395 transitions, 7566 flow. Second operand 9 states and 301 transitions. [2021-06-13 08:18:21,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 438 transitions, 8843 flow [2021-06-13 08:18:22,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 438 transitions, 8652 flow, removed 89 selfloop flow, removed 1 redundant places. [2021-06-13 08:18:22,198 INFO L241 Difference]: Finished difference. Result has 258 places, 404 transitions, 7957 flow [2021-06-13 08:18:22,198 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7377, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7957, PETRI_PLACES=258, PETRI_TRANSITIONS=404} [2021-06-13 08:18:22,198 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 219 predicate places. [2021-06-13 08:18:22,198 INFO L482 AbstractCegarLoop]: Abstraction has has 258 places, 404 transitions, 7957 flow [2021-06-13 08:18:22,198 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) [2021-06-13 08:18:22,198 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:22,199 INFO L255 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] [2021-06-13 08:18:22,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-13 08:18:22,199 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:22,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:22,199 INFO L82 PathProgramCache]: Analyzing trace with hash -2073602226, now seen corresponding path program 22 times [2021-06-13 08:18:22,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:22,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702826399] [2021-06-13 08:18:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:22,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:22,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:22,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:22,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:22,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:22,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:22,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:22,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:22,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:22,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:22,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:22,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:22,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:22,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:22,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:22,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:22,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:22,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:22,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:22,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:22,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702826399] [2021-06-13 08:18:22,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702826399] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:22,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:22,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:22,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085473066] [2021-06-13 08:18:22,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:22,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:22,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:22,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:22,268 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:22,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 404 transitions, 7957 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) [2021-06-13 08:18:22,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:22,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:22,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:22,879 INFO L129 PetriNetUnfolder]: 1342/3208 cut-off events. [2021-06-13 08:18:22,879 INFO L130 PetriNetUnfolder]: For 65407/65407 co-relation queries the response was YES. [2021-06-13 08:18:22,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26653 conditions, 3208 events. 1342/3208 cut-off events. For 65407/65407 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 27714 event pairs, 224 based on Foata normal form. 1/3207 useless extension candidates. Maximal degree in co-relation 25780. Up to 1637 conditions per place. [2021-06-13 08:18:22,927 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 356 selfloop transitions, 90 changer transitions 13/469 dead transitions. [2021-06-13 08:18:22,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 469 transitions, 9755 flow [2021-06-13 08:18:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:22,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-06-13 08:18:22,928 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-06-13 08:18:22,928 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-06-13 08:18:22,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-06-13 08:18:22,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:22,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-06-13 08:18:22,929 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) [2021-06-13 08:18:22,929 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) [2021-06-13 08:18:22,930 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) [2021-06-13 08:18:22,930 INFO L185 Difference]: Start difference. First operand has 258 places, 404 transitions, 7957 flow. Second operand 9 states and 299 transitions. [2021-06-13 08:18:22,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 469 transitions, 9755 flow [2021-06-13 08:18:23,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 469 transitions, 9515 flow, removed 70 selfloop flow, removed 3 redundant places. [2021-06-13 08:18:23,255 INFO L241 Difference]: Finished difference. Result has 269 places, 429 transitions, 8560 flow [2021-06-13 08:18:23,255 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7771, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8560, PETRI_PLACES=269, PETRI_TRANSITIONS=429} [2021-06-13 08:18:23,256 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 230 predicate places. [2021-06-13 08:18:23,256 INFO L482 AbstractCegarLoop]: Abstraction has has 269 places, 429 transitions, 8560 flow [2021-06-13 08:18:23,256 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) [2021-06-13 08:18:23,256 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:23,256 INFO L255 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] [2021-06-13 08:18:23,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-13 08:18:23,256 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:23,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1189148778, now seen corresponding path program 23 times [2021-06-13 08:18:23,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:23,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361167813] [2021-06-13 08:18:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:23,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:23,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:23,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:23,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:23,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:23,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:23,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:23,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:23,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:23,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:23,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:23,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:23,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:23,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:23,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:23,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:23,319 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:23,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:23,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:23,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361167813] [2021-06-13 08:18:23,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361167813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:23,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:23,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:23,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465561121] [2021-06-13 08:18:23,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:23,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:23,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:23,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:23,322 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:23,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 429 transitions, 8560 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) [2021-06-13 08:18:23,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:23,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:23,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:23,925 INFO L129 PetriNetUnfolder]: 1337/3210 cut-off events. [2021-06-13 08:18:23,925 INFO L130 PetriNetUnfolder]: For 68631/68631 co-relation queries the response was YES. [2021-06-13 08:18:24,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27257 conditions, 3210 events. 1337/3210 cut-off events. For 68631/68631 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 27859 event pairs, 235 based on Foata normal form. 1/3209 useless extension candidates. Maximal degree in co-relation 26521. Up to 1661 conditions per place. [2021-06-13 08:18:24,029 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 390 selfloop transitions, 71 changer transitions 4/475 dead transitions. [2021-06-13 08:18:24,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 475 transitions, 10016 flow [2021-06-13 08:18:24,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:24,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-06-13 08:18:24,030 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-06-13 08:18:24,030 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-06-13 08:18:24,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-06-13 08:18:24,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:24,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-06-13 08:18:24,031 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) [2021-06-13 08:18:24,032 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) [2021-06-13 08:18:24,032 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) [2021-06-13 08:18:24,032 INFO L185 Difference]: Start difference. First operand has 269 places, 429 transitions, 8560 flow. Second operand 8 states and 269 transitions. [2021-06-13 08:18:24,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 475 transitions, 10016 flow [2021-06-13 08:18:24,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 475 transitions, 9695 flow, removed 116 selfloop flow, removed 5 redundant places. [2021-06-13 08:18:24,383 INFO L241 Difference]: Finished difference. Result has 277 places, 445 transitions, 8877 flow [2021-06-13 08:18:24,383 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8247, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8877, PETRI_PLACES=277, PETRI_TRANSITIONS=445} [2021-06-13 08:18:24,383 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 238 predicate places. [2021-06-13 08:18:24,383 INFO L482 AbstractCegarLoop]: Abstraction has has 277 places, 445 transitions, 8877 flow [2021-06-13 08:18:24,383 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) [2021-06-13 08:18:24,383 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:24,384 INFO L255 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] [2021-06-13 08:18:24,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-13 08:18:24,384 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:24,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1975207076, now seen corresponding path program 24 times [2021-06-13 08:18:24,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:24,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014083317] [2021-06-13 08:18:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:24,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:24,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:24,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:24,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:24,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:24,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:24,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:24,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:24,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:24,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:24,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:24,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:24,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:24,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:24,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:24,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:24,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:24,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:24,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:24,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014083317] [2021-06-13 08:18:24,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014083317] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:24,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:24,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:24,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333992258] [2021-06-13 08:18:24,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:24,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:24,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:24,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:24,452 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:24,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 445 transitions, 8877 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) [2021-06-13 08:18:24,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:24,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:24,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:25,083 INFO L129 PetriNetUnfolder]: 1349/3271 cut-off events. [2021-06-13 08:18:25,083 INFO L130 PetriNetUnfolder]: For 70762/70762 co-relation queries the response was YES. [2021-06-13 08:18:25,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27844 conditions, 3271 events. 1349/3271 cut-off events. For 70762/70762 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 28740 event pairs, 196 based on Foata normal form. 1/3269 useless extension candidates. Maximal degree in co-relation 26864. Up to 1864 conditions per place. [2021-06-13 08:18:25,123 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 404 selfloop transitions, 60 changer transitions 7/481 dead transitions. [2021-06-13 08:18:25,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 481 transitions, 10260 flow [2021-06-13 08:18:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:25,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-06-13 08:18:25,125 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-06-13 08:18:25,125 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-06-13 08:18:25,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-06-13 08:18:25,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:25,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-06-13 08:18:25,126 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) [2021-06-13 08:18:25,127 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) [2021-06-13 08:18:25,127 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) [2021-06-13 08:18:25,127 INFO L185 Difference]: Start difference. First operand has 277 places, 445 transitions, 8877 flow. Second operand 8 states and 267 transitions. [2021-06-13 08:18:25,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 481 transitions, 10260 flow [2021-06-13 08:18:25,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 481 transitions, 10138 flow, removed 61 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:25,551 INFO L241 Difference]: Finished difference. Result has 287 places, 450 transitions, 9082 flow [2021-06-13 08:18:25,552 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8755, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9082, PETRI_PLACES=287, PETRI_TRANSITIONS=450} [2021-06-13 08:18:25,552 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 248 predicate places. [2021-06-13 08:18:25,552 INFO L482 AbstractCegarLoop]: Abstraction has has 287 places, 450 transitions, 9082 flow [2021-06-13 08:18:25,552 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) [2021-06-13 08:18:25,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:25,552 INFO L255 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] [2021-06-13 08:18:25,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-13 08:18:25,552 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:25,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:25,552 INFO L82 PathProgramCache]: Analyzing trace with hash 857183470, now seen corresponding path program 25 times [2021-06-13 08:18:25,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:25,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371473154] [2021-06-13 08:18:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:25,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:25,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:25,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:25,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:25,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:25,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:25,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:25,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:25,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:25,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:25,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:25,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:25,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:25,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:25,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:25,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:25,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:25,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:25,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:25,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371473154] [2021-06-13 08:18:25,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371473154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:25,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:25,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:25,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749212768] [2021-06-13 08:18:25,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:25,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:25,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:25,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:25,608 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:25,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 450 transitions, 9082 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) [2021-06-13 08:18:25,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:25,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:25,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:26,271 INFO L129 PetriNetUnfolder]: 1375/3345 cut-off events. [2021-06-13 08:18:26,272 INFO L130 PetriNetUnfolder]: For 78590/78590 co-relation queries the response was YES. [2021-06-13 08:18:26,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28787 conditions, 3345 events. 1375/3345 cut-off events. For 78590/78590 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 29714 event pairs, 223 based on Foata normal form. 1/3345 useless extension candidates. Maximal degree in co-relation 27768. Up to 1776 conditions per place. [2021-06-13 08:18:26,375 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 416 selfloop transitions, 74 changer transitions 4/504 dead transitions. [2021-06-13 08:18:26,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 504 transitions, 10705 flow [2021-06-13 08:18:26,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-06-13 08:18:26,376 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-06-13 08:18:26,376 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-06-13 08:18:26,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-06-13 08:18:26,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:26,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-06-13 08:18:26,377 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) [2021-06-13 08:18:26,377 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) [2021-06-13 08:18:26,377 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) [2021-06-13 08:18:26,377 INFO L185 Difference]: Start difference. First operand has 287 places, 450 transitions, 9082 flow. Second operand 8 states and 269 transitions. [2021-06-13 08:18:26,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 504 transitions, 10705 flow [2021-06-13 08:18:26,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 504 transitions, 10508 flow, removed 90 selfloop flow, removed 1 redundant places. [2021-06-13 08:18:26,757 INFO L241 Difference]: Finished difference. Result has 299 places, 474 transitions, 9622 flow [2021-06-13 08:18:26,757 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8887, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9622, PETRI_PLACES=299, PETRI_TRANSITIONS=474} [2021-06-13 08:18:26,757 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 260 predicate places. [2021-06-13 08:18:26,758 INFO L482 AbstractCegarLoop]: Abstraction has has 299 places, 474 transitions, 9622 flow [2021-06-13 08:18:26,758 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) [2021-06-13 08:18:26,758 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:26,758 INFO L255 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] [2021-06-13 08:18:26,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-13 08:18:26,758 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:26,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1137105298, now seen corresponding path program 26 times [2021-06-13 08:18:26,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:26,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641884873] [2021-06-13 08:18:26,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:26,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:26,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:26,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:26,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:26,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:26,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:26,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:26,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:26,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:26,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:26,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:26,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:26,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:26,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:26,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:26,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:26,833 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:26,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:26,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:26,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641884873] [2021-06-13 08:18:26,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641884873] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:26,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:26,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:26,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525968530] [2021-06-13 08:18:26,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:26,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:26,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:26,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:26,836 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:26,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 474 transitions, 9622 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) [2021-06-13 08:18:26,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:26,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:26,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:27,594 INFO L129 PetriNetUnfolder]: 1381/3388 cut-off events. [2021-06-13 08:18:27,595 INFO L130 PetriNetUnfolder]: For 85197/85197 co-relation queries the response was YES. [2021-06-13 08:18:27,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29904 conditions, 3388 events. 1381/3388 cut-off events. For 85197/85197 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 30364 event pairs, 259 based on Foata normal form. 1/3387 useless extension candidates. Maximal degree in co-relation 28739. Up to 1519 conditions per place. [2021-06-13 08:18:27,642 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 369 selfloop transitions, 125 changer transitions 9/513 dead transitions. [2021-06-13 08:18:27,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 513 transitions, 11077 flow [2021-06-13 08:18:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:18:27,643 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:18:27,644 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:18:27,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:18:27,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:27,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:18:27,644 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) [2021-06-13 08:18:27,645 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) [2021-06-13 08:18:27,645 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) [2021-06-13 08:18:27,645 INFO L185 Difference]: Start difference. First operand has 299 places, 474 transitions, 9622 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:18:27,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 513 transitions, 11077 flow [2021-06-13 08:18:28,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 513 transitions, 10997 flow, removed 40 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:28,121 INFO L241 Difference]: Finished difference. Result has 313 places, 476 transitions, 10041 flow [2021-06-13 08:18:28,121 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9542, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10041, PETRI_PLACES=313, PETRI_TRANSITIONS=476} [2021-06-13 08:18:28,121 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 274 predicate places. [2021-06-13 08:18:28,121 INFO L482 AbstractCegarLoop]: Abstraction has has 313 places, 476 transitions, 10041 flow [2021-06-13 08:18:28,122 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) [2021-06-13 08:18:28,122 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:28,122 INFO L255 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] [2021-06-13 08:18:28,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-13 08:18:28,122 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:28,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:28,122 INFO L82 PathProgramCache]: Analyzing trace with hash 832761142, now seen corresponding path program 27 times [2021-06-13 08:18:28,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:28,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339487289] [2021-06-13 08:18:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:28,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:28,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:28,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:28,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:28,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:28,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:28,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:28,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:28,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:28,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:28,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:28,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:28,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:28,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:28,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:28,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:28,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:28,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:28,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:28,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339487289] [2021-06-13 08:18:28,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339487289] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:28,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:28,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:28,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256542609] [2021-06-13 08:18:28,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:28,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:28,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:28,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:28,192 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:28,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 476 transitions, 10041 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) [2021-06-13 08:18:28,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:28,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:28,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:29,001 INFO L129 PetriNetUnfolder]: 1381/3444 cut-off events. [2021-06-13 08:18:29,001 INFO L130 PetriNetUnfolder]: For 93938/93938 co-relation queries the response was YES. [2021-06-13 08:18:29,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31401 conditions, 3444 events. 1381/3444 cut-off events. For 93938/93938 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 31332 event pairs, 204 based on Foata normal form. 1/3441 useless extension candidates. Maximal degree in co-relation 30168. Up to 1883 conditions per place. [2021-06-13 08:18:29,044 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 414 selfloop transitions, 95 changer transitions 0/519 dead transitions. [2021-06-13 08:18:29,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 519 transitions, 11646 flow [2021-06-13 08:18:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-06-13 08:18:29,045 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:18:29,045 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-06-13 08:18:29,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-06-13 08:18:29,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:29,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-06-13 08:18:29,046 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) [2021-06-13 08:18:29,046 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) [2021-06-13 08:18:29,047 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) [2021-06-13 08:18:29,047 INFO L185 Difference]: Start difference. First operand has 313 places, 476 transitions, 10041 flow. Second operand 9 states and 297 transitions. [2021-06-13 08:18:29,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 519 transitions, 11646 flow [2021-06-13 08:18:29,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 519 transitions, 11382 flow, removed 50 selfloop flow, removed 8 redundant places. [2021-06-13 08:18:29,550 INFO L241 Difference]: Finished difference. Result has 319 places, 494 transitions, 10645 flow [2021-06-13 08:18:29,551 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9783, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10645, PETRI_PLACES=319, PETRI_TRANSITIONS=494} [2021-06-13 08:18:29,551 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 280 predicate places. [2021-06-13 08:18:29,551 INFO L482 AbstractCegarLoop]: Abstraction has has 319 places, 494 transitions, 10645 flow [2021-06-13 08:18:29,551 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) [2021-06-13 08:18:29,551 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:29,552 INFO L255 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] [2021-06-13 08:18:29,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-13 08:18:29,552 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:29,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:29,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1709298046, now seen corresponding path program 28 times [2021-06-13 08:18:29,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:29,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979065516] [2021-06-13 08:18:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:29,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:29,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:29,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:29,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:29,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:29,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:29,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:29,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:29,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:29,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:29,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:29,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:29,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:29,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:29,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:29,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:29,624 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:29,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:29,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:29,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979065516] [2021-06-13 08:18:29,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979065516] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:29,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:29,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:29,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761384457] [2021-06-13 08:18:29,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:29,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:29,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:29,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:29,628 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:29,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 494 transitions, 10645 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) [2021-06-13 08:18:29,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:29,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:29,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:30,487 INFO L129 PetriNetUnfolder]: 1421/3549 cut-off events. [2021-06-13 08:18:30,487 INFO L130 PetriNetUnfolder]: For 99409/99409 co-relation queries the response was YES. [2021-06-13 08:18:30,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32361 conditions, 3549 events. 1421/3549 cut-off events. For 99409/99409 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 32571 event pairs, 214 based on Foata normal form. 1/3547 useless extension candidates. Maximal degree in co-relation 31126. Up to 1968 conditions per place. [2021-06-13 08:18:30,534 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 456 selfloop transitions, 74 changer transitions 8/548 dead transitions. [2021-06-13 08:18:30,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 548 transitions, 12438 flow [2021-06-13 08:18:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:18:30,536 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:18:30,536 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:18:30,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:18:30,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:30,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:18:30,536 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) [2021-06-13 08:18:30,537 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) [2021-06-13 08:18:30,537 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) [2021-06-13 08:18:30,537 INFO L185 Difference]: Start difference. First operand has 319 places, 494 transitions, 10645 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:18:30,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 548 transitions, 12438 flow [2021-06-13 08:18:31,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 548 transitions, 12125 flow, removed 146 selfloop flow, removed 1 redundant places. [2021-06-13 08:18:31,091 INFO L241 Difference]: Finished difference. Result has 333 places, 514 transitions, 10990 flow [2021-06-13 08:18:31,092 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=10420, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10990, PETRI_PLACES=333, PETRI_TRANSITIONS=514} [2021-06-13 08:18:31,092 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 294 predicate places. [2021-06-13 08:18:31,092 INFO L482 AbstractCegarLoop]: Abstraction has has 333 places, 514 transitions, 10990 flow [2021-06-13 08:18:31,092 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) [2021-06-13 08:18:31,092 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:31,092 INFO L255 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] [2021-06-13 08:18:31,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-13 08:18:31,093 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:31,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:31,093 INFO L82 PathProgramCache]: Analyzing trace with hash -410273708, now seen corresponding path program 29 times [2021-06-13 08:18:31,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:31,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868556344] [2021-06-13 08:18:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:31,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:31,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:31,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:31,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:31,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:31,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:31,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:31,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:31,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:31,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:31,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:31,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:31,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:31,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:31,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:31,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:31,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:31,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:31,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:31,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868556344] [2021-06-13 08:18:31,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868556344] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:31,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:31,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:31,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22492373] [2021-06-13 08:18:31,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:31,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:31,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:31,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:31,158 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:31,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 514 transitions, 10990 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) [2021-06-13 08:18:31,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:31,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:31,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:32,085 INFO L129 PetriNetUnfolder]: 1422/3577 cut-off events. [2021-06-13 08:18:32,085 INFO L130 PetriNetUnfolder]: For 104355/104355 co-relation queries the response was YES. [2021-06-13 08:18:32,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33014 conditions, 3577 events. 1422/3577 cut-off events. For 104355/104355 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 33105 event pairs, 226 based on Foata normal form. 1/3577 useless extension candidates. Maximal degree in co-relation 31769. Up to 1825 conditions per place. [2021-06-13 08:18:32,150 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 434 selfloop transitions, 111 changer transitions 4/559 dead transitions. [2021-06-13 08:18:32,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 559 transitions, 12649 flow [2021-06-13 08:18:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-06-13 08:18:32,151 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-06-13 08:18:32,151 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-06-13 08:18:32,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-06-13 08:18:32,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:32,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-06-13 08:18:32,152 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) [2021-06-13 08:18:32,153 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) [2021-06-13 08:18:32,153 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) [2021-06-13 08:18:32,153 INFO L185 Difference]: Start difference. First operand has 333 places, 514 transitions, 10990 flow. Second operand 9 states and 299 transitions. [2021-06-13 08:18:32,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 559 transitions, 12649 flow [2021-06-13 08:18:32,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 559 transitions, 12445 flow, removed 70 selfloop flow, removed 4 redundant places. [2021-06-13 08:18:32,793 INFO L241 Difference]: Finished difference. Result has 343 places, 528 transitions, 11515 flow [2021-06-13 08:18:32,793 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11515, PETRI_PLACES=343, PETRI_TRANSITIONS=528} [2021-06-13 08:18:32,793 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 304 predicate places. [2021-06-13 08:18:32,793 INFO L482 AbstractCegarLoop]: Abstraction has has 343 places, 528 transitions, 11515 flow [2021-06-13 08:18:32,794 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) [2021-06-13 08:18:32,794 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:32,794 INFO L255 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] [2021-06-13 08:18:32,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-13 08:18:32,794 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:32,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:32,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1472806184, now seen corresponding path program 30 times [2021-06-13 08:18:32,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:32,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099739038] [2021-06-13 08:18:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:32,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:32,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:32,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:32,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:32,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:32,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:32,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:32,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:32,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:32,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:32,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:32,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:32,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:32,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:32,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:32,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:32,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:32,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:32,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:32,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099739038] [2021-06-13 08:18:32,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099739038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:32,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:32,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:32,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851275134] [2021-06-13 08:18:32,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:32,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:32,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:32,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:32,867 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:32,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 528 transitions, 11515 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) [2021-06-13 08:18:32,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:32,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:32,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:33,811 INFO L129 PetriNetUnfolder]: 1421/3592 cut-off events. [2021-06-13 08:18:33,811 INFO L130 PetriNetUnfolder]: For 110032/110032 co-relation queries the response was YES. [2021-06-13 08:18:33,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33698 conditions, 3592 events. 1421/3592 cut-off events. For 110032/110032 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 33412 event pairs, 258 based on Foata normal form. 1/3592 useless extension candidates. Maximal degree in co-relation 32355. Up to 1608 conditions per place. [2021-06-13 08:18:33,863 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 417 selfloop transitions, 132 changer transitions 4/563 dead transitions. [2021-06-13 08:18:33,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 563 transitions, 12936 flow [2021-06-13 08:18:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:33,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-06-13 08:18:33,864 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-06-13 08:18:33,864 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-06-13 08:18:33,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-06-13 08:18:33,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:33,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-06-13 08:18:33,865 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) [2021-06-13 08:18:33,865 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) [2021-06-13 08:18:33,865 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) [2021-06-13 08:18:33,865 INFO L185 Difference]: Start difference. First operand has 343 places, 528 transitions, 11515 flow. Second operand 9 states and 301 transitions. [2021-06-13 08:18:33,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 563 transitions, 12936 flow [2021-06-13 08:18:34,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 563 transitions, 12774 flow, removed 46 selfloop flow, removed 4 redundant places. [2021-06-13 08:18:34,374 INFO L241 Difference]: Finished difference. Result has 351 places, 530 transitions, 11787 flow [2021-06-13 08:18:34,375 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11353, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11787, PETRI_PLACES=351, PETRI_TRANSITIONS=530} [2021-06-13 08:18:34,375 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 312 predicate places. [2021-06-13 08:18:34,375 INFO L482 AbstractCegarLoop]: Abstraction has has 351 places, 530 transitions, 11787 flow [2021-06-13 08:18:34,375 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) [2021-06-13 08:18:34,375 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:34,375 INFO L255 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] [2021-06-13 08:18:34,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-13 08:18:34,376 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:34,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:34,376 INFO L82 PathProgramCache]: Analyzing trace with hash 992463522, now seen corresponding path program 31 times [2021-06-13 08:18:34,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:34,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304423697] [2021-06-13 08:18:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:34,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:34,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:34,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:34,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:34,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:34,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:34,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:34,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:34,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:34,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:34,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:34,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:34,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:34,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:34,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:34,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:34,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:34,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:34,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:34,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304423697] [2021-06-13 08:18:34,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304423697] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:34,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:34,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:34,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499282803] [2021-06-13 08:18:34,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:34,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:34,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:34,449 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:34,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 530 transitions, 11787 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) [2021-06-13 08:18:34,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:34,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:34,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:35,326 INFO L129 PetriNetUnfolder]: 1459/3811 cut-off events. [2021-06-13 08:18:35,326 INFO L130 PetriNetUnfolder]: For 100612/100612 co-relation queries the response was YES. [2021-06-13 08:18:35,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35202 conditions, 3811 events. 1459/3811 cut-off events. For 100612/100612 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 36545 event pairs, 191 based on Foata normal form. 1/3810 useless extension candidates. Maximal degree in co-relation 33723. Up to 2134 conditions per place. [2021-06-13 08:18:35,383 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 481 selfloop transitions, 90 changer transitions 21/602 dead transitions. [2021-06-13 08:18:35,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 602 transitions, 15005 flow [2021-06-13 08:18:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:35,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-06-13 08:18:35,384 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:18:35,384 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-06-13 08:18:35,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-06-13 08:18:35,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:35,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-06-13 08:18:35,385 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) [2021-06-13 08:18:35,385 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) [2021-06-13 08:18:35,385 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) [2021-06-13 08:18:35,386 INFO L185 Difference]: Start difference. First operand has 351 places, 530 transitions, 11787 flow. Second operand 9 states and 297 transitions. [2021-06-13 08:18:35,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 602 transitions, 15005 flow [2021-06-13 08:18:36,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 602 transitions, 14809 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-13 08:18:36,042 INFO L241 Difference]: Finished difference. Result has 358 places, 556 transitions, 12784 flow [2021-06-13 08:18:36,043 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11623, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12784, PETRI_PLACES=358, PETRI_TRANSITIONS=556} [2021-06-13 08:18:36,043 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 319 predicate places. [2021-06-13 08:18:36,043 INFO L482 AbstractCegarLoop]: Abstraction has has 358 places, 556 transitions, 12784 flow [2021-06-13 08:18:36,043 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) [2021-06-13 08:18:36,043 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:36,043 INFO L255 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] [2021-06-13 08:18:36,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-13 08:18:36,043 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:36,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:36,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1527786100, now seen corresponding path program 32 times [2021-06-13 08:18:36,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:36,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125640029] [2021-06-13 08:18:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:36,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:36,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:36,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:36,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:36,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:36,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:36,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:36,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:36,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:36,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:36,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:36,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:36,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:36,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:36,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:36,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:36,108 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:36,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:36,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:36,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125640029] [2021-06-13 08:18:36,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125640029] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:36,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:36,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:36,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632709380] [2021-06-13 08:18:36,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:36,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:36,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:36,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:36,112 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:36,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 556 transitions, 12784 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) [2021-06-13 08:18:36,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:36,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:36,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:36,990 INFO L129 PetriNetUnfolder]: 1391/3623 cut-off events. [2021-06-13 08:18:36,990 INFO L130 PetriNetUnfolder]: For 103373/103373 co-relation queries the response was YES. [2021-06-13 08:18:37,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33250 conditions, 3623 events. 1391/3623 cut-off events. For 103373/103373 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 34344 event pairs, 201 based on Foata normal form. 1/3622 useless extension candidates. Maximal degree in co-relation 31816. Up to 1886 conditions per place. [2021-06-13 08:18:37,050 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 453 selfloop transitions, 128 changer transitions 19/610 dead transitions. [2021-06-13 08:18:37,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 610 transitions, 14854 flow [2021-06-13 08:18:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-06-13 08:18:37,051 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:18:37,051 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-06-13 08:18:37,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-06-13 08:18:37,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:37,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-06-13 08:18:37,052 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) [2021-06-13 08:18:37,052 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) [2021-06-13 08:18:37,052 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) [2021-06-13 08:18:37,052 INFO L185 Difference]: Start difference. First operand has 358 places, 556 transitions, 12784 flow. Second operand 9 states and 297 transitions. [2021-06-13 08:18:37,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 610 transitions, 14854 flow [2021-06-13 08:18:37,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 610 transitions, 14676 flow, removed 55 selfloop flow, removed 3 redundant places. [2021-06-13 08:18:37,722 INFO L241 Difference]: Finished difference. Result has 368 places, 566 transitions, 13233 flow [2021-06-13 08:18:37,723 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12608, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13233, PETRI_PLACES=368, PETRI_TRANSITIONS=566} [2021-06-13 08:18:37,723 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 329 predicate places. [2021-06-13 08:18:37,723 INFO L482 AbstractCegarLoop]: Abstraction has has 368 places, 566 transitions, 13233 flow [2021-06-13 08:18:37,723 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) [2021-06-13 08:18:37,723 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:37,723 INFO L255 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] [2021-06-13 08:18:37,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-13 08:18:37,723 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:37,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:37,724 INFO L82 PathProgramCache]: Analyzing trace with hash -232390714, now seen corresponding path program 33 times [2021-06-13 08:18:37,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:37,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627338527] [2021-06-13 08:18:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:37,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:37,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:37,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:37,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:37,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:37,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:37,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:37,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:37,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:37,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:37,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:37,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:37,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:37,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:37,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:37,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:37,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:37,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:37,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:37,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627338527] [2021-06-13 08:18:37,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627338527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:37,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:37,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:37,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812228941] [2021-06-13 08:18:37,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:37,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:37,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:37,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:37,792 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:37,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 566 transitions, 13233 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) [2021-06-13 08:18:37,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:37,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:37,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:38,782 INFO L129 PetriNetUnfolder]: 1371/3570 cut-off events. [2021-06-13 08:18:38,782 INFO L130 PetriNetUnfolder]: For 107517/107517 co-relation queries the response was YES. [2021-06-13 08:18:38,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33301 conditions, 3570 events. 1371/3570 cut-off events. For 107517/107517 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 33816 event pairs, 206 based on Foata normal form. 1/3568 useless extension candidates. Maximal degree in co-relation 31864. Up to 1873 conditions per place. [2021-06-13 08:18:38,838 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 459 selfloop transitions, 129 changer transitions 5/603 dead transitions. [2021-06-13 08:18:38,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 603 transitions, 14900 flow [2021-06-13 08:18:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:38,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-06-13 08:18:38,840 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-06-13 08:18:38,840 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-06-13 08:18:38,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-06-13 08:18:38,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:38,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-06-13 08:18:38,841 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) [2021-06-13 08:18:38,841 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) [2021-06-13 08:18:38,841 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) [2021-06-13 08:18:38,841 INFO L185 Difference]: Start difference. First operand has 368 places, 566 transitions, 13233 flow. Second operand 9 states and 296 transitions. [2021-06-13 08:18:38,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 603 transitions, 14900 flow [2021-06-13 08:18:39,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 603 transitions, 14550 flow, removed 48 selfloop flow, removed 8 redundant places. [2021-06-13 08:18:39,376 INFO L241 Difference]: Finished difference. Result has 373 places, 574 transitions, 13448 flow [2021-06-13 08:18:39,376 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12899, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13448, PETRI_PLACES=373, PETRI_TRANSITIONS=574} [2021-06-13 08:18:39,376 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 334 predicate places. [2021-06-13 08:18:39,376 INFO L482 AbstractCegarLoop]: Abstraction has has 373 places, 574 transitions, 13448 flow [2021-06-13 08:18:39,376 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) [2021-06-13 08:18:39,376 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:39,376 INFO L255 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] [2021-06-13 08:18:39,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-13 08:18:39,376 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:39,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:39,377 INFO L82 PathProgramCache]: Analyzing trace with hash -511929676, now seen corresponding path program 34 times [2021-06-13 08:18:39,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:39,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180490819] [2021-06-13 08:18:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:39,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:39,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:39,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:39,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:39,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:39,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:39,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:39,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:39,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:39,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:39,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:39,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:39,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:39,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:39,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:39,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:39,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:39,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:39,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:39,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180490819] [2021-06-13 08:18:39,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180490819] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:39,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:39,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 08:18:39,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585189663] [2021-06-13 08:18:39,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 08:18:39,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:39,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 08:18:39,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 08:18:39,433 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:39,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 574 transitions, 13448 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) [2021-06-13 08:18:39,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:39,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:39,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:40,131 INFO L129 PetriNetUnfolder]: 1267/3052 cut-off events. [2021-06-13 08:18:40,131 INFO L130 PetriNetUnfolder]: For 101037/101037 co-relation queries the response was YES. [2021-06-13 08:18:40,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28461 conditions, 3052 events. 1267/3052 cut-off events. For 101037/101037 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 26871 event pairs, 101 based on Foata normal form. 1/3051 useless extension candidates. Maximal degree in co-relation 27026. Up to 1877 conditions per place. [2021-06-13 08:18:40,179 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 552 selfloop transitions, 48 changer transitions 0/610 dead transitions. [2021-06-13 08:18:40,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 610 transitions, 15043 flow [2021-06-13 08:18:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 08:18:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 08:18:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2021-06-13 08:18:40,180 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7694805194805194 [2021-06-13 08:18:40,180 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 237 transitions. [2021-06-13 08:18:40,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 237 transitions. [2021-06-13 08:18:40,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:40,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 237 transitions. [2021-06-13 08:18:40,181 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) [2021-06-13 08:18:40,181 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) [2021-06-13 08:18:40,181 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) [2021-06-13 08:18:40,181 INFO L185 Difference]: Start difference. First operand has 373 places, 574 transitions, 13448 flow. Second operand 7 states and 237 transitions. [2021-06-13 08:18:40,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 610 transitions, 15043 flow [2021-06-13 08:18:40,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 610 transitions, 14887 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-06-13 08:18:40,717 INFO L241 Difference]: Finished difference. Result has 380 places, 587 transitions, 13790 flow [2021-06-13 08:18:40,717 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13296, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13790, PETRI_PLACES=380, PETRI_TRANSITIONS=587} [2021-06-13 08:18:40,718 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 341 predicate places. [2021-06-13 08:18:40,718 INFO L482 AbstractCegarLoop]: Abstraction has has 380 places, 587 transitions, 13790 flow [2021-06-13 08:18:40,718 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) [2021-06-13 08:18:40,718 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:40,718 INFO L255 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] [2021-06-13 08:18:40,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-13 08:18:40,718 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:40,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1439599522, now seen corresponding path program 1 times [2021-06-13 08:18:40,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:40,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148981842] [2021-06-13 08:18:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:40,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:40,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:18:40,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:40,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 08:18:40,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:40,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 08:18:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:40,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:40,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148981842] [2021-06-13 08:18:40,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148981842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:40,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:40,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 08:18:40,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648131883] [2021-06-13 08:18:40,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 08:18:40,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:40,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 08:18:40,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 08:18:40,740 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 44 [2021-06-13 08:18:40,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 587 transitions, 13790 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) [2021-06-13 08:18:40,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:40,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 44 [2021-06-13 08:18:40,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:40,918 INFO L129 PetriNetUnfolder]: 348/1050 cut-off events. [2021-06-13 08:18:40,918 INFO L130 PetriNetUnfolder]: For 32939/33011 co-relation queries the response was YES. [2021-06-13 08:18:40,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10402 conditions, 1050 events. 348/1050 cut-off events. For 32939/33011 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 8883 event pairs, 21 based on Foata normal form. 47/1096 useless extension candidates. Maximal degree in co-relation 10218. Up to 292 conditions per place. [2021-06-13 08:18:40,935 INFO L132 encePairwiseOnDemand]: 42/44 looper letters, 1 selfloop transitions, 1 changer transitions 2/585 dead transitions. [2021-06-13 08:18:40,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 585 transitions, 13788 flow [2021-06-13 08:18:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 08:18:40,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 08:18:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2021-06-13 08:18:40,936 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9090909090909091 [2021-06-13 08:18:40,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2021-06-13 08:18:40,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2021-06-13 08:18:40,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:40,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2021-06-13 08:18:40,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:18:40,937 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) [2021-06-13 08:18:40,937 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) [2021-06-13 08:18:40,937 INFO L185 Difference]: Start difference. First operand has 380 places, 587 transitions, 13790 flow. Second operand 3 states and 120 transitions. [2021-06-13 08:18:40,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 585 transitions, 13788 flow [2021-06-13 08:18:41,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 585 transitions, 13617 flow, removed 77 selfloop flow, removed 1 redundant places. [2021-06-13 08:18:41,189 INFO L241 Difference]: Finished difference. Result has 381 places, 583 transitions, 13521 flow [2021-06-13 08:18:41,189 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13613, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=13521, PETRI_PLACES=381, PETRI_TRANSITIONS=583} [2021-06-13 08:18:41,190 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 342 predicate places. [2021-06-13 08:18:41,190 INFO L482 AbstractCegarLoop]: Abstraction has has 381 places, 583 transitions, 13521 flow [2021-06-13 08:18:41,190 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) [2021-06-13 08:18:41,190 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:41,190 INFO L255 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] [2021-06-13 08:18:41,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-13 08:18:41,190 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:41,190 INFO L82 PathProgramCache]: Analyzing trace with hash 77396938, now seen corresponding path program 35 times [2021-06-13 08:18:41,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:41,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285569447] [2021-06-13 08:18:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:41,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:41,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:41,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:41,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:41,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:41,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:41,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:41,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:41,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:41,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:41,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:41,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:41,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:41,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:41,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:41,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:41,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:41,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:41,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:41,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285569447] [2021-06-13 08:18:41,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285569447] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:41,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:41,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:41,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663722347] [2021-06-13 08:18:41,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:41,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:41,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:41,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:41,262 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:41,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 583 transitions, 13521 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) [2021-06-13 08:18:41,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:41,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:41,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:42,045 INFO L129 PetriNetUnfolder]: 1257/2982 cut-off events. [2021-06-13 08:18:42,045 INFO L130 PetriNetUnfolder]: For 101365/101365 co-relation queries the response was YES. [2021-06-13 08:18:42,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28378 conditions, 2982 events. 1257/2982 cut-off events. For 101365/101365 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 25536 event pairs, 87 based on Foata normal form. 1/2982 useless extension candidates. Maximal degree in co-relation 26895. Up to 1905 conditions per place. [2021-06-13 08:18:42,093 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 533 selfloop transitions, 86 changer transitions 9/636 dead transitions. [2021-06-13 08:18:42,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 636 transitions, 15667 flow [2021-06-13 08:18:42,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:42,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-06-13 08:18:42,094 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:18:42,094 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-06-13 08:18:42,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-06-13 08:18:42,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:42,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-06-13 08:18:42,095 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) [2021-06-13 08:18:42,095 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) [2021-06-13 08:18:42,095 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) [2021-06-13 08:18:42,095 INFO L185 Difference]: Start difference. First operand has 381 places, 583 transitions, 13521 flow. Second operand 9 states and 297 transitions. [2021-06-13 08:18:42,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 636 transitions, 15667 flow [2021-06-13 08:18:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 636 transitions, 15665 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 08:18:42,791 INFO L241 Difference]: Finished difference. Result has 394 places, 602 transitions, 14377 flow [2021-06-13 08:18:42,792 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13520, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14377, PETRI_PLACES=394, PETRI_TRANSITIONS=602} [2021-06-13 08:18:42,792 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 355 predicate places. [2021-06-13 08:18:42,792 INFO L482 AbstractCegarLoop]: Abstraction has has 394 places, 602 transitions, 14377 flow [2021-06-13 08:18:42,792 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) [2021-06-13 08:18:42,792 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:42,792 INFO L255 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] [2021-06-13 08:18:42,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-13 08:18:42,792 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:42,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:42,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1641046268, now seen corresponding path program 36 times [2021-06-13 08:18:42,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:42,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977465728] [2021-06-13 08:18:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:42,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:42,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:42,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:42,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:42,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:42,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:42,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:42,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:42,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:42,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:42,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:42,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:42,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:42,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:42,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:42,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:42,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:42,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:42,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:42,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977465728] [2021-06-13 08:18:42,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977465728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:42,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:42,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:42,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974432235] [2021-06-13 08:18:42,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:42,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:42,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:42,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:42,850 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:42,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 602 transitions, 14377 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) [2021-06-13 08:18:42,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:42,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:42,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:43,639 INFO L129 PetriNetUnfolder]: 1263/2977 cut-off events. [2021-06-13 08:18:43,639 INFO L130 PetriNetUnfolder]: For 110080/110080 co-relation queries the response was YES. [2021-06-13 08:18:43,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29394 conditions, 2977 events. 1263/2977 cut-off events. For 110080/110080 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 25541 event pairs, 97 based on Foata normal form. 1/2977 useless extension candidates. Maximal degree in co-relation 29153. Up to 1923 conditions per place. [2021-06-13 08:18:43,695 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 554 selfloop transitions, 80 changer transitions 9/651 dead transitions. [2021-06-13 08:18:43,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 651 transitions, 16675 flow [2021-06-13 08:18:43,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2021-06-13 08:18:43,696 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2021-06-13 08:18:43,696 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2021-06-13 08:18:43,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2021-06-13 08:18:43,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:43,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2021-06-13 08:18:43,697 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) [2021-06-13 08:18:43,697 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) [2021-06-13 08:18:43,697 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) [2021-06-13 08:18:43,697 INFO L185 Difference]: Start difference. First operand has 394 places, 602 transitions, 14377 flow. Second operand 8 states and 266 transitions. [2021-06-13 08:18:43,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 651 transitions, 16675 flow [2021-06-13 08:18:44,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 651 transitions, 16119 flow, removed 259 selfloop flow, removed 2 redundant places. [2021-06-13 08:18:44,504 INFO L241 Difference]: Finished difference. Result has 404 places, 619 transitions, 14807 flow [2021-06-13 08:18:44,504 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13957, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14807, PETRI_PLACES=404, PETRI_TRANSITIONS=619} [2021-06-13 08:18:44,505 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 365 predicate places. [2021-06-13 08:18:44,505 INFO L482 AbstractCegarLoop]: Abstraction has has 404 places, 619 transitions, 14807 flow [2021-06-13 08:18:44,505 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) [2021-06-13 08:18:44,505 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:44,505 INFO L255 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] [2021-06-13 08:18:44,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-13 08:18:44,505 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:44,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:44,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1049422532, now seen corresponding path program 37 times [2021-06-13 08:18:44,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:44,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976878277] [2021-06-13 08:18:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:44,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:44,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:44,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:44,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:44,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:44,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:44,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:44,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:44,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:44,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:44,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:44,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:44,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:44,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:44,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:44,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:44,565 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:44,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:44,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:44,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976878277] [2021-06-13 08:18:44,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976878277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:44,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:44,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:44,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600603591] [2021-06-13 08:18:44,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:44,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:44,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:44,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:44,569 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:44,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 619 transitions, 14807 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) [2021-06-13 08:18:44,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:44,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:44,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:45,425 INFO L129 PetriNetUnfolder]: 1283/3023 cut-off events. [2021-06-13 08:18:45,425 INFO L130 PetriNetUnfolder]: For 124863/124863 co-relation queries the response was YES. [2021-06-13 08:18:45,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30138 conditions, 3023 events. 1283/3023 cut-off events. For 124863/124863 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 26062 event pairs, 126 based on Foata normal form. 1/3022 useless extension candidates. Maximal degree in co-relation 29892. Up to 1715 conditions per place. [2021-06-13 08:18:45,473 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 573 selfloop transitions, 73 changer transitions 8/662 dead transitions. [2021-06-13 08:18:45,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 662 transitions, 16647 flow [2021-06-13 08:18:45,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2021-06-13 08:18:45,474 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2021-06-13 08:18:45,474 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 270 transitions. [2021-06-13 08:18:45,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 270 transitions. [2021-06-13 08:18:45,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:45,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 270 transitions. [2021-06-13 08:18:45,475 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) [2021-06-13 08:18:45,475 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) [2021-06-13 08:18:45,475 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) [2021-06-13 08:18:45,475 INFO L185 Difference]: Start difference. First operand has 404 places, 619 transitions, 14807 flow. Second operand 8 states and 270 transitions. [2021-06-13 08:18:45,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 662 transitions, 16647 flow [2021-06-13 08:18:46,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 662 transitions, 16377 flow, removed 135 selfloop flow, removed 0 redundant places. [2021-06-13 08:18:46,215 INFO L241 Difference]: Finished difference. Result has 414 places, 627 transitions, 14860 flow [2021-06-13 08:18:46,216 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14537, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14860, PETRI_PLACES=414, PETRI_TRANSITIONS=627} [2021-06-13 08:18:46,216 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 375 predicate places. [2021-06-13 08:18:46,216 INFO L482 AbstractCegarLoop]: Abstraction has has 414 places, 627 transitions, 14860 flow [2021-06-13 08:18:46,216 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) [2021-06-13 08:18:46,216 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:46,216 INFO L255 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] [2021-06-13 08:18:46,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-13 08:18:46,217 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:46,217 INFO L82 PathProgramCache]: Analyzing trace with hash -46614074, now seen corresponding path program 38 times [2021-06-13 08:18:46,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:46,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102717567] [2021-06-13 08:18:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:46,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:46,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:46,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:46,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:46,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:46,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:46,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:46,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:46,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:46,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:46,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:46,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:46,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:46,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:46,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:46,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:46,268 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:46,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:46,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:46,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102717567] [2021-06-13 08:18:46,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102717567] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:46,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:46,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:46,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310181300] [2021-06-13 08:18:46,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:46,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:46,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:46,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:46,273 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:46,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 627 transitions, 14860 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) [2021-06-13 08:18:46,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:46,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:46,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:47,092 INFO L129 PetriNetUnfolder]: 1265/3010 cut-off events. [2021-06-13 08:18:47,092 INFO L130 PetriNetUnfolder]: For 121203/121203 co-relation queries the response was YES. [2021-06-13 08:18:47,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30073 conditions, 3010 events. 1265/3010 cut-off events. For 121203/121203 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 26103 event pairs, 100 based on Foata normal form. 1/3010 useless extension candidates. Maximal degree in co-relation 29820. Up to 1867 conditions per place. [2021-06-13 08:18:47,153 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 568 selfloop transitions, 71 changer transitions 12/659 dead transitions. [2021-06-13 08:18:47,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 659 transitions, 16670 flow [2021-06-13 08:18:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-06-13 08:18:47,154 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-06-13 08:18:47,154 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-06-13 08:18:47,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-06-13 08:18:47,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:47,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-06-13 08:18:47,154 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) [2021-06-13 08:18:47,155 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) [2021-06-13 08:18:47,155 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) [2021-06-13 08:18:47,155 INFO L185 Difference]: Start difference. First operand has 414 places, 627 transitions, 14860 flow. Second operand 8 states and 268 transitions. [2021-06-13 08:18:47,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 659 transitions, 16670 flow [2021-06-13 08:18:47,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 659 transitions, 16497 flow, removed 70 selfloop flow, removed 2 redundant places. [2021-06-13 08:18:47,956 INFO L241 Difference]: Finished difference. Result has 425 places, 622 transitions, 14863 flow [2021-06-13 08:18:47,957 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14691, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14863, PETRI_PLACES=425, PETRI_TRANSITIONS=622} [2021-06-13 08:18:47,957 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 386 predicate places. [2021-06-13 08:18:47,957 INFO L482 AbstractCegarLoop]: Abstraction has has 425 places, 622 transitions, 14863 flow [2021-06-13 08:18:47,957 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) [2021-06-13 08:18:47,957 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:47,957 INFO L255 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] [2021-06-13 08:18:47,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-13 08:18:47,957 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:47,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1149620404, now seen corresponding path program 39 times [2021-06-13 08:18:47,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:47,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566273753] [2021-06-13 08:18:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:47,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:47,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:47,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:47,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:47,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:47,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:47,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:47,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:47,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:47,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:47,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:47,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:48,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:48,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:48,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:48,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:48,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:48,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:48,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:48,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566273753] [2021-06-13 08:18:48,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566273753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:48,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:48,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:48,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656931037] [2021-06-13 08:18:48,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:48,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:48,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:48,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:48,016 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:48,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 622 transitions, 14863 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) [2021-06-13 08:18:48,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:48,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:48,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:48,866 INFO L129 PetriNetUnfolder]: 1263/3004 cut-off events. [2021-06-13 08:18:48,866 INFO L130 PetriNetUnfolder]: For 124996/124996 co-relation queries the response was YES. [2021-06-13 08:18:48,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29992 conditions, 3004 events. 1263/3004 cut-off events. For 124996/124996 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 26028 event pairs, 97 based on Foata normal form. 1/3004 useless extension candidates. Maximal degree in co-relation 29732. Up to 1810 conditions per place. [2021-06-13 08:18:48,917 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 566 selfloop transitions, 84 changer transitions 11/669 dead transitions. [2021-06-13 08:18:48,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 669 transitions, 16864 flow [2021-06-13 08:18:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-06-13 08:18:48,918 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-06-13 08:18:48,918 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-06-13 08:18:48,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-06-13 08:18:48,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:48,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-06-13 08:18:48,919 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) [2021-06-13 08:18:48,919 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) [2021-06-13 08:18:48,919 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) [2021-06-13 08:18:48,919 INFO L185 Difference]: Start difference. First operand has 425 places, 622 transitions, 14863 flow. Second operand 8 states and 269 transitions. [2021-06-13 08:18:48,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 669 transitions, 16864 flow [2021-06-13 08:18:49,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 669 transitions, 16595 flow, removed 35 selfloop flow, removed 10 redundant places. [2021-06-13 08:18:49,736 INFO L241 Difference]: Finished difference. Result has 428 places, 632 transitions, 15164 flow [2021-06-13 08:18:49,737 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14604, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15164, PETRI_PLACES=428, PETRI_TRANSITIONS=632} [2021-06-13 08:18:49,737 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 389 predicate places. [2021-06-13 08:18:49,737 INFO L482 AbstractCegarLoop]: Abstraction has has 428 places, 632 transitions, 15164 flow [2021-06-13 08:18:49,737 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) [2021-06-13 08:18:49,737 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:49,737 INFO L255 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] [2021-06-13 08:18:49,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-13 08:18:49,737 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:49,738 INFO L82 PathProgramCache]: Analyzing trace with hash -656698588, now seen corresponding path program 40 times [2021-06-13 08:18:49,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:49,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293536213] [2021-06-13 08:18:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:49,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:49,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:49,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:49,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:49,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:49,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:49,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:49,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:49,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:49,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:49,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:49,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:49,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:49,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:49,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:49,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:49,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:49,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:49,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:49,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293536213] [2021-06-13 08:18:49,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293536213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:49,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:49,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:49,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224947475] [2021-06-13 08:18:49,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:49,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:49,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:49,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:49,804 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:49,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 632 transitions, 15164 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) [2021-06-13 08:18:49,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:49,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:49,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:50,628 INFO L129 PetriNetUnfolder]: 1249/2972 cut-off events. [2021-06-13 08:18:50,629 INFO L130 PetriNetUnfolder]: For 123691/123691 co-relation queries the response was YES. [2021-06-13 08:18:50,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29868 conditions, 2972 events. 1249/2972 cut-off events. For 123691/123691 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 25677 event pairs, 107 based on Foata normal form. 1/2973 useless extension candidates. Maximal degree in co-relation 29607. Up to 1675 conditions per place. [2021-06-13 08:18:50,681 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 523 selfloop transitions, 128 changer transitions 8/667 dead transitions. [2021-06-13 08:18:50,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 667 transitions, 17018 flow [2021-06-13 08:18:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:18:50,683 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:18:50,683 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:18:50,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:18:50,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:50,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:18:50,683 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) [2021-06-13 08:18:50,684 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) [2021-06-13 08:18:50,684 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) [2021-06-13 08:18:50,684 INFO L185 Difference]: Start difference. First operand has 428 places, 632 transitions, 15164 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:18:50,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 667 transitions, 17018 flow [2021-06-13 08:18:51,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 667 transitions, 16844 flow, removed 52 selfloop flow, removed 4 redundant places. [2021-06-13 08:18:51,489 INFO L241 Difference]: Finished difference. Result has 438 places, 631 transitions, 15459 flow [2021-06-13 08:18:51,490 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14994, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15459, PETRI_PLACES=438, PETRI_TRANSITIONS=631} [2021-06-13 08:18:51,490 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 399 predicate places. [2021-06-13 08:18:51,490 INFO L482 AbstractCegarLoop]: Abstraction has has 438 places, 631 transitions, 15459 flow [2021-06-13 08:18:51,490 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) [2021-06-13 08:18:51,490 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:51,490 INFO L255 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] [2021-06-13 08:18:51,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-13 08:18:51,491 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:51,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:51,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1396259980, now seen corresponding path program 41 times [2021-06-13 08:18:51,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:51,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109657853] [2021-06-13 08:18:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:51,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:51,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:51,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:51,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:51,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:51,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:51,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:51,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:51,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:51,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:51,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:51,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:51,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:51,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:51,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:51,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:51,549 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:51,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:51,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:51,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109657853] [2021-06-13 08:18:51,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109657853] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:51,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:51,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:51,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681123014] [2021-06-13 08:18:51,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:51,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:51,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:51,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:51,553 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:51,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 631 transitions, 15459 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) [2021-06-13 08:18:51,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:51,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:51,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:52,396 INFO L129 PetriNetUnfolder]: 1245/2947 cut-off events. [2021-06-13 08:18:52,396 INFO L130 PetriNetUnfolder]: For 126277/126277 co-relation queries the response was YES. [2021-06-13 08:18:52,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30267 conditions, 2947 events. 1245/2947 cut-off events. For 126277/126277 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 25379 event pairs, 83 based on Foata normal form. 1/2948 useless extension candidates. Maximal degree in co-relation 30000. Up to 1864 conditions per place. [2021-06-13 08:18:52,443 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 574 selfloop transitions, 79 changer transitions 13/674 dead transitions. [2021-06-13 08:18:52,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 674 transitions, 17398 flow [2021-06-13 08:18:52,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-06-13 08:18:52,444 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-06-13 08:18:52,444 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-06-13 08:18:52,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-06-13 08:18:52,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:52,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-06-13 08:18:52,445 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) [2021-06-13 08:18:52,445 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) [2021-06-13 08:18:52,445 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) [2021-06-13 08:18:52,445 INFO L185 Difference]: Start difference. First operand has 438 places, 631 transitions, 15459 flow. Second operand 8 states and 267 transitions. [2021-06-13 08:18:52,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 674 transitions, 17398 flow [2021-06-13 08:18:53,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 674 transitions, 17039 flow, removed 36 selfloop flow, removed 10 redundant places. [2021-06-13 08:18:53,222 INFO L241 Difference]: Finished difference. Result has 440 places, 637 transitions, 15528 flow [2021-06-13 08:18:53,223 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15114, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15528, PETRI_PLACES=440, PETRI_TRANSITIONS=637} [2021-06-13 08:18:53,223 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 401 predicate places. [2021-06-13 08:18:53,223 INFO L482 AbstractCegarLoop]: Abstraction has has 440 places, 637 transitions, 15528 flow [2021-06-13 08:18:53,223 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) [2021-06-13 08:18:53,223 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:53,223 INFO L255 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] [2021-06-13 08:18:53,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-13 08:18:53,224 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:53,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:53,224 INFO L82 PathProgramCache]: Analyzing trace with hash -885128672, now seen corresponding path program 42 times [2021-06-13 08:18:53,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:53,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521846494] [2021-06-13 08:18:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:53,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:53,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:53,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:53,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:53,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:53,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:53,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:53,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:53,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:53,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:53,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:53,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:53,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:53,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:53,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:53,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:53,299 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:53,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:53,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:53,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521846494] [2021-06-13 08:18:53,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521846494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:53,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:53,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:53,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793132991] [2021-06-13 08:18:53,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:53,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:53,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:53,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:53,303 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:53,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 637 transitions, 15528 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) [2021-06-13 08:18:53,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:53,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:53,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:54,153 INFO L129 PetriNetUnfolder]: 1243/2930 cut-off events. [2021-06-13 08:18:54,153 INFO L130 PetriNetUnfolder]: For 131560/131560 co-relation queries the response was YES. [2021-06-13 08:18:54,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30195 conditions, 2930 events. 1243/2930 cut-off events. For 131560/131560 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 25113 event pairs, 127 based on Foata normal form. 1/2931 useless extension candidates. Maximal degree in co-relation 29926. Up to 1592 conditions per place. [2021-06-13 08:18:54,206 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 552 selfloop transitions, 82 changer transitions 32/674 dead transitions. [2021-06-13 08:18:54,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 674 transitions, 17472 flow [2021-06-13 08:18:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:54,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-06-13 08:18:54,207 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-06-13 08:18:54,207 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-06-13 08:18:54,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-06-13 08:18:54,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:54,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-06-13 08:18:54,212 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) [2021-06-13 08:18:54,213 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) [2021-06-13 08:18:54,213 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) [2021-06-13 08:18:54,213 INFO L185 Difference]: Start difference. First operand has 440 places, 637 transitions, 15528 flow. Second operand 9 states and 301 transitions. [2021-06-13 08:18:54,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 674 transitions, 17472 flow [2021-06-13 08:18:54,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 674 transitions, 17281 flow, removed 38 selfloop flow, removed 5 redundant places. [2021-06-13 08:18:54,961 INFO L241 Difference]: Finished difference. Result has 450 places, 613 transitions, 14989 flow [2021-06-13 08:18:54,962 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15345, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14989, PETRI_PLACES=450, PETRI_TRANSITIONS=613} [2021-06-13 08:18:54,962 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 411 predicate places. [2021-06-13 08:18:54,962 INFO L482 AbstractCegarLoop]: Abstraction has has 450 places, 613 transitions, 14989 flow [2021-06-13 08:18:54,962 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) [2021-06-13 08:18:54,962 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:54,962 INFO L255 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] [2021-06-13 08:18:54,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-13 08:18:54,962 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:54,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1147470234, now seen corresponding path program 43 times [2021-06-13 08:18:54,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:54,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059561266] [2021-06-13 08:18:54,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:54,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:54,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:54,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:54,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:54,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:54,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:54,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:54,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:54,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:54,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:54,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:54,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:55,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:55,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:55,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:55,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:55,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:55,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:55,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:55,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059561266] [2021-06-13 08:18:55,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059561266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:55,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:55,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:55,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752235108] [2021-06-13 08:18:55,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:55,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:55,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:55,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:55,033 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:55,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 613 transitions, 14989 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) [2021-06-13 08:18:55,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:55,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:55,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:55,943 INFO L129 PetriNetUnfolder]: 1186/2795 cut-off events. [2021-06-13 08:18:55,944 INFO L130 PetriNetUnfolder]: For 124361/124361 co-relation queries the response was YES. [2021-06-13 08:18:55,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29288 conditions, 2795 events. 1186/2795 cut-off events. For 124361/124361 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 23705 event pairs, 84 based on Foata normal form. 1/2796 useless extension candidates. Maximal degree in co-relation 29014. Up to 1693 conditions per place. [2021-06-13 08:18:55,992 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 522 selfloop transitions, 113 changer transitions 10/653 dead transitions. [2021-06-13 08:18:55,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 653 transitions, 16768 flow [2021-06-13 08:18:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:18:55,993 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:18:55,993 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:18:55,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:18:55,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:55,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:18:55,994 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) [2021-06-13 08:18:55,994 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) [2021-06-13 08:18:55,994 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) [2021-06-13 08:18:55,994 INFO L185 Difference]: Start difference. First operand has 450 places, 613 transitions, 14989 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:18:55,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 653 transitions, 16768 flow [2021-06-13 08:18:56,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 653 transitions, 15950 flow, removed 29 selfloop flow, removed 45 redundant places. [2021-06-13 08:18:56,759 INFO L241 Difference]: Finished difference. Result has 419 places, 617 transitions, 14670 flow [2021-06-13 08:18:56,759 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14193, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14670, PETRI_PLACES=419, PETRI_TRANSITIONS=617} [2021-06-13 08:18:56,760 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 380 predicate places. [2021-06-13 08:18:56,760 INFO L482 AbstractCegarLoop]: Abstraction has has 419 places, 617 transitions, 14670 flow [2021-06-13 08:18:56,760 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) [2021-06-13 08:18:56,760 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:56,760 INFO L255 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] [2021-06-13 08:18:56,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-13 08:18:56,762 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:56,762 INFO L82 PathProgramCache]: Analyzing trace with hash -767172182, now seen corresponding path program 44 times [2021-06-13 08:18:56,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:56,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477353030] [2021-06-13 08:18:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:56,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:56,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:56,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:56,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:56,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:56,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:56,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:56,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:56,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:56,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:56,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:56,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:56,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:56,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:56,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:56,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:56,816 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:56,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:56,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:56,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477353030] [2021-06-13 08:18:56,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477353030] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:56,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:56,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:18:56,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936590488] [2021-06-13 08:18:56,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:18:56,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:56,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:18:56,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:18:56,820 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:56,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 617 transitions, 14670 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) [2021-06-13 08:18:56,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:56,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:56,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:57,571 INFO L129 PetriNetUnfolder]: 1186/2795 cut-off events. [2021-06-13 08:18:57,571 INFO L130 PetriNetUnfolder]: For 94640/94640 co-relation queries the response was YES. [2021-06-13 08:18:57,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28132 conditions, 2795 events. 1186/2795 cut-off events. For 94640/94640 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 23741 event pairs, 78 based on Foata normal form. 1/2796 useless extension candidates. Maximal degree in co-relation 27881. Up to 1767 conditions per place. [2021-06-13 08:18:57,619 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 545 selfloop transitions, 89 changer transitions 12/654 dead transitions. [2021-06-13 08:18:57,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 654 transitions, 16673 flow [2021-06-13 08:18:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:18:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:18:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-06-13 08:18:57,620 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-06-13 08:18:57,620 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-06-13 08:18:57,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-06-13 08:18:57,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:57,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-06-13 08:18:57,621 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) [2021-06-13 08:18:57,621 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) [2021-06-13 08:18:57,621 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) [2021-06-13 08:18:57,621 INFO L185 Difference]: Start difference. First operand has 419 places, 617 transitions, 14670 flow. Second operand 8 states and 267 transitions. [2021-06-13 08:18:57,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 654 transitions, 16673 flow [2021-06-13 08:18:58,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 654 transitions, 16501 flow, removed 29 selfloop flow, removed 4 redundant places. [2021-06-13 08:18:58,363 INFO L241 Difference]: Finished difference. Result has 427 places, 618 transitions, 14879 flow [2021-06-13 08:18:58,364 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14500, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14879, PETRI_PLACES=427, PETRI_TRANSITIONS=618} [2021-06-13 08:18:58,364 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 388 predicate places. [2021-06-13 08:18:58,364 INFO L482 AbstractCegarLoop]: Abstraction has has 427 places, 618 transitions, 14879 flow [2021-06-13 08:18:58,364 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) [2021-06-13 08:18:58,364 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:18:58,364 INFO L255 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] [2021-06-13 08:18:58,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-13 08:18:58,364 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:18:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:18:58,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1564056850, now seen corresponding path program 45 times [2021-06-13 08:18:58,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:18:58,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140837248] [2021-06-13 08:18:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:18:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:18:58,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:58,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:58,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:58,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:58,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:58,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:58,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:58,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:58,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:58,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:58,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:58,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:18:58,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:58,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:18:58,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:18:58,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:18:58,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:18:58,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:18:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:18:58,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:18:58,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140837248] [2021-06-13 08:18:58,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140837248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:18:58,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:18:58,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:18:58,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667717316] [2021-06-13 08:18:58,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:18:58,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:18:58,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:18:58,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:18:58,433 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:18:58,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 618 transitions, 14879 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) [2021-06-13 08:18:58,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:18:58,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:18:58,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:18:59,382 INFO L129 PetriNetUnfolder]: 1182/2777 cut-off events. [2021-06-13 08:18:59,385 INFO L130 PetriNetUnfolder]: For 99680/99680 co-relation queries the response was YES. [2021-06-13 08:18:59,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28439 conditions, 2777 events. 1182/2777 cut-off events. For 99680/99680 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 23563 event pairs, 88 based on Foata normal form. 1/2778 useless extension candidates. Maximal degree in co-relation 28184. Up to 1707 conditions per place. [2021-06-13 08:18:59,432 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 510 selfloop transitions, 129 changer transitions 14/661 dead transitions. [2021-06-13 08:18:59,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 661 transitions, 17129 flow [2021-06-13 08:18:59,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:18:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:18:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-06-13 08:18:59,433 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:18:59,433 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-06-13 08:18:59,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-06-13 08:18:59,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:18:59,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-06-13 08:18:59,434 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) [2021-06-13 08:18:59,434 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) [2021-06-13 08:18:59,434 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) [2021-06-13 08:18:59,434 INFO L185 Difference]: Start difference. First operand has 427 places, 618 transitions, 14879 flow. Second operand 9 states and 297 transitions. [2021-06-13 08:18:59,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 661 transitions, 17129 flow [2021-06-13 08:19:00,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 661 transitions, 16914 flow, removed 63 selfloop flow, removed 4 redundant places. [2021-06-13 08:19:00,164 INFO L241 Difference]: Finished difference. Result has 437 places, 622 transitions, 15368 flow [2021-06-13 08:19:00,164 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14674, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15368, PETRI_PLACES=437, PETRI_TRANSITIONS=622} [2021-06-13 08:19:00,165 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 398 predicate places. [2021-06-13 08:19:00,165 INFO L482 AbstractCegarLoop]: Abstraction has has 437 places, 622 transitions, 15368 flow [2021-06-13 08:19:00,165 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) [2021-06-13 08:19:00,165 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:00,165 INFO L255 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] [2021-06-13 08:19:00,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-13 08:19:00,165 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:00,165 INFO L82 PathProgramCache]: Analyzing trace with hash 434654470, now seen corresponding path program 46 times [2021-06-13 08:19:00,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:00,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828962468] [2021-06-13 08:19:00,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:00,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:00,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:00,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:00,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:00,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:00,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:00,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:00,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:00,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:00,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:00,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:00,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:00,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:00,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:00,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:00,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:00,229 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:00,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:00,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:00,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:00,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828962468] [2021-06-13 08:19:00,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828962468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:00,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:00,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:00,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780972384] [2021-06-13 08:19:00,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:00,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:00,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:00,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:00,233 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:00,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 622 transitions, 15368 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) [2021-06-13 08:19:00,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:00,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:00,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:01,032 INFO L129 PetriNetUnfolder]: 1198/2806 cut-off events. [2021-06-13 08:19:01,032 INFO L130 PetriNetUnfolder]: For 114026/114026 co-relation queries the response was YES. [2021-06-13 08:19:01,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29603 conditions, 2806 events. 1198/2806 cut-off events. For 114026/114026 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 23919 event pairs, 141 based on Foata normal form. 1/2807 useless extension candidates. Maximal degree in co-relation 29344. Up to 1452 conditions per place. [2021-06-13 08:19:01,084 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 539 selfloop transitions, 109 changer transitions 10/666 dead transitions. [2021-06-13 08:19:01,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 666 transitions, 17408 flow [2021-06-13 08:19:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2021-06-13 08:19:01,086 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7626262626262627 [2021-06-13 08:19:01,086 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 302 transitions. [2021-06-13 08:19:01,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 302 transitions. [2021-06-13 08:19:01,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:01,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 302 transitions. [2021-06-13 08:19:01,086 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) [2021-06-13 08:19:01,086 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) [2021-06-13 08:19:01,087 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) [2021-06-13 08:19:01,087 INFO L185 Difference]: Start difference. First operand has 437 places, 622 transitions, 15368 flow. Second operand 9 states and 302 transitions. [2021-06-13 08:19:01,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 666 transitions, 17408 flow [2021-06-13 08:19:01,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 666 transitions, 17095 flow, removed 120 selfloop flow, removed 3 redundant places. [2021-06-13 08:19:01,866 INFO L241 Difference]: Finished difference. Result has 448 places, 626 transitions, 15666 flow [2021-06-13 08:19:01,866 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15059, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15666, PETRI_PLACES=448, PETRI_TRANSITIONS=626} [2021-06-13 08:19:01,866 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 409 predicate places. [2021-06-13 08:19:01,866 INFO L482 AbstractCegarLoop]: Abstraction has has 448 places, 626 transitions, 15666 flow [2021-06-13 08:19:01,867 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) [2021-06-13 08:19:01,867 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:01,867 INFO L255 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] [2021-06-13 08:19:01,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-13 08:19:01,867 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:01,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:01,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1361457448, now seen corresponding path program 47 times [2021-06-13 08:19:01,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:01,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258109726] [2021-06-13 08:19:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:01,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:01,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:01,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:01,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:01,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:01,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:01,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:01,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:01,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:01,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:01,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:01,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:01,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:01,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:01,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:01,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:01,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:01,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:01,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:01,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258109726] [2021-06-13 08:19:01,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258109726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:01,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:01,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:01,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977249623] [2021-06-13 08:19:01,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:01,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:01,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:01,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:01,943 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:01,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 626 transitions, 15666 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) [2021-06-13 08:19:01,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:01,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:01,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:02,880 INFO L129 PetriNetUnfolder]: 1182/2797 cut-off events. [2021-06-13 08:19:02,880 INFO L130 PetriNetUnfolder]: For 110327/110327 co-relation queries the response was YES. [2021-06-13 08:19:02,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29872 conditions, 2797 events. 1182/2797 cut-off events. For 110327/110327 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 23938 event pairs, 87 based on Foata normal form. 1/2798 useless extension candidates. Maximal degree in co-relation 29606. Up to 1773 conditions per place. [2021-06-13 08:19:02,925 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 534 selfloop transitions, 112 changer transitions 5/659 dead transitions. [2021-06-13 08:19:02,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 659 transitions, 17554 flow [2021-06-13 08:19:02,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-06-13 08:19:02,926 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-06-13 08:19:02,926 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-06-13 08:19:02,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-06-13 08:19:02,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:02,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-06-13 08:19:02,926 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) [2021-06-13 08:19:02,927 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) [2021-06-13 08:19:02,927 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) [2021-06-13 08:19:02,927 INFO L185 Difference]: Start difference. First operand has 448 places, 626 transitions, 15666 flow. Second operand 9 states and 296 transitions. [2021-06-13 08:19:02,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 659 transitions, 17554 flow [2021-06-13 08:19:03,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 659 transitions, 17193 flow, removed 120 selfloop flow, removed 6 redundant places. [2021-06-13 08:19:03,816 INFO L241 Difference]: Finished difference. Result has 455 places, 630 transitions, 15879 flow [2021-06-13 08:19:03,817 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15317, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15879, PETRI_PLACES=455, PETRI_TRANSITIONS=630} [2021-06-13 08:19:03,817 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 416 predicate places. [2021-06-13 08:19:03,817 INFO L482 AbstractCegarLoop]: Abstraction has has 455 places, 630 transitions, 15879 flow [2021-06-13 08:19:03,817 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) [2021-06-13 08:19:03,817 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:03,817 INFO L255 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] [2021-06-13 08:19:03,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-13 08:19:03,817 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:03,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:03,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1881273256, now seen corresponding path program 48 times [2021-06-13 08:19:03,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:03,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239658564] [2021-06-13 08:19:03,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:03,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:03,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:03,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:03,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:03,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:03,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:03,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:03,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:03,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:03,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:03,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:03,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:03,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:03,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:03,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:03,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:03,899 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:03,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:03,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:03,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239658564] [2021-06-13 08:19:03,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239658564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:03,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:03,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:19:03,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071879848] [2021-06-13 08:19:03,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:19:03,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:03,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:19:03,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:19:03,902 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:03,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 630 transitions, 15879 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) [2021-06-13 08:19:03,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:03,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:03,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:05,010 INFO L129 PetriNetUnfolder]: 1191/2824 cut-off events. [2021-06-13 08:19:05,010 INFO L130 PetriNetUnfolder]: For 114643/114643 co-relation queries the response was YES. [2021-06-13 08:19:05,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30254 conditions, 2824 events. 1191/2824 cut-off events. For 114643/114643 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 24301 event pairs, 105 based on Foata normal form. 1/2825 useless extension candidates. Maximal degree in co-relation 29985. Up to 1685 conditions per place. [2021-06-13 08:19:05,064 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 568 selfloop transitions, 94 changer transitions 11/681 dead transitions. [2021-06-13 08:19:05,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 681 transitions, 18351 flow [2021-06-13 08:19:05,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:19:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:19:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-06-13 08:19:05,065 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:19:05,065 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-06-13 08:19:05,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-06-13 08:19:05,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:05,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-06-13 08:19:05,066 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) [2021-06-13 08:19:05,066 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) [2021-06-13 08:19:05,066 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) [2021-06-13 08:19:05,067 INFO L185 Difference]: Start difference. First operand has 455 places, 630 transitions, 15879 flow. Second operand 10 states and 330 transitions. [2021-06-13 08:19:05,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 681 transitions, 18351 flow [2021-06-13 08:19:05,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 681 transitions, 18122 flow, removed 62 selfloop flow, removed 4 redundant places. [2021-06-13 08:19:05,953 INFO L241 Difference]: Finished difference. Result has 467 places, 641 transitions, 16455 flow [2021-06-13 08:19:05,954 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15656, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16455, PETRI_PLACES=467, PETRI_TRANSITIONS=641} [2021-06-13 08:19:05,954 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 428 predicate places. [2021-06-13 08:19:05,954 INFO L482 AbstractCegarLoop]: Abstraction has has 467 places, 641 transitions, 16455 flow [2021-06-13 08:19:05,954 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) [2021-06-13 08:19:05,954 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:05,954 INFO L255 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] [2021-06-13 08:19:05,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-13 08:19:05,954 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:05,955 INFO L82 PathProgramCache]: Analyzing trace with hash 156101662, now seen corresponding path program 49 times [2021-06-13 08:19:05,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:05,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076774869] [2021-06-13 08:19:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:05,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:05,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:05,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:05,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:05,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:05,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:05,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:05,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:05,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:05,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:05,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:05,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:05,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:05,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:06,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:06,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:06,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:06,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:06,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:06,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076774869] [2021-06-13 08:19:06,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076774869] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:06,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:06,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:06,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119281259] [2021-06-13 08:19:06,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:06,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:06,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:06,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:06,020 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:06,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 641 transitions, 16455 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) [2021-06-13 08:19:06,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:06,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:06,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:07,029 INFO L129 PetriNetUnfolder]: 1201/2853 cut-off events. [2021-06-13 08:19:07,029 INFO L130 PetriNetUnfolder]: For 126964/126964 co-relation queries the response was YES. [2021-06-13 08:19:07,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31378 conditions, 2853 events. 1201/2853 cut-off events. For 126964/126964 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 24614 event pairs, 123 based on Foata normal form. 1/2854 useless extension candidates. Maximal degree in co-relation 31103. Up to 1623 conditions per place. [2021-06-13 08:19:07,077 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 558 selfloop transitions, 109 changer transitions 9/684 dead transitions. [2021-06-13 08:19:07,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 684 transitions, 18647 flow [2021-06-13 08:19:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:19:07,078 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:19:07,078 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:19:07,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:19:07,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:07,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:19:07,079 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) [2021-06-13 08:19:07,080 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) [2021-06-13 08:19:07,080 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) [2021-06-13 08:19:07,080 INFO L185 Difference]: Start difference. First operand has 467 places, 641 transitions, 16455 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:19:07,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 684 transitions, 18647 flow [2021-06-13 08:19:08,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 684 transitions, 18269 flow, removed 156 selfloop flow, removed 3 redundant places. [2021-06-13 08:19:08,077 INFO L241 Difference]: Finished difference. Result has 474 places, 647 transitions, 16887 flow [2021-06-13 08:19:08,078 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16085, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16887, PETRI_PLACES=474, PETRI_TRANSITIONS=647} [2021-06-13 08:19:08,078 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 435 predicate places. [2021-06-13 08:19:08,078 INFO L482 AbstractCegarLoop]: Abstraction has has 474 places, 647 transitions, 16887 flow [2021-06-13 08:19:08,078 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) [2021-06-13 08:19:08,078 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:08,078 INFO L255 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] [2021-06-13 08:19:08,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-13 08:19:08,078 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash -224904628, now seen corresponding path program 50 times [2021-06-13 08:19:08,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:08,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543853605] [2021-06-13 08:19:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:08,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:08,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:08,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:08,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:08,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:08,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:08,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:08,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:08,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:08,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:08,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:08,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:08,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:08,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:08,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:08,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:08,153 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:08,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:08,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:08,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543853605] [2021-06-13 08:19:08,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543853605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:08,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:08,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:19:08,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126362582] [2021-06-13 08:19:08,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:19:08,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:08,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:19:08,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:19:08,157 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:08,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 647 transitions, 16887 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) [2021-06-13 08:19:08,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:08,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:08,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:09,084 INFO L129 PetriNetUnfolder]: 1191/2835 cut-off events. [2021-06-13 08:19:09,084 INFO L130 PetriNetUnfolder]: For 127962/127962 co-relation queries the response was YES. [2021-06-13 08:19:09,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31552 conditions, 2835 events. 1191/2835 cut-off events. For 127962/127962 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 24424 event pairs, 129 based on Foata normal form. 1/2836 useless extension candidates. Maximal degree in co-relation 31274. Up to 1567 conditions per place. [2021-06-13 08:19:09,138 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 519 selfloop transitions, 142 changer transitions 19/688 dead transitions. [2021-06-13 08:19:09,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 688 transitions, 19251 flow [2021-06-13 08:19:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:19:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:19:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-06-13 08:19:09,139 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:19:09,139 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-06-13 08:19:09,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-06-13 08:19:09,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:09,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-06-13 08:19:09,139 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) [2021-06-13 08:19:09,140 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) [2021-06-13 08:19:09,140 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) [2021-06-13 08:19:09,140 INFO L185 Difference]: Start difference. First operand has 474 places, 647 transitions, 16887 flow. Second operand 10 states and 330 transitions. [2021-06-13 08:19:09,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 688 transitions, 19251 flow [2021-06-13 08:19:10,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 688 transitions, 18852 flow, removed 185 selfloop flow, removed 1 redundant places. [2021-06-13 08:19:10,244 INFO L241 Difference]: Finished difference. Result has 489 places, 640 transitions, 17026 flow [2021-06-13 08:19:10,245 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16488, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17026, PETRI_PLACES=489, PETRI_TRANSITIONS=640} [2021-06-13 08:19:10,245 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 450 predicate places. [2021-06-13 08:19:10,245 INFO L482 AbstractCegarLoop]: Abstraction has has 489 places, 640 transitions, 17026 flow [2021-06-13 08:19:10,245 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) [2021-06-13 08:19:10,245 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:10,245 INFO L255 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] [2021-06-13 08:19:10,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-13 08:19:10,245 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:10,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:10,246 INFO L82 PathProgramCache]: Analyzing trace with hash -605581328, now seen corresponding path program 51 times [2021-06-13 08:19:10,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:10,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496856629] [2021-06-13 08:19:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:10,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:10,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:10,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:10,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:10,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:10,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:10,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:10,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:10,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:10,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:10,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:10,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:10,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:10,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:10,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:10,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:10,321 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:10,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:10,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:10,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496856629] [2021-06-13 08:19:10,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496856629] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:10,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:10,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:19:10,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583550028] [2021-06-13 08:19:10,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:19:10,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:10,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:19:10,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:19:10,325 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:10,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 640 transitions, 17026 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) [2021-06-13 08:19:10,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:10,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:10,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:11,452 INFO L129 PetriNetUnfolder]: 1178/2793 cut-off events. [2021-06-13 08:19:11,453 INFO L130 PetriNetUnfolder]: For 134467/134467 co-relation queries the response was YES. [2021-06-13 08:19:11,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31875 conditions, 2793 events. 1178/2793 cut-off events. For 134467/134467 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 23926 event pairs, 149 based on Foata normal form. 1/2794 useless extension candidates. Maximal degree in co-relation 31588. Up to 1362 conditions per place. [2021-06-13 08:19:11,505 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 511 selfloop transitions, 147 changer transitions 14/680 dead transitions. [2021-06-13 08:19:11,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 680 transitions, 19122 flow [2021-06-13 08:19:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:19:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:19:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 333 transitions. [2021-06-13 08:19:11,506 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2021-06-13 08:19:11,506 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 333 transitions. [2021-06-13 08:19:11,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 333 transitions. [2021-06-13 08:19:11,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:11,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 333 transitions. [2021-06-13 08:19:11,507 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) [2021-06-13 08:19:11,507 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) [2021-06-13 08:19:11,507 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) [2021-06-13 08:19:11,507 INFO L185 Difference]: Start difference. First operand has 489 places, 640 transitions, 17026 flow. Second operand 10 states and 333 transitions. [2021-06-13 08:19:11,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 680 transitions, 19122 flow [2021-06-13 08:19:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 680 transitions, 18673 flow, removed 101 selfloop flow, removed 11 redundant places. [2021-06-13 08:19:12,576 INFO L241 Difference]: Finished difference. Result has 494 places, 634 transitions, 16987 flow [2021-06-13 08:19:12,576 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16589, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16987, PETRI_PLACES=494, PETRI_TRANSITIONS=634} [2021-06-13 08:19:12,576 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 455 predicate places. [2021-06-13 08:19:12,576 INFO L482 AbstractCegarLoop]: Abstraction has has 494 places, 634 transitions, 16987 flow [2021-06-13 08:19:12,577 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) [2021-06-13 08:19:12,577 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:12,577 INFO L255 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] [2021-06-13 08:19:12,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-13 08:19:12,577 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:12,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:12,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2042161642, now seen corresponding path program 52 times [2021-06-13 08:19:12,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:12,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622858049] [2021-06-13 08:19:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:12,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:12,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:12,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:12,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:12,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:12,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:12,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:12,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:12,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:12,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:12,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:12,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:12,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:12,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:12,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:12,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:12,635 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:12,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:12,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:12,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622858049] [2021-06-13 08:19:12,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622858049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:12,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:12,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 08:19:12,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702436470] [2021-06-13 08:19:12,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 08:19:12,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:12,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 08:19:12,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 08:19:12,639 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:12,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 634 transitions, 16987 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) [2021-06-13 08:19:12,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:12,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:12,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:13,468 INFO L129 PetriNetUnfolder]: 1177/2798 cut-off events. [2021-06-13 08:19:13,468 INFO L130 PetriNetUnfolder]: For 130840/130840 co-relation queries the response was YES. [2021-06-13 08:19:13,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32289 conditions, 2798 events. 1177/2798 cut-off events. For 130840/130840 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 24077 event pairs, 98 based on Foata normal form. 1/2799 useless extension candidates. Maximal degree in co-relation 32000. Up to 1861 conditions per place. [2021-06-13 08:19:13,528 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 605 selfloop transitions, 49 changer transitions 6/668 dead transitions. [2021-06-13 08:19:13,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 668 transitions, 19019 flow [2021-06-13 08:19:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 08:19:13,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 08:19:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2021-06-13 08:19:13,529 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7662337662337663 [2021-06-13 08:19:13,529 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 236 transitions. [2021-06-13 08:19:13,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 236 transitions. [2021-06-13 08:19:13,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:13,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 236 transitions. [2021-06-13 08:19:13,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.714285714285715) internal successors, (236), 7 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:19:13,530 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) [2021-06-13 08:19:13,530 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) [2021-06-13 08:19:13,530 INFO L185 Difference]: Start difference. First operand has 494 places, 634 transitions, 16987 flow. Second operand 7 states and 236 transitions. [2021-06-13 08:19:13,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 668 transitions, 19019 flow [2021-06-13 08:19:14,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 668 transitions, 18443 flow, removed 16 selfloop flow, removed 19 redundant places. [2021-06-13 08:19:14,570 INFO L241 Difference]: Finished difference. Result has 486 places, 640 transitions, 16857 flow [2021-06-13 08:19:14,570 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16427, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16857, PETRI_PLACES=486, PETRI_TRANSITIONS=640} [2021-06-13 08:19:14,570 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 447 predicate places. [2021-06-13 08:19:14,570 INFO L482 AbstractCegarLoop]: Abstraction has has 486 places, 640 transitions, 16857 flow [2021-06-13 08:19:14,570 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) [2021-06-13 08:19:14,570 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:14,571 INFO L255 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] [2021-06-13 08:19:14,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-13 08:19:14,571 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:14,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:14,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1107067528, now seen corresponding path program 53 times [2021-06-13 08:19:14,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:14,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078633523] [2021-06-13 08:19:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:14,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:14,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:14,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:14,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:14,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:14,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:14,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:14,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:14,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:14,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:14,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:14,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:14,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:14,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:14,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:14,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:14,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:14,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:14,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:14,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:14,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078633523] [2021-06-13 08:19:14,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078633523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:14,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:14,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:19:14,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897254963] [2021-06-13 08:19:14,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:19:14,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:14,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:19:14,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:19:14,626 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:14,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 640 transitions, 16857 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) [2021-06-13 08:19:14,626 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:14,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:14,626 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:15,443 INFO L129 PetriNetUnfolder]: 1175/2790 cut-off events. [2021-06-13 08:19:15,443 INFO L130 PetriNetUnfolder]: For 126131/126131 co-relation queries the response was YES. [2021-06-13 08:19:15,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31600 conditions, 2790 events. 1175/2790 cut-off events. For 126131/126131 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 23956 event pairs, 111 based on Foata normal form. 1/2791 useless extension candidates. Maximal degree in co-relation 31314. Up to 1722 conditions per place. [2021-06-13 08:19:15,492 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 570 selfloop transitions, 88 changer transitions 9/675 dead transitions. [2021-06-13 08:19:15,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 675 transitions, 18851 flow [2021-06-13 08:19:15,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:19:15,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:19:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-06-13 08:19:15,493 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-06-13 08:19:15,493 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-06-13 08:19:15,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-06-13 08:19:15,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:15,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-06-13 08:19:15,494 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) [2021-06-13 08:19:15,494 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) [2021-06-13 08:19:15,496 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) [2021-06-13 08:19:15,496 INFO L185 Difference]: Start difference. First operand has 486 places, 640 transitions, 16857 flow. Second operand 8 states and 268 transitions. [2021-06-13 08:19:15,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 675 transitions, 18851 flow [2021-06-13 08:19:16,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 675 transitions, 18722 flow, removed 61 selfloop flow, removed 1 redundant places. [2021-06-13 08:19:16,598 INFO L241 Difference]: Finished difference. Result has 497 places, 641 transitions, 17146 flow [2021-06-13 08:19:16,599 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16730, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17146, PETRI_PLACES=497, PETRI_TRANSITIONS=641} [2021-06-13 08:19:16,599 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 458 predicate places. [2021-06-13 08:19:16,599 INFO L482 AbstractCegarLoop]: Abstraction has has 497 places, 641 transitions, 17146 flow [2021-06-13 08:19:16,599 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) [2021-06-13 08:19:16,599 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:16,599 INFO L255 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] [2021-06-13 08:19:16,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-13 08:19:16,599 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:16,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1712908234, now seen corresponding path program 54 times [2021-06-13 08:19:16,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:16,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886667461] [2021-06-13 08:19:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:16,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:16,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:16,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:16,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:16,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:16,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:16,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:16,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:16,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:16,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:16,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:16,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:16,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:16,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:16,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:16,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:16,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:16,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:16,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:16,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886667461] [2021-06-13 08:19:16,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886667461] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:16,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:16,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:19:16,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100650909] [2021-06-13 08:19:16,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:19:16,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:16,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:19:16,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:19:16,659 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:16,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 641 transitions, 17146 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) [2021-06-13 08:19:16,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:16,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:16,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:17,543 INFO L129 PetriNetUnfolder]: 1170/2784 cut-off events. [2021-06-13 08:19:17,543 INFO L130 PetriNetUnfolder]: For 130858/130858 co-relation queries the response was YES. [2021-06-13 08:19:17,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32068 conditions, 2784 events. 1170/2784 cut-off events. For 130858/130858 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 23937 event pairs, 114 based on Foata normal form. 1/2785 useless extension candidates. Maximal degree in co-relation 31774. Up to 1725 conditions per place. [2021-06-13 08:19:17,602 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 572 selfloop transitions, 81 changer transitions 10/671 dead transitions. [2021-06-13 08:19:17,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 671 transitions, 18972 flow [2021-06-13 08:19:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:19:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:19:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-06-13 08:19:17,603 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-06-13 08:19:17,603 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-06-13 08:19:17,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-06-13 08:19:17,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:17,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-06-13 08:19:17,604 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) [2021-06-13 08:19:17,604 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) [2021-06-13 08:19:17,604 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) [2021-06-13 08:19:17,604 INFO L185 Difference]: Start difference. First operand has 497 places, 641 transitions, 17146 flow. Second operand 8 states and 268 transitions. [2021-06-13 08:19:17,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 671 transitions, 18972 flow [2021-06-13 08:19:18,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 671 transitions, 18774 flow, removed 66 selfloop flow, removed 4 redundant places. [2021-06-13 08:19:18,684 INFO L241 Difference]: Finished difference. Result has 505 places, 636 transitions, 17097 flow [2021-06-13 08:19:18,684 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16956, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17097, PETRI_PLACES=505, PETRI_TRANSITIONS=636} [2021-06-13 08:19:18,685 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 466 predicate places. [2021-06-13 08:19:18,685 INFO L482 AbstractCegarLoop]: Abstraction has has 505 places, 636 transitions, 17097 flow [2021-06-13 08:19:18,685 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) [2021-06-13 08:19:18,685 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:18,685 INFO L255 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] [2021-06-13 08:19:18,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-13 08:19:18,685 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:18,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1463546770, now seen corresponding path program 55 times [2021-06-13 08:19:18,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:18,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763472338] [2021-06-13 08:19:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:18,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:18,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:18,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:18,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:18,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:18,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:18,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:18,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:18,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:18,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:18,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:18,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:18,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:18,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:18,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:18,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:18,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:18,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:18,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:18,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763472338] [2021-06-13 08:19:18,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763472338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:18,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:18,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:18,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5122105] [2021-06-13 08:19:18,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:18,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:18,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:18,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:18,765 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:18,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 636 transitions, 17097 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) [2021-06-13 08:19:18,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:18,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:18,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:19,822 INFO L129 PetriNetUnfolder]: 1163/2760 cut-off events. [2021-06-13 08:19:19,822 INFO L130 PetriNetUnfolder]: For 132394/132394 co-relation queries the response was YES. [2021-06-13 08:19:19,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32164 conditions, 2760 events. 1163/2760 cut-off events. For 132394/132394 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 23665 event pairs, 113 based on Foata normal form. 1/2761 useless extension candidates. Maximal degree in co-relation 31866. Up to 1648 conditions per place. [2021-06-13 08:19:19,876 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 542 selfloop transitions, 111 changer transitions 6/667 dead transitions. [2021-06-13 08:19:19,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 667 transitions, 18825 flow [2021-06-13 08:19:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:19,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-06-13 08:19:19,877 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-06-13 08:19:19,877 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-06-13 08:19:19,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-06-13 08:19:19,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:19,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-06-13 08:19:19,878 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) [2021-06-13 08:19:19,878 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) [2021-06-13 08:19:19,878 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) [2021-06-13 08:19:19,878 INFO L185 Difference]: Start difference. First operand has 505 places, 636 transitions, 17097 flow. Second operand 9 states and 299 transitions. [2021-06-13 08:19:19,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 667 transitions, 18825 flow [2021-06-13 08:19:21,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 667 transitions, 18598 flow, removed 33 selfloop flow, removed 8 redundant places. [2021-06-13 08:19:21,026 INFO L241 Difference]: Finished difference. Result has 509 places, 634 transitions, 17204 flow [2021-06-13 08:19:21,026 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16874, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17204, PETRI_PLACES=509, PETRI_TRANSITIONS=634} [2021-06-13 08:19:21,026 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 470 predicate places. [2021-06-13 08:19:21,026 INFO L482 AbstractCegarLoop]: Abstraction has has 509 places, 634 transitions, 17204 flow [2021-06-13 08:19:21,026 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) [2021-06-13 08:19:21,026 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:21,026 INFO L255 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] [2021-06-13 08:19:21,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-13 08:19:21,027 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:21,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1406988276, now seen corresponding path program 56 times [2021-06-13 08:19:21,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:21,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238625344] [2021-06-13 08:19:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:21,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:21,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:21,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:21,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:21,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:21,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:21,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:21,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:21,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:21,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:21,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:21,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:21,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:21,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:21,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:21,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:21,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:21,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:21,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:21,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238625344] [2021-06-13 08:19:21,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238625344] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:21,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:21,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:21,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965810161] [2021-06-13 08:19:21,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:21,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:21,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:21,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:21,108 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:21,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 634 transitions, 17204 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) [2021-06-13 08:19:21,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:21,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:21,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:22,007 INFO L129 PetriNetUnfolder]: 1161/2739 cut-off events. [2021-06-13 08:19:22,007 INFO L130 PetriNetUnfolder]: For 135116/135116 co-relation queries the response was YES. [2021-06-13 08:19:22,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32303 conditions, 2739 events. 1161/2739 cut-off events. For 135116/135116 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 23305 event pairs, 137 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 32006. Up to 1529 conditions per place. [2021-06-13 08:19:22,069 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 553 selfloop transitions, 100 changer transitions 11/672 dead transitions. [2021-06-13 08:19:22,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 672 transitions, 19142 flow [2021-06-13 08:19:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:22,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:19:22,070 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:19:22,070 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:19:22,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:19:22,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:22,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:19:22,070 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) [2021-06-13 08:19:22,070 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) [2021-06-13 08:19:22,071 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) [2021-06-13 08:19:22,071 INFO L185 Difference]: Start difference. First operand has 509 places, 634 transitions, 17204 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:19:22,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 672 transitions, 19142 flow [2021-06-13 08:19:23,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 672 transitions, 18742 flow, removed 43 selfloop flow, removed 13 redundant places. [2021-06-13 08:19:23,310 INFO L241 Difference]: Finished difference. Result has 509 places, 633 transitions, 17130 flow [2021-06-13 08:19:23,310 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16814, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17130, PETRI_PLACES=509, PETRI_TRANSITIONS=633} [2021-06-13 08:19:23,311 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 470 predicate places. [2021-06-13 08:19:23,311 INFO L482 AbstractCegarLoop]: Abstraction has has 509 places, 633 transitions, 17130 flow [2021-06-13 08:19:23,311 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) [2021-06-13 08:19:23,311 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:23,311 INFO L255 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] [2021-06-13 08:19:23,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-13 08:19:23,311 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:23,311 INFO L82 PathProgramCache]: Analyzing trace with hash -2050084844, now seen corresponding path program 57 times [2021-06-13 08:19:23,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:23,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966334067] [2021-06-13 08:19:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:23,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:23,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:23,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:23,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:23,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:23,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:23,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:23,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:23,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:23,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:23,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:23,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:23,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:23,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:23,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:23,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:23,385 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:23,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:23,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:23,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966334067] [2021-06-13 08:19:23,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966334067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:23,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:23,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:23,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506268629] [2021-06-13 08:19:23,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:23,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:23,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:23,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:23,389 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:23,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 633 transitions, 17130 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) [2021-06-13 08:19:23,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:23,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:23,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:24,280 INFO L129 PetriNetUnfolder]: 1157/2732 cut-off events. [2021-06-13 08:19:24,280 INFO L130 PetriNetUnfolder]: For 132208/132208 co-relation queries the response was YES. [2021-06-13 08:19:24,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32260 conditions, 2732 events. 1157/2732 cut-off events. For 132208/132208 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 23215 event pairs, 111 based on Foata normal form. 1/2733 useless extension candidates. Maximal degree in co-relation 31962. Up to 1644 conditions per place. [2021-06-13 08:19:24,335 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 526 selfloop transitions, 127 changer transitions 6/667 dead transitions. [2021-06-13 08:19:24,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 667 transitions, 18965 flow [2021-06-13 08:19:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:19:24,336 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:19:24,336 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:19:24,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:19:24,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:24,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:19:24,337 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) [2021-06-13 08:19:24,337 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) [2021-06-13 08:19:24,337 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) [2021-06-13 08:19:24,337 INFO L185 Difference]: Start difference. First operand has 509 places, 633 transitions, 17130 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:19:24,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 667 transitions, 18965 flow [2021-06-13 08:19:25,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 667 transitions, 18656 flow, removed 17 selfloop flow, removed 10 redundant places. [2021-06-13 08:19:25,416 INFO L241 Difference]: Finished difference. Result has 512 places, 635 transitions, 17380 flow [2021-06-13 08:19:25,416 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16839, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17380, PETRI_PLACES=512, PETRI_TRANSITIONS=635} [2021-06-13 08:19:25,416 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 473 predicate places. [2021-06-13 08:19:25,416 INFO L482 AbstractCegarLoop]: Abstraction has has 512 places, 635 transitions, 17380 flow [2021-06-13 08:19:25,417 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) [2021-06-13 08:19:25,417 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:25,417 INFO L255 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] [2021-06-13 08:19:25,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-13 08:19:25,417 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:25,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:25,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1486669052, now seen corresponding path program 58 times [2021-06-13 08:19:25,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:25,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319390690] [2021-06-13 08:19:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:25,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:25,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:25,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:25,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:25,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:25,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:25,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:25,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:25,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:25,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:25,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:25,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:25,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:25,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:25,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:25,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:25,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:25,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:25,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:25,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319390690] [2021-06-13 08:19:25,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319390690] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:25,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:25,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:25,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488295787] [2021-06-13 08:19:25,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:25,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:25,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:25,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:25,490 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:25,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 635 transitions, 17380 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) [2021-06-13 08:19:25,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:25,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:25,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:26,571 INFO L129 PetriNetUnfolder]: 1156/2734 cut-off events. [2021-06-13 08:19:26,571 INFO L130 PetriNetUnfolder]: For 130360/130360 co-relation queries the response was YES. [2021-06-13 08:19:26,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32232 conditions, 2734 events. 1156/2734 cut-off events. For 130360/130360 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 23287 event pairs, 97 based on Foata normal form. 1/2735 useless extension candidates. Maximal degree in co-relation 31933. Up to 1792 conditions per place. [2021-06-13 08:19:26,619 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 578 selfloop transitions, 71 changer transitions 9/666 dead transitions. [2021-06-13 08:19:26,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 666 transitions, 19149 flow [2021-06-13 08:19:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-06-13 08:19:26,620 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:19:26,620 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-06-13 08:19:26,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-06-13 08:19:26,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:26,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-06-13 08:19:26,621 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) [2021-06-13 08:19:26,621 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) [2021-06-13 08:19:26,621 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) [2021-06-13 08:19:26,621 INFO L185 Difference]: Start difference. First operand has 512 places, 635 transitions, 17380 flow. Second operand 9 states and 297 transitions. [2021-06-13 08:19:26,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 666 transitions, 19149 flow [2021-06-13 08:19:27,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 666 transitions, 18912 flow, removed 32 selfloop flow, removed 6 redundant places. [2021-06-13 08:19:27,725 INFO L241 Difference]: Finished difference. Result has 519 places, 632 transitions, 17288 flow [2021-06-13 08:19:27,726 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17145, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17288, PETRI_PLACES=519, PETRI_TRANSITIONS=632} [2021-06-13 08:19:27,726 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 480 predicate places. [2021-06-13 08:19:27,726 INFO L482 AbstractCegarLoop]: Abstraction has has 519 places, 632 transitions, 17288 flow [2021-06-13 08:19:27,726 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) [2021-06-13 08:19:27,726 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:27,726 INFO L255 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] [2021-06-13 08:19:27,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-13 08:19:27,726 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:27,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:27,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1456197290, now seen corresponding path program 59 times [2021-06-13 08:19:27,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:27,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783006215] [2021-06-13 08:19:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:27,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:27,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:27,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:27,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:27,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:27,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:27,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:27,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:27,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:27,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:27,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:27,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:27,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:27,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:27,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:27,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:27,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:27,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:27,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:27,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783006215] [2021-06-13 08:19:27,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783006215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:27,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:27,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:19:27,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457385979] [2021-06-13 08:19:27,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:19:27,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:27,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:19:27,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:19:27,803 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:27,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 632 transitions, 17288 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) [2021-06-13 08:19:27,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:27,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:27,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:28,713 INFO L129 PetriNetUnfolder]: 1146/2684 cut-off events. [2021-06-13 08:19:28,713 INFO L130 PetriNetUnfolder]: For 136968/136968 co-relation queries the response was YES. [2021-06-13 08:19:28,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31975 conditions, 2684 events. 1146/2684 cut-off events. For 136968/136968 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 22645 event pairs, 138 based on Foata normal form. 1/2685 useless extension candidates. Maximal degree in co-relation 31672. Up to 1451 conditions per place. [2021-06-13 08:19:28,773 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 518 selfloop transitions, 130 changer transitions 11/667 dead transitions. [2021-06-13 08:19:28,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 667 transitions, 19122 flow [2021-06-13 08:19:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:19:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:19:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-06-13 08:19:28,774 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-06-13 08:19:28,774 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-06-13 08:19:28,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-06-13 08:19:28,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:28,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-06-13 08:19:28,775 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) [2021-06-13 08:19:28,775 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) [2021-06-13 08:19:28,775 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) [2021-06-13 08:19:28,775 INFO L185 Difference]: Start difference. First operand has 519 places, 632 transitions, 17288 flow. Second operand 10 states and 331 transitions. [2021-06-13 08:19:28,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 667 transitions, 19122 flow [2021-06-13 08:19:29,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 667 transitions, 18816 flow, removed 40 selfloop flow, removed 10 redundant places. [2021-06-13 08:19:29,938 INFO L241 Difference]: Finished difference. Result has 523 places, 626 transitions, 17264 flow [2021-06-13 08:19:29,938 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16990, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17264, PETRI_PLACES=523, PETRI_TRANSITIONS=626} [2021-06-13 08:19:29,939 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 484 predicate places. [2021-06-13 08:19:29,939 INFO L482 AbstractCegarLoop]: Abstraction has has 523 places, 626 transitions, 17264 flow [2021-06-13 08:19:29,939 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) [2021-06-13 08:19:29,939 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:29,939 INFO L255 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] [2021-06-13 08:19:29,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-13 08:19:29,939 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:29,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:29,939 INFO L82 PathProgramCache]: Analyzing trace with hash 572294552, now seen corresponding path program 60 times [2021-06-13 08:19:29,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:29,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583204076] [2021-06-13 08:19:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:29,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:29,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:29,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:29,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:29,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:29,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:29,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:29,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:29,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:29,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:29,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:29,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:30,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:30,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:30,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:30,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:30,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:30,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:30,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:30,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583204076] [2021-06-13 08:19:30,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583204076] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:30,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:30,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:30,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511480147] [2021-06-13 08:19:30,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:30,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:30,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:30,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:30,023 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:30,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 626 transitions, 17264 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) [2021-06-13 08:19:30,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:30,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:30,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:30,911 INFO L129 PetriNetUnfolder]: 1142/2682 cut-off events. [2021-06-13 08:19:30,911 INFO L130 PetriNetUnfolder]: For 139448/139448 co-relation queries the response was YES. [2021-06-13 08:19:30,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32274 conditions, 2682 events. 1142/2682 cut-off events. For 139448/139448 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 22697 event pairs, 122 based on Foata normal form. 1/2683 useless extension candidates. Maximal degree in co-relation 31970. Up to 1596 conditions per place. [2021-06-13 08:19:30,967 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 543 selfloop transitions, 101 changer transitions 8/660 dead transitions. [2021-06-13 08:19:30,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 660 transitions, 19264 flow [2021-06-13 08:19:30,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-06-13 08:19:30,968 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-06-13 08:19:30,968 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-06-13 08:19:30,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-06-13 08:19:30,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:30,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-06-13 08:19:30,969 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) [2021-06-13 08:19:30,969 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) [2021-06-13 08:19:30,969 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) [2021-06-13 08:19:30,969 INFO L185 Difference]: Start difference. First operand has 523 places, 626 transitions, 17264 flow. Second operand 9 states and 299 transitions. [2021-06-13 08:19:30,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 660 transitions, 19264 flow [2021-06-13 08:19:32,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 660 transitions, 18775 flow, removed 23 selfloop flow, removed 19 redundant places. [2021-06-13 08:19:32,042 INFO L241 Difference]: Finished difference. Result has 518 places, 625 transitions, 17199 flow [2021-06-13 08:19:32,043 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16801, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17199, PETRI_PLACES=518, PETRI_TRANSITIONS=625} [2021-06-13 08:19:32,043 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 479 predicate places. [2021-06-13 08:19:32,043 INFO L482 AbstractCegarLoop]: Abstraction has has 518 places, 625 transitions, 17199 flow [2021-06-13 08:19:32,043 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) [2021-06-13 08:19:32,043 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:32,043 INFO L255 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] [2021-06-13 08:19:32,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-13 08:19:32,043 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:32,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:32,044 INFO L82 PathProgramCache]: Analyzing trace with hash -142548384, now seen corresponding path program 61 times [2021-06-13 08:19:32,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:32,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391519778] [2021-06-13 08:19:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:32,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:32,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:32,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:32,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:32,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:32,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:32,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:32,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:32,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:32,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:32,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:32,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:32,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:32,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:32,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:32,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:32,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:32,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:32,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:32,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391519778] [2021-06-13 08:19:32,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391519778] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:32,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:32,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:19:32,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773309462] [2021-06-13 08:19:32,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:19:32,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:32,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:19:32,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:19:32,119 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:32,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 625 transitions, 17199 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) [2021-06-13 08:19:32,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:32,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:32,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:33,032 INFO L129 PetriNetUnfolder]: 1140/2675 cut-off events. [2021-06-13 08:19:33,033 INFO L130 PetriNetUnfolder]: For 138714/138714 co-relation queries the response was YES. [2021-06-13 08:19:33,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32043 conditions, 2675 events. 1140/2675 cut-off events. For 138714/138714 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 22608 event pairs, 126 based on Foata normal form. 1/2676 useless extension candidates. Maximal degree in co-relation 31741. Up to 1547 conditions per place. [2021-06-13 08:19:33,086 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 508 selfloop transitions, 136 changer transitions 8/660 dead transitions. [2021-06-13 08:19:33,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 660 transitions, 19201 flow [2021-06-13 08:19:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:19:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:19:33,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-06-13 08:19:33,087 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-06-13 08:19:33,087 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-06-13 08:19:33,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-06-13 08:19:33,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:33,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-06-13 08:19:33,088 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) [2021-06-13 08:19:33,088 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) [2021-06-13 08:19:33,088 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) [2021-06-13 08:19:33,088 INFO L185 Difference]: Start difference. First operand has 518 places, 625 transitions, 17199 flow. Second operand 10 states and 329 transitions. [2021-06-13 08:19:33,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 660 transitions, 19201 flow [2021-06-13 08:19:34,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 660 transitions, 18777 flow, removed 43 selfloop flow, removed 13 redundant places. [2021-06-13 08:19:34,138 INFO L241 Difference]: Finished difference. Result has 520 places, 624 transitions, 17295 flow [2021-06-13 08:19:34,138 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16791, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17295, PETRI_PLACES=520, PETRI_TRANSITIONS=624} [2021-06-13 08:19:34,138 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 481 predicate places. [2021-06-13 08:19:34,138 INFO L482 AbstractCegarLoop]: Abstraction has has 520 places, 624 transitions, 17295 flow [2021-06-13 08:19:34,138 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) [2021-06-13 08:19:34,138 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:34,139 INFO L255 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] [2021-06-13 08:19:34,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-13 08:19:34,139 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:34,139 INFO L82 PathProgramCache]: Analyzing trace with hash -37829740, now seen corresponding path program 62 times [2021-06-13 08:19:34,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:34,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619939041] [2021-06-13 08:19:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:34,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:34,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:34,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:34,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:34,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:34,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:34,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:34,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:34,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:34,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:34,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:34,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:34,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:34,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:34,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:34,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:34,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:34,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:34,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:34,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619939041] [2021-06-13 08:19:34,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619939041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:34,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:34,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:34,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927900688] [2021-06-13 08:19:34,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:34,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:34,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:34,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:34,204 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:34,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 624 transitions, 17295 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) [2021-06-13 08:19:34,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:34,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:34,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:35,272 INFO L129 PetriNetUnfolder]: 1138/2673 cut-off events. [2021-06-13 08:19:35,272 INFO L130 PetriNetUnfolder]: For 143153/143153 co-relation queries the response was YES. [2021-06-13 08:19:35,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32170 conditions, 2673 events. 1138/2673 cut-off events. For 143153/143153 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 22588 event pairs, 146 based on Foata normal form. 1/2674 useless extension candidates. Maximal degree in co-relation 31867. Up to 1457 conditions per place. [2021-06-13 08:19:35,328 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 525 selfloop transitions, 109 changer transitions 19/661 dead transitions. [2021-06-13 08:19:35,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 661 transitions, 19395 flow [2021-06-13 08:19:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:35,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-06-13 08:19:35,329 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-06-13 08:19:35,329 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-06-13 08:19:35,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-06-13 08:19:35,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:35,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-06-13 08:19:35,330 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) [2021-06-13 08:19:35,330 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) [2021-06-13 08:19:35,330 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) [2021-06-13 08:19:35,330 INFO L185 Difference]: Start difference. First operand has 520 places, 624 transitions, 17295 flow. Second operand 9 states and 301 transitions. [2021-06-13 08:19:35,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 661 transitions, 19395 flow [2021-06-13 08:19:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 661 transitions, 19018 flow, removed 53 selfloop flow, removed 9 redundant places. [2021-06-13 08:19:36,494 INFO L241 Difference]: Finished difference. Result has 526 places, 613 transitions, 17026 flow [2021-06-13 08:19:36,494 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16944, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17026, PETRI_PLACES=526, PETRI_TRANSITIONS=613} [2021-06-13 08:19:36,494 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 487 predicate places. [2021-06-13 08:19:36,494 INFO L482 AbstractCegarLoop]: Abstraction has has 526 places, 613 transitions, 17026 flow [2021-06-13 08:19:36,495 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) [2021-06-13 08:19:36,495 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:36,495 INFO L255 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] [2021-06-13 08:19:36,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-13 08:19:36,495 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:36,495 INFO L82 PathProgramCache]: Analyzing trace with hash 211405800, now seen corresponding path program 63 times [2021-06-13 08:19:36,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:36,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241945837] [2021-06-13 08:19:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:36,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:36,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:36,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:36,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:36,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:36,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:36,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:36,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:36,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:36,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:36,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:36,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:36,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:36,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:36,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:36,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:36,577 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:36,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:36,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:36,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241945837] [2021-06-13 08:19:36,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241945837] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:36,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:36,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:19:36,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363278144] [2021-06-13 08:19:36,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:19:36,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:36,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:19:36,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:19:36,580 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:36,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 613 transitions, 17026 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) [2021-06-13 08:19:36,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:36,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:36,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:37,506 INFO L129 PetriNetUnfolder]: 1121/2634 cut-off events. [2021-06-13 08:19:37,506 INFO L130 PetriNetUnfolder]: For 141268/141268 co-relation queries the response was YES. [2021-06-13 08:19:37,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31901 conditions, 2634 events. 1121/2634 cut-off events. For 141268/141268 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 22190 event pairs, 145 based on Foata normal form. 1/2635 useless extension candidates. Maximal degree in co-relation 31595. Up to 1368 conditions per place. [2021-06-13 08:19:37,568 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 491 selfloop transitions, 140 changer transitions 10/649 dead transitions. [2021-06-13 08:19:37,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 649 transitions, 18832 flow [2021-06-13 08:19:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:19:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:19:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 332 transitions. [2021-06-13 08:19:37,569 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7545454545454545 [2021-06-13 08:19:37,570 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 332 transitions. [2021-06-13 08:19:37,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 332 transitions. [2021-06-13 08:19:37,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:37,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 332 transitions. [2021-06-13 08:19:37,570 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) [2021-06-13 08:19:37,570 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) [2021-06-13 08:19:37,570 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) [2021-06-13 08:19:37,571 INFO L185 Difference]: Start difference. First operand has 526 places, 613 transitions, 17026 flow. Second operand 10 states and 332 transitions. [2021-06-13 08:19:37,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 649 transitions, 18832 flow [2021-06-13 08:19:38,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 649 transitions, 18521 flow, removed 4 selfloop flow, removed 12 redundant places. [2021-06-13 08:19:38,795 INFO L241 Difference]: Finished difference. Result has 528 places, 608 transitions, 17011 flow [2021-06-13 08:19:38,796 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16717, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17011, PETRI_PLACES=528, PETRI_TRANSITIONS=608} [2021-06-13 08:19:38,796 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 489 predicate places. [2021-06-13 08:19:38,796 INFO L482 AbstractCegarLoop]: Abstraction has has 528 places, 608 transitions, 17011 flow [2021-06-13 08:19:38,796 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) [2021-06-13 08:19:38,796 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:38,796 INFO L255 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] [2021-06-13 08:19:38,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-13 08:19:38,796 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:38,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1822563600, now seen corresponding path program 64 times [2021-06-13 08:19:38,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:38,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136070408] [2021-06-13 08:19:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:38,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:38,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:38,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:38,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:38,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:38,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:38,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:38,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:38,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:38,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:38,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:38,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:38,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:38,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:38,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:38,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:38,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:38,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:38,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:38,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:38,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136070408] [2021-06-13 08:19:38,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136070408] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:38,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:38,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:38,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469386834] [2021-06-13 08:19:38,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:38,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:38,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:38,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:38,867 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:38,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 608 transitions, 17011 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) [2021-06-13 08:19:38,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:38,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:38,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:39,731 INFO L129 PetriNetUnfolder]: 1122/2628 cut-off events. [2021-06-13 08:19:39,732 INFO L130 PetriNetUnfolder]: For 147568/147568 co-relation queries the response was YES. [2021-06-13 08:19:39,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32192 conditions, 2628 events. 1122/2628 cut-off events. For 147568/147568 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 22053 event pairs, 146 based on Foata normal form. 1/2629 useless extension candidates. Maximal degree in co-relation 31885. Up to 1445 conditions per place. [2021-06-13 08:19:39,789 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 527 selfloop transitions, 103 changer transitions 12/650 dead transitions. [2021-06-13 08:19:39,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 650 transitions, 19167 flow [2021-06-13 08:19:39,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:39,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-06-13 08:19:39,790 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-06-13 08:19:39,790 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-06-13 08:19:39,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-06-13 08:19:39,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:39,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-06-13 08:19:39,791 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) [2021-06-13 08:19:39,791 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) [2021-06-13 08:19:39,791 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) [2021-06-13 08:19:39,791 INFO L185 Difference]: Start difference. First operand has 528 places, 608 transitions, 17011 flow. Second operand 9 states and 301 transitions. [2021-06-13 08:19:39,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 650 transitions, 19167 flow [2021-06-13 08:19:40,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 650 transitions, 18491 flow, removed 28 selfloop flow, removed 23 redundant places. [2021-06-13 08:19:40,936 INFO L241 Difference]: Finished difference. Result has 520 places, 609 transitions, 16852 flow [2021-06-13 08:19:40,937 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16386, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16852, PETRI_PLACES=520, PETRI_TRANSITIONS=609} [2021-06-13 08:19:40,937 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 481 predicate places. [2021-06-13 08:19:40,937 INFO L482 AbstractCegarLoop]: Abstraction has has 520 places, 609 transitions, 16852 flow [2021-06-13 08:19:40,937 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) [2021-06-13 08:19:40,937 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:40,937 INFO L255 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] [2021-06-13 08:19:40,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-13 08:19:40,938 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:40,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2086494886, now seen corresponding path program 65 times [2021-06-13 08:19:40,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:40,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406467765] [2021-06-13 08:19:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:40,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:40,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:40,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:40,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:40,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:40,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:40,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:40,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:40,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:40,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:40,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:40,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:40,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:40,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:41,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:41,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:41,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:41,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:41,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:41,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406467765] [2021-06-13 08:19:41,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406467765] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:41,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:41,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:19:41,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994085438] [2021-06-13 08:19:41,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:19:41,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:41,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:19:41,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:19:41,018 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:41,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 609 transitions, 16852 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) [2021-06-13 08:19:41,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:41,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:41,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:41,943 INFO L129 PetriNetUnfolder]: 1115/2612 cut-off events. [2021-06-13 08:19:41,943 INFO L130 PetriNetUnfolder]: For 142208/142208 co-relation queries the response was YES. [2021-06-13 08:19:41,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31677 conditions, 2612 events. 1115/2612 cut-off events. For 142208/142208 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 21910 event pairs, 146 based on Foata normal form. 1/2613 useless extension candidates. Maximal degree in co-relation 31373. Up to 1402 conditions per place. [2021-06-13 08:19:42,005 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 496 selfloop transitions, 131 changer transitions 9/644 dead transitions. [2021-06-13 08:19:42,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 644 transitions, 18664 flow [2021-06-13 08:19:42,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:19:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:19:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-06-13 08:19:42,006 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-06-13 08:19:42,006 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-06-13 08:19:42,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-06-13 08:19:42,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:42,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-06-13 08:19:42,007 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) [2021-06-13 08:19:42,007 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) [2021-06-13 08:19:42,007 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) [2021-06-13 08:19:42,007 INFO L185 Difference]: Start difference. First operand has 520 places, 609 transitions, 16852 flow. Second operand 10 states and 331 transitions. [2021-06-13 08:19:42,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 644 transitions, 18664 flow [2021-06-13 08:19:43,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 644 transitions, 18433 flow, removed 34 selfloop flow, removed 6 redundant places. [2021-06-13 08:19:43,263 INFO L241 Difference]: Finished difference. Result has 528 places, 605 transitions, 16940 flow [2021-06-13 08:19:43,264 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16623, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16940, PETRI_PLACES=528, PETRI_TRANSITIONS=605} [2021-06-13 08:19:43,264 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 489 predicate places. [2021-06-13 08:19:43,264 INFO L482 AbstractCegarLoop]: Abstraction has has 528 places, 605 transitions, 16940 flow [2021-06-13 08:19:43,264 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) [2021-06-13 08:19:43,264 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:43,264 INFO L255 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] [2021-06-13 08:19:43,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-13 08:19:43,265 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:43,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:43,265 INFO L82 PathProgramCache]: Analyzing trace with hash -607574818, now seen corresponding path program 66 times [2021-06-13 08:19:43,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:43,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438882803] [2021-06-13 08:19:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:43,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:43,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:43,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:43,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:43,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:43,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:43,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:43,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:43,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:43,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:43,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:43,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:43,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:43,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:43,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:43,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:43,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:43,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:43,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:43,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438882803] [2021-06-13 08:19:43,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438882803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:43,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:43,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:19:43,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914500234] [2021-06-13 08:19:43,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:19:43,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:43,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:19:43,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:19:43,341 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:43,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 605 transitions, 16940 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) [2021-06-13 08:19:43,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:43,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:43,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:44,306 INFO L129 PetriNetUnfolder]: 1112/2611 cut-off events. [2021-06-13 08:19:44,307 INFO L130 PetriNetUnfolder]: For 146600/146600 co-relation queries the response was YES. [2021-06-13 08:19:44,354 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32041 conditions, 2611 events. 1112/2611 cut-off events. For 146600/146600 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 21928 event pairs, 130 based on Foata normal form. 1/2612 useless extension candidates. Maximal degree in co-relation 31733. Up to 1565 conditions per place. [2021-06-13 08:19:44,366 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 537 selfloop transitions, 81 changer transitions 13/639 dead transitions. [2021-06-13 08:19:44,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 639 transitions, 18754 flow [2021-06-13 08:19:44,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:19:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:19:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-06-13 08:19:44,367 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:19:44,367 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-06-13 08:19:44,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-06-13 08:19:44,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:44,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-06-13 08:19:44,367 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) [2021-06-13 08:19:44,368 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) [2021-06-13 08:19:44,368 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) [2021-06-13 08:19:44,368 INFO L185 Difference]: Start difference. First operand has 528 places, 605 transitions, 16940 flow. Second operand 10 states and 330 transitions. [2021-06-13 08:19:44,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 639 transitions, 18754 flow [2021-06-13 08:19:45,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 639 transitions, 18282 flow, removed 18 selfloop flow, removed 16 redundant places. [2021-06-13 08:19:45,521 INFO L241 Difference]: Finished difference. Result has 526 places, 597 transitions, 16515 flow [2021-06-13 08:19:45,521 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16490, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16515, PETRI_PLACES=526, PETRI_TRANSITIONS=597} [2021-06-13 08:19:45,521 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 487 predicate places. [2021-06-13 08:19:45,522 INFO L482 AbstractCegarLoop]: Abstraction has has 526 places, 597 transitions, 16515 flow [2021-06-13 08:19:45,522 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) [2021-06-13 08:19:45,522 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:45,522 INFO L255 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] [2021-06-13 08:19:45,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-13 08:19:45,522 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:45,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:45,522 INFO L82 PathProgramCache]: Analyzing trace with hash -592167244, now seen corresponding path program 67 times [2021-06-13 08:19:45,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:45,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864492263] [2021-06-13 08:19:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:45,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:45,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:45,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:45,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:45,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:45,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:45,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:45,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:45,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:45,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:45,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:45,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:45,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:45,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:45,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:45,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:45,580 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:45,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:45,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:45,582 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:45,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864492263] [2021-06-13 08:19:45,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864492263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:45,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:45,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:19:45,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726038520] [2021-06-13 08:19:45,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:19:45,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:45,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:19:45,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:19:45,584 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:45,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 597 transitions, 16515 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) [2021-06-13 08:19:45,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:45,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:45,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:46,466 INFO L129 PetriNetUnfolder]: 1116/2625 cut-off events. [2021-06-13 08:19:46,466 INFO L130 PetriNetUnfolder]: For 161109/161109 co-relation queries the response was YES. [2021-06-13 08:19:46,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32454 conditions, 2625 events. 1116/2625 cut-off events. For 161109/161109 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 22027 event pairs, 91 based on Foata normal form. 1/2626 useless extension candidates. Maximal degree in co-relation 32147. Up to 1696 conditions per place. [2021-06-13 08:19:46,607 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 576 selfloop transitions, 47 changer transitions 4/635 dead transitions. [2021-06-13 08:19:46,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 635 transitions, 18691 flow [2021-06-13 08:19:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:19:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:19:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-06-13 08:19:46,608 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-06-13 08:19:46,608 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-06-13 08:19:46,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-06-13 08:19:46,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:46,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-06-13 08:19:46,608 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) [2021-06-13 08:19:46,609 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) [2021-06-13 08:19:46,609 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) [2021-06-13 08:19:46,609 INFO L185 Difference]: Start difference. First operand has 526 places, 597 transitions, 16515 flow. Second operand 8 states and 268 transitions. [2021-06-13 08:19:46,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 635 transitions, 18691 flow [2021-06-13 08:19:47,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 635 transitions, 18214 flow, removed 37 selfloop flow, removed 23 redundant places. [2021-06-13 08:19:47,728 INFO L241 Difference]: Finished difference. Result has 513 places, 606 transitions, 16734 flow [2021-06-13 08:19:47,729 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16084, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16734, PETRI_PLACES=513, PETRI_TRANSITIONS=606} [2021-06-13 08:19:47,729 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 474 predicate places. [2021-06-13 08:19:47,729 INFO L482 AbstractCegarLoop]: Abstraction has has 513 places, 606 transitions, 16734 flow [2021-06-13 08:19:47,729 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) [2021-06-13 08:19:47,729 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:47,729 INFO L255 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] [2021-06-13 08:19:47,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-13 08:19:47,729 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:47,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:47,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1160886430, now seen corresponding path program 68 times [2021-06-13 08:19:47,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:47,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249497296] [2021-06-13 08:19:47,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:47,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:47,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:47,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:47,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:47,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:47,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:47,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:47,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:47,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:47,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:47,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:47,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:47,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:47,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:47,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:47,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:47,802 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:47,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:47,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:47,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249497296] [2021-06-13 08:19:47,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249497296] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:47,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:47,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:47,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236796091] [2021-06-13 08:19:47,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:47,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:47,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:47,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:47,805 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:47,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 606 transitions, 16734 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) [2021-06-13 08:19:47,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:47,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:47,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:48,711 INFO L129 PetriNetUnfolder]: 1149/2714 cut-off events. [2021-06-13 08:19:48,711 INFO L130 PetriNetUnfolder]: For 178732/178732 co-relation queries the response was YES. [2021-06-13 08:19:48,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33821 conditions, 2714 events. 1149/2714 cut-off events. For 178732/178732 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 23035 event pairs, 60 based on Foata normal form. 1/2715 useless extension candidates. Maximal degree in co-relation 33521. Up to 1845 conditions per place. [2021-06-13 08:19:48,772 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 592 selfloop transitions, 56 changer transitions 0/656 dead transitions. [2021-06-13 08:19:48,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 656 transitions, 19812 flow [2021-06-13 08:19:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-06-13 08:19:48,773 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-06-13 08:19:48,773 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-06-13 08:19:48,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-06-13 08:19:48,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:48,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-06-13 08:19:48,774 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) [2021-06-13 08:19:48,774 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) [2021-06-13 08:19:48,774 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) [2021-06-13 08:19:48,774 INFO L185 Difference]: Start difference. First operand has 513 places, 606 transitions, 16734 flow. Second operand 9 states and 296 transitions. [2021-06-13 08:19:48,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 656 transitions, 19812 flow [2021-06-13 08:19:50,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 656 transitions, 18882 flow, removed 382 selfloop flow, removed 11 redundant places. [2021-06-13 08:19:50,118 INFO L241 Difference]: Finished difference. Result has 514 places, 632 transitions, 17715 flow [2021-06-13 08:19:50,119 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16184, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17715, PETRI_PLACES=514, PETRI_TRANSITIONS=632} [2021-06-13 08:19:50,119 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 475 predicate places. [2021-06-13 08:19:50,119 INFO L482 AbstractCegarLoop]: Abstraction has has 514 places, 632 transitions, 17715 flow [2021-06-13 08:19:50,119 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) [2021-06-13 08:19:50,119 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:50,119 INFO L255 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] [2021-06-13 08:19:50,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-13 08:19:50,119 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:50,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:50,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1952470194, now seen corresponding path program 69 times [2021-06-13 08:19:50,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:50,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749987151] [2021-06-13 08:19:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:50,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:50,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:50,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:50,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:50,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:50,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:50,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:50,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:50,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:50,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:50,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:50,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:50,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:50,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:50,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:50,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:50,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:50,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:50,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:50,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749987151] [2021-06-13 08:19:50,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749987151] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:50,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:50,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:19:50,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788843215] [2021-06-13 08:19:50,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:19:50,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:50,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:19:50,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:19:50,193 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:50,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 632 transitions, 17715 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) [2021-06-13 08:19:50,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:50,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:50,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:51,127 INFO L129 PetriNetUnfolder]: 1152/2746 cut-off events. [2021-06-13 08:19:51,127 INFO L130 PetriNetUnfolder]: For 162281/162281 co-relation queries the response was YES. [2021-06-13 08:19:51,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32950 conditions, 2746 events. 1152/2746 cut-off events. For 162281/162281 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 23379 event pairs, 63 based on Foata normal form. 1/2747 useless extension candidates. Maximal degree in co-relation 32649. Up to 1830 conditions per place. [2021-06-13 08:19:51,181 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 592 selfloop transitions, 57 changer transitions 7/664 dead transitions. [2021-06-13 08:19:51,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 664 transitions, 19949 flow [2021-06-13 08:19:51,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:19:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:19:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2021-06-13 08:19:51,182 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2021-06-13 08:19:51,182 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2021-06-13 08:19:51,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2021-06-13 08:19:51,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:51,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2021-06-13 08:19:51,183 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) [2021-06-13 08:19:51,183 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) [2021-06-13 08:19:51,183 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) [2021-06-13 08:19:51,183 INFO L185 Difference]: Start difference. First operand has 514 places, 632 transitions, 17715 flow. Second operand 8 states and 266 transitions. [2021-06-13 08:19:51,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 664 transitions, 19949 flow [2021-06-13 08:19:52,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 664 transitions, 19081 flow, removed 434 selfloop flow, removed 0 redundant places. [2021-06-13 08:19:52,458 INFO L241 Difference]: Finished difference. Result has 526 places, 634 transitions, 17342 flow [2021-06-13 08:19:52,458 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16847, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17342, PETRI_PLACES=526, PETRI_TRANSITIONS=634} [2021-06-13 08:19:52,458 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 487 predicate places. [2021-06-13 08:19:52,458 INFO L482 AbstractCegarLoop]: Abstraction has has 526 places, 634 transitions, 17342 flow [2021-06-13 08:19:52,458 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) [2021-06-13 08:19:52,458 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:52,458 INFO L255 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] [2021-06-13 08:19:52,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-13 08:19:52,459 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:52,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:52,459 INFO L82 PathProgramCache]: Analyzing trace with hash -275088150, now seen corresponding path program 70 times [2021-06-13 08:19:52,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:52,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366522042] [2021-06-13 08:19:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:52,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:52,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:52,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:52,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:52,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:52,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:52,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:52,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:52,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:52,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:52,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:52,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:52,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:52,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:52,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:52,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:52,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:52,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:52,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:52,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:52,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366522042] [2021-06-13 08:19:52,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366522042] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:52,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:52,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:52,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327445321] [2021-06-13 08:19:52,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:52,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:52,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:52,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:52,523 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:52,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 634 transitions, 17342 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) [2021-06-13 08:19:52,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:52,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:52,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:53,469 INFO L129 PetriNetUnfolder]: 1183/2820 cut-off events. [2021-06-13 08:19:53,469 INFO L130 PetriNetUnfolder]: For 180187/180187 co-relation queries the response was YES. [2021-06-13 08:19:53,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33868 conditions, 2820 events. 1183/2820 cut-off events. For 180187/180187 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 24126 event pairs, 70 based on Foata normal form. 1/2821 useless extension candidates. Maximal degree in co-relation 33558. Up to 1843 conditions per place. [2021-06-13 08:19:53,529 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 593 selfloop transitions, 88 changer transitions 0/689 dead transitions. [2021-06-13 08:19:53,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 689 transitions, 20320 flow [2021-06-13 08:19:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-06-13 08:19:53,530 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-06-13 08:19:53,530 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-06-13 08:19:53,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-06-13 08:19:53,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:53,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-06-13 08:19:53,530 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) [2021-06-13 08:19:53,531 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) [2021-06-13 08:19:53,531 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) [2021-06-13 08:19:53,531 INFO L185 Difference]: Start difference. First operand has 526 places, 634 transitions, 17342 flow. Second operand 9 states and 296 transitions. [2021-06-13 08:19:53,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 689 transitions, 20320 flow [2021-06-13 08:19:54,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 689 transitions, 19934 flow, removed 167 selfloop flow, removed 4 redundant places. [2021-06-13 08:19:55,008 INFO L241 Difference]: Finished difference. Result has 535 places, 665 transitions, 18825 flow [2021-06-13 08:19:55,008 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16968, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18825, PETRI_PLACES=535, PETRI_TRANSITIONS=665} [2021-06-13 08:19:55,008 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 496 predicate places. [2021-06-13 08:19:55,008 INFO L482 AbstractCegarLoop]: Abstraction has has 535 places, 665 transitions, 18825 flow [2021-06-13 08:19:55,008 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) [2021-06-13 08:19:55,009 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:55,009 INFO L255 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] [2021-06-13 08:19:55,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-13 08:19:55,009 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:55,009 INFO L82 PathProgramCache]: Analyzing trace with hash 886503768, now seen corresponding path program 71 times [2021-06-13 08:19:55,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:55,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151724737] [2021-06-13 08:19:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:55,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:55,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:55,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:55,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:55,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:55,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:55,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:55,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:55,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:55,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:55,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:55,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:55,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:55,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:55,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:55,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:55,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:55,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:55,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:55,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151724737] [2021-06-13 08:19:55,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151724737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:55,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:55,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:19:55,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149030707] [2021-06-13 08:19:55,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:19:55,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:55,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:19:55,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:19:55,090 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:55,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 665 transitions, 18825 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) [2021-06-13 08:19:55,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:55,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:55,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:56,048 INFO L129 PetriNetUnfolder]: 1210/2875 cut-off events. [2021-06-13 08:19:56,048 INFO L130 PetriNetUnfolder]: For 210010/210010 co-relation queries the response was YES. [2021-06-13 08:19:56,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35844 conditions, 2875 events. 1210/2875 cut-off events. For 210010/210010 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 24650 event pairs, 59 based on Foata normal form. 1/2876 useless extension candidates. Maximal degree in co-relation 35530. Up to 1925 conditions per place. [2021-06-13 08:19:56,129 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 638 selfloop transitions, 54 changer transitions 3/703 dead transitions. [2021-06-13 08:19:56,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 703 transitions, 21265 flow [2021-06-13 08:19:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:19:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:19:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-06-13 08:19:56,130 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-06-13 08:19:56,130 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-06-13 08:19:56,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-06-13 08:19:56,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:56,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-06-13 08:19:56,130 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) [2021-06-13 08:19:56,131 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) [2021-06-13 08:19:56,131 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) [2021-06-13 08:19:56,131 INFO L185 Difference]: Start difference. First operand has 535 places, 665 transitions, 18825 flow. Second operand 8 states and 267 transitions. [2021-06-13 08:19:56,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 703 transitions, 21265 flow [2021-06-13 08:19:57,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 703 transitions, 20365 flow, removed 450 selfloop flow, removed 0 redundant places. [2021-06-13 08:19:57,706 INFO L241 Difference]: Finished difference. Result has 544 places, 676 transitions, 18826 flow [2021-06-13 08:19:57,706 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17937, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18826, PETRI_PLACES=544, PETRI_TRANSITIONS=676} [2021-06-13 08:19:57,706 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 505 predicate places. [2021-06-13 08:19:57,706 INFO L482 AbstractCegarLoop]: Abstraction has has 544 places, 676 transitions, 18826 flow [2021-06-13 08:19:57,706 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) [2021-06-13 08:19:57,706 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:19:57,706 INFO L255 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] [2021-06-13 08:19:57,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-13 08:19:57,707 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:19:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:19:57,707 INFO L82 PathProgramCache]: Analyzing trace with hash 106570748, now seen corresponding path program 72 times [2021-06-13 08:19:57,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:19:57,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889789490] [2021-06-13 08:19:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:19:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:19:57,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:57,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:57,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:57,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:57,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:57,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:57,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:57,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:19:57,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:57,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:57,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:57,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:57,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:57,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:19:57,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:19:57,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:19:57,765 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:19:57,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:19:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:19:57,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:19:57,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889789490] [2021-06-13 08:19:57,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889789490] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:19:57,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:19:57,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:19:57,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166583552] [2021-06-13 08:19:57,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:19:57,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:19:57,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:19:57,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:19:57,769 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:19:57,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 676 transitions, 18826 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) [2021-06-13 08:19:57,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:19:57,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:19:57,769 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:19:58,898 INFO L129 PetriNetUnfolder]: 1210/2869 cut-off events. [2021-06-13 08:19:58,899 INFO L130 PetriNetUnfolder]: For 197780/197780 co-relation queries the response was YES. [2021-06-13 08:19:58,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35463 conditions, 2869 events. 1210/2869 cut-off events. For 197780/197780 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 24509 event pairs, 94 based on Foata normal form. 1/2870 useless extension candidates. Maximal degree in co-relation 35143. Up to 1756 conditions per place. [2021-06-13 08:19:58,955 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 605 selfloop transitions, 89 changer transitions 11/713 dead transitions. [2021-06-13 08:19:58,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 713 transitions, 21282 flow [2021-06-13 08:19:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:19:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:19:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-06-13 08:19:58,956 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-06-13 08:19:58,956 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-06-13 08:19:58,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-06-13 08:19:58,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:19:58,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-06-13 08:19:58,956 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) [2021-06-13 08:19:58,956 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) [2021-06-13 08:19:58,957 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) [2021-06-13 08:19:58,957 INFO L185 Difference]: Start difference. First operand has 544 places, 676 transitions, 18826 flow. Second operand 9 states and 299 transitions. [2021-06-13 08:19:58,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 713 transitions, 21282 flow [2021-06-13 08:20:00,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 713 transitions, 20717 flow, removed 273 selfloop flow, removed 2 redundant places. [2021-06-13 08:20:00,377 INFO L241 Difference]: Finished difference. Result has 557 places, 675 transitions, 18688 flow [2021-06-13 08:20:00,377 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=18265, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18688, PETRI_PLACES=557, PETRI_TRANSITIONS=675} [2021-06-13 08:20:00,378 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 518 predicate places. [2021-06-13 08:20:00,378 INFO L482 AbstractCegarLoop]: Abstraction has has 557 places, 675 transitions, 18688 flow [2021-06-13 08:20:00,378 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) [2021-06-13 08:20:00,378 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:00,378 INFO L255 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] [2021-06-13 08:20:00,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-13 08:20:00,378 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:00,378 INFO L82 PathProgramCache]: Analyzing trace with hash -781753058, now seen corresponding path program 73 times [2021-06-13 08:20:00,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:00,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574402757] [2021-06-13 08:20:00,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:00,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:00,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:00,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:00,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:00,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:00,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:00,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:00,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:00,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:00,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:00,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:00,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:00,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:00,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:00,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:00,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:00,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:00,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:00,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:00,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574402757] [2021-06-13 08:20:00,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574402757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:00,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:00,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:20:00,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321097345] [2021-06-13 08:20:00,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:20:00,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:00,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:20:00,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:20:00,452 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:00,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 675 transitions, 18688 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) [2021-06-13 08:20:00,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:00,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:00,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:01,699 INFO L129 PetriNetUnfolder]: 1231/2912 cut-off events. [2021-06-13 08:20:01,699 INFO L130 PetriNetUnfolder]: For 214980/214980 co-relation queries the response was YES. [2021-06-13 08:20:01,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36613 conditions, 2912 events. 1231/2912 cut-off events. For 214980/214980 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 24955 event pairs, 82 based on Foata normal form. 1/2913 useless extension candidates. Maximal degree in co-relation 36285. Up to 1799 conditions per place. [2021-06-13 08:20:01,770 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 629 selfloop transitions, 78 changer transitions 4/719 dead transitions. [2021-06-13 08:20:01,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 719 transitions, 21336 flow [2021-06-13 08:20:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:20:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:20:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:20:01,771 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:20:01,771 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:20:01,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:20:01,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:01,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:20:01,772 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) [2021-06-13 08:20:01,772 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) [2021-06-13 08:20:01,772 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) [2021-06-13 08:20:01,772 INFO L185 Difference]: Start difference. First operand has 557 places, 675 transitions, 18688 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:20:01,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 719 transitions, 21336 flow [2021-06-13 08:20:03,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 719 transitions, 20833 flow, removed 106 selfloop flow, removed 14 redundant places. [2021-06-13 08:20:03,424 INFO L241 Difference]: Finished difference. Result has 553 places, 687 transitions, 19200 flow [2021-06-13 08:20:03,424 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=18205, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19200, PETRI_PLACES=553, PETRI_TRANSITIONS=687} [2021-06-13 08:20:03,424 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 514 predicate places. [2021-06-13 08:20:03,424 INFO L482 AbstractCegarLoop]: Abstraction has has 553 places, 687 transitions, 19200 flow [2021-06-13 08:20:03,425 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) [2021-06-13 08:20:03,425 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:03,425 INFO L255 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] [2021-06-13 08:20:03,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-13 08:20:03,425 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:03,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:03,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1965285654, now seen corresponding path program 74 times [2021-06-13 08:20:03,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:03,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020874130] [2021-06-13 08:20:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:03,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:03,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:03,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:03,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:03,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:03,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:03,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:03,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:03,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:03,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:03,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:03,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:03,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:03,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:03,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:03,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:03,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:03,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:03,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:03,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020874130] [2021-06-13 08:20:03,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020874130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:03,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:03,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:20:03,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760564085] [2021-06-13 08:20:03,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:20:03,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:03,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:20:03,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:20:03,502 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:03,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 687 transitions, 19200 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) [2021-06-13 08:20:03,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:03,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:03,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:04,551 INFO L129 PetriNetUnfolder]: 1242/2947 cut-off events. [2021-06-13 08:20:04,551 INFO L130 PetriNetUnfolder]: For 222543/222543 co-relation queries the response was YES. [2021-06-13 08:20:04,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37178 conditions, 2947 events. 1242/2947 cut-off events. For 222543/222543 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 25352 event pairs, 66 based on Foata normal form. 1/2948 useless extension candidates. Maximal degree in co-relation 36853. Up to 1967 conditions per place. [2021-06-13 08:20:04,629 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 660 selfloop transitions, 59 changer transitions 5/732 dead transitions. [2021-06-13 08:20:04,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 732 transitions, 22016 flow [2021-06-13 08:20:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:20:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:20:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2021-06-13 08:20:04,630 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2021-06-13 08:20:04,631 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 266 transitions. [2021-06-13 08:20:04,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 266 transitions. [2021-06-13 08:20:04,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:04,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 266 transitions. [2021-06-13 08:20:04,631 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) [2021-06-13 08:20:04,631 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) [2021-06-13 08:20:04,631 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) [2021-06-13 08:20:04,631 INFO L185 Difference]: Start difference. First operand has 553 places, 687 transitions, 19200 flow. Second operand 8 states and 266 transitions. [2021-06-13 08:20:04,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 732 transitions, 22016 flow [2021-06-13 08:20:06,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 732 transitions, 21405 flow, removed 282 selfloop flow, removed 3 redundant places. [2021-06-13 08:20:06,287 INFO L241 Difference]: Finished difference. Result has 560 places, 704 transitions, 19884 flow [2021-06-13 08:20:06,287 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=18591, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19884, PETRI_PLACES=560, PETRI_TRANSITIONS=704} [2021-06-13 08:20:06,288 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 521 predicate places. [2021-06-13 08:20:06,288 INFO L482 AbstractCegarLoop]: Abstraction has has 560 places, 704 transitions, 19884 flow [2021-06-13 08:20:06,288 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) [2021-06-13 08:20:06,288 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:06,288 INFO L255 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] [2021-06-13 08:20:06,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-13 08:20:06,288 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:06,288 INFO L82 PathProgramCache]: Analyzing trace with hash -655605934, now seen corresponding path program 75 times [2021-06-13 08:20:06,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:06,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090067095] [2021-06-13 08:20:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:06,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:06,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:06,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:06,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:06,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:06,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:06,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:06,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:06,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:06,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:06,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:06,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:06,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:06,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:06,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:06,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:06,359 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:06,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:06,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:06,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090067095] [2021-06-13 08:20:06,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090067095] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:06,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:06,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:20:06,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678763537] [2021-06-13 08:20:06,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:20:06,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:06,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:20:06,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:20:06,362 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:06,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 704 transitions, 19884 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) [2021-06-13 08:20:06,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:06,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:06,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:07,616 INFO L129 PetriNetUnfolder]: 1253/2987 cut-off events. [2021-06-13 08:20:07,616 INFO L130 PetriNetUnfolder]: For 214788/214788 co-relation queries the response was YES. [2021-06-13 08:20:07,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37124 conditions, 2987 events. 1253/2987 cut-off events. For 214788/214788 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 25854 event pairs, 51 based on Foata normal form. 1/2988 useless extension candidates. Maximal degree in co-relation 36796. Up to 2056 conditions per place. [2021-06-13 08:20:07,673 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 680 selfloop transitions, 56 changer transitions 4/748 dead transitions. [2021-06-13 08:20:07,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 748 transitions, 22882 flow [2021-06-13 08:20:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:20:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:20:07,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-06-13 08:20:07,674 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-06-13 08:20:07,674 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-06-13 08:20:07,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-06-13 08:20:07,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:07,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-06-13 08:20:07,674 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) [2021-06-13 08:20:07,674 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) [2021-06-13 08:20:07,675 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) [2021-06-13 08:20:07,675 INFO L185 Difference]: Start difference. First operand has 560 places, 704 transitions, 19884 flow. Second operand 10 states and 328 transitions. [2021-06-13 08:20:07,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 748 transitions, 22882 flow [2021-06-13 08:20:09,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 748 transitions, 22172 flow, removed 355 selfloop flow, removed 0 redundant places. [2021-06-13 08:20:09,273 INFO L241 Difference]: Finished difference. Result has 571 places, 717 transitions, 20365 flow [2021-06-13 08:20:09,274 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=19174, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20365, PETRI_PLACES=571, PETRI_TRANSITIONS=717} [2021-06-13 08:20:09,274 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 532 predicate places. [2021-06-13 08:20:09,274 INFO L482 AbstractCegarLoop]: Abstraction has has 571 places, 717 transitions, 20365 flow [2021-06-13 08:20:09,274 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) [2021-06-13 08:20:09,274 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:09,274 INFO L255 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] [2021-06-13 08:20:09,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-13 08:20:09,274 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:09,274 INFO L82 PathProgramCache]: Analyzing trace with hash -303870808, now seen corresponding path program 76 times [2021-06-13 08:20:09,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:09,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121327405] [2021-06-13 08:20:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:09,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:09,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:09,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:09,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:09,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:09,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:09,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:09,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:09,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:09,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:09,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:09,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:09,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:09,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:09,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:09,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:09,344 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:09,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:09,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:09,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121327405] [2021-06-13 08:20:09,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121327405] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:09,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:09,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:20:09,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652517168] [2021-06-13 08:20:09,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:20:09,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:09,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:20:09,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:20:09,350 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:09,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 717 transitions, 20365 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) [2021-06-13 08:20:09,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:09,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:09,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:10,493 INFO L129 PetriNetUnfolder]: 1282/3062 cut-off events. [2021-06-13 08:20:10,493 INFO L130 PetriNetUnfolder]: For 236879/236879 co-relation queries the response was YES. [2021-06-13 08:20:10,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38545 conditions, 3062 events. 1282/3062 cut-off events. For 236879/236879 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 26706 event pairs, 82 based on Foata normal form. 1/3063 useless extension candidates. Maximal degree in co-relation 38211. Up to 1948 conditions per place. [2021-06-13 08:20:10,562 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 679 selfloop transitions, 69 changer transitions 5/761 dead transitions. [2021-06-13 08:20:10,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 761 transitions, 23135 flow [2021-06-13 08:20:10,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:20:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:20:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:20:10,563 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:20:10,563 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:20:10,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:20:10,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:10,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:20:10,564 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) [2021-06-13 08:20:10,564 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) [2021-06-13 08:20:10,564 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) [2021-06-13 08:20:10,564 INFO L185 Difference]: Start difference. First operand has 571 places, 717 transitions, 20365 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:20:10,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 761 transitions, 23135 flow [2021-06-13 08:20:12,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 761 transitions, 22226 flow, removed 429 selfloop flow, removed 4 redundant places. [2021-06-13 08:20:12,551 INFO L241 Difference]: Finished difference. Result has 577 places, 728 transitions, 20461 flow [2021-06-13 08:20:12,551 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=19456, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20461, PETRI_PLACES=577, PETRI_TRANSITIONS=728} [2021-06-13 08:20:12,552 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 538 predicate places. [2021-06-13 08:20:12,552 INFO L482 AbstractCegarLoop]: Abstraction has has 577 places, 728 transitions, 20461 flow [2021-06-13 08:20:12,552 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) [2021-06-13 08:20:12,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:12,552 INFO L255 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] [2021-06-13 08:20:12,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-13 08:20:12,552 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:12,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1762941312, now seen corresponding path program 77 times [2021-06-13 08:20:12,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:12,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991387735] [2021-06-13 08:20:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:12,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:12,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:12,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:12,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:12,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:12,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:12,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:12,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:12,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:12,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:12,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:12,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:12,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:12,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:12,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:12,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:12,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:12,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:12,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:12,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991387735] [2021-06-13 08:20:12,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991387735] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:12,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:12,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:20:12,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202869953] [2021-06-13 08:20:12,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:20:12,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:12,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:20:12,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:20:12,631 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:12,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 728 transitions, 20461 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) [2021-06-13 08:20:12,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:12,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:12,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:13,835 INFO L129 PetriNetUnfolder]: 1279/3066 cut-off events. [2021-06-13 08:20:13,836 INFO L130 PetriNetUnfolder]: For 235818/235818 co-relation queries the response was YES. [2021-06-13 08:20:13,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38656 conditions, 3066 events. 1279/3066 cut-off events. For 235818/235818 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 26714 event pairs, 58 based on Foata normal form. 1/3067 useless extension candidates. Maximal degree in co-relation 38321. Up to 2004 conditions per place. [2021-06-13 08:20:13,923 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 661 selfloop transitions, 95 changer transitions 5/769 dead transitions. [2021-06-13 08:20:13,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 769 transitions, 23555 flow [2021-06-13 08:20:13,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:20:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:20:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-06-13 08:20:13,924 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-06-13 08:20:13,924 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-06-13 08:20:13,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-06-13 08:20:13,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:13,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-06-13 08:20:13,924 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) [2021-06-13 08:20:13,925 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) [2021-06-13 08:20:13,925 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) [2021-06-13 08:20:13,925 INFO L185 Difference]: Start difference. First operand has 577 places, 728 transitions, 20461 flow. Second operand 10 states and 328 transitions. [2021-06-13 08:20:13,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 769 transitions, 23555 flow [2021-06-13 08:20:15,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 769 transitions, 22919 flow, removed 297 selfloop flow, removed 3 redundant places. [2021-06-13 08:20:15,815 INFO L241 Difference]: Finished difference. Result has 586 places, 737 transitions, 21069 flow [2021-06-13 08:20:15,816 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=19831, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21069, PETRI_PLACES=586, PETRI_TRANSITIONS=737} [2021-06-13 08:20:15,816 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 547 predicate places. [2021-06-13 08:20:15,816 INFO L482 AbstractCegarLoop]: Abstraction has has 586 places, 737 transitions, 21069 flow [2021-06-13 08:20:15,816 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) [2021-06-13 08:20:15,816 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:15,816 INFO L255 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] [2021-06-13 08:20:15,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-13 08:20:15,816 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:15,817 INFO L82 PathProgramCache]: Analyzing trace with hash 933212052, now seen corresponding path program 78 times [2021-06-13 08:20:15,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:15,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226516371] [2021-06-13 08:20:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:15,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:15,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:15,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:15,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:15,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:15,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:15,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:15,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:15,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:15,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:15,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:15,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:15,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:15,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:15,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:15,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:15,874 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:15,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:15,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:15,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226516371] [2021-06-13 08:20:15,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226516371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:15,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:15,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:20:15,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116393152] [2021-06-13 08:20:15,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:20:15,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:15,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:20:15,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:20:15,878 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:15,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 737 transitions, 21069 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) [2021-06-13 08:20:15,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:15,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:15,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:17,065 INFO L129 PetriNetUnfolder]: 1281/3073 cut-off events. [2021-06-13 08:20:17,065 INFO L130 PetriNetUnfolder]: For 222919/222919 co-relation queries the response was YES. [2021-06-13 08:20:17,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38283 conditions, 3073 events. 1281/3073 cut-off events. For 222919/222919 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 26841 event pairs, 65 based on Foata normal form. 1/3074 useless extension candidates. Maximal degree in co-relation 37945. Up to 1959 conditions per place. [2021-06-13 08:20:17,145 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 655 selfloop transitions, 102 changer transitions 9/774 dead transitions. [2021-06-13 08:20:17,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 774 transitions, 23911 flow [2021-06-13 08:20:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:20:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:20:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:20:17,146 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:20:17,146 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:20:17,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:20:17,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:17,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:20:17,146 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) [2021-06-13 08:20:17,147 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) [2021-06-13 08:20:17,147 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) [2021-06-13 08:20:17,147 INFO L185 Difference]: Start difference. First operand has 586 places, 737 transitions, 21069 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:20:17,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 774 transitions, 23911 flow [2021-06-13 08:20:18,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 774 transitions, 23097 flow, removed 385 selfloop flow, removed 3 redundant places. [2021-06-13 08:20:18,968 INFO L241 Difference]: Finished difference. Result has 597 places, 739 transitions, 21086 flow [2021-06-13 08:20:18,969 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=20255, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21086, PETRI_PLACES=597, PETRI_TRANSITIONS=739} [2021-06-13 08:20:18,969 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 558 predicate places. [2021-06-13 08:20:18,969 INFO L482 AbstractCegarLoop]: Abstraction has has 597 places, 739 transitions, 21086 flow [2021-06-13 08:20:18,969 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) [2021-06-13 08:20:18,969 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:18,969 INFO L255 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] [2021-06-13 08:20:18,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-13 08:20:18,969 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:18,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:18,970 INFO L82 PathProgramCache]: Analyzing trace with hash -259155880, now seen corresponding path program 79 times [2021-06-13 08:20:18,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:18,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193125710] [2021-06-13 08:20:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:18,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:18,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:18,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:18,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:18,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:18,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:18,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:18,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:19,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:19,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:19,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:19,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:19,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:19,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:19,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:19,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:19,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:19,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:19,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:19,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:19,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193125710] [2021-06-13 08:20:19,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193125710] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:19,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:19,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:20:19,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730229421] [2021-06-13 08:20:19,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:20:19,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:19,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:20:19,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:20:19,047 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:19,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 739 transitions, 21086 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) [2021-06-13 08:20:19,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:19,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:19,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:20,403 INFO L129 PetriNetUnfolder]: 1276/3060 cut-off events. [2021-06-13 08:20:20,403 INFO L130 PetriNetUnfolder]: For 229882/229882 co-relation queries the response was YES. [2021-06-13 08:20:20,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38627 conditions, 3060 events. 1276/3060 cut-off events. For 229882/229882 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 26694 event pairs, 92 based on Foata normal form. 1/3061 useless extension candidates. Maximal degree in co-relation 38283. Up to 1774 conditions per place. [2021-06-13 08:20:20,466 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 630 selfloop transitions, 130 changer transitions 13/781 dead transitions. [2021-06-13 08:20:20,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 781 transitions, 24062 flow [2021-06-13 08:20:20,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:20:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:20:20,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-06-13 08:20:20,467 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-06-13 08:20:20,467 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-06-13 08:20:20,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-06-13 08:20:20,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:20,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-06-13 08:20:20,468 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) [2021-06-13 08:20:20,468 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) [2021-06-13 08:20:20,468 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) [2021-06-13 08:20:20,468 INFO L185 Difference]: Start difference. First operand has 597 places, 739 transitions, 21086 flow. Second operand 10 states and 331 transitions. [2021-06-13 08:20:20,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 781 transitions, 24062 flow [2021-06-13 08:20:22,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 781 transitions, 23482 flow, removed 223 selfloop flow, removed 8 redundant places. [2021-06-13 08:20:22,283 INFO L241 Difference]: Finished difference. Result has 605 places, 738 transitions, 21225 flow [2021-06-13 08:20:22,284 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=20514, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21225, PETRI_PLACES=605, PETRI_TRANSITIONS=738} [2021-06-13 08:20:22,284 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 566 predicate places. [2021-06-13 08:20:22,284 INFO L482 AbstractCegarLoop]: Abstraction has has 605 places, 738 transitions, 21225 flow [2021-06-13 08:20:22,284 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) [2021-06-13 08:20:22,284 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:22,284 INFO L255 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] [2021-06-13 08:20:22,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-13 08:20:22,284 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:22,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1328865048, now seen corresponding path program 80 times [2021-06-13 08:20:22,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:22,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052274140] [2021-06-13 08:20:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:22,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:22,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:22,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:22,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:22,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:22,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:22,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:22,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:22,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:22,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:22,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:22,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:22,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:22,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:22,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:22,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:22,370 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:22,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:22,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:22,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052274140] [2021-06-13 08:20:22,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052274140] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:22,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:22,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:20:22,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74126742] [2021-06-13 08:20:22,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:20:22,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:22,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:20:22,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:20:22,374 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:22,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 738 transitions, 21225 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) [2021-06-13 08:20:22,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:22,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:22,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:23,654 INFO L129 PetriNetUnfolder]: 1268/3061 cut-off events. [2021-06-13 08:20:23,654 INFO L130 PetriNetUnfolder]: For 229040/229040 co-relation queries the response was YES. [2021-06-13 08:20:23,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38995 conditions, 3061 events. 1268/3061 cut-off events. For 229040/229040 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 26862 event pairs, 56 based on Foata normal form. 1/3062 useless extension candidates. Maximal degree in co-relation 38647. Up to 2087 conditions per place. [2021-06-13 08:20:23,738 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 707 selfloop transitions, 59 changer transitions 4/778 dead transitions. [2021-06-13 08:20:23,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 778 transitions, 24129 flow [2021-06-13 08:20:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:20:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:20:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-06-13 08:20:23,739 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-06-13 08:20:23,739 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-06-13 08:20:23,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-06-13 08:20:23,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:23,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-06-13 08:20:23,740 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) [2021-06-13 08:20:23,740 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) [2021-06-13 08:20:23,740 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) [2021-06-13 08:20:23,740 INFO L185 Difference]: Start difference. First operand has 605 places, 738 transitions, 21225 flow. Second operand 10 states and 328 transitions. [2021-06-13 08:20:23,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 778 transitions, 24129 flow [2021-06-13 08:20:25,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 778 transitions, 23615 flow, removed 146 selfloop flow, removed 11 redundant places. [2021-06-13 08:20:25,832 INFO L241 Difference]: Finished difference. Result has 607 places, 747 transitions, 21720 flow [2021-06-13 08:20:25,833 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=20719, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21720, PETRI_PLACES=607, PETRI_TRANSITIONS=747} [2021-06-13 08:20:25,833 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 568 predicate places. [2021-06-13 08:20:25,833 INFO L482 AbstractCegarLoop]: Abstraction has has 607 places, 747 transitions, 21720 flow [2021-06-13 08:20:25,833 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) [2021-06-13 08:20:25,833 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:25,833 INFO L255 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] [2021-06-13 08:20:25,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-13 08:20:25,833 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:25,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:25,834 INFO L82 PathProgramCache]: Analyzing trace with hash -302557482, now seen corresponding path program 81 times [2021-06-13 08:20:25,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:25,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332749597] [2021-06-13 08:20:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:25,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:25,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:25,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:25,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:25,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:25,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:25,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:25,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:25,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:25,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:25,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:25,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:25,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:25,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:25,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:25,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:25,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:25,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:25,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:25,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332749597] [2021-06-13 08:20:25,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332749597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:25,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:25,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:20:25,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612010985] [2021-06-13 08:20:25,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:20:25,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:25,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:20:25,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:20:25,895 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:25,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 747 transitions, 21720 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) [2021-06-13 08:20:25,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:25,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:25,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:27,115 INFO L129 PetriNetUnfolder]: 1282/3100 cut-off events. [2021-06-13 08:20:27,115 INFO L130 PetriNetUnfolder]: For 250465/250465 co-relation queries the response was YES. [2021-06-13 08:20:27,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40028 conditions, 3100 events. 1282/3100 cut-off events. For 250465/250465 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 27255 event pairs, 89 based on Foata normal form. 1/3101 useless extension candidates. Maximal degree in co-relation 39678. Up to 1858 conditions per place. [2021-06-13 08:20:27,191 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 679 selfloop transitions, 97 changer transitions 7/791 dead transitions. [2021-06-13 08:20:27,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 791 transitions, 24716 flow [2021-06-13 08:20:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:20:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:20:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:20:27,192 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:20:27,192 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:20:27,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:20:27,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:27,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:20:27,193 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) [2021-06-13 08:20:27,193 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) [2021-06-13 08:20:27,193 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) [2021-06-13 08:20:27,193 INFO L185 Difference]: Start difference. First operand has 607 places, 747 transitions, 21720 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:20:27,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 791 transitions, 24716 flow [2021-06-13 08:20:29,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 791 transitions, 24001 flow, removed 321 selfloop flow, removed 5 redundant places. [2021-06-13 08:20:29,387 INFO L241 Difference]: Finished difference. Result has 612 places, 756 transitions, 21979 flow [2021-06-13 08:20:29,388 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=21007, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21979, PETRI_PLACES=612, PETRI_TRANSITIONS=756} [2021-06-13 08:20:29,388 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 573 predicate places. [2021-06-13 08:20:29,388 INFO L482 AbstractCegarLoop]: Abstraction has has 612 places, 756 transitions, 21979 flow [2021-06-13 08:20:29,388 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) [2021-06-13 08:20:29,388 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:29,388 INFO L255 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] [2021-06-13 08:20:29,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-13 08:20:29,388 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:29,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:29,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1166424966, now seen corresponding path program 82 times [2021-06-13 08:20:29,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:29,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710932047] [2021-06-13 08:20:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:29,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:29,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:29,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:29,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:29,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:29,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:29,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:29,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:29,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:29,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:29,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:29,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:29,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:29,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:29,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:29,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:29,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:29,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:29,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:29,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:29,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710932047] [2021-06-13 08:20:29,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710932047] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:29,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:29,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:20:29,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302230119] [2021-06-13 08:20:29,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:20:29,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:29,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:20:29,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:20:29,469 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:29,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 756 transitions, 21979 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) [2021-06-13 08:20:29,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:29,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:29,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:30,692 INFO L129 PetriNetUnfolder]: 1289/3133 cut-off events. [2021-06-13 08:20:30,693 INFO L130 PetriNetUnfolder]: For 254467/254467 co-relation queries the response was YES. [2021-06-13 08:20:30,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40428 conditions, 3133 events. 1289/3133 cut-off events. For 254467/254467 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 27750 event pairs, 74 based on Foata normal form. 1/3134 useless extension candidates. Maximal degree in co-relation 40078. Up to 2003 conditions per place. [2021-06-13 08:20:30,770 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 701 selfloop transitions, 92 changer transitions 3/804 dead transitions. [2021-06-13 08:20:30,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 804 transitions, 25304 flow [2021-06-13 08:20:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:20:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:20:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-06-13 08:20:30,770 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:20:30,771 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-06-13 08:20:30,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-06-13 08:20:30,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:30,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-06-13 08:20:30,771 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) [2021-06-13 08:20:30,772 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) [2021-06-13 08:20:30,772 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) [2021-06-13 08:20:30,772 INFO L185 Difference]: Start difference. First operand has 612 places, 756 transitions, 21979 flow. Second operand 9 states and 297 transitions. [2021-06-13 08:20:30,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 804 transitions, 25304 flow [2021-06-13 08:20:32,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 804 transitions, 24575 flow, removed 315 selfloop flow, removed 7 redundant places. [2021-06-13 08:20:32,879 INFO L241 Difference]: Finished difference. Result has 616 places, 776 transitions, 22975 flow [2021-06-13 08:20:32,880 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=21254, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22975, PETRI_PLACES=616, PETRI_TRANSITIONS=776} [2021-06-13 08:20:32,880 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 577 predicate places. [2021-06-13 08:20:32,880 INFO L482 AbstractCegarLoop]: Abstraction has has 616 places, 776 transitions, 22975 flow [2021-06-13 08:20:32,880 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) [2021-06-13 08:20:32,880 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:32,880 INFO L255 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] [2021-06-13 08:20:32,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-13 08:20:32,881 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:32,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:32,881 INFO L82 PathProgramCache]: Analyzing trace with hash -2011969320, now seen corresponding path program 83 times [2021-06-13 08:20:32,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:32,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832790846] [2021-06-13 08:20:32,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:32,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:32,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:32,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:32,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:32,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:32,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:32,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:32,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:32,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:32,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:32,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:32,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:32,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:32,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:32,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:32,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:32,953 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:32,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:32,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:32,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832790846] [2021-06-13 08:20:32,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832790846] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:32,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:32,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:20:32,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225443224] [2021-06-13 08:20:32,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:20:32,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:32,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:20:32,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:20:32,957 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:32,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 776 transitions, 22975 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) [2021-06-13 08:20:32,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:32,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:32,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:34,575 INFO L129 PetriNetUnfolder]: 1284/3124 cut-off events. [2021-06-13 08:20:34,575 INFO L130 PetriNetUnfolder]: For 230999/230999 co-relation queries the response was YES. [2021-06-13 08:20:34,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39651 conditions, 3124 events. 1284/3124 cut-off events. For 230999/230999 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 27624 event pairs, 82 based on Foata normal form. 1/3125 useless extension candidates. Maximal degree in co-relation 39298. Up to 1917 conditions per place. [2021-06-13 08:20:34,639 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 709 selfloop transitions, 91 changer transitions 10/818 dead transitions. [2021-06-13 08:20:34,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 818 transitions, 26097 flow [2021-06-13 08:20:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:20:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:20:34,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-06-13 08:20:34,640 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-06-13 08:20:34,641 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-06-13 08:20:34,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-06-13 08:20:34,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:34,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-06-13 08:20:34,641 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) [2021-06-13 08:20:34,642 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) [2021-06-13 08:20:34,642 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) [2021-06-13 08:20:34,642 INFO L185 Difference]: Start difference. First operand has 616 places, 776 transitions, 22975 flow. Second operand 10 states and 331 transitions. [2021-06-13 08:20:34,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 818 transitions, 26097 flow [2021-06-13 08:20:36,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 818 transitions, 25102 flow, removed 491 selfloop flow, removed 1 redundant places. [2021-06-13 08:20:36,790 INFO L241 Difference]: Finished difference. Result has 630 places, 778 transitions, 22848 flow [2021-06-13 08:20:36,790 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=21984, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=22848, PETRI_PLACES=630, PETRI_TRANSITIONS=778} [2021-06-13 08:20:36,791 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 591 predicate places. [2021-06-13 08:20:36,791 INFO L482 AbstractCegarLoop]: Abstraction has has 630 places, 778 transitions, 22848 flow [2021-06-13 08:20:36,791 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) [2021-06-13 08:20:36,791 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:36,791 INFO L255 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] [2021-06-13 08:20:36,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-13 08:20:36,791 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:36,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:36,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1399757730, now seen corresponding path program 84 times [2021-06-13 08:20:36,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:36,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844875593] [2021-06-13 08:20:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:36,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:36,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:36,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:36,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:36,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:36,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:36,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:36,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:36,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:36,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:36,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:36,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:36,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:36,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:36,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:36,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:36,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:36,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:36,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:36,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844875593] [2021-06-13 08:20:36,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844875593] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:36,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:36,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:20:36,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964826607] [2021-06-13 08:20:36,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:20:36,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:36,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:20:36,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:20:36,863 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:36,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 778 transitions, 22848 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) [2021-06-13 08:20:36,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:36,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:36,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:38,140 INFO L129 PetriNetUnfolder]: 1281/3102 cut-off events. [2021-06-13 08:20:38,140 INFO L130 PetriNetUnfolder]: For 223414/223414 co-relation queries the response was YES. [2021-06-13 08:20:38,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39494 conditions, 3102 events. 1281/3102 cut-off events. For 223414/223414 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 27331 event pairs, 74 based on Foata normal form. 1/3103 useless extension candidates. Maximal degree in co-relation 39133. Up to 2009 conditions per place. [2021-06-13 08:20:38,221 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 734 selfloop transitions, 70 changer transitions 9/821 dead transitions. [2021-06-13 08:20:38,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 821 transitions, 26185 flow [2021-06-13 08:20:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:20:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:20:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:20:38,222 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:20:38,222 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:20:38,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:20:38,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:38,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:20:38,222 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) [2021-06-13 08:20:38,222 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) [2021-06-13 08:20:38,223 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) [2021-06-13 08:20:38,223 INFO L185 Difference]: Start difference. First operand has 630 places, 778 transitions, 22848 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:20:38,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 821 transitions, 26185 flow [2021-06-13 08:20:40,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 821 transitions, 25658 flow, removed 225 selfloop flow, removed 5 redundant places. [2021-06-13 08:20:40,455 INFO L241 Difference]: Finished difference. Result has 639 places, 786 transitions, 23366 flow [2021-06-13 08:20:40,456 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=22325, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23366, PETRI_PLACES=639, PETRI_TRANSITIONS=786} [2021-06-13 08:20:40,456 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 600 predicate places. [2021-06-13 08:20:40,456 INFO L482 AbstractCegarLoop]: Abstraction has has 639 places, 786 transitions, 23366 flow [2021-06-13 08:20:40,456 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) [2021-06-13 08:20:40,456 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:40,456 INFO L255 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] [2021-06-13 08:20:40,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-13 08:20:40,456 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:40,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1449912294, now seen corresponding path program 85 times [2021-06-13 08:20:40,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:40,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613585304] [2021-06-13 08:20:40,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:40,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:40,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:40,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:40,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:40,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:40,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:40,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:40,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:40,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:40,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:40,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:40,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:40,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:40,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:40,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:40,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:40,538 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:40,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:40,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:40,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613585304] [2021-06-13 08:20:40,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613585304] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:40,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:40,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:20:40,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786979915] [2021-06-13 08:20:40,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:20:40,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:40,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:20:40,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:20:40,541 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:40,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 786 transitions, 23366 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) [2021-06-13 08:20:40,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:40,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:40,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:41,888 INFO L129 PetriNetUnfolder]: 1282/3115 cut-off events. [2021-06-13 08:20:41,888 INFO L130 PetriNetUnfolder]: For 229718/229718 co-relation queries the response was YES. [2021-06-13 08:20:41,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39955 conditions, 3115 events. 1282/3115 cut-off events. For 229718/229718 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 27548 event pairs, 91 based on Foata normal form. 1/3116 useless extension candidates. Maximal degree in co-relation 39590. Up to 1795 conditions per place. [2021-06-13 08:20:41,970 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 681 selfloop transitions, 127 changer transitions 12/828 dead transitions. [2021-06-13 08:20:41,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 828 transitions, 26610 flow [2021-06-13 08:20:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:20:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:20:41,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-06-13 08:20:41,971 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-06-13 08:20:41,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-06-13 08:20:41,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-06-13 08:20:41,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:41,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-06-13 08:20:41,971 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) [2021-06-13 08:20:41,972 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) [2021-06-13 08:20:41,972 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) [2021-06-13 08:20:41,972 INFO L185 Difference]: Start difference. First operand has 639 places, 786 transitions, 23366 flow. Second operand 10 states and 331 transitions. [2021-06-13 08:20:41,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 828 transitions, 26610 flow [2021-06-13 08:20:44,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 828 transitions, 25872 flow, removed 308 selfloop flow, removed 8 redundant places. [2021-06-13 08:20:44,248 INFO L241 Difference]: Finished difference. Result has 647 places, 786 transitions, 23411 flow [2021-06-13 08:20:44,249 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=22644, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23411, PETRI_PLACES=647, PETRI_TRANSITIONS=786} [2021-06-13 08:20:44,249 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 608 predicate places. [2021-06-13 08:20:44,249 INFO L482 AbstractCegarLoop]: Abstraction has has 647 places, 786 transitions, 23411 flow [2021-06-13 08:20:44,249 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) [2021-06-13 08:20:44,249 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:44,249 INFO L255 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] [2021-06-13 08:20:44,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-13 08:20:44,249 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:44,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:44,249 INFO L82 PathProgramCache]: Analyzing trace with hash 2065638274, now seen corresponding path program 86 times [2021-06-13 08:20:44,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:44,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171505772] [2021-06-13 08:20:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:44,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:44,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:44,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:44,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:44,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:44,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:44,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:44,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:44,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:44,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:44,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:44,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:44,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:44,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:44,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:44,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:44,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:44,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:44,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:44,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171505772] [2021-06-13 08:20:44,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171505772] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:44,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:44,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:20:44,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974551694] [2021-06-13 08:20:44,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:20:44,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:44,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:20:44,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:20:44,315 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:44,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 786 transitions, 23411 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) [2021-06-13 08:20:44,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:44,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:44,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:45,614 INFO L129 PetriNetUnfolder]: 1279/3107 cut-off events. [2021-06-13 08:20:45,614 INFO L130 PetriNetUnfolder]: For 232646/232646 co-relation queries the response was YES. [2021-06-13 08:20:45,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40436 conditions, 3107 events. 1279/3107 cut-off events. For 232646/232646 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 27410 event pairs, 76 based on Foata normal form. 1/3108 useless extension candidates. Maximal degree in co-relation 40067. Up to 1947 conditions per place. [2021-06-13 08:20:45,704 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 721 selfloop transitions, 96 changer transitions 14/839 dead transitions. [2021-06-13 08:20:45,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 839 transitions, 27325 flow [2021-06-13 08:20:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:20:45,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:20:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:20:45,705 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:20:45,705 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:20:45,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:20:45,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:45,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:20:45,705 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) [2021-06-13 08:20:45,706 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) [2021-06-13 08:20:45,706 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) [2021-06-13 08:20:45,706 INFO L185 Difference]: Start difference. First operand has 647 places, 786 transitions, 23411 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:20:45,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 839 transitions, 27325 flow [2021-06-13 08:20:47,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 839 transitions, 26788 flow, removed 146 selfloop flow, removed 11 redundant places. [2021-06-13 08:20:47,986 INFO L241 Difference]: Finished difference. Result has 649 places, 799 transitions, 24254 flow [2021-06-13 08:20:47,987 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=22899, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24254, PETRI_PLACES=649, PETRI_TRANSITIONS=799} [2021-06-13 08:20:47,987 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 610 predicate places. [2021-06-13 08:20:47,987 INFO L482 AbstractCegarLoop]: Abstraction has has 649 places, 799 transitions, 24254 flow [2021-06-13 08:20:47,987 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) [2021-06-13 08:20:47,987 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:47,987 INFO L255 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] [2021-06-13 08:20:47,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-13 08:20:47,988 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:47,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:47,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1890074530, now seen corresponding path program 87 times [2021-06-13 08:20:47,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:47,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145612190] [2021-06-13 08:20:47,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:48,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:48,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:48,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:48,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:48,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:48,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:48,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:48,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:48,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:48,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:48,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:48,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:48,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:48,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:48,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:48,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:48,076 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:48,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:48,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:48,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:48,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145612190] [2021-06-13 08:20:48,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145612190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:48,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:48,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:20:48,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967084659] [2021-06-13 08:20:48,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:20:48,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:48,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:20:48,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:20:48,080 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:48,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 799 transitions, 24254 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) [2021-06-13 08:20:48,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:48,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:48,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:49,413 INFO L129 PetriNetUnfolder]: 1278/3103 cut-off events. [2021-06-13 08:20:49,414 INFO L130 PetriNetUnfolder]: For 234449/234449 co-relation queries the response was YES. [2021-06-13 08:20:49,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40623 conditions, 3103 events. 1278/3103 cut-off events. For 234449/234449 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 27425 event pairs, 78 based on Foata normal form. 1/3104 useless extension candidates. Maximal degree in co-relation 40252. Up to 1883 conditions per place. [2021-06-13 08:20:49,498 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 687 selfloop transitions, 137 changer transitions 9/841 dead transitions. [2021-06-13 08:20:49,498 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 841 transitions, 27616 flow [2021-06-13 08:20:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:20:49,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:20:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-06-13 08:20:49,499 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-06-13 08:20:49,499 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-06-13 08:20:49,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-06-13 08:20:49,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:49,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-06-13 08:20:49,499 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) [2021-06-13 08:20:49,500 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) [2021-06-13 08:20:49,500 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) [2021-06-13 08:20:49,500 INFO L185 Difference]: Start difference. First operand has 649 places, 799 transitions, 24254 flow. Second operand 10 states and 329 transitions. [2021-06-13 08:20:49,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 841 transitions, 27616 flow [2021-06-13 08:20:51,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 841 transitions, 27058 flow, removed 255 selfloop flow, removed 3 redundant places. [2021-06-13 08:20:51,931 INFO L241 Difference]: Finished difference. Result has 659 places, 804 transitions, 24733 flow [2021-06-13 08:20:51,932 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=23696, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24733, PETRI_PLACES=659, PETRI_TRANSITIONS=804} [2021-06-13 08:20:51,932 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 620 predicate places. [2021-06-13 08:20:51,932 INFO L482 AbstractCegarLoop]: Abstraction has has 659 places, 804 transitions, 24733 flow [2021-06-13 08:20:51,932 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) [2021-06-13 08:20:51,932 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:51,932 INFO L255 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] [2021-06-13 08:20:51,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-13 08:20:51,932 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:51,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:51,932 INFO L82 PathProgramCache]: Analyzing trace with hash 459887312, now seen corresponding path program 88 times [2021-06-13 08:20:51,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:51,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996283290] [2021-06-13 08:20:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:51,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:51,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:51,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:51,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:51,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:51,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:51,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:51,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:51,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:51,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:51,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:51,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:51,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:51,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:51,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:51,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:52,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:52,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:52,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:52,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996283290] [2021-06-13 08:20:52,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996283290] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:52,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:52,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:20:52,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721229524] [2021-06-13 08:20:52,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:20:52,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:52,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:20:52,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:20:52,003 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:52,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 804 transitions, 24733 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) [2021-06-13 08:20:52,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:52,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:52,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:53,452 INFO L129 PetriNetUnfolder]: 1279/3110 cut-off events. [2021-06-13 08:20:53,452 INFO L130 PetriNetUnfolder]: For 237541/237541 co-relation queries the response was YES. [2021-06-13 08:20:53,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41185 conditions, 3110 events. 1279/3110 cut-off events. For 237541/237541 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 27487 event pairs, 80 based on Foata normal form. 1/3111 useless extension candidates. Maximal degree in co-relation 40810. Up to 1954 conditions per place. [2021-06-13 08:20:53,529 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 724 selfloop transitions, 105 changer transitions 9/846 dead transitions. [2021-06-13 08:20:53,529 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 846 transitions, 28081 flow [2021-06-13 08:20:53,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:20:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:20:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-06-13 08:20:53,530 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-06-13 08:20:53,530 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-06-13 08:20:53,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-06-13 08:20:53,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:53,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-06-13 08:20:53,530 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) [2021-06-13 08:20:53,530 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) [2021-06-13 08:20:53,531 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) [2021-06-13 08:20:53,531 INFO L185 Difference]: Start difference. First operand has 659 places, 804 transitions, 24733 flow. Second operand 10 states and 329 transitions. [2021-06-13 08:20:53,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 846 transitions, 28081 flow [2021-06-13 08:20:55,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 846 transitions, 27582 flow, removed 189 selfloop flow, removed 5 redundant places. [2021-06-13 08:20:55,900 INFO L241 Difference]: Finished difference. Result has 669 places, 809 transitions, 25227 flow [2021-06-13 08:20:55,901 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=24244, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25227, PETRI_PLACES=669, PETRI_TRANSITIONS=809} [2021-06-13 08:20:55,901 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 630 predicate places. [2021-06-13 08:20:55,901 INFO L482 AbstractCegarLoop]: Abstraction has has 669 places, 809 transitions, 25227 flow [2021-06-13 08:20:55,901 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) [2021-06-13 08:20:55,901 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:20:55,901 INFO L255 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] [2021-06-13 08:20:55,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-13 08:20:55,902 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:20:55,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:20:55,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1610015636, now seen corresponding path program 89 times [2021-06-13 08:20:55,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:20:55,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137954771] [2021-06-13 08:20:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:20:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:20:55,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:55,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:55,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:55,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:55,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:55,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:55,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:55,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:55,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:55,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:55,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:55,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:20:55,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:55,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:20:55,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:20:55,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:20:55,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:20:55,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:20:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:20:55,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:20:55,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137954771] [2021-06-13 08:20:55,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137954771] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:20:55,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:20:55,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:20:55,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634349493] [2021-06-13 08:20:55,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:20:55,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:20:55,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:20:55,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:20:55,978 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:20:55,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 809 transitions, 25227 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) [2021-06-13 08:20:55,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:20:55,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:20:55,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:20:57,635 INFO L129 PetriNetUnfolder]: 1283/3130 cut-off events. [2021-06-13 08:20:57,636 INFO L130 PetriNetUnfolder]: For 252873/252873 co-relation queries the response was YES. [2021-06-13 08:20:57,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41986 conditions, 3130 events. 1283/3130 cut-off events. For 252873/252873 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 27766 event pairs, 76 based on Foata normal form. 1/3131 useless extension candidates. Maximal degree in co-relation 41604. Up to 2017 conditions per place. [2021-06-13 08:20:57,714 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 753 selfloop transitions, 89 changer transitions 12/862 dead transitions. [2021-06-13 08:20:57,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 862 transitions, 29317 flow [2021-06-13 08:20:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:20:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:20:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-06-13 08:20:57,715 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-06-13 08:20:57,715 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-06-13 08:20:57,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-06-13 08:20:57,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:20:57,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-06-13 08:20:57,716 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) [2021-06-13 08:20:57,716 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) [2021-06-13 08:20:57,717 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) [2021-06-13 08:20:57,717 INFO L185 Difference]: Start difference. First operand has 669 places, 809 transitions, 25227 flow. Second operand 10 states and 329 transitions. [2021-06-13 08:20:57,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 862 transitions, 29317 flow [2021-06-13 08:21:00,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 862 transitions, 28795 flow, removed 231 selfloop flow, removed 4 redundant places. [2021-06-13 08:21:00,285 INFO L241 Difference]: Finished difference. Result has 680 places, 822 transitions, 26420 flow [2021-06-13 08:21:00,286 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=24729, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26420, PETRI_PLACES=680, PETRI_TRANSITIONS=822} [2021-06-13 08:21:00,286 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 641 predicate places. [2021-06-13 08:21:00,286 INFO L482 AbstractCegarLoop]: Abstraction has has 680 places, 822 transitions, 26420 flow [2021-06-13 08:21:00,287 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) [2021-06-13 08:21:00,287 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:00,287 INFO L255 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] [2021-06-13 08:21:00,287 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-13 08:21:00,287 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:00,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:00,287 INFO L82 PathProgramCache]: Analyzing trace with hash 111362882, now seen corresponding path program 90 times [2021-06-13 08:21:00,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:00,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270270115] [2021-06-13 08:21:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:00,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:00,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:00,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:00,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:00,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:00,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:00,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:00,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:00,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:00,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:00,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:00,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:00,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:00,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:00,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:00,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:00,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:00,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:00,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:00,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270270115] [2021-06-13 08:21:00,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270270115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:00,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:00,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:00,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692618778] [2021-06-13 08:21:00,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:00,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:00,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:00,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:00,364 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:00,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 822 transitions, 26420 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) [2021-06-13 08:21:00,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:00,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:00,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:02,083 INFO L129 PetriNetUnfolder]: 1281/3120 cut-off events. [2021-06-13 08:21:02,083 INFO L130 PetriNetUnfolder]: For 254504/254504 co-relation queries the response was YES. [2021-06-13 08:21:02,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42301 conditions, 3120 events. 1281/3120 cut-off events. For 254504/254504 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 27604 event pairs, 83 based on Foata normal form. 1/3121 useless extension candidates. Maximal degree in co-relation 41914. Up to 1942 conditions per place. [2021-06-13 08:21:02,154 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 697 selfloop transitions, 145 changer transitions 10/860 dead transitions. [2021-06-13 08:21:02,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 860 transitions, 29726 flow [2021-06-13 08:21:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:21:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:21:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-06-13 08:21:02,155 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-06-13 08:21:02,155 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-06-13 08:21:02,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-06-13 08:21:02,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:02,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-06-13 08:21:02,156 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) [2021-06-13 08:21:02,156 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) [2021-06-13 08:21:02,156 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) [2021-06-13 08:21:02,156 INFO L185 Difference]: Start difference. First operand has 680 places, 822 transitions, 26420 flow. Second operand 10 states and 328 transitions. [2021-06-13 08:21:02,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 860 transitions, 29726 flow [2021-06-13 08:21:04,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 860 transitions, 28621 flow, removed 526 selfloop flow, removed 5 redundant places. [2021-06-13 08:21:04,895 INFO L241 Difference]: Finished difference. Result has 690 places, 823 transitions, 26388 flow [2021-06-13 08:21:04,895 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=25315, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=26388, PETRI_PLACES=690, PETRI_TRANSITIONS=823} [2021-06-13 08:21:04,895 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 651 predicate places. [2021-06-13 08:21:04,895 INFO L482 AbstractCegarLoop]: Abstraction has has 690 places, 823 transitions, 26388 flow [2021-06-13 08:21:04,895 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) [2021-06-13 08:21:04,895 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:04,895 INFO L255 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] [2021-06-13 08:21:04,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-13 08:21:04,896 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:04,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:04,896 INFO L82 PathProgramCache]: Analyzing trace with hash -724659902, now seen corresponding path program 91 times [2021-06-13 08:21:04,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:04,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018957118] [2021-06-13 08:21:04,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:04,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:04,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:04,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:04,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:04,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:04,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:04,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:04,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:04,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:04,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:04,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:04,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:04,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:04,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:04,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:04,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:04,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:04,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:04,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:04,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018957118] [2021-06-13 08:21:04,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018957118] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:04,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:04,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:04,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748783397] [2021-06-13 08:21:04,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:04,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:04,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:04,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:04,971 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:04,971 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 823 transitions, 26388 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) [2021-06-13 08:21:04,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:04,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:04,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:06,352 INFO L129 PetriNetUnfolder]: 1281/3128 cut-off events. [2021-06-13 08:21:06,352 INFO L130 PetriNetUnfolder]: For 262417/262417 co-relation queries the response was YES. [2021-06-13 08:21:06,604 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42879 conditions, 3128 events. 1281/3128 cut-off events. For 262417/262417 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 27760 event pairs, 65 based on Foata normal form. 1/3129 useless extension candidates. Maximal degree in co-relation 42488. Up to 2078 conditions per place. [2021-06-13 08:21:06,619 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 770 selfloop transitions, 79 changer transitions 6/863 dead transitions. [2021-06-13 08:21:06,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 863 transitions, 30388 flow [2021-06-13 08:21:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:21:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:21:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2021-06-13 08:21:06,619 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-06-13 08:21:06,620 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2021-06-13 08:21:06,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2021-06-13 08:21:06,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:06,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2021-06-13 08:21:06,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:06,620 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) [2021-06-13 08:21:06,620 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) [2021-06-13 08:21:06,620 INFO L185 Difference]: Start difference. First operand has 690 places, 823 transitions, 26388 flow. Second operand 10 states and 325 transitions. [2021-06-13 08:21:06,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 863 transitions, 30388 flow [2021-06-13 08:21:09,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 863 transitions, 29725 flow, removed 254 selfloop flow, removed 7 redundant places. [2021-06-13 08:21:09,546 INFO L241 Difference]: Finished difference. Result has 693 places, 833 transitions, 27325 flow [2021-06-13 08:21:09,546 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=25741, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=750, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27325, PETRI_PLACES=693, PETRI_TRANSITIONS=833} [2021-06-13 08:21:09,546 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 654 predicate places. [2021-06-13 08:21:09,546 INFO L482 AbstractCegarLoop]: Abstraction has has 693 places, 833 transitions, 27325 flow [2021-06-13 08:21:09,547 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) [2021-06-13 08:21:09,547 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:09,547 INFO L255 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] [2021-06-13 08:21:09,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-13 08:21:09,547 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:09,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:09,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1015189828, now seen corresponding path program 92 times [2021-06-13 08:21:09,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:09,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901950171] [2021-06-13 08:21:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:09,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:09,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:09,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:09,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:09,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:09,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:09,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:09,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:09,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:09,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:09,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:09,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:09,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:09,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:09,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:09,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:09,614 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:09,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:09,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:09,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901950171] [2021-06-13 08:21:09,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901950171] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:09,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:09,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:09,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143068709] [2021-06-13 08:21:09,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:09,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:09,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:09,617 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:09,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 833 transitions, 27325 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) [2021-06-13 08:21:09,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:09,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:09,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:11,193 INFO L129 PetriNetUnfolder]: 1292/3149 cut-off events. [2021-06-13 08:21:11,193 INFO L130 PetriNetUnfolder]: For 287455/287455 co-relation queries the response was YES. [2021-06-13 08:21:11,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43988 conditions, 3149 events. 1292/3149 cut-off events. For 287455/287455 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 27990 event pairs, 59 based on Foata normal form. 1/3150 useless extension candidates. Maximal degree in co-relation 43598. Up to 2160 conditions per place. [2021-06-13 08:21:11,272 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 813 selfloop transitions, 56 changer transitions 4/881 dead transitions. [2021-06-13 08:21:11,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 881 transitions, 32507 flow [2021-06-13 08:21:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:21:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:21:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2021-06-13 08:21:11,273 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-06-13 08:21:11,273 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2021-06-13 08:21:11,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2021-06-13 08:21:11,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:11,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2021-06-13 08:21:11,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:11,274 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) [2021-06-13 08:21:11,274 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) [2021-06-13 08:21:11,274 INFO L185 Difference]: Start difference. First operand has 693 places, 833 transitions, 27325 flow. Second operand 10 states and 325 transitions. [2021-06-13 08:21:11,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 881 transitions, 32507 flow [2021-06-13 08:21:14,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 881 transitions, 30381 flow, removed 1034 selfloop flow, removed 3 redundant places. [2021-06-13 08:21:14,442 INFO L241 Difference]: Finished difference. Result has 703 places, 853 transitions, 28182 flow [2021-06-13 08:21:14,443 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=26103, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=785, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28182, PETRI_PLACES=703, PETRI_TRANSITIONS=853} [2021-06-13 08:21:14,443 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 664 predicate places. [2021-06-13 08:21:14,443 INFO L482 AbstractCegarLoop]: Abstraction has has 703 places, 853 transitions, 28182 flow [2021-06-13 08:21:14,443 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) [2021-06-13 08:21:14,443 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:14,443 INFO L255 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] [2021-06-13 08:21:14,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-13 08:21:14,443 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:14,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:14,443 INFO L82 PathProgramCache]: Analyzing trace with hash -387807322, now seen corresponding path program 93 times [2021-06-13 08:21:14,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:14,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153436457] [2021-06-13 08:21:14,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:14,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:14,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:14,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:14,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:14,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:14,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:14,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:14,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:14,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:14,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:14,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:14,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:14,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:14,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:14,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:14,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:14,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:14,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:14,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:14,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153436457] [2021-06-13 08:21:14,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153436457] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:14,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:14,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:14,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747847274] [2021-06-13 08:21:14,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:14,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:14,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:14,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:14,525 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:14,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 853 transitions, 28182 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) [2021-06-13 08:21:14,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:14,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:14,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:16,047 INFO L129 PetriNetUnfolder]: 1301/3158 cut-off events. [2021-06-13 08:21:16,047 INFO L130 PetriNetUnfolder]: For 297429/297429 co-relation queries the response was YES. [2021-06-13 08:21:16,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44261 conditions, 3158 events. 1301/3158 cut-off events. For 297429/297429 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 27999 event pairs, 73 based on Foata normal form. 1/3159 useless extension candidates. Maximal degree in co-relation 43866. Up to 2046 conditions per place. [2021-06-13 08:21:16,124 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 800 selfloop transitions, 82 changer transitions 8/898 dead transitions. [2021-06-13 08:21:16,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 898 transitions, 32746 flow [2021-06-13 08:21:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:21:16,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:21:16,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2021-06-13 08:21:16,125 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7431818181818182 [2021-06-13 08:21:16,125 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 327 transitions. [2021-06-13 08:21:16,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 327 transitions. [2021-06-13 08:21:16,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:16,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 327 transitions. [2021-06-13 08:21:16,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:16,126 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) [2021-06-13 08:21:16,126 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) [2021-06-13 08:21:16,126 INFO L185 Difference]: Start difference. First operand has 703 places, 853 transitions, 28182 flow. Second operand 10 states and 327 transitions. [2021-06-13 08:21:16,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 898 transitions, 32746 flow [2021-06-13 08:21:19,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 898 transitions, 30957 flow, removed 873 selfloop flow, removed 4 redundant places. [2021-06-13 08:21:19,128 INFO L241 Difference]: Finished difference. Result has 710 places, 864 transitions, 28282 flow [2021-06-13 08:21:19,129 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=26765, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28282, PETRI_PLACES=710, PETRI_TRANSITIONS=864} [2021-06-13 08:21:19,129 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 671 predicate places. [2021-06-13 08:21:19,129 INFO L482 AbstractCegarLoop]: Abstraction has has 710 places, 864 transitions, 28282 flow [2021-06-13 08:21:19,129 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) [2021-06-13 08:21:19,129 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:19,129 INFO L255 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] [2021-06-13 08:21:19,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-13 08:21:19,129 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:19,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:19,130 INFO L82 PathProgramCache]: Analyzing trace with hash 294291414, now seen corresponding path program 94 times [2021-06-13 08:21:19,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:19,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341330479] [2021-06-13 08:21:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:19,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:19,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:19,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:19,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:19,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:19,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:19,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:19,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:19,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:19,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:19,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:19,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:19,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:19,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:19,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:19,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:19,180 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:19,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:19,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:19,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341330479] [2021-06-13 08:21:19,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341330479] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:19,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:19,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:21:19,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090130224] [2021-06-13 08:21:19,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:21:19,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:19,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:21:19,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:21:19,184 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:19,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 864 transitions, 28282 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) [2021-06-13 08:21:19,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:19,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:19,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:20,665 INFO L129 PetriNetUnfolder]: 1304/3169 cut-off events. [2021-06-13 08:21:20,665 INFO L130 PetriNetUnfolder]: For 289239/289239 co-relation queries the response was YES. [2021-06-13 08:21:20,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44064 conditions, 3169 events. 1304/3169 cut-off events. For 289239/289239 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 28113 event pairs, 51 based on Foata normal form. 1/3170 useless extension candidates. Maximal degree in co-relation 43667. Up to 2212 conditions per place. [2021-06-13 08:21:20,747 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 844 selfloop transitions, 42 changer transitions 3/897 dead transitions. [2021-06-13 08:21:20,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 897 transitions, 31916 flow [2021-06-13 08:21:20,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:21:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:21:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 264 transitions. [2021-06-13 08:21:20,748 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:21:20,748 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 264 transitions. [2021-06-13 08:21:20,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 264 transitions. [2021-06-13 08:21:20,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:20,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 264 transitions. [2021-06-13 08:21:20,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.0) internal successors, (264), 8 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:20,749 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) [2021-06-13 08:21:20,749 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) [2021-06-13 08:21:20,749 INFO L185 Difference]: Start difference. First operand has 710 places, 864 transitions, 28282 flow. Second operand 8 states and 264 transitions. [2021-06-13 08:21:20,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 897 transitions, 31916 flow [2021-06-13 08:21:23,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 897 transitions, 30657 flow, removed 624 selfloop flow, removed 1 redundant places. [2021-06-13 08:21:23,605 INFO L241 Difference]: Finished difference. Result has 718 places, 873 transitions, 28481 flow [2021-06-13 08:21:23,606 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=27031, PETRI_DIFFERENCE_MINUEND_PLACES=709, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=827, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28481, PETRI_PLACES=718, PETRI_TRANSITIONS=873} [2021-06-13 08:21:23,606 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 679 predicate places. [2021-06-13 08:21:23,606 INFO L482 AbstractCegarLoop]: Abstraction has has 718 places, 873 transitions, 28481 flow [2021-06-13 08:21:23,606 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) [2021-06-13 08:21:23,606 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:23,606 INFO L255 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] [2021-06-13 08:21:23,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-13 08:21:23,607 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:23,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:23,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1499521318, now seen corresponding path program 95 times [2021-06-13 08:21:23,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:23,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924274161] [2021-06-13 08:21:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:23,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:23,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:23,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:23,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:23,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:23,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:23,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:23,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:23,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:23,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:23,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:23,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:23,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:23,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:23,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:23,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:23,680 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:23,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:23,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:23,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924274161] [2021-06-13 08:21:23,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924274161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:23,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:23,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:23,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283862342] [2021-06-13 08:21:23,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:23,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:23,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:23,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:23,684 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:23,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 873 transitions, 28481 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) [2021-06-13 08:21:23,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:23,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:23,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:25,290 INFO L129 PetriNetUnfolder]: 1311/3192 cut-off events. [2021-06-13 08:21:25,290 INFO L130 PetriNetUnfolder]: For 302682/302682 co-relation queries the response was YES. [2021-06-13 08:21:25,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44583 conditions, 3192 events. 1311/3192 cut-off events. For 302682/302682 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 28363 event pairs, 62 based on Foata normal form. 1/3193 useless extension candidates. Maximal degree in co-relation 44182. Up to 2107 conditions per place. [2021-06-13 08:21:25,372 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 803 selfloop transitions, 96 changer transitions 6/913 dead transitions. [2021-06-13 08:21:25,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 727 places, 913 transitions, 32695 flow [2021-06-13 08:21:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:21:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:21:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2021-06-13 08:21:25,373 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-06-13 08:21:25,373 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2021-06-13 08:21:25,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2021-06-13 08:21:25,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:25,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2021-06-13 08:21:25,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:25,374 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) [2021-06-13 08:21:25,375 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) [2021-06-13 08:21:25,375 INFO L185 Difference]: Start difference. First operand has 718 places, 873 transitions, 28481 flow. Second operand 10 states and 325 transitions. [2021-06-13 08:21:25,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 727 places, 913 transitions, 32695 flow [2021-06-13 08:21:28,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 913 transitions, 31647 flow, removed 514 selfloop flow, removed 2 redundant places. [2021-06-13 08:21:28,357 INFO L241 Difference]: Finished difference. Result has 726 places, 883 transitions, 29128 flow [2021-06-13 08:21:28,358 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=27433, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=873, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=783, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=29128, PETRI_PLACES=726, PETRI_TRANSITIONS=883} [2021-06-13 08:21:28,358 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 687 predicate places. [2021-06-13 08:21:28,358 INFO L482 AbstractCegarLoop]: Abstraction has has 726 places, 883 transitions, 29128 flow [2021-06-13 08:21:28,358 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) [2021-06-13 08:21:28,358 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:28,358 INFO L255 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] [2021-06-13 08:21:28,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-13 08:21:28,358 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:28,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:28,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2088340432, now seen corresponding path program 96 times [2021-06-13 08:21:28,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:28,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017514502] [2021-06-13 08:21:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:28,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:28,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:28,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:28,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:28,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:28,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:28,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:28,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:28,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:28,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:28,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:28,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:28,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:28,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:28,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:28,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:28,428 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:28,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:28,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:28,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:28,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017514502] [2021-06-13 08:21:28,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017514502] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:28,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:28,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:28,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188639863] [2021-06-13 08:21:28,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:28,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:28,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:28,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:28,432 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:28,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 883 transitions, 29128 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) [2021-06-13 08:21:28,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:28,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:28,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:30,021 INFO L129 PetriNetUnfolder]: 1323/3226 cut-off events. [2021-06-13 08:21:30,021 INFO L130 PetriNetUnfolder]: For 328611/328611 co-relation queries the response was YES. [2021-06-13 08:21:30,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45911 conditions, 3226 events. 1323/3226 cut-off events. For 328611/328611 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 28785 event pairs, 56 based on Foata normal form. 1/3227 useless extension candidates. Maximal degree in co-relation 45508. Up to 2173 conditions per place. [2021-06-13 08:21:30,102 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 831 selfloop transitions, 90 changer transitions 4/933 dead transitions. [2021-06-13 08:21:30,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 933 transitions, 34896 flow [2021-06-13 08:21:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:21:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:21:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2021-06-13 08:21:30,103 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-06-13 08:21:30,104 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2021-06-13 08:21:30,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2021-06-13 08:21:30,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:30,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2021-06-13 08:21:30,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:30,105 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) [2021-06-13 08:21:30,105 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) [2021-06-13 08:21:30,105 INFO L185 Difference]: Start difference. First operand has 726 places, 883 transitions, 29128 flow. Second operand 10 states and 325 transitions. [2021-06-13 08:21:30,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 933 transitions, 34896 flow [2021-06-13 08:21:33,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 933 transitions, 32509 flow, removed 1161 selfloop flow, removed 3 redundant places. [2021-06-13 08:21:33,181 INFO L241 Difference]: Finished difference. Result has 737 places, 905 transitions, 30297 flow [2021-06-13 08:21:33,181 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=27901, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=30297, PETRI_PLACES=737, PETRI_TRANSITIONS=905} [2021-06-13 08:21:33,182 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 698 predicate places. [2021-06-13 08:21:33,182 INFO L482 AbstractCegarLoop]: Abstraction has has 737 places, 905 transitions, 30297 flow [2021-06-13 08:21:33,182 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) [2021-06-13 08:21:33,182 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:33,182 INFO L255 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] [2021-06-13 08:21:33,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-13 08:21:33,182 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:33,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:33,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1360938810, now seen corresponding path program 97 times [2021-06-13 08:21:33,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:33,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464796586] [2021-06-13 08:21:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:33,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:33,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:33,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:33,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:33,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:33,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:33,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:33,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:33,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:33,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:33,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:33,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:33,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:33,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:33,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:33,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:33,242 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:33,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:33,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:33,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464796586] [2021-06-13 08:21:33,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464796586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:33,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:33,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:21:33,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385592921] [2021-06-13 08:21:33,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:21:33,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:33,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:21:33,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:21:33,245 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:33,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 905 transitions, 30297 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) [2021-06-13 08:21:33,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:33,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:33,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:34,811 INFO L129 PetriNetUnfolder]: 1331/3232 cut-off events. [2021-06-13 08:21:34,811 INFO L130 PetriNetUnfolder]: For 324747/324747 co-relation queries the response was YES. [2021-06-13 08:21:34,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45909 conditions, 3232 events. 1331/3232 cut-off events. For 324747/324747 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 28799 event pairs, 45 based on Foata normal form. 1/3233 useless extension candidates. Maximal degree in co-relation 45501. Up to 2237 conditions per place. [2021-06-13 08:21:34,891 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 865 selfloop transitions, 68 changer transitions 3/944 dead transitions. [2021-06-13 08:21:34,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 944 transitions, 34541 flow [2021-06-13 08:21:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:21:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:21:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2021-06-13 08:21:34,894 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7424242424242424 [2021-06-13 08:21:34,894 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 294 transitions. [2021-06-13 08:21:34,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 294 transitions. [2021-06-13 08:21:34,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:34,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 294 transitions. [2021-06-13 08:21:34,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.666666666666664) internal successors, (294), 9 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:34,895 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) [2021-06-13 08:21:34,895 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) [2021-06-13 08:21:34,895 INFO L185 Difference]: Start difference. First operand has 737 places, 905 transitions, 30297 flow. Second operand 9 states and 294 transitions. [2021-06-13 08:21:34,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 745 places, 944 transitions, 34541 flow [2021-06-13 08:21:37,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 944 transitions, 33089 flow, removed 702 selfloop flow, removed 3 redundant places. [2021-06-13 08:21:38,002 INFO L241 Difference]: Finished difference. Result has 744 places, 919 transitions, 30858 flow [2021-06-13 08:21:38,003 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=28845, PETRI_DIFFERENCE_MINUEND_PLACES=734, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=905, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=845, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=30858, PETRI_PLACES=744, PETRI_TRANSITIONS=919} [2021-06-13 08:21:38,003 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 705 predicate places. [2021-06-13 08:21:38,003 INFO L482 AbstractCegarLoop]: Abstraction has has 744 places, 919 transitions, 30858 flow [2021-06-13 08:21:38,003 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) [2021-06-13 08:21:38,003 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:38,003 INFO L255 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] [2021-06-13 08:21:38,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-13 08:21:38,004 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:38,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:38,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1020728364, now seen corresponding path program 98 times [2021-06-13 08:21:38,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:38,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344718811] [2021-06-13 08:21:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:38,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:38,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:38,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:38,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:38,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:38,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:38,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:38,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:38,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:38,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:38,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:38,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:38,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:38,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:38,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:38,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:38,076 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:38,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:38,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:38,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344718811] [2021-06-13 08:21:38,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344718811] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:38,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:38,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:38,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046780051] [2021-06-13 08:21:38,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:38,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:38,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:38,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:38,080 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:38,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 919 transitions, 30858 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) [2021-06-13 08:21:38,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:38,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:38,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:39,824 INFO L129 PetriNetUnfolder]: 1344/3261 cut-off events. [2021-06-13 08:21:39,825 INFO L130 PetriNetUnfolder]: For 331539/331539 co-relation queries the response was YES. [2021-06-13 08:21:39,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46522 conditions, 3261 events. 1344/3261 cut-off events. For 331539/331539 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 29153 event pairs, 65 based on Foata normal form. 1/3262 useless extension candidates. Maximal degree in co-relation 46112. Up to 2167 conditions per place. [2021-06-13 08:21:39,948 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 877 selfloop transitions, 77 changer transitions 8/970 dead transitions. [2021-06-13 08:21:39,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 970 transitions, 35496 flow [2021-06-13 08:21:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:21:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:21:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2021-06-13 08:21:39,949 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2021-06-13 08:21:39,949 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 326 transitions. [2021-06-13 08:21:39,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 326 transitions. [2021-06-13 08:21:39,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:39,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 326 transitions. [2021-06-13 08:21:39,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:39,951 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) [2021-06-13 08:21:39,951 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) [2021-06-13 08:21:39,951 INFO L185 Difference]: Start difference. First operand has 744 places, 919 transitions, 30858 flow. Second operand 10 states and 326 transitions. [2021-06-13 08:21:39,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 970 transitions, 35496 flow [2021-06-13 08:21:43,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 752 places, 970 transitions, 34074 flow, removed 707 selfloop flow, removed 1 redundant places. [2021-06-13 08:21:43,174 INFO L241 Difference]: Finished difference. Result has 757 places, 937 transitions, 31385 flow [2021-06-13 08:21:43,175 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=29436, PETRI_DIFFERENCE_MINUEND_PLACES=743, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=848, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31385, PETRI_PLACES=757, PETRI_TRANSITIONS=937} [2021-06-13 08:21:43,175 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 718 predicate places. [2021-06-13 08:21:43,175 INFO L482 AbstractCegarLoop]: Abstraction has has 757 places, 937 transitions, 31385 flow [2021-06-13 08:21:43,175 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) [2021-06-13 08:21:43,175 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:43,175 INFO L255 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] [2021-06-13 08:21:43,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-13 08:21:43,176 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:43,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:43,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1642205012, now seen corresponding path program 99 times [2021-06-13 08:21:43,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:43,176 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122046956] [2021-06-13 08:21:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:43,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:43,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:43,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:43,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:43,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:43,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:43,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:43,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:43,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:43,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:43,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:43,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:43,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:43,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:43,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:43,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:43,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:43,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:43,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:43,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122046956] [2021-06-13 08:21:43,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122046956] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:43,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:43,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:43,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428317171] [2021-06-13 08:21:43,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:43,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:43,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:43,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:43,261 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:43,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 937 transitions, 31385 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) [2021-06-13 08:21:43,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:43,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:43,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:45,023 INFO L129 PetriNetUnfolder]: 1349/3284 cut-off events. [2021-06-13 08:21:45,024 INFO L130 PetriNetUnfolder]: For 327113/327113 co-relation queries the response was YES. [2021-06-13 08:21:45,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46941 conditions, 3284 events. 1349/3284 cut-off events. For 327113/327113 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 29396 event pairs, 50 based on Foata normal form. 1/3285 useless extension candidates. Maximal degree in co-relation 46524. Up to 2267 conditions per place. [2021-06-13 08:21:45,111 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 912 selfloop transitions, 53 changer transitions 4/977 dead transitions. [2021-06-13 08:21:45,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 766 places, 977 transitions, 35803 flow [2021-06-13 08:21:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:21:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:21:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2021-06-13 08:21:45,112 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-06-13 08:21:45,112 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2021-06-13 08:21:45,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2021-06-13 08:21:45,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:45,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2021-06-13 08:21:45,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:45,113 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) [2021-06-13 08:21:45,113 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) [2021-06-13 08:21:45,113 INFO L185 Difference]: Start difference. First operand has 757 places, 937 transitions, 31385 flow. Second operand 10 states and 325 transitions. [2021-06-13 08:21:45,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 766 places, 977 transitions, 35803 flow [2021-06-13 08:21:48,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 977 transitions, 34424 flow, removed 646 selfloop flow, removed 6 redundant places. [2021-06-13 08:21:48,368 INFO L241 Difference]: Finished difference. Result has 761 places, 949 transitions, 31943 flow [2021-06-13 08:21:48,369 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=30006, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=892, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31943, PETRI_PLACES=761, PETRI_TRANSITIONS=949} [2021-06-13 08:21:48,369 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 722 predicate places. [2021-06-13 08:21:48,369 INFO L482 AbstractCegarLoop]: Abstraction has has 761 places, 949 transitions, 31943 flow [2021-06-13 08:21:48,369 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) [2021-06-13 08:21:48,369 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:48,369 INFO L255 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] [2021-06-13 08:21:48,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-13 08:21:48,370 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:48,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:48,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1558952136, now seen corresponding path program 100 times [2021-06-13 08:21:48,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:48,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158020914] [2021-06-13 08:21:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:48,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:48,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:48,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:48,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:48,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:48,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:48,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:48,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:48,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:48,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:48,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:48,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:48,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:48,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:48,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:48,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:48,456 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:48,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:48,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:48,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158020914] [2021-06-13 08:21:48,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158020914] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:48,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:48,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:21:48,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776632076] [2021-06-13 08:21:48,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:21:48,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:48,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:21:48,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:21:48,461 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:48,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 761 places, 949 transitions, 31943 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) [2021-06-13 08:21:48,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:48,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:48,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:50,229 INFO L129 PetriNetUnfolder]: 1355/3287 cut-off events. [2021-06-13 08:21:50,229 INFO L130 PetriNetUnfolder]: For 338623/338623 co-relation queries the response was YES. [2021-06-13 08:21:50,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47213 conditions, 3287 events. 1355/3287 cut-off events. For 338623/338623 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 29387 event pairs, 63 based on Foata normal form. 1/3288 useless extension candidates. Maximal degree in co-relation 46796. Up to 2184 conditions per place. [2021-06-13 08:21:50,319 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 887 selfloop transitions, 82 changer transitions 9/986 dead transitions. [2021-06-13 08:21:50,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 769 places, 986 transitions, 36201 flow [2021-06-13 08:21:50,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:21:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:21:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2021-06-13 08:21:50,320 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7449494949494949 [2021-06-13 08:21:50,320 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 295 transitions. [2021-06-13 08:21:50,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 295 transitions. [2021-06-13 08:21:50,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:50,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 295 transitions. [2021-06-13 08:21:50,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.77777777777778) internal successors, (295), 9 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:50,321 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) [2021-06-13 08:21:50,321 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) [2021-06-13 08:21:50,321 INFO L185 Difference]: Start difference. First operand has 761 places, 949 transitions, 31943 flow. Second operand 9 states and 295 transitions. [2021-06-13 08:21:50,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 769 places, 986 transitions, 36201 flow [2021-06-13 08:21:53,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 767 places, 986 transitions, 34804 flow, removed 691 selfloop flow, removed 2 redundant places. [2021-06-13 08:21:53,516 INFO L241 Difference]: Finished difference. Result has 771 places, 954 transitions, 31919 flow [2021-06-13 08:21:53,517 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=30546, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=871, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31919, PETRI_PLACES=771, PETRI_TRANSITIONS=954} [2021-06-13 08:21:53,517 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 732 predicate places. [2021-06-13 08:21:53,517 INFO L482 AbstractCegarLoop]: Abstraction has has 771 places, 954 transitions, 31919 flow [2021-06-13 08:21:53,517 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) [2021-06-13 08:21:53,517 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:53,517 INFO L255 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] [2021-06-13 08:21:53,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-13 08:21:53,517 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:53,518 INFO L82 PathProgramCache]: Analyzing trace with hash -105646876, now seen corresponding path program 101 times [2021-06-13 08:21:53,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:53,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448143440] [2021-06-13 08:21:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:53,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:53,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:53,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:53,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:53,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:53,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:53,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:53,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:53,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:53,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:53,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:53,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:53,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:53,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:53,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:53,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:53,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:53,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:53,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:53,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448143440] [2021-06-13 08:21:53,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448143440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:53,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:53,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:53,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45798178] [2021-06-13 08:21:53,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:53,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:53,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:53,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:53,588 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:53,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 954 transitions, 31919 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) [2021-06-13 08:21:53,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:53,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:53,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:21:55,253 INFO L129 PetriNetUnfolder]: 1359/3300 cut-off events. [2021-06-13 08:21:55,253 INFO L130 PetriNetUnfolder]: For 344940/344940 co-relation queries the response was YES. [2021-06-13 08:21:55,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47641 conditions, 3300 events. 1359/3300 cut-off events. For 344940/344940 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 29540 event pairs, 68 based on Foata normal form. 1/3301 useless extension candidates. Maximal degree in co-relation 47219. Up to 2120 conditions per place. [2021-06-13 08:21:55,353 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 854 selfloop transitions, 123 changer transitions 11/996 dead transitions. [2021-06-13 08:21:55,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 996 transitions, 36555 flow [2021-06-13 08:21:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:21:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:21:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2021-06-13 08:21:55,354 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2021-06-13 08:21:55,354 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 326 transitions. [2021-06-13 08:21:55,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 326 transitions. [2021-06-13 08:21:55,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:21:55,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 326 transitions. [2021-06-13 08:21:55,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:21:55,356 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) [2021-06-13 08:21:55,356 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) [2021-06-13 08:21:55,356 INFO L185 Difference]: Start difference. First operand has 771 places, 954 transitions, 31919 flow. Second operand 10 states and 326 transitions. [2021-06-13 08:21:55,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 996 transitions, 36555 flow [2021-06-13 08:21:58,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 775 places, 996 transitions, 35435 flow, removed 526 selfloop flow, removed 5 redundant places. [2021-06-13 08:21:58,940 INFO L241 Difference]: Finished difference. Result has 780 places, 960 transitions, 32586 flow [2021-06-13 08:21:58,940 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=30799, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=836, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32586, PETRI_PLACES=780, PETRI_TRANSITIONS=960} [2021-06-13 08:21:58,940 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 741 predicate places. [2021-06-13 08:21:58,941 INFO L482 AbstractCegarLoop]: Abstraction has has 780 places, 960 transitions, 32586 flow [2021-06-13 08:21:58,941 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) [2021-06-13 08:21:58,941 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:21:58,941 INFO L255 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] [2021-06-13 08:21:58,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-13 08:21:58,941 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:21:58,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:21:58,941 INFO L82 PathProgramCache]: Analyzing trace with hash 397870116, now seen corresponding path program 102 times [2021-06-13 08:21:58,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:21:58,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441237578] [2021-06-13 08:21:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:21:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:21:58,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:58,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:58,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:58,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:58,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:58,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:58,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:58,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:58,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:58,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:21:58,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:58,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:21:58,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:58,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:21:59,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:21:59,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:21:59,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:21:59,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:21:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:21:59,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:21:59,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441237578] [2021-06-13 08:21:59,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441237578] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:21:59,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:21:59,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:21:59,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043519910] [2021-06-13 08:21:59,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:21:59,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:21:59,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:21:59,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:21:59,023 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:21:59,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 960 transitions, 32586 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) [2021-06-13 08:21:59,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:21:59,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:21:59,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:00,744 INFO L129 PetriNetUnfolder]: 1362/3315 cut-off events. [2021-06-13 08:22:00,745 INFO L130 PetriNetUnfolder]: For 351104/351104 co-relation queries the response was YES. [2021-06-13 08:22:00,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48246 conditions, 3315 events. 1362/3315 cut-off events. For 351104/351104 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 29738 event pairs, 50 based on Foata normal form. 1/3316 useless extension candidates. Maximal degree in co-relation 47819. Up to 2290 conditions per place. [2021-06-13 08:22:00,839 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 936 selfloop transitions, 52 changer transitions 4/1000 dead transitions. [2021-06-13 08:22:00,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 1000 transitions, 37196 flow [2021-06-13 08:22:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:22:00,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:22:00,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2021-06-13 08:22:00,840 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-06-13 08:22:00,840 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2021-06-13 08:22:00,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2021-06-13 08:22:00,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:00,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2021-06-13 08:22:00,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:00,841 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) [2021-06-13 08:22:00,841 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) [2021-06-13 08:22:00,841 INFO L185 Difference]: Start difference. First operand has 780 places, 960 transitions, 32586 flow. Second operand 10 states and 325 transitions. [2021-06-13 08:22:00,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 1000 transitions, 37196 flow [2021-06-13 08:22:04,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 1000 transitions, 35881 flow, removed 615 selfloop flow, removed 4 redundant places. [2021-06-13 08:22:04,346 INFO L241 Difference]: Finished difference. Result has 786 places, 972 transitions, 33326 flow [2021-06-13 08:22:04,346 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31303, PETRI_DIFFERENCE_MINUEND_PLACES=776, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=33326, PETRI_PLACES=786, PETRI_TRANSITIONS=972} [2021-06-13 08:22:04,347 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 747 predicate places. [2021-06-13 08:22:04,347 INFO L482 AbstractCegarLoop]: Abstraction has has 786 places, 972 transitions, 33326 flow [2021-06-13 08:22:04,347 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) [2021-06-13 08:22:04,347 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:04,347 INFO L255 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] [2021-06-13 08:22:04,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-13 08:22:04,347 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:04,347 INFO L82 PathProgramCache]: Analyzing trace with hash -10839520, now seen corresponding path program 103 times [2021-06-13 08:22:04,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:04,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138105048] [2021-06-13 08:22:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:04,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:04,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:04,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:04,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:04,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:04,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:04,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:04,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:04,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:04,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:22:04,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:04,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:04,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:04,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:04,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:04,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:04,420 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:22:04,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:22:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:04,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:04,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138105048] [2021-06-13 08:22:04,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138105048] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:04,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:04,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:22:04,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820272334] [2021-06-13 08:22:04,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:22:04,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:04,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:22:04,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:22:04,423 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:22:04,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 786 places, 972 transitions, 33326 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) [2021-06-13 08:22:04,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:04,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:22:04,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:06,133 INFO L129 PetriNetUnfolder]: 1371/3338 cut-off events. [2021-06-13 08:22:06,133 INFO L130 PetriNetUnfolder]: For 353316/353316 co-relation queries the response was YES. [2021-06-13 08:22:06,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48836 conditions, 3338 events. 1371/3338 cut-off events. For 353316/353316 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 29971 event pairs, 65 based on Foata normal form. 1/3339 useless extension candidates. Maximal degree in co-relation 48408. Up to 2217 conditions per place. [2021-06-13 08:22:06,227 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 932 selfloop transitions, 73 changer transitions 7/1020 dead transitions. [2021-06-13 08:22:06,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 1020 transitions, 38289 flow [2021-06-13 08:22:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:22:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:22:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2021-06-13 08:22:06,228 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7431818181818182 [2021-06-13 08:22:06,228 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 327 transitions. [2021-06-13 08:22:06,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 327 transitions. [2021-06-13 08:22:06,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:06,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 327 transitions. [2021-06-13 08:22:06,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:06,228 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) [2021-06-13 08:22:06,229 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) [2021-06-13 08:22:06,229 INFO L185 Difference]: Start difference. First operand has 786 places, 972 transitions, 33326 flow. Second operand 10 states and 327 transitions. [2021-06-13 08:22:06,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 795 places, 1020 transitions, 38289 flow [2021-06-13 08:22:09,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 1020 transitions, 36743 flow, removed 734 selfloop flow, removed 6 redundant places. [2021-06-13 08:22:09,940 INFO L241 Difference]: Finished difference. Result has 793 places, 987 transitions, 34092 flow [2021-06-13 08:22:09,940 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31794, PETRI_DIFFERENCE_MINUEND_PLACES=780, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=907, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=34092, PETRI_PLACES=793, PETRI_TRANSITIONS=987} [2021-06-13 08:22:09,940 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 754 predicate places. [2021-06-13 08:22:09,940 INFO L482 AbstractCegarLoop]: Abstraction has has 793 places, 987 transitions, 34092 flow [2021-06-13 08:22:09,940 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) [2021-06-13 08:22:09,940 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:09,940 INFO L255 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] [2021-06-13 08:22:09,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-13 08:22:09,941 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:09,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:09,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1730065632, now seen corresponding path program 104 times [2021-06-13 08:22:09,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:09,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90232396] [2021-06-13 08:22:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:09,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:09,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:09,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:09,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:09,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:09,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:09,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:09,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:09,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:09,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:22:09,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:09,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:09,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:09,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:09,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:09,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:10,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:22:10,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:22:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:10,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:10,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90232396] [2021-06-13 08:22:10,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90232396] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:10,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:10,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:22:10,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518813352] [2021-06-13 08:22:10,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:22:10,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:10,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:22:10,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:22:10,011 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:22:10,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 793 places, 987 transitions, 34092 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) [2021-06-13 08:22:10,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:10,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:22:10,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:11,713 INFO L129 PetriNetUnfolder]: 1376/3346 cut-off events. [2021-06-13 08:22:11,713 INFO L130 PetriNetUnfolder]: For 356094/356094 co-relation queries the response was YES. [2021-06-13 08:22:11,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49276 conditions, 3346 events. 1376/3346 cut-off events. For 356094/356094 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 30061 event pairs, 72 based on Foata normal form. 1/3347 useless extension candidates. Maximal degree in co-relation 48846. Up to 2110 conditions per place. [2021-06-13 08:22:11,812 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 888 selfloop transitions, 118 changer transitions 15/1029 dead transitions. [2021-06-13 08:22:11,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 802 places, 1029 transitions, 38848 flow [2021-06-13 08:22:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:22:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:22:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2021-06-13 08:22:11,813 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7431818181818182 [2021-06-13 08:22:11,813 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 327 transitions. [2021-06-13 08:22:11,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 327 transitions. [2021-06-13 08:22:11,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:11,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 327 transitions. [2021-06-13 08:22:11,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:11,814 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) [2021-06-13 08:22:11,814 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) [2021-06-13 08:22:11,814 INFO L185 Difference]: Start difference. First operand has 793 places, 987 transitions, 34092 flow. Second operand 10 states and 327 transitions. [2021-06-13 08:22:11,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 802 places, 1029 transitions, 38848 flow [2021-06-13 08:22:15,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 801 places, 1029 transitions, 37372 flow, removed 732 selfloop flow, removed 1 redundant places. [2021-06-13 08:22:15,547 INFO L241 Difference]: Finished difference. Result has 806 places, 988 transitions, 34136 flow [2021-06-13 08:22:15,548 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=32616, PETRI_DIFFERENCE_MINUEND_PLACES=792, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=987, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=874, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=34136, PETRI_PLACES=806, PETRI_TRANSITIONS=988} [2021-06-13 08:22:15,548 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 767 predicate places. [2021-06-13 08:22:15,548 INFO L482 AbstractCegarLoop]: Abstraction has has 806 places, 988 transitions, 34136 flow [2021-06-13 08:22:15,548 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) [2021-06-13 08:22:15,548 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:15,548 INFO L255 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] [2021-06-13 08:22:15,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-13 08:22:15,548 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:15,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:15,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1790313060, now seen corresponding path program 105 times [2021-06-13 08:22:15,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:15,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362833687] [2021-06-13 08:22:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:15,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:15,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:15,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:15,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:15,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:15,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:15,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:15,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:15,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:15,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:22:15,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:15,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:15,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:15,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:15,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:15,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:15,630 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:22:15,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:22:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:15,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:15,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362833687] [2021-06-13 08:22:15,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362833687] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:15,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:15,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:22:15,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486705093] [2021-06-13 08:22:15,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:22:15,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:15,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:22:15,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:22:15,633 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:22:15,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 988 transitions, 34136 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) [2021-06-13 08:22:15,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:15,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:22:15,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:17,493 INFO L129 PetriNetUnfolder]: 1376/3356 cut-off events. [2021-06-13 08:22:17,493 INFO L130 PetriNetUnfolder]: For 365666/365666 co-relation queries the response was YES. [2021-06-13 08:22:17,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49691 conditions, 3356 events. 1376/3356 cut-off events. For 365666/365666 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 30210 event pairs, 58 based on Foata normal form. 1/3357 useless extension candidates. Maximal degree in co-relation 49254. Up to 2285 conditions per place. [2021-06-13 08:22:17,592 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 967 selfloop transitions, 48 changer transitions 7/1030 dead transitions. [2021-06-13 08:22:17,593 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 815 places, 1030 transitions, 38936 flow [2021-06-13 08:22:17,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:22:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:22:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2021-06-13 08:22:17,593 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2021-06-13 08:22:17,593 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 326 transitions. [2021-06-13 08:22:17,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 326 transitions. [2021-06-13 08:22:17,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:17,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 326 transitions. [2021-06-13 08:22:17,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:17,594 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) [2021-06-13 08:22:17,594 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) [2021-06-13 08:22:17,594 INFO L185 Difference]: Start difference. First operand has 806 places, 988 transitions, 34136 flow. Second operand 10 states and 326 transitions. [2021-06-13 08:22:17,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 815 places, 1030 transitions, 38936 flow [2021-06-13 08:22:22,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 811 places, 1030 transitions, 37765 flow, removed 551 selfloop flow, removed 4 redundant places. [2021-06-13 08:22:22,322 INFO L241 Difference]: Finished difference. Result has 813 places, 998 transitions, 35034 flow [2021-06-13 08:22:22,323 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=32965, PETRI_DIFFERENCE_MINUEND_PLACES=802, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=988, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=948, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35034, PETRI_PLACES=813, PETRI_TRANSITIONS=998} [2021-06-13 08:22:22,323 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 774 predicate places. [2021-06-13 08:22:22,323 INFO L482 AbstractCegarLoop]: Abstraction has has 813 places, 998 transitions, 35034 flow [2021-06-13 08:22:22,323 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) [2021-06-13 08:22:22,323 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:22,323 INFO L255 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] [2021-06-13 08:22:22,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-13 08:22:22,323 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:22,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2048484806, now seen corresponding path program 106 times [2021-06-13 08:22:22,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:22,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620381] [2021-06-13 08:22:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:22,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:22,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:22,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:22,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:22,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:22,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:22,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:22,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:22,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:22,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:22:22,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:22,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:22,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:22,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:22,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:22,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:22,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:22:22,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:22:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:22,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:22,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620381] [2021-06-13 08:22:22,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:22,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:22,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:22:22,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576163422] [2021-06-13 08:22:22,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:22:22,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:22,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:22:22,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:22:22,433 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:22:22,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 998 transitions, 35034 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) [2021-06-13 08:22:22,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:22,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:22:22,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:24,540 INFO L129 PetriNetUnfolder]: 1377/3363 cut-off events. [2021-06-13 08:22:24,541 INFO L130 PetriNetUnfolder]: For 356998/356998 co-relation queries the response was YES. [2021-06-13 08:22:24,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49676 conditions, 3363 events. 1377/3363 cut-off events. For 356998/356998 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 30301 event pairs, 59 based on Foata normal form. 1/3364 useless extension candidates. Maximal degree in co-relation 49237. Up to 2288 conditions per place. [2021-06-13 08:22:24,624 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 976 selfloop transitions, 45 changer transitions 11/1040 dead transitions. [2021-06-13 08:22:24,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1040 transitions, 39878 flow [2021-06-13 08:22:24,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:22:24,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:22:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2021-06-13 08:22:24,625 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2021-06-13 08:22:24,625 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 326 transitions. [2021-06-13 08:22:24,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 326 transitions. [2021-06-13 08:22:24,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:24,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 326 transitions. [2021-06-13 08:22:24,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:24,626 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) [2021-06-13 08:22:24,626 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) [2021-06-13 08:22:24,626 INFO L185 Difference]: Start difference. First operand has 813 places, 998 transitions, 35034 flow. Second operand 10 states and 326 transitions. [2021-06-13 08:22:24,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1040 transitions, 39878 flow [2021-06-13 08:22:28,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 811 places, 1040 transitions, 38183 flow, removed 782 selfloop flow, removed 11 redundant places. [2021-06-13 08:22:28,375 INFO L241 Difference]: Finished difference. Result has 813 places, 1006 transitions, 35135 flow [2021-06-13 08:22:28,375 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=33345, PETRI_DIFFERENCE_MINUEND_PLACES=802, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35135, PETRI_PLACES=813, PETRI_TRANSITIONS=1006} [2021-06-13 08:22:28,375 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 774 predicate places. [2021-06-13 08:22:28,375 INFO L482 AbstractCegarLoop]: Abstraction has has 813 places, 1006 transitions, 35135 flow [2021-06-13 08:22:28,376 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) [2021-06-13 08:22:28,376 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:28,376 INFO L255 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] [2021-06-13 08:22:28,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-13 08:22:28,376 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:28,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:28,376 INFO L82 PathProgramCache]: Analyzing trace with hash 632649806, now seen corresponding path program 107 times [2021-06-13 08:22:28,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:28,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058716550] [2021-06-13 08:22:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:28,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:28,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:28,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:28,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:28,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:28,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:28,450 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:22:28,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:22:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:28,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:28,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058716550] [2021-06-13 08:22:28,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058716550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:28,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:28,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:22:28,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613091364] [2021-06-13 08:22:28,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:22:28,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:28,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:22:28,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:22:28,453 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:22:28,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 1006 transitions, 35135 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) [2021-06-13 08:22:28,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:28,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:22:28,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:30,694 INFO L129 PetriNetUnfolder]: 1377/3340 cut-off events. [2021-06-13 08:22:30,694 INFO L130 PetriNetUnfolder]: For 348181/348181 co-relation queries the response was YES. [2021-06-13 08:22:30,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49179 conditions, 3340 events. 1377/3340 cut-off events. For 348181/348181 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 29926 event pairs, 113 based on Foata normal form. 1/3341 useless extension candidates. Maximal degree in co-relation 48746. Up to 1893 conditions per place. [2021-06-13 08:22:30,814 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 893 selfloop transitions, 126 changer transitions 31/1058 dead transitions. [2021-06-13 08:22:30,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 1058 transitions, 39791 flow [2021-06-13 08:22:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:22:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:22:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-06-13 08:22:30,816 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-06-13 08:22:30,816 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-06-13 08:22:30,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-06-13 08:22:30,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:30,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-06-13 08:22:30,816 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) [2021-06-13 08:22:30,816 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) [2021-06-13 08:22:30,817 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) [2021-06-13 08:22:30,817 INFO L185 Difference]: Start difference. First operand has 813 places, 1006 transitions, 35135 flow. Second operand 10 states and 331 transitions. [2021-06-13 08:22:30,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 1058 transitions, 39791 flow [2021-06-13 08:22:34,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 817 places, 1058 transitions, 33591 flow, removed 3077 selfloop flow, removed 5 redundant places. [2021-06-13 08:22:34,985 INFO L241 Difference]: Finished difference. Result has 824 places, 997 transitions, 29260 flow [2021-06-13 08:22:34,985 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=28935, PETRI_DIFFERENCE_MINUEND_PLACES=808, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=29260, PETRI_PLACES=824, PETRI_TRANSITIONS=997} [2021-06-13 08:22:34,986 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 785 predicate places. [2021-06-13 08:22:34,986 INFO L482 AbstractCegarLoop]: Abstraction has has 824 places, 997 transitions, 29260 flow [2021-06-13 08:22:34,986 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) [2021-06-13 08:22:34,986 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:34,986 INFO L255 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] [2021-06-13 08:22:34,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-13 08:22:34,986 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:34,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:34,987 INFO L82 PathProgramCache]: Analyzing trace with hash -630180102, now seen corresponding path program 108 times [2021-06-13 08:22:34,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:34,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341415092] [2021-06-13 08:22:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:34,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:34,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:34,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:34,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:35,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:35,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:35,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:35,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:35,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:35,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:35,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:35,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:35,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:35,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:35,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:35,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:35,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:22:35,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:22:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:35,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:35,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341415092] [2021-06-13 08:22:35,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341415092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:35,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:35,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:22:35,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607134801] [2021-06-13 08:22:35,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:22:35,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:35,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:22:35,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:22:35,067 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:22:35,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 997 transitions, 29260 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) [2021-06-13 08:22:35,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:35,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:22:35,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:37,710 INFO L129 PetriNetUnfolder]: 1359/3304 cut-off events. [2021-06-13 08:22:37,711 INFO L130 PetriNetUnfolder]: For 331267/331267 co-relation queries the response was YES. [2021-06-13 08:22:37,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46212 conditions, 3304 events. 1359/3304 cut-off events. For 331267/331267 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 29669 event pairs, 56 based on Foata normal form. 1/3305 useless extension candidates. Maximal degree in co-relation 45774. Up to 2200 conditions per place. [2021-06-13 08:22:37,827 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 931 selfloop transitions, 93 changer transitions 7/1039 dead transitions. [2021-06-13 08:22:37,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 833 places, 1039 transitions, 33936 flow [2021-06-13 08:22:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:22:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:22:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2021-06-13 08:22:37,829 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2021-06-13 08:22:37,829 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 326 transitions. [2021-06-13 08:22:37,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 326 transitions. [2021-06-13 08:22:37,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:37,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 326 transitions. [2021-06-13 08:22:37,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:37,829 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) [2021-06-13 08:22:37,830 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) [2021-06-13 08:22:37,830 INFO L185 Difference]: Start difference. First operand has 824 places, 997 transitions, 29260 flow. Second operand 10 states and 326 transitions. [2021-06-13 08:22:37,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 833 places, 1039 transitions, 33936 flow [2021-06-13 08:22:43,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 1039 transitions, 33174 flow, removed 260 selfloop flow, removed 15 redundant places. [2021-06-13 08:22:43,113 INFO L241 Difference]: Finished difference. Result has 822 places, 1007 transitions, 30315 flow [2021-06-13 08:22:43,114 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=28522, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=909, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=30315, PETRI_PLACES=822, PETRI_TRANSITIONS=1007} [2021-06-13 08:22:43,114 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 783 predicate places. [2021-06-13 08:22:43,114 INFO L482 AbstractCegarLoop]: Abstraction has has 822 places, 1007 transitions, 30315 flow [2021-06-13 08:22:43,115 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) [2021-06-13 08:22:43,115 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:43,115 INFO L255 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] [2021-06-13 08:22:43,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-13 08:22:43,115 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:43,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:43,115 INFO L82 PathProgramCache]: Analyzing trace with hash -239094948, now seen corresponding path program 109 times [2021-06-13 08:22:43,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:43,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029772381] [2021-06-13 08:22:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:43,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:43,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:43,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:43,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:43,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:43,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:43,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:43,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:43,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:43,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:43,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:43,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:43,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:43,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:43,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:43,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:43,243 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:22:43,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:22:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:43,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:43,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029772381] [2021-06-13 08:22:43,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029772381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:43,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:43,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:22:43,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386226845] [2021-06-13 08:22:43,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:22:43,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:43,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:22:43,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:22:43,247 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:22:43,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 1007 transitions, 30315 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) [2021-06-13 08:22:43,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:43,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:22:43,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:45,178 INFO L129 PetriNetUnfolder]: 1361/3303 cut-off events. [2021-06-13 08:22:45,179 INFO L130 PetriNetUnfolder]: For 324535/324535 co-relation queries the response was YES. [2021-06-13 08:22:45,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46099 conditions, 3303 events. 1361/3303 cut-off events. For 324535/324535 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 29650 event pairs, 66 based on Foata normal form. 1/3304 useless extension candidates. Maximal degree in co-relation 45665. Up to 2220 conditions per place. [2021-06-13 08:22:45,261 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 977 selfloop transitions, 55 changer transitions 4/1044 dead transitions. [2021-06-13 08:22:45,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 1044 transitions, 34104 flow [2021-06-13 08:22:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:22:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:22:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:22:45,262 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:22:45,262 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:22:45,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:22:45,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:45,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:22:45,262 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) [2021-06-13 08:22:45,262 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) [2021-06-13 08:22:45,262 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) [2021-06-13 08:22:45,262 INFO L185 Difference]: Start difference. First operand has 822 places, 1007 transitions, 30315 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:22:45,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 1044 transitions, 34104 flow [2021-06-13 08:22:49,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 826 places, 1044 transitions, 32834 flow, removed 606 selfloop flow, removed 4 redundant places. [2021-06-13 08:22:49,090 INFO L241 Difference]: Finished difference. Result has 831 places, 1014 transitions, 30150 flow [2021-06-13 08:22:49,090 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=29045, PETRI_DIFFERENCE_MINUEND_PLACES=818, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1007, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=953, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=30150, PETRI_PLACES=831, PETRI_TRANSITIONS=1014} [2021-06-13 08:22:49,091 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 792 predicate places. [2021-06-13 08:22:49,091 INFO L482 AbstractCegarLoop]: Abstraction has has 831 places, 1014 transitions, 30150 flow [2021-06-13 08:22:49,091 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) [2021-06-13 08:22:49,091 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:49,091 INFO L255 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] [2021-06-13 08:22:49,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-13 08:22:49,091 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:49,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:49,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1974589690, now seen corresponding path program 110 times [2021-06-13 08:22:49,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:49,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896912996] [2021-06-13 08:22:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:49,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:49,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:49,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:49,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:49,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:49,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:49,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:49,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:49,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:49,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:49,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:49,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:49,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:49,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:49,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:49,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:49,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:22:49,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:22:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:49,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:49,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896912996] [2021-06-13 08:22:49,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896912996] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:49,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:49,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:22:49,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010196711] [2021-06-13 08:22:49,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:22:49,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:49,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:22:49,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:22:49,158 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:22:49,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 831 places, 1014 transitions, 30150 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) [2021-06-13 08:22:49,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:49,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:22:49,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:51,079 INFO L129 PetriNetUnfolder]: 1369/3315 cut-off events. [2021-06-13 08:22:51,079 INFO L130 PetriNetUnfolder]: For 340224/340224 co-relation queries the response was YES. [2021-06-13 08:22:51,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46777 conditions, 3315 events. 1369/3315 cut-off events. For 340224/340224 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 29800 event pairs, 76 based on Foata normal form. 1/3316 useless extension candidates. Maximal degree in co-relation 46340. Up to 2131 conditions per place. [2021-06-13 08:22:51,162 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 942 selfloop transitions, 103 changer transitions 9/1062 dead transitions. [2021-06-13 08:22:51,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 1062 transitions, 35004 flow [2021-06-13 08:22:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:22:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:22:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-06-13 08:22:51,163 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-06-13 08:22:51,163 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-06-13 08:22:51,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-06-13 08:22:51,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:51,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-06-13 08:22:51,163 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) [2021-06-13 08:22:51,163 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) [2021-06-13 08:22:51,163 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) [2021-06-13 08:22:51,163 INFO L185 Difference]: Start difference. First operand has 831 places, 1014 transitions, 30150 flow. Second operand 10 states and 328 transitions. [2021-06-13 08:22:51,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 1062 transitions, 35004 flow [2021-06-13 08:22:55,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 1062 transitions, 34253 flow, removed 349 selfloop flow, removed 4 redundant places. [2021-06-13 08:22:55,203 INFO L241 Difference]: Finished difference. Result has 843 places, 1026 transitions, 31175 flow [2021-06-13 08:22:55,204 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=29403, PETRI_DIFFERENCE_MINUEND_PLACES=827, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1014, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=914, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31175, PETRI_PLACES=843, PETRI_TRANSITIONS=1026} [2021-06-13 08:22:55,204 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 804 predicate places. [2021-06-13 08:22:55,204 INFO L482 AbstractCegarLoop]: Abstraction has has 843 places, 1026 transitions, 31175 flow [2021-06-13 08:22:55,204 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) [2021-06-13 08:22:55,204 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:22:55,204 INFO L255 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] [2021-06-13 08:22:55,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-13 08:22:55,204 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:22:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:22:55,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1427839046, now seen corresponding path program 111 times [2021-06-13 08:22:55,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:22:55,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975098130] [2021-06-13 08:22:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:22:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:22:55,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:55,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:55,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:55,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:55,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:55,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:55,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:55,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:55,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:55,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:22:55,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:55,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:22:55,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:55,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:22:55,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:22:55,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:22:55,278 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:22:55,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:22:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:22:55,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:22:55,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975098130] [2021-06-13 08:22:55,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975098130] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:22:55,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:22:55,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:22:55,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371455880] [2021-06-13 08:22:55,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:22:55,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:22:55,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:22:55,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:22:55,286 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:22:55,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 1026 transitions, 31175 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) [2021-06-13 08:22:55,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:22:55,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:22:55,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:22:57,136 INFO L129 PetriNetUnfolder]: 1372/3345 cut-off events. [2021-06-13 08:22:57,137 INFO L130 PetriNetUnfolder]: For 362957/362957 co-relation queries the response was YES. [2021-06-13 08:22:57,208 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47530 conditions, 3345 events. 1372/3345 cut-off events. For 362957/362957 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 30208 event pairs, 56 based on Foata normal form. 1/3346 useless extension candidates. Maximal degree in co-relation 47086. Up to 2268 conditions per place. [2021-06-13 08:22:57,226 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 959 selfloop transitions, 96 changer transitions 4/1067 dead transitions. [2021-06-13 08:22:57,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 852 places, 1067 transitions, 35806 flow [2021-06-13 08:22:57,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:22:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:22:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2021-06-13 08:22:57,227 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2021-06-13 08:22:57,227 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 324 transitions. [2021-06-13 08:22:57,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 324 transitions. [2021-06-13 08:22:57,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:22:57,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 324 transitions. [2021-06-13 08:22:57,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:22:57,228 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) [2021-06-13 08:22:57,228 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) [2021-06-13 08:22:57,228 INFO L185 Difference]: Start difference. First operand has 843 places, 1026 transitions, 31175 flow. Second operand 10 states and 324 transitions. [2021-06-13 08:22:57,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 852 places, 1067 transitions, 35806 flow [2021-06-13 08:23:01,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 845 places, 1067 transitions, 34525 flow, removed 568 selfloop flow, removed 7 redundant places. [2021-06-13 08:23:01,408 INFO L241 Difference]: Finished difference. Result has 850 places, 1040 transitions, 31925 flow [2021-06-13 08:23:01,409 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=29906, PETRI_DIFFERENCE_MINUEND_PLACES=836, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1026, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=934, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31925, PETRI_PLACES=850, PETRI_TRANSITIONS=1040} [2021-06-13 08:23:01,409 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 811 predicate places. [2021-06-13 08:23:01,409 INFO L482 AbstractCegarLoop]: Abstraction has has 850 places, 1040 transitions, 31925 flow [2021-06-13 08:23:01,409 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) [2021-06-13 08:23:01,409 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:23:01,409 INFO L255 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] [2021-06-13 08:23:01,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-13 08:23:01,409 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:23:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:23:01,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1054048330, now seen corresponding path program 112 times [2021-06-13 08:23:01,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:23:01,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27696661] [2021-06-13 08:23:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:23:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:23:01,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:01,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:01,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:01,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:01,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:01,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:01,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:01,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:01,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:01,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:23:01,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:01,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:01,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:01,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:01,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:01,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:01,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:23:01,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:23:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:23:01,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:23:01,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27696661] [2021-06-13 08:23:01,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27696661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:23:01,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:23:01,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:23:01,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368468865] [2021-06-13 08:23:01,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:23:01,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:23:01,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:23:01,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:23:01,489 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:23:01,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 1040 transitions, 31925 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) [2021-06-13 08:23:01,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:23:01,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:23:01,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:23:03,450 INFO L129 PetriNetUnfolder]: 1379/3363 cut-off events. [2021-06-13 08:23:03,450 INFO L130 PetriNetUnfolder]: For 358088/358088 co-relation queries the response was YES. [2021-06-13 08:23:03,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47681 conditions, 3363 events. 1379/3363 cut-off events. For 358088/358088 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 30429 event pairs, 66 based on Foata normal form. 1/3364 useless extension candidates. Maximal degree in co-relation 47234. Up to 2251 conditions per place. [2021-06-13 08:23:03,597 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 998 selfloop transitions, 74 changer transitions 4/1084 dead transitions. [2021-06-13 08:23:03,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 859 places, 1084 transitions, 36003 flow [2021-06-13 08:23:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:23:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:23:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2021-06-13 08:23:03,598 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7431818181818182 [2021-06-13 08:23:03,598 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 327 transitions. [2021-06-13 08:23:03,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 327 transitions. [2021-06-13 08:23:03,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:23:03,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 327 transitions. [2021-06-13 08:23:03,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:23:03,599 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) [2021-06-13 08:23:03,599 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) [2021-06-13 08:23:03,599 INFO L185 Difference]: Start difference. First operand has 850 places, 1040 transitions, 31925 flow. Second operand 10 states and 327 transitions. [2021-06-13 08:23:03,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 859 places, 1084 transitions, 36003 flow [2021-06-13 08:23:07,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 854 places, 1084 transitions, 34745 flow, removed 593 selfloop flow, removed 5 redundant places. [2021-06-13 08:23:07,805 INFO L241 Difference]: Finished difference. Result has 861 places, 1054 transitions, 32035 flow [2021-06-13 08:23:07,806 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=30667, PETRI_DIFFERENCE_MINUEND_PLACES=845, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=967, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32035, PETRI_PLACES=861, PETRI_TRANSITIONS=1054} [2021-06-13 08:23:07,806 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 822 predicate places. [2021-06-13 08:23:07,806 INFO L482 AbstractCegarLoop]: Abstraction has has 861 places, 1054 transitions, 32035 flow [2021-06-13 08:23:07,806 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) [2021-06-13 08:23:07,806 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:23:07,806 INFO L255 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] [2021-06-13 08:23:07,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-13 08:23:07,806 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:23:07,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:23:07,806 INFO L82 PathProgramCache]: Analyzing trace with hash 535118202, now seen corresponding path program 113 times [2021-06-13 08:23:07,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:23:07,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178091784] [2021-06-13 08:23:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:23:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:23:07,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:07,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:07,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:07,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:07,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:07,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:07,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:07,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:07,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:07,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:23:07,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:07,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:07,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:07,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:07,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:07,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:07,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:23:07,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:23:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:23:07,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:23:07,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178091784] [2021-06-13 08:23:07,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178091784] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:23:07,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:23:07,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:23:07,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186925438] [2021-06-13 08:23:07,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:23:07,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:23:07,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:23:07,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:23:07,885 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:23:07,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 861 places, 1054 transitions, 32035 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) [2021-06-13 08:23:07,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:23:07,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:23:07,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:23:09,869 INFO L129 PetriNetUnfolder]: 1392/3385 cut-off events. [2021-06-13 08:23:09,869 INFO L130 PetriNetUnfolder]: For 378610/378610 co-relation queries the response was YES. [2021-06-13 08:23:09,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48391 conditions, 3385 events. 1392/3385 cut-off events. For 378610/378610 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 30616 event pairs, 68 based on Foata normal form. 1/3386 useless extension candidates. Maximal degree in co-relation 47937. Up to 2247 conditions per place. [2021-06-13 08:23:09,970 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1011 selfloop transitions, 81 changer transitions 6/1106 dead transitions. [2021-06-13 08:23:09,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 1106 transitions, 36810 flow [2021-06-13 08:23:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:23:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:23:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2021-06-13 08:23:09,971 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2021-06-13 08:23:09,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 326 transitions. [2021-06-13 08:23:09,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 326 transitions. [2021-06-13 08:23:09,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:23:09,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 326 transitions. [2021-06-13 08:23:09,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:23:09,972 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) [2021-06-13 08:23:09,972 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) [2021-06-13 08:23:09,972 INFO L185 Difference]: Start difference. First operand has 861 places, 1054 transitions, 32035 flow. Second operand 10 states and 326 transitions. [2021-06-13 08:23:09,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 1106 transitions, 36810 flow [2021-06-13 08:23:14,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 865 places, 1106 transitions, 36041 flow, removed 357 selfloop flow, removed 5 redundant places. [2021-06-13 08:23:14,366 INFO L241 Difference]: Finished difference. Result has 872 places, 1075 transitions, 32957 flow [2021-06-13 08:23:14,366 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31270, PETRI_DIFFERENCE_MINUEND_PLACES=856, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1054, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=975, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32957, PETRI_PLACES=872, PETRI_TRANSITIONS=1075} [2021-06-13 08:23:14,367 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 833 predicate places. [2021-06-13 08:23:14,367 INFO L482 AbstractCegarLoop]: Abstraction has has 872 places, 1075 transitions, 32957 flow [2021-06-13 08:23:14,367 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) [2021-06-13 08:23:14,367 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:23:14,367 INFO L255 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] [2021-06-13 08:23:14,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-13 08:23:14,367 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:23:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:23:14,367 INFO L82 PathProgramCache]: Analyzing trace with hash -903790516, now seen corresponding path program 114 times [2021-06-13 08:23:14,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:23:14,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331625882] [2021-06-13 08:23:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:23:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:23:14,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:14,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:14,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:14,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:14,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:14,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:14,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:14,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:14,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:14,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:14,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:14,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:14,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:14,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:14,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:14,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:14,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:23:14,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:23:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:23:14,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:23:14,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331625882] [2021-06-13 08:23:14,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331625882] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:23:14,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:23:14,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:23:14,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429972033] [2021-06-13 08:23:14,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:23:14,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:23:14,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:23:14,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:23:14,429 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:23:14,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 872 places, 1075 transitions, 32957 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) [2021-06-13 08:23:14,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:23:14,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:23:14,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:23:16,418 INFO L129 PetriNetUnfolder]: 1393/3396 cut-off events. [2021-06-13 08:23:16,419 INFO L130 PetriNetUnfolder]: For 384279/384279 co-relation queries the response was YES. [2021-06-13 08:23:16,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48730 conditions, 3396 events. 1393/3396 cut-off events. For 384279/384279 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 30747 event pairs, 69 based on Foata normal form. 1/3397 useless extension candidates. Maximal degree in co-relation 48270. Up to 2222 conditions per place. [2021-06-13 08:23:16,509 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1021 selfloop transitions, 73 changer transitions 8/1110 dead transitions. [2021-06-13 08:23:16,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 880 places, 1110 transitions, 37001 flow [2021-06-13 08:23:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:23:16,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:23:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:23:16,509 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:23:16,509 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:23:16,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:23:16,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:23:16,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:23:16,510 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) [2021-06-13 08:23:16,510 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) [2021-06-13 08:23:16,510 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) [2021-06-13 08:23:16,510 INFO L185 Difference]: Start difference. First operand has 872 places, 1075 transitions, 32957 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:23:16,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 880 places, 1110 transitions, 37001 flow [2021-06-13 08:23:21,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 873 places, 1110 transitions, 35836 flow, removed 540 selfloop flow, removed 7 redundant places. [2021-06-13 08:23:21,322 INFO L241 Difference]: Finished difference. Result has 878 places, 1076 transitions, 32606 flow [2021-06-13 08:23:21,322 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31822, PETRI_DIFFERENCE_MINUEND_PLACES=865, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1003, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32606, PETRI_PLACES=878, PETRI_TRANSITIONS=1076} [2021-06-13 08:23:21,323 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 839 predicate places. [2021-06-13 08:23:21,323 INFO L482 AbstractCegarLoop]: Abstraction has has 878 places, 1076 transitions, 32606 flow [2021-06-13 08:23:21,323 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) [2021-06-13 08:23:21,323 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:23:21,323 INFO L255 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] [2021-06-13 08:23:21,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-13 08:23:21,323 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:23:21,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:23:21,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1624260692, now seen corresponding path program 115 times [2021-06-13 08:23:21,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:23:21,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369398379] [2021-06-13 08:23:21,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:23:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:23:21,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:21,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:21,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:21,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:21,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:21,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:21,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:21,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:21,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:21,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:21,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:21,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:21,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:21,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:21,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:21,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:21,375 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:23:21,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:23:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:23:21,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:23:21,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369398379] [2021-06-13 08:23:21,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369398379] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:23:21,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:23:21,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:23:21,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766277232] [2021-06-13 08:23:21,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:23:21,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:23:21,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:23:21,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:23:21,379 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:23:21,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 1076 transitions, 32606 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) [2021-06-13 08:23:21,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:23:21,379 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:23:21,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:23:23,486 INFO L129 PetriNetUnfolder]: 1410/3435 cut-off events. [2021-06-13 08:23:23,486 INFO L130 PetriNetUnfolder]: For 371627/371627 co-relation queries the response was YES. [2021-06-13 08:23:23,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49157 conditions, 3435 events. 1410/3435 cut-off events. For 371627/371627 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 31207 event pairs, 50 based on Foata normal form. 1/3436 useless extension candidates. Maximal degree in co-relation 48695. Up to 2357 conditions per place. [2021-06-13 08:23:23,673 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1044 selfloop transitions, 65 changer transitions 4/1121 dead transitions. [2021-06-13 08:23:23,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 885 places, 1121 transitions, 37197 flow [2021-06-13 08:23:23,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:23:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:23:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 265 transitions. [2021-06-13 08:23:23,674 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7528409090909091 [2021-06-13 08:23:23,674 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 265 transitions. [2021-06-13 08:23:23,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 265 transitions. [2021-06-13 08:23:23,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:23:23,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 265 transitions. [2021-06-13 08:23:23,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.125) internal successors, (265), 8 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:23:23,675 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) [2021-06-13 08:23:23,675 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) [2021-06-13 08:23:23,676 INFO L185 Difference]: Start difference. First operand has 878 places, 1076 transitions, 32606 flow. Second operand 8 states and 265 transitions. [2021-06-13 08:23:23,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 885 places, 1121 transitions, 37197 flow [2021-06-13 08:23:28,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 1121 transitions, 36621 flow, removed 254 selfloop flow, removed 5 redundant places. [2021-06-13 08:23:28,208 INFO L241 Difference]: Finished difference. Result has 886 places, 1095 transitions, 33849 flow [2021-06-13 08:23:28,208 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=32030, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1014, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33849, PETRI_PLACES=886, PETRI_TRANSITIONS=1095} [2021-06-13 08:23:28,208 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 847 predicate places. [2021-06-13 08:23:28,208 INFO L482 AbstractCegarLoop]: Abstraction has has 886 places, 1095 transitions, 33849 flow [2021-06-13 08:23:28,208 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) [2021-06-13 08:23:28,209 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:23:28,209 INFO L255 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] [2021-06-13 08:23:28,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-13 08:23:28,209 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:23:28,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:23:28,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1642387322, now seen corresponding path program 116 times [2021-06-13 08:23:28,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:23:28,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427516945] [2021-06-13 08:23:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:23:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:23:28,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:28,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:28,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:28,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:28,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:28,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:28,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:28,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:28,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:28,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:28,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:28,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:28,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:28,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:28,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:28,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:28,268 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:23:28,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:23:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:23:28,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:23:28,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427516945] [2021-06-13 08:23:28,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427516945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:23:28,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:23:28,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:23:28,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084803626] [2021-06-13 08:23:28,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:23:28,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:23:28,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:23:28,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:23:28,272 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:23:28,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 886 places, 1095 transitions, 33849 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) [2021-06-13 08:23:28,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:23:28,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:23:28,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:23:30,420 INFO L129 PetriNetUnfolder]: 1411/3450 cut-off events. [2021-06-13 08:23:30,420 INFO L130 PetriNetUnfolder]: For 385493/385493 co-relation queries the response was YES. [2021-06-13 08:23:30,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49846 conditions, 3450 events. 1411/3450 cut-off events. For 385493/385493 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 31402 event pairs, 79 based on Foata normal form. 1/3451 useless extension candidates. Maximal degree in co-relation 49378. Up to 2257 conditions per place. [2021-06-13 08:23:30,562 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1042 selfloop transitions, 72 changer transitions 10/1132 dead transitions. [2021-06-13 08:23:30,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 1132 transitions, 38132 flow [2021-06-13 08:23:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:23:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:23:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:23:30,563 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:23:30,563 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:23:30,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:23:30,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:23:30,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:23:30,564 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) [2021-06-13 08:23:30,564 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) [2021-06-13 08:23:30,564 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) [2021-06-13 08:23:30,564 INFO L185 Difference]: Start difference. First operand has 886 places, 1095 transitions, 33849 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:23:30,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 1132 transitions, 38132 flow [2021-06-13 08:23:35,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 1132 transitions, 37226 flow, removed 453 selfloop flow, removed 0 redundant places. [2021-06-13 08:23:35,700 INFO L241 Difference]: Finished difference. Result has 899 places, 1096 transitions, 33953 flow [2021-06-13 08:23:35,701 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=32943, PETRI_DIFFERENCE_MINUEND_PLACES=886, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1025, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=33953, PETRI_PLACES=899, PETRI_TRANSITIONS=1096} [2021-06-13 08:23:35,701 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 860 predicate places. [2021-06-13 08:23:35,701 INFO L482 AbstractCegarLoop]: Abstraction has has 899 places, 1096 transitions, 33953 flow [2021-06-13 08:23:35,701 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) [2021-06-13 08:23:35,701 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:23:35,701 INFO L255 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] [2021-06-13 08:23:35,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-13 08:23:35,701 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:23:35,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:23:35,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1563715612, now seen corresponding path program 117 times [2021-06-13 08:23:35,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:23:35,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044190110] [2021-06-13 08:23:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:23:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:23:35,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:35,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:35,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:35,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:35,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:35,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:35,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:35,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:35,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:35,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:35,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:35,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:35,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:35,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:35,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:35,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:35,757 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:23:35,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:23:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:23:35,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:23:35,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044190110] [2021-06-13 08:23:35,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044190110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:23:35,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:23:35,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:23:35,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81151096] [2021-06-13 08:23:35,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:23:35,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:23:35,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:23:35,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:23:35,761 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:23:35,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 899 places, 1096 transitions, 33953 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) [2021-06-13 08:23:35,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:23:35,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:23:35,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:23:37,854 INFO L129 PetriNetUnfolder]: 1410/3451 cut-off events. [2021-06-13 08:23:37,854 INFO L130 PetriNetUnfolder]: For 408565/408565 co-relation queries the response was YES. [2021-06-13 08:23:37,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50404 conditions, 3451 events. 1410/3451 cut-off events. For 408565/408565 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 31433 event pairs, 59 based on Foata normal form. 1/3452 useless extension candidates. Maximal degree in co-relation 49927. Up to 2274 conditions per place. [2021-06-13 08:23:37,951 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1014 selfloop transitions, 103 changer transitions 9/1134 dead transitions. [2021-06-13 08:23:37,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 1134 transitions, 38803 flow [2021-06-13 08:23:37,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:23:37,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:23:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2021-06-13 08:23:37,951 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7449494949494949 [2021-06-13 08:23:37,952 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 295 transitions. [2021-06-13 08:23:37,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 295 transitions. [2021-06-13 08:23:37,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:23:37,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 295 transitions. [2021-06-13 08:23:37,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.77777777777778) internal successors, (295), 9 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:23:37,952 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) [2021-06-13 08:23:37,952 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) [2021-06-13 08:23:37,952 INFO L185 Difference]: Start difference. First operand has 899 places, 1096 transitions, 33953 flow. Second operand 9 states and 295 transitions. [2021-06-13 08:23:37,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 1134 transitions, 38803 flow [2021-06-13 08:23:42,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 1134 transitions, 38024 flow, removed 355 selfloop flow, removed 5 redundant places. [2021-06-13 08:23:42,782 INFO L241 Difference]: Finished difference. Result has 906 places, 1102 transitions, 34505 flow [2021-06-13 08:23:42,783 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=33176, PETRI_DIFFERENCE_MINUEND_PLACES=894, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=996, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34505, PETRI_PLACES=906, PETRI_TRANSITIONS=1102} [2021-06-13 08:23:42,783 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 867 predicate places. [2021-06-13 08:23:42,783 INFO L482 AbstractCegarLoop]: Abstraction has has 906 places, 1102 transitions, 34505 flow [2021-06-13 08:23:42,783 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) [2021-06-13 08:23:42,783 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:23:42,783 INFO L255 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] [2021-06-13 08:23:42,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-13 08:23:42,783 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:23:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:23:42,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1016774170, now seen corresponding path program 118 times [2021-06-13 08:23:42,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:23:42,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970376100] [2021-06-13 08:23:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:23:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:23:42,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:42,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:42,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:42,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:42,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:42,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:42,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:42,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:42,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:42,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:42,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:42,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:42,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:42,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:42,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:42,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:42,843 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:23:42,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:23:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:23:42,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:23:42,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970376100] [2021-06-13 08:23:42,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970376100] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:23:42,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:23:42,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:23:42,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667541925] [2021-06-13 08:23:42,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:23:42,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:23:42,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:23:42,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:23:42,847 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:23:42,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 906 places, 1102 transitions, 34505 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) [2021-06-13 08:23:42,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:23:42,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:23:42,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:23:44,998 INFO L129 PetriNetUnfolder]: 1412/3450 cut-off events. [2021-06-13 08:23:44,998 INFO L130 PetriNetUnfolder]: For 404794/404794 co-relation queries the response was YES. [2021-06-13 08:23:45,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50696 conditions, 3450 events. 1412/3450 cut-off events. For 404794/404794 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 31439 event pairs, 75 based on Foata normal form. 1/3451 useless extension candidates. Maximal degree in co-relation 50217. Up to 2195 conditions per place. [2021-06-13 08:23:45,175 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1024 selfloop transitions, 105 changer transitions 9/1146 dead transitions. [2021-06-13 08:23:45,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 915 places, 1146 transitions, 39094 flow [2021-06-13 08:23:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:23:45,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:23:45,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-06-13 08:23:45,176 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-06-13 08:23:45,176 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-06-13 08:23:45,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-06-13 08:23:45,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:23:45,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-06-13 08:23:45,176 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) [2021-06-13 08:23:45,177 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) [2021-06-13 08:23:45,177 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) [2021-06-13 08:23:45,177 INFO L185 Difference]: Start difference. First operand has 906 places, 1102 transitions, 34505 flow. Second operand 10 states and 329 transitions. [2021-06-13 08:23:45,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 915 places, 1146 transitions, 39094 flow [2021-06-13 08:23:50,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 1146 transitions, 38193 flow, removed 382 selfloop flow, removed 6 redundant places. [2021-06-13 08:23:50,154 INFO L241 Difference]: Finished difference. Result has 915 places, 1109 transitions, 35064 flow [2021-06-13 08:23:50,154 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=33604, PETRI_DIFFERENCE_MINUEND_PLACES=900, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=999, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35064, PETRI_PLACES=915, PETRI_TRANSITIONS=1109} [2021-06-13 08:23:50,154 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 876 predicate places. [2021-06-13 08:23:50,154 INFO L482 AbstractCegarLoop]: Abstraction has has 915 places, 1109 transitions, 35064 flow [2021-06-13 08:23:50,154 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) [2021-06-13 08:23:50,155 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:23:50,155 INFO L255 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] [2021-06-13 08:23:50,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-13 08:23:50,155 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:23:50,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:23:50,155 INFO L82 PathProgramCache]: Analyzing trace with hash -342130880, now seen corresponding path program 119 times [2021-06-13 08:23:50,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:23:50,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606946421] [2021-06-13 08:23:50,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:23:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:23:50,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:50,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:50,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:50,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:50,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:50,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:50,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:50,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:50,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:50,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:50,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:50,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:50,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:50,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:50,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:50,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:50,219 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:23:50,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:23:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:23:50,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:23:50,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606946421] [2021-06-13 08:23:50,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606946421] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:23:50,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:23:50,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:23:50,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286265892] [2021-06-13 08:23:50,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:23:50,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:23:50,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:23:50,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:23:50,222 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:23:50,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 1109 transitions, 35064 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) [2021-06-13 08:23:50,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:23:50,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:23:50,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:23:52,422 INFO L129 PetriNetUnfolder]: 1410/3447 cut-off events. [2021-06-13 08:23:52,422 INFO L130 PetriNetUnfolder]: For 422296/422296 co-relation queries the response was YES. [2021-06-13 08:23:52,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51005 conditions, 3447 events. 1410/3447 cut-off events. For 422296/422296 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 31413 event pairs, 64 based on Foata normal form. 1/3448 useless extension candidates. Maximal degree in co-relation 50522. Up to 2329 conditions per place. [2021-06-13 08:23:52,518 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1079 selfloop transitions, 54 changer transitions 5/1146 dead transitions. [2021-06-13 08:23:52,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 924 places, 1146 transitions, 39287 flow [2021-06-13 08:23:52,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:23:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:23:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-06-13 08:23:52,519 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-06-13 08:23:52,519 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-06-13 08:23:52,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-06-13 08:23:52,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:23:52,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-06-13 08:23:52,519 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) [2021-06-13 08:23:52,519 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) [2021-06-13 08:23:52,519 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) [2021-06-13 08:23:52,519 INFO L185 Difference]: Start difference. First operand has 915 places, 1109 transitions, 35064 flow. Second operand 10 states and 328 transitions. [2021-06-13 08:23:52,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 924 places, 1146 transitions, 39287 flow [2021-06-13 08:23:57,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 919 places, 1146 transitions, 38460 flow, removed 363 selfloop flow, removed 5 redundant places. [2021-06-13 08:23:57,847 INFO L241 Difference]: Finished difference. Result has 922 places, 1114 transitions, 35596 flow [2021-06-13 08:23:57,848 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=34245, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1058, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35596, PETRI_PLACES=922, PETRI_TRANSITIONS=1114} [2021-06-13 08:23:57,848 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 883 predicate places. [2021-06-13 08:23:57,848 INFO L482 AbstractCegarLoop]: Abstraction has has 922 places, 1114 transitions, 35596 flow [2021-06-13 08:23:57,848 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) [2021-06-13 08:23:57,848 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:23:57,848 INFO L255 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] [2021-06-13 08:23:57,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-13 08:23:57,849 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:23:57,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:23:57,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1136789188, now seen corresponding path program 120 times [2021-06-13 08:23:57,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:23:57,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524053044] [2021-06-13 08:23:57,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:23:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:23:57,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:57,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:57,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:57,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:57,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:57,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:57,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:57,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:57,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:57,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:57,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:57,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:23:57,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:57,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:23:57,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:23:57,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:23:57,924 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:23:57,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:23:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:23:57,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:23:57,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524053044] [2021-06-13 08:23:57,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524053044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:23:57,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:23:57,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:23:57,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072092102] [2021-06-13 08:23:57,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:23:57,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:23:57,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:23:57,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:23:57,928 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:23:57,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 1114 transitions, 35596 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) [2021-06-13 08:23:57,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:23:57,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:23:57,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:24:00,147 INFO L129 PetriNetUnfolder]: 1412/3458 cut-off events. [2021-06-13 08:24:00,147 INFO L130 PetriNetUnfolder]: For 426970/426970 co-relation queries the response was YES. [2021-06-13 08:24:00,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51398 conditions, 3458 events. 1412/3458 cut-off events. For 426970/426970 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 31599 event pairs, 58 based on Foata normal form. 1/3459 useless extension candidates. Maximal degree in co-relation 50913. Up to 2362 conditions per place. [2021-06-13 08:24:00,243 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1086 selfloop transitions, 48 changer transitions 8/1150 dead transitions. [2021-06-13 08:24:00,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 1150 transitions, 39845 flow [2021-06-13 08:24:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:24:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:24:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2021-06-13 08:24:00,243 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7431818181818182 [2021-06-13 08:24:00,243 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 327 transitions. [2021-06-13 08:24:00,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 327 transitions. [2021-06-13 08:24:00,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:24:00,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 327 transitions. [2021-06-13 08:24:00,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:24:00,244 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) [2021-06-13 08:24:00,244 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) [2021-06-13 08:24:00,244 INFO L185 Difference]: Start difference. First operand has 922 places, 1114 transitions, 35596 flow. Second operand 10 states and 327 transitions. [2021-06-13 08:24:00,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 1150 transitions, 39845 flow [2021-06-13 08:24:05,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 924 places, 1150 transitions, 38801 flow, removed 482 selfloop flow, removed 7 redundant places. [2021-06-13 08:24:05,777 INFO L241 Difference]: Finished difference. Result has 927 places, 1117 transitions, 35806 flow [2021-06-13 08:24:05,777 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=34560, PETRI_DIFFERENCE_MINUEND_PLACES=915, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1069, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35806, PETRI_PLACES=927, PETRI_TRANSITIONS=1117} [2021-06-13 08:24:05,778 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 888 predicate places. [2021-06-13 08:24:05,778 INFO L482 AbstractCegarLoop]: Abstraction has has 927 places, 1117 transitions, 35806 flow [2021-06-13 08:24:05,778 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) [2021-06-13 08:24:05,778 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:24:05,778 INFO L255 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] [2021-06-13 08:24:05,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-13 08:24:05,778 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:24:05,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:24:05,778 INFO L82 PathProgramCache]: Analyzing trace with hash -483235508, now seen corresponding path program 121 times [2021-06-13 08:24:05,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:24:05,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57054036] [2021-06-13 08:24:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:24:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:24:05,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:05,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:05,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:05,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:05,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:05,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:05,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:05,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:05,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:05,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:24:05,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:05,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:05,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:05,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:05,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:05,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:05,856 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:24:05,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:24:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:24:05,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:24:05,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57054036] [2021-06-13 08:24:05,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57054036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:24:05,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:24:05,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:24:05,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037664350] [2021-06-13 08:24:05,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:24:05,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:24:05,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:24:05,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:24:05,859 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:24:05,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 1117 transitions, 35806 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) [2021-06-13 08:24:05,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:24:05,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:24:05,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:24:08,072 INFO L129 PetriNetUnfolder]: 1416/3467 cut-off events. [2021-06-13 08:24:08,072 INFO L130 PetriNetUnfolder]: For 450896/450896 co-relation queries the response was YES. [2021-06-13 08:24:08,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51929 conditions, 3467 events. 1416/3467 cut-off events. For 450896/450896 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 31650 event pairs, 65 based on Foata normal form. 1/3468 useless extension candidates. Maximal degree in co-relation 51444. Up to 2299 conditions per place. [2021-06-13 08:24:08,178 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1041 selfloop transitions, 102 changer transitions 8/1159 dead transitions. [2021-06-13 08:24:08,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 936 places, 1159 transitions, 40840 flow [2021-06-13 08:24:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:24:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:24:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2021-06-13 08:24:08,179 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-06-13 08:24:08,179 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2021-06-13 08:24:08,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2021-06-13 08:24:08,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:24:08,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2021-06-13 08:24:08,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:24:08,180 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) [2021-06-13 08:24:08,180 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) [2021-06-13 08:24:08,180 INFO L185 Difference]: Start difference. First operand has 927 places, 1117 transitions, 35806 flow. Second operand 10 states and 325 transitions. [2021-06-13 08:24:08,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 936 places, 1159 transitions, 40840 flow [2021-06-13 08:24:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 1159 transitions, 39572 flow, removed 575 selfloop flow, removed 10 redundant places. [2021-06-13 08:24:13,610 INFO L241 Difference]: Finished difference. Result has 932 places, 1127 transitions, 36288 flow [2021-06-13 08:24:13,610 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=34558, PETRI_DIFFERENCE_MINUEND_PLACES=917, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1017, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=36288, PETRI_PLACES=932, PETRI_TRANSITIONS=1127} [2021-06-13 08:24:13,610 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 893 predicate places. [2021-06-13 08:24:13,610 INFO L482 AbstractCegarLoop]: Abstraction has has 932 places, 1127 transitions, 36288 flow [2021-06-13 08:24:13,610 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) [2021-06-13 08:24:13,610 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:24:13,610 INFO L255 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] [2021-06-13 08:24:13,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-13 08:24:13,611 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:24:13,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:24:13,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2072861396, now seen corresponding path program 122 times [2021-06-13 08:24:13,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:24:13,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226815115] [2021-06-13 08:24:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:24:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:24:13,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:13,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:13,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:13,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:13,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:13,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:13,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:13,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:13,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:13,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:24:13,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:13,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:13,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:13,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:13,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:13,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:13,699 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:24:13,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:24:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:24:13,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:24:13,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226815115] [2021-06-13 08:24:13,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226815115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:24:13,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:24:13,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:24:13,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712782514] [2021-06-13 08:24:13,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:24:13,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:24:13,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:24:13,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:24:13,702 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:24:13,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 932 places, 1127 transitions, 36288 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) [2021-06-13 08:24:13,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:24:13,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:24:13,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:24:15,895 INFO L129 PetriNetUnfolder]: 1417/3475 cut-off events. [2021-06-13 08:24:15,895 INFO L130 PetriNetUnfolder]: For 458342/458342 co-relation queries the response was YES. [2021-06-13 08:24:15,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52094 conditions, 3475 events. 1417/3475 cut-off events. For 458342/458342 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 31761 event pairs, 68 based on Foata normal form. 1/3476 useless extension candidates. Maximal degree in co-relation 51605. Up to 2265 conditions per place. [2021-06-13 08:24:16,001 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1047 selfloop transitions, 102 changer transitions 8/1165 dead transitions. [2021-06-13 08:24:16,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 1165 transitions, 40682 flow [2021-06-13 08:24:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:24:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:24:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2021-06-13 08:24:16,002 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7431818181818182 [2021-06-13 08:24:16,002 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 327 transitions. [2021-06-13 08:24:16,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 327 transitions. [2021-06-13 08:24:16,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:24:16,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 327 transitions. [2021-06-13 08:24:16,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:24:16,003 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) [2021-06-13 08:24:16,003 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) [2021-06-13 08:24:16,003 INFO L185 Difference]: Start difference. First operand has 932 places, 1127 transitions, 36288 flow. Second operand 10 states and 327 transitions. [2021-06-13 08:24:16,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 1165 transitions, 40682 flow [2021-06-13 08:24:21,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 931 places, 1165 transitions, 39339 flow, removed 591 selfloop flow, removed 10 redundant places. [2021-06-13 08:24:21,670 INFO L241 Difference]: Finished difference. Result has 937 places, 1131 transitions, 35998 flow [2021-06-13 08:24:21,671 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=34965, PETRI_DIFFERENCE_MINUEND_PLACES=922, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1026, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=35998, PETRI_PLACES=937, PETRI_TRANSITIONS=1131} [2021-06-13 08:24:21,671 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 898 predicate places. [2021-06-13 08:24:21,671 INFO L482 AbstractCegarLoop]: Abstraction has has 937 places, 1131 transitions, 35998 flow [2021-06-13 08:24:21,671 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) [2021-06-13 08:24:21,671 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:24:21,671 INFO L255 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] [2021-06-13 08:24:21,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-13 08:24:21,671 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:24:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:24:21,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1866360582, now seen corresponding path program 123 times [2021-06-13 08:24:21,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:24:21,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395948247] [2021-06-13 08:24:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:24:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:24:21,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:21,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:21,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:21,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:21,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:21,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:21,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:21,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:21,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:21,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:21,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:21,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:21,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:21,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:21,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:21,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:21,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:24:21,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:24:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:24:21,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:24:21,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395948247] [2021-06-13 08:24:21,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395948247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:24:21,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:24:21,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:24:21,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088108354] [2021-06-13 08:24:21,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:24:21,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:24:21,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:24:21,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:24:21,742 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:24:21,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 937 places, 1131 transitions, 35998 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) [2021-06-13 08:24:21,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:24:21,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:24:21,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:24:24,183 INFO L129 PetriNetUnfolder]: 1419/3487 cut-off events. [2021-06-13 08:24:24,183 INFO L130 PetriNetUnfolder]: For 447327/447327 co-relation queries the response was YES. [2021-06-13 08:24:24,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52092 conditions, 3487 events. 1419/3487 cut-off events. For 447327/447327 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 31901 event pairs, 45 based on Foata normal form. 1/3488 useless extension candidates. Maximal degree in co-relation 51601. Up to 2439 conditions per place. [2021-06-13 08:24:24,283 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1113 selfloop transitions, 42 changer transitions 3/1166 dead transitions. [2021-06-13 08:24:24,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 944 places, 1166 transitions, 40379 flow [2021-06-13 08:24:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:24:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:24:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 265 transitions. [2021-06-13 08:24:24,284 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7528409090909091 [2021-06-13 08:24:24,284 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 265 transitions. [2021-06-13 08:24:24,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 265 transitions. [2021-06-13 08:24:24,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:24:24,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 265 transitions. [2021-06-13 08:24:24,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.125) internal successors, (265), 8 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:24:24,285 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) [2021-06-13 08:24:24,285 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) [2021-06-13 08:24:24,285 INFO L185 Difference]: Start difference. First operand has 937 places, 1131 transitions, 35998 flow. Second operand 8 states and 265 transitions. [2021-06-13 08:24:24,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 944 places, 1166 transitions, 40379 flow [2021-06-13 08:24:29,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 1166 transitions, 39670 flow, removed 286 selfloop flow, removed 9 redundant places. [2021-06-13 08:24:29,779 INFO L241 Difference]: Finished difference. Result has 939 places, 1141 transitions, 36814 flow [2021-06-13 08:24:29,779 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=35313, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1091, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36814, PETRI_PLACES=939, PETRI_TRANSITIONS=1141} [2021-06-13 08:24:29,779 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 900 predicate places. [2021-06-13 08:24:29,779 INFO L482 AbstractCegarLoop]: Abstraction has has 939 places, 1141 transitions, 36814 flow [2021-06-13 08:24:29,779 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) [2021-06-13 08:24:29,780 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:24:29,780 INFO L255 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] [2021-06-13 08:24:29,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-13 08:24:29,780 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:24:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:24:29,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1222538078, now seen corresponding path program 124 times [2021-06-13 08:24:29,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:24:29,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971045737] [2021-06-13 08:24:29,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:24:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:24:29,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:29,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:29,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:29,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:29,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:29,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:29,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:29,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:29,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:29,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:29,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:29,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:29,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:29,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:29,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:29,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:29,837 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:24:29,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:24:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:24:29,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:24:29,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971045737] [2021-06-13 08:24:29,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971045737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:24:29,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:24:29,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:24:29,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379210066] [2021-06-13 08:24:29,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:24:29,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:24:29,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:24:29,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:24:29,840 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:24:29,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 1141 transitions, 36814 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) [2021-06-13 08:24:29,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:24:29,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:24:29,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:24:32,029 INFO L129 PetriNetUnfolder]: 1424/3501 cut-off events. [2021-06-13 08:24:32,029 INFO L130 PetriNetUnfolder]: For 455050/455050 co-relation queries the response was YES. [2021-06-13 08:24:32,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52665 conditions, 3501 events. 1424/3501 cut-off events. For 455050/455050 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 32097 event pairs, 50 based on Foata normal form. 1/3502 useless extension candidates. Maximal degree in co-relation 52173. Up to 2362 conditions per place. [2021-06-13 08:24:32,209 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1061 selfloop transitions, 106 changer transitions 4/1179 dead transitions. [2021-06-13 08:24:32,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 1179 transitions, 41590 flow [2021-06-13 08:24:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:24:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:24:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2021-06-13 08:24:32,210 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7449494949494949 [2021-06-13 08:24:32,210 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 295 transitions. [2021-06-13 08:24:32,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 295 transitions. [2021-06-13 08:24:32,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:24:32,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 295 transitions. [2021-06-13 08:24:32,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.77777777777778) internal successors, (295), 9 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:24:32,210 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) [2021-06-13 08:24:32,211 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) [2021-06-13 08:24:32,211 INFO L185 Difference]: Start difference. First operand has 939 places, 1141 transitions, 36814 flow. Second operand 9 states and 295 transitions. [2021-06-13 08:24:32,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 1179 transitions, 41590 flow [2021-06-13 08:24:38,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 946 places, 1179 transitions, 40818 flow, removed 382 selfloop flow, removed 1 redundant places. [2021-06-13 08:24:38,479 INFO L241 Difference]: Finished difference. Result has 952 places, 1152 transitions, 37957 flow [2021-06-13 08:24:38,480 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=36042, PETRI_DIFFERENCE_MINUEND_PLACES=938, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1038, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=37957, PETRI_PLACES=952, PETRI_TRANSITIONS=1152} [2021-06-13 08:24:38,480 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 913 predicate places. [2021-06-13 08:24:38,480 INFO L482 AbstractCegarLoop]: Abstraction has has 952 places, 1152 transitions, 37957 flow [2021-06-13 08:24:38,480 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) [2021-06-13 08:24:38,480 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:24:38,480 INFO L255 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] [2021-06-13 08:24:38,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-13 08:24:38,480 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:24:38,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:24:38,481 INFO L82 PathProgramCache]: Analyzing trace with hash -234694452, now seen corresponding path program 125 times [2021-06-13 08:24:38,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:24:38,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729470800] [2021-06-13 08:24:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:24:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:24:38,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:38,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:38,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:38,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:38,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:38,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:38,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:38,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:38,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:38,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:38,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:38,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:38,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:38,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:38,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:38,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:38,536 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:24:38,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:24:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:24:38,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:24:38,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729470800] [2021-06-13 08:24:38,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729470800] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:24:38,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:24:38,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:24:38,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647309063] [2021-06-13 08:24:38,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:24:38,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:24:38,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:24:38,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:24:38,539 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:24:38,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 1152 transitions, 37957 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) [2021-06-13 08:24:38,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:24:38,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:24:38,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:24:40,775 INFO L129 PetriNetUnfolder]: 1424/3502 cut-off events. [2021-06-13 08:24:40,775 INFO L130 PetriNetUnfolder]: For 462434/462434 co-relation queries the response was YES. [2021-06-13 08:24:40,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53114 conditions, 3502 events. 1424/3502 cut-off events. For 462434/462434 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 32141 event pairs, 72 based on Foata normal form. 1/3503 useless extension candidates. Maximal degree in co-relation 52614. Up to 2308 conditions per place. [2021-06-13 08:24:40,879 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1110 selfloop transitions, 59 changer transitions 6/1183 dead transitions. [2021-06-13 08:24:40,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 1183 transitions, 41893 flow [2021-06-13 08:24:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:24:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:24:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-06-13 08:24:40,880 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-06-13 08:24:40,880 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-06-13 08:24:40,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-06-13 08:24:40,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:24:40,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-06-13 08:24:40,880 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) [2021-06-13 08:24:40,881 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) [2021-06-13 08:24:40,881 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) [2021-06-13 08:24:40,881 INFO L185 Difference]: Start difference. First operand has 952 places, 1152 transitions, 37957 flow. Second operand 8 states and 267 transitions. [2021-06-13 08:24:40,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 959 places, 1183 transitions, 41893 flow [2021-06-13 08:24:47,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 956 places, 1183 transitions, 40898 flow, removed 478 selfloop flow, removed 3 redundant places. [2021-06-13 08:24:47,756 INFO L241 Difference]: Finished difference. Result has 960 places, 1153 transitions, 37825 flow [2021-06-13 08:24:47,757 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=36964, PETRI_DIFFERENCE_MINUEND_PLACES=949, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1094, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37825, PETRI_PLACES=960, PETRI_TRANSITIONS=1153} [2021-06-13 08:24:47,757 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 921 predicate places. [2021-06-13 08:24:47,757 INFO L482 AbstractCegarLoop]: Abstraction has has 960 places, 1153 transitions, 37825 flow [2021-06-13 08:24:47,757 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) [2021-06-13 08:24:47,757 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:24:47,757 INFO L255 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] [2021-06-13 08:24:47,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-13 08:24:47,758 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:24:47,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:24:47,758 INFO L82 PathProgramCache]: Analyzing trace with hash -587070142, now seen corresponding path program 126 times [2021-06-13 08:24:47,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:24:47,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897195826] [2021-06-13 08:24:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:24:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:24:47,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:47,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:47,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:47,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:47,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:47,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:47,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:47,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:47,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:47,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:47,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:47,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:47,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:47,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:47,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:47,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:47,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:24:47,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:24:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:24:47,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:24:47,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897195826] [2021-06-13 08:24:47,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897195826] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:24:47,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:24:47,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:24:47,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910222631] [2021-06-13 08:24:47,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:24:47,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:24:47,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:24:47,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:24:47,820 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:24:47,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 960 places, 1153 transitions, 37825 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) [2021-06-13 08:24:47,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:24:47,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:24:47,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:24:50,281 INFO L129 PetriNetUnfolder]: 1424/3495 cut-off events. [2021-06-13 08:24:50,282 INFO L130 PetriNetUnfolder]: For 460745/460745 co-relation queries the response was YES. [2021-06-13 08:24:50,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53255 conditions, 3495 events. 1424/3495 cut-off events. For 460745/460745 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 32055 event pairs, 73 based on Foata normal form. 1/3496 useless extension candidates. Maximal degree in co-relation 52751. Up to 2272 conditions per place. [2021-06-13 08:24:50,379 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1091 selfloop transitions, 80 changer transitions 7/1186 dead transitions. [2021-06-13 08:24:50,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 968 places, 1186 transitions, 41789 flow [2021-06-13 08:24:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:24:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:24:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:24:50,380 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:24:50,380 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:24:50,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:24:50,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:24:50,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:24:50,381 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) [2021-06-13 08:24:50,381 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) [2021-06-13 08:24:50,381 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) [2021-06-13 08:24:50,381 INFO L185 Difference]: Start difference. First operand has 960 places, 1153 transitions, 37825 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:24:50,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 968 places, 1186 transitions, 41789 flow [2021-06-13 08:24:56,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 962 places, 1186 transitions, 41124 flow, removed 296 selfloop flow, removed 6 redundant places. [2021-06-13 08:24:56,980 INFO L241 Difference]: Finished difference. Result has 966 places, 1153 transitions, 38049 flow [2021-06-13 08:24:56,980 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=37162, PETRI_DIFFERENCE_MINUEND_PLACES=954, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1074, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38049, PETRI_PLACES=966, PETRI_TRANSITIONS=1153} [2021-06-13 08:24:56,981 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 927 predicate places. [2021-06-13 08:24:56,981 INFO L482 AbstractCegarLoop]: Abstraction has has 966 places, 1153 transitions, 38049 flow [2021-06-13 08:24:56,981 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) [2021-06-13 08:24:56,981 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:24:56,981 INFO L255 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] [2021-06-13 08:24:56,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-13 08:24:56,981 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:24:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:24:56,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1129686266, now seen corresponding path program 127 times [2021-06-13 08:24:56,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:24:56,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890593468] [2021-06-13 08:24:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:24:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:24:56,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:56,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:56,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:56,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:56,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:56,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:57,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:57,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:24:57,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:57,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:57,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:57,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:57,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:57,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:24:57,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:24:57,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:24:57,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:24:57,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:24:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:24:57,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:24:57,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890593468] [2021-06-13 08:24:57,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890593468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:24:57,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:24:57,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:24:57,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524620187] [2021-06-13 08:24:57,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:24:57,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:24:57,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:24:57,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:24:57,036 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:24:57,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 966 places, 1153 transitions, 38049 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) [2021-06-13 08:24:57,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:24:57,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:24:57,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:24:59,355 INFO L129 PetriNetUnfolder]: 1426/3513 cut-off events. [2021-06-13 08:24:59,356 INFO L130 PetriNetUnfolder]: For 484742/484742 co-relation queries the response was YES. [2021-06-13 08:24:59,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53931 conditions, 3513 events. 1426/3513 cut-off events. For 484742/484742 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 32230 event pairs, 57 based on Foata normal form. 1/3514 useless extension candidates. Maximal degree in co-relation 53425. Up to 2320 conditions per place. [2021-06-13 08:24:59,458 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1080 selfloop transitions, 93 changer transitions 7/1188 dead transitions. [2021-06-13 08:24:59,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 1188 transitions, 42843 flow [2021-06-13 08:24:59,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:24:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:24:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-06-13 08:24:59,459 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-06-13 08:24:59,459 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-06-13 08:24:59,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-06-13 08:24:59,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:24:59,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-06-13 08:24:59,459 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) [2021-06-13 08:24:59,459 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) [2021-06-13 08:24:59,459 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) [2021-06-13 08:24:59,459 INFO L185 Difference]: Start difference. First operand has 966 places, 1153 transitions, 38049 flow. Second operand 9 states and 296 transitions. [2021-06-13 08:24:59,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 974 places, 1188 transitions, 42843 flow [2021-06-13 08:25:05,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 963 places, 1188 transitions, 41954 flow, removed 357 selfloop flow, removed 11 redundant places. [2021-06-13 08:25:05,837 INFO L241 Difference]: Finished difference. Result has 967 places, 1157 transitions, 38299 flow [2021-06-13 08:25:05,837 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=37184, PETRI_DIFFERENCE_MINUEND_PLACES=955, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1062, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38299, PETRI_PLACES=967, PETRI_TRANSITIONS=1157} [2021-06-13 08:25:05,837 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 928 predicate places. [2021-06-13 08:25:05,837 INFO L482 AbstractCegarLoop]: Abstraction has has 967 places, 1157 transitions, 38299 flow [2021-06-13 08:25:05,838 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) [2021-06-13 08:25:05,838 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:25:05,838 INFO L255 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] [2021-06-13 08:25:05,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-13 08:25:05,838 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:25:05,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:25:05,838 INFO L82 PathProgramCache]: Analyzing trace with hash 854652412, now seen corresponding path program 128 times [2021-06-13 08:25:05,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:25:05,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686552529] [2021-06-13 08:25:05,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:25:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:25:05,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:05,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:05,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:05,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:05,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:05,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:05,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:05,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:25:05,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:05,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:05,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:05,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:05,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:05,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:05,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:05,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:05,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:25:05,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:25:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:25:05,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:25:05,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686552529] [2021-06-13 08:25:05,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686552529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:25:05,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:25:05,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:25:05,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211634179] [2021-06-13 08:25:05,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:25:05,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:25:05,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:25:05,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:25:05,892 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:25:05,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 967 places, 1157 transitions, 38299 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) [2021-06-13 08:25:05,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:25:05,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:25:05,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:25:08,171 INFO L129 PetriNetUnfolder]: 1426/3513 cut-off events. [2021-06-13 08:25:08,171 INFO L130 PetriNetUnfolder]: For 483514/483514 co-relation queries the response was YES. [2021-06-13 08:25:08,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53954 conditions, 3513 events. 1426/3513 cut-off events. For 483514/483514 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 32316 event pairs, 80 based on Foata normal form. 1/3514 useless extension candidates. Maximal degree in co-relation 53447. Up to 2227 conditions per place. [2021-06-13 08:25:08,275 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1073 selfloop transitions, 97 changer transitions 15/1193 dead transitions. [2021-06-13 08:25:08,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 975 places, 1193 transitions, 42915 flow [2021-06-13 08:25:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:25:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:25:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:25:08,276 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:25:08,276 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:25:08,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:25:08,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:25:08,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:25:08,276 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) [2021-06-13 08:25:08,277 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) [2021-06-13 08:25:08,277 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) [2021-06-13 08:25:08,277 INFO L185 Difference]: Start difference. First operand has 967 places, 1157 transitions, 38299 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:25:08,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 975 places, 1193 transitions, 42915 flow [2021-06-13 08:25:15,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 968 places, 1193 transitions, 42205 flow, removed 285 selfloop flow, removed 7 redundant places. [2021-06-13 08:25:15,174 INFO L241 Difference]: Finished difference. Result has 974 places, 1152 transitions, 38032 flow [2021-06-13 08:25:15,174 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=37595, PETRI_DIFFERENCE_MINUEND_PLACES=960, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1061, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=38032, PETRI_PLACES=974, PETRI_TRANSITIONS=1152} [2021-06-13 08:25:15,174 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 935 predicate places. [2021-06-13 08:25:15,174 INFO L482 AbstractCegarLoop]: Abstraction has has 974 places, 1152 transitions, 38032 flow [2021-06-13 08:25:15,174 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) [2021-06-13 08:25:15,175 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:25:15,175 INFO L255 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] [2021-06-13 08:25:15,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-13 08:25:15,175 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:25:15,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:25:15,175 INFO L82 PathProgramCache]: Analyzing trace with hash -531738276, now seen corresponding path program 129 times [2021-06-13 08:25:15,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:25:15,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976233263] [2021-06-13 08:25:15,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:25:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:25:15,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:15,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:15,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:15,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:15,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:15,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:15,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:15,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:25:15,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:15,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:15,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:15,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:15,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:15,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:15,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:15,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:15,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:25:15,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:25:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:25:15,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:25:15,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976233263] [2021-06-13 08:25:15,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976233263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:25:15,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:25:15,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:25:15,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660833794] [2021-06-13 08:25:15,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:25:15,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:25:15,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:25:15,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:25:15,241 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:25:15,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 974 places, 1152 transitions, 38032 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) [2021-06-13 08:25:15,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:25:15,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:25:15,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:25:17,644 INFO L129 PetriNetUnfolder]: 1418/3495 cut-off events. [2021-06-13 08:25:17,644 INFO L130 PetriNetUnfolder]: For 483138/483138 co-relation queries the response was YES. [2021-06-13 08:25:17,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53805 conditions, 3495 events. 1418/3495 cut-off events. For 483138/483138 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 32078 event pairs, 78 based on Foata normal form. 1/3496 useless extension candidates. Maximal degree in co-relation 53293. Up to 2148 conditions per place. [2021-06-13 08:25:17,819 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1039 selfloop transitions, 132 changer transitions 11/1190 dead transitions. [2021-06-13 08:25:17,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 983 places, 1190 transitions, 42676 flow [2021-06-13 08:25:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:25:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:25:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-06-13 08:25:17,820 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-06-13 08:25:17,820 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-06-13 08:25:17,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-06-13 08:25:17,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:25:17,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-06-13 08:25:17,821 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) [2021-06-13 08:25:17,821 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) [2021-06-13 08:25:17,821 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) [2021-06-13 08:25:17,821 INFO L185 Difference]: Start difference. First operand has 974 places, 1152 transitions, 38032 flow. Second operand 10 states and 329 transitions. [2021-06-13 08:25:17,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 983 places, 1190 transitions, 42676 flow [2021-06-13 08:25:24,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 971 places, 1190 transitions, 41983 flow, removed 238 selfloop flow, removed 12 redundant places. [2021-06-13 08:25:24,634 INFO L241 Difference]: Finished difference. Result has 977 places, 1151 transitions, 38310 flow [2021-06-13 08:25:24,635 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=37361, PETRI_DIFFERENCE_MINUEND_PLACES=962, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1021, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=38310, PETRI_PLACES=977, PETRI_TRANSITIONS=1151} [2021-06-13 08:25:24,635 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 938 predicate places. [2021-06-13 08:25:24,635 INFO L482 AbstractCegarLoop]: Abstraction has has 977 places, 1151 transitions, 38310 flow [2021-06-13 08:25:24,635 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) [2021-06-13 08:25:24,635 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:25:24,635 INFO L255 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] [2021-06-13 08:25:24,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-13 08:25:24,635 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:25:24,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:25:24,636 INFO L82 PathProgramCache]: Analyzing trace with hash 101860996, now seen corresponding path program 130 times [2021-06-13 08:25:24,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:25:24,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141635186] [2021-06-13 08:25:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:25:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:25:24,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:24,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:24,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:24,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:24,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:24,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:24,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:24,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:25:24,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:24,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:24,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:24,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:24,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:24,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:24,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:24,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:24,698 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:25:24,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:25:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:25:24,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:25:24,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141635186] [2021-06-13 08:25:24,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141635186] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:25:24,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:25:24,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:25:24,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633577166] [2021-06-13 08:25:24,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:25:24,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:25:24,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:25:24,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:25:24,702 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:25:24,702 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 1151 transitions, 38310 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) [2021-06-13 08:25:24,702 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:25:24,702 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:25:24,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:25:27,293 INFO L129 PetriNetUnfolder]: 1416/3472 cut-off events. [2021-06-13 08:25:27,294 INFO L130 PetriNetUnfolder]: For 485086/485086 co-relation queries the response was YES. [2021-06-13 08:25:27,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54009 conditions, 3472 events. 1416/3472 cut-off events. For 485086/485086 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 31730 event pairs, 79 based on Foata normal form. 1/3473 useless extension candidates. Maximal degree in co-relation 53498. Up to 2221 conditions per place. [2021-06-13 08:25:27,395 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1067 selfloop transitions, 106 changer transitions 8/1189 dead transitions. [2021-06-13 08:25:27,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 1189 transitions, 43028 flow [2021-06-13 08:25:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:25:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:25:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:25:27,396 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:25:27,396 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:25:27,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:25:27,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:25:27,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:25:27,396 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) [2021-06-13 08:25:27,397 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) [2021-06-13 08:25:27,397 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) [2021-06-13 08:25:27,397 INFO L185 Difference]: Start difference. First operand has 977 places, 1151 transitions, 38310 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:25:27,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 1189 transitions, 43028 flow [2021-06-13 08:25:34,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 969 places, 1189 transitions, 42216 flow, removed 238 selfloop flow, removed 16 redundant places. [2021-06-13 08:25:34,153 INFO L241 Difference]: Finished difference. Result has 974 places, 1155 transitions, 39107 flow [2021-06-13 08:25:34,153 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=37548, PETRI_DIFFERENCE_MINUEND_PLACES=961, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39107, PETRI_PLACES=974, PETRI_TRANSITIONS=1155} [2021-06-13 08:25:34,153 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 935 predicate places. [2021-06-13 08:25:34,154 INFO L482 AbstractCegarLoop]: Abstraction has has 974 places, 1155 transitions, 39107 flow [2021-06-13 08:25:34,154 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) [2021-06-13 08:25:34,154 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:25:34,154 INFO L255 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] [2021-06-13 08:25:34,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-13 08:25:34,154 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:25:34,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:25:34,154 INFO L82 PathProgramCache]: Analyzing trace with hash 165194456, now seen corresponding path program 131 times [2021-06-13 08:25:34,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:25:34,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304650899] [2021-06-13 08:25:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:25:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:25:34,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:34,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:34,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:34,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:34,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:34,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:34,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:34,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:25:34,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:34,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:34,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:34,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:25:34,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:34,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:34,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:34,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:34,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:25:34,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:25:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:25:34,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:25:34,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304650899] [2021-06-13 08:25:34,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304650899] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:25:34,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:25:34,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:25:34,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266745629] [2021-06-13 08:25:34,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:25:34,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:25:34,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:25:34,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:25:34,221 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:25:34,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 974 places, 1155 transitions, 39107 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) [2021-06-13 08:25:34,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:25:34,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:25:34,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:25:36,708 INFO L129 PetriNetUnfolder]: 1415/3492 cut-off events. [2021-06-13 08:25:36,708 INFO L130 PetriNetUnfolder]: For 487665/487665 co-relation queries the response was YES. [2021-06-13 08:25:36,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54324 conditions, 3492 events. 1415/3492 cut-off events. For 487665/487665 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 32047 event pairs, 60 based on Foata normal form. 1/3492 useless extension candidates. Maximal degree in co-relation 53816. Up to 2262 conditions per place. [2021-06-13 08:25:36,817 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1042 selfloop transitions, 134 changer transitions 7/1191 dead transitions. [2021-06-13 08:25:36,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 983 places, 1191 transitions, 43941 flow [2021-06-13 08:25:36,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:25:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:25:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2021-06-13 08:25:36,818 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2021-06-13 08:25:36,818 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 326 transitions. [2021-06-13 08:25:36,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 326 transitions. [2021-06-13 08:25:36,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:25:36,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 326 transitions. [2021-06-13 08:25:36,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:25:36,819 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) [2021-06-13 08:25:36,819 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) [2021-06-13 08:25:36,819 INFO L185 Difference]: Start difference. First operand has 974 places, 1155 transitions, 39107 flow. Second operand 10 states and 326 transitions. [2021-06-13 08:25:36,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 983 places, 1191 transitions, 43941 flow [2021-06-13 08:25:44,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 974 places, 1191 transitions, 43001 flow, removed 390 selfloop flow, removed 9 redundant places. [2021-06-13 08:25:44,084 INFO L241 Difference]: Finished difference. Result has 978 places, 1159 transitions, 39422 flow [2021-06-13 08:25:44,085 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=38177, PETRI_DIFFERENCE_MINUEND_PLACES=965, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1023, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=39422, PETRI_PLACES=978, PETRI_TRANSITIONS=1159} [2021-06-13 08:25:44,085 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 939 predicate places. [2021-06-13 08:25:44,085 INFO L482 AbstractCegarLoop]: Abstraction has has 978 places, 1159 transitions, 39422 flow [2021-06-13 08:25:44,085 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) [2021-06-13 08:25:44,085 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:25:44,085 INFO L255 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] [2021-06-13 08:25:44,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-13 08:25:44,085 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:25:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:25:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash -279797902, now seen corresponding path program 132 times [2021-06-13 08:25:44,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:25:44,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194480178] [2021-06-13 08:25:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:25:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:25:44,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:44,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:44,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:44,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:44,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:44,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:44,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:44,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:25:44,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:44,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:44,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:44,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:25:44,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:44,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:44,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:44,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:44,147 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:25:44,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:25:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:25:44,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:25:44,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194480178] [2021-06-13 08:25:44,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194480178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:25:44,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:25:44,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:25:44,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644753287] [2021-06-13 08:25:44,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:25:44,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:25:44,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:25:44,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:25:44,150 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:25:44,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 978 places, 1159 transitions, 39422 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) [2021-06-13 08:25:44,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:25:44,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:25:44,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:25:46,569 INFO L129 PetriNetUnfolder]: 1415/3497 cut-off events. [2021-06-13 08:25:46,569 INFO L130 PetriNetUnfolder]: For 482003/482003 co-relation queries the response was YES. [2021-06-13 08:25:46,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54459 conditions, 3497 events. 1415/3497 cut-off events. For 482003/482003 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 32086 event pairs, 63 based on Foata normal form. 1/3498 useless extension candidates. Maximal degree in co-relation 53950. Up to 2328 conditions per place. [2021-06-13 08:25:46,677 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1094 selfloop transitions, 87 changer transitions 6/1195 dead transitions. [2021-06-13 08:25:46,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 987 places, 1195 transitions, 44079 flow [2021-06-13 08:25:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:25:46,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:25:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2021-06-13 08:25:46,678 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7431818181818182 [2021-06-13 08:25:46,678 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 327 transitions. [2021-06-13 08:25:46,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 327 transitions. [2021-06-13 08:25:46,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:25:46,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 327 transitions. [2021-06-13 08:25:46,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:25:46,679 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) [2021-06-13 08:25:46,679 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) [2021-06-13 08:25:46,679 INFO L185 Difference]: Start difference. First operand has 978 places, 1159 transitions, 39422 flow. Second operand 10 states and 327 transitions. [2021-06-13 08:25:46,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 987 places, 1195 transitions, 44079 flow [2021-06-13 08:25:53,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 980 places, 1195 transitions, 43190 flow, removed 364 selfloop flow, removed 7 redundant places. [2021-06-13 08:25:53,638 INFO L241 Difference]: Finished difference. Result has 986 places, 1163 transitions, 40106 flow [2021-06-13 08:25:53,639 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=38699, PETRI_DIFFERENCE_MINUEND_PLACES=971, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1074, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=40106, PETRI_PLACES=986, PETRI_TRANSITIONS=1163} [2021-06-13 08:25:53,639 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 947 predicate places. [2021-06-13 08:25:53,639 INFO L482 AbstractCegarLoop]: Abstraction has has 986 places, 1163 transitions, 40106 flow [2021-06-13 08:25:53,639 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) [2021-06-13 08:25:53,639 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:25:53,639 INFO L255 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] [2021-06-13 08:25:53,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-13 08:25:53,639 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:25:53,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:25:53,640 INFO L82 PathProgramCache]: Analyzing trace with hash 195093314, now seen corresponding path program 133 times [2021-06-13 08:25:53,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:25:53,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554340902] [2021-06-13 08:25:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:25:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:25:53,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:53,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:53,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:53,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:53,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:53,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:53,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:53,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:25:53,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:53,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:53,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:53,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:25:53,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:53,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:25:53,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:25:53,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:25:53,704 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:25:53,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:25:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:25:53,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:25:53,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554340902] [2021-06-13 08:25:53,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554340902] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:25:53,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:25:53,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:25:53,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804550906] [2021-06-13 08:25:53,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:25:53,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:25:53,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:25:53,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:25:53,706 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:25:53,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 986 places, 1163 transitions, 40106 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) [2021-06-13 08:25:53,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:25:53,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:25:53,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:25:56,170 INFO L129 PetriNetUnfolder]: 1416/3494 cut-off events. [2021-06-13 08:25:56,170 INFO L130 PetriNetUnfolder]: For 496483/496483 co-relation queries the response was YES. [2021-06-13 08:25:56,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54906 conditions, 3494 events. 1416/3494 cut-off events. For 496483/496483 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 32092 event pairs, 77 based on Foata normal form. 1/3495 useless extension candidates. Maximal degree in co-relation 54392. Up to 2166 conditions per place. [2021-06-13 08:25:56,278 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1024 selfloop transitions, 158 changer transitions 9/1199 dead transitions. [2021-06-13 08:25:56,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 995 places, 1199 transitions, 44586 flow [2021-06-13 08:25:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:25:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:25:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-06-13 08:25:56,279 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-06-13 08:25:56,279 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-06-13 08:25:56,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-06-13 08:25:56,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:25:56,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-06-13 08:25:56,279 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) [2021-06-13 08:25:56,280 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) [2021-06-13 08:25:56,280 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) [2021-06-13 08:25:56,280 INFO L185 Difference]: Start difference. First operand has 986 places, 1163 transitions, 40106 flow. Second operand 10 states and 328 transitions. [2021-06-13 08:25:56,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 995 places, 1199 transitions, 44586 flow [2021-06-13 08:26:03,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 990 places, 1199 transitions, 43752 flow, removed 383 selfloop flow, removed 5 redundant places. [2021-06-13 08:26:03,130 INFO L241 Difference]: Finished difference. Result has 995 places, 1163 transitions, 40693 flow [2021-06-13 08:26:03,131 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=39274, PETRI_DIFFERENCE_MINUEND_PLACES=981, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1007, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=40693, PETRI_PLACES=995, PETRI_TRANSITIONS=1163} [2021-06-13 08:26:03,131 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 956 predicate places. [2021-06-13 08:26:03,131 INFO L482 AbstractCegarLoop]: Abstraction has has 995 places, 1163 transitions, 40693 flow [2021-06-13 08:26:03,131 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) [2021-06-13 08:26:03,131 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:26:03,131 INFO L255 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] [2021-06-13 08:26:03,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-13 08:26:03,131 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:26:03,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:26:03,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1285838674, now seen corresponding path program 134 times [2021-06-13 08:26:03,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:26:03,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911527469] [2021-06-13 08:26:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:26:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:26:03,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:03,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:03,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:03,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:03,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:03,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:03,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:03,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:03,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:03,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:26:03,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:03,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:03,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:03,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:03,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:03,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:03,214 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:26:03,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:26:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:26:03,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:26:03,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911527469] [2021-06-13 08:26:03,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911527469] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:26:03,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:26:03,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:26:03,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074975132] [2021-06-13 08:26:03,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:26:03,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:26:03,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:26:03,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:26:03,216 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:26:03,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 995 places, 1163 transitions, 40693 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) [2021-06-13 08:26:03,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:26:03,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:26:03,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:26:05,710 INFO L129 PetriNetUnfolder]: 1416/3508 cut-off events. [2021-06-13 08:26:05,711 INFO L130 PetriNetUnfolder]: For 535108/535108 co-relation queries the response was YES. [2021-06-13 08:26:05,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55812 conditions, 3508 events. 1416/3508 cut-off events. For 535108/535108 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 32244 event pairs, 58 based on Foata normal form. 1/3509 useless extension candidates. Maximal degree in co-relation 55294. Up to 2329 conditions per place. [2021-06-13 08:26:05,813 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1076 selfloop transitions, 108 changer transitions 7/1199 dead transitions. [2021-06-13 08:26:05,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1004 places, 1199 transitions, 45939 flow [2021-06-13 08:26:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:26:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:26:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2021-06-13 08:26:05,829 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2021-06-13 08:26:05,829 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 324 transitions. [2021-06-13 08:26:05,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 324 transitions. [2021-06-13 08:26:05,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:26:05,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 324 transitions. [2021-06-13 08:26:05,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:26:05,830 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) [2021-06-13 08:26:05,830 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) [2021-06-13 08:26:05,830 INFO L185 Difference]: Start difference. First operand has 995 places, 1163 transitions, 40693 flow. Second operand 10 states and 324 transitions. [2021-06-13 08:26:05,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1004 places, 1199 transitions, 45939 flow [2021-06-13 08:26:13,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 991 places, 1199 transitions, 44878 flow, removed 395 selfloop flow, removed 13 redundant places. [2021-06-13 08:26:13,308 INFO L241 Difference]: Finished difference. Result has 995 places, 1169 transitions, 41179 flow [2021-06-13 08:26:13,309 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=39646, PETRI_DIFFERENCE_MINUEND_PLACES=982, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1058, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=41179, PETRI_PLACES=995, PETRI_TRANSITIONS=1169} [2021-06-13 08:26:13,309 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 956 predicate places. [2021-06-13 08:26:13,309 INFO L482 AbstractCegarLoop]: Abstraction has has 995 places, 1169 transitions, 41179 flow [2021-06-13 08:26:13,309 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) [2021-06-13 08:26:13,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:26:13,309 INFO L255 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] [2021-06-13 08:26:13,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-13 08:26:13,310 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:26:13,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:26:13,310 INFO L82 PathProgramCache]: Analyzing trace with hash -823445954, now seen corresponding path program 135 times [2021-06-13 08:26:13,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:26:13,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478817822] [2021-06-13 08:26:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:26:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:26:13,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:13,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:13,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:13,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:13,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:13,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:13,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:13,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:13,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:13,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:26:13,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:13,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:13,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:13,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:13,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:13,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:13,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:26:13,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:26:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:26:13,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:26:13,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478817822] [2021-06-13 08:26:13,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478817822] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:26:13,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:26:13,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:26:13,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083312158] [2021-06-13 08:26:13,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:26:13,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:26:13,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:26:13,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:26:13,367 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:26:13,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 995 places, 1169 transitions, 41179 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) [2021-06-13 08:26:13,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:26:13,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:26:13,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:26:15,865 INFO L129 PetriNetUnfolder]: 1418/3508 cut-off events. [2021-06-13 08:26:15,865 INFO L130 PetriNetUnfolder]: For 539586/539586 co-relation queries the response was YES. [2021-06-13 08:26:15,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55810 conditions, 3508 events. 1418/3508 cut-off events. For 539586/539586 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 32224 event pairs, 44 based on Foata normal form. 1/3509 useless extension candidates. Maximal degree in co-relation 55292. Up to 2458 conditions per place. [2021-06-13 08:26:15,968 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1141 selfloop transitions, 50 changer transitions 3/1202 dead transitions. [2021-06-13 08:26:15,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1003 places, 1202 transitions, 45963 flow [2021-06-13 08:26:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:26:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:26:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2021-06-13 08:26:15,969 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2021-06-13 08:26:15,969 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 292 transitions. [2021-06-13 08:26:15,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 292 transitions. [2021-06-13 08:26:15,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:26:15,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 292 transitions. [2021-06-13 08:26:15,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:26:15,969 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) [2021-06-13 08:26:15,970 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) [2021-06-13 08:26:15,970 INFO L185 Difference]: Start difference. First operand has 995 places, 1169 transitions, 41179 flow. Second operand 9 states and 292 transitions. [2021-06-13 08:26:15,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1003 places, 1202 transitions, 45963 flow [2021-06-13 08:26:23,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 994 places, 1202 transitions, 44564 flow, removed 617 selfloop flow, removed 9 redundant places. [2021-06-13 08:26:23,614 INFO L241 Difference]: Finished difference. Result has 999 places, 1178 transitions, 41619 flow [2021-06-13 08:26:23,614 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=40198, PETRI_DIFFERENCE_MINUEND_PLACES=986, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41619, PETRI_PLACES=999, PETRI_TRANSITIONS=1178} [2021-06-13 08:26:23,614 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 960 predicate places. [2021-06-13 08:26:23,614 INFO L482 AbstractCegarLoop]: Abstraction has has 999 places, 1178 transitions, 41619 flow [2021-06-13 08:26:23,614 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) [2021-06-13 08:26:23,614 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:26:23,615 INFO L255 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] [2021-06-13 08:26:23,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-13 08:26:23,615 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:26:23,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:26:23,615 INFO L82 PathProgramCache]: Analyzing trace with hash -196092232, now seen corresponding path program 136 times [2021-06-13 08:26:23,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:26:23,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876411101] [2021-06-13 08:26:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:26:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:26:23,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:23,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:23,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:23,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:23,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:23,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:23,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:23,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:23,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:23,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:26:23,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:23,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:23,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:23,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:23,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:23,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:23,669 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:26:23,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:26:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:26:23,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:26:23,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876411101] [2021-06-13 08:26:23,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876411101] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:26:23,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:26:23,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:26:23,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640633132] [2021-06-13 08:26:23,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:26:23,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:26:23,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:26:23,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:26:23,672 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:26:23,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 999 places, 1178 transitions, 41619 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) [2021-06-13 08:26:23,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:26:23,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:26:23,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:26:26,145 INFO L129 PetriNetUnfolder]: 1420/3511 cut-off events. [2021-06-13 08:26:26,145 INFO L130 PetriNetUnfolder]: For 541757/541757 co-relation queries the response was YES. [2021-06-13 08:26:26,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55837 conditions, 3511 events. 1420/3511 cut-off events. For 541757/541757 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 32299 event pairs, 44 based on Foata normal form. 1/3512 useless extension candidates. Maximal degree in co-relation 55317. Up to 2460 conditions per place. [2021-06-13 08:26:26,322 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1147 selfloop transitions, 50 changer transitions 3/1208 dead transitions. [2021-06-13 08:26:26,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1007 places, 1208 transitions, 45939 flow [2021-06-13 08:26:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:26:26,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:26:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 293 transitions. [2021-06-13 08:26:26,323 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.73989898989899 [2021-06-13 08:26:26,323 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 293 transitions. [2021-06-13 08:26:26,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 293 transitions. [2021-06-13 08:26:26,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:26:26,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 293 transitions. [2021-06-13 08:26:26,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 32.55555555555556) internal successors, (293), 9 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:26:26,324 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) [2021-06-13 08:26:26,324 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) [2021-06-13 08:26:26,324 INFO L185 Difference]: Start difference. First operand has 999 places, 1178 transitions, 41619 flow. Second operand 9 states and 293 transitions. [2021-06-13 08:26:26,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1007 places, 1208 transitions, 45939 flow [2021-06-13 08:26:33,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1003 places, 1208 transitions, 45116 flow, removed 396 selfloop flow, removed 4 redundant places. [2021-06-13 08:26:33,752 INFO L241 Difference]: Finished difference. Result has 1007 places, 1183 transitions, 42133 flow [2021-06-13 08:26:33,777 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=40796, PETRI_DIFFERENCE_MINUEND_PLACES=995, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=42133, PETRI_PLACES=1007, PETRI_TRANSITIONS=1183} [2021-06-13 08:26:33,777 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 968 predicate places. [2021-06-13 08:26:33,777 INFO L482 AbstractCegarLoop]: Abstraction has has 1007 places, 1183 transitions, 42133 flow [2021-06-13 08:26:33,777 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) [2021-06-13 08:26:33,777 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:26:33,777 INFO L255 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] [2021-06-13 08:26:33,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-13 08:26:33,778 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:26:33,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:26:33,778 INFO L82 PathProgramCache]: Analyzing trace with hash -435662760, now seen corresponding path program 137 times [2021-06-13 08:26:33,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:26:33,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695621632] [2021-06-13 08:26:33,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:26:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:26:33,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:33,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:33,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:33,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:33,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:33,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:33,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:33,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:33,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:33,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:26:33,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:33,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:33,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:33,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:33,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:33,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:33,893 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:26:33,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:26:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:26:33,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:26:33,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695621632] [2021-06-13 08:26:33,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695621632] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:26:33,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:26:33,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:26:33,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558911349] [2021-06-13 08:26:33,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:26:33,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:26:33,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:26:33,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:26:33,896 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:26:33,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1007 places, 1183 transitions, 42133 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) [2021-06-13 08:26:33,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:26:33,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:26:33,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:26:36,654 INFO L129 PetriNetUnfolder]: 1422/3527 cut-off events. [2021-06-13 08:26:36,655 INFO L130 PetriNetUnfolder]: For 556203/556203 co-relation queries the response was YES. [2021-06-13 08:26:36,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56388 conditions, 3527 events. 1422/3527 cut-off events. For 556203/556203 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 32578 event pairs, 49 based on Foata normal form. 1/3528 useless extension candidates. Maximal degree in co-relation 55865. Up to 2450 conditions per place. [2021-06-13 08:26:36,766 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1153 selfloop transitions, 50 changer transitions 4/1215 dead transitions. [2021-06-13 08:26:36,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1016 places, 1215 transitions, 46679 flow [2021-06-13 08:26:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:26:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:26:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2021-06-13 08:26:36,767 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7340909090909091 [2021-06-13 08:26:36,767 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 323 transitions. [2021-06-13 08:26:36,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 323 transitions. [2021-06-13 08:26:36,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:26:36,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 323 transitions. [2021-06-13 08:26:36,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:26:36,767 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) [2021-06-13 08:26:36,767 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) [2021-06-13 08:26:36,767 INFO L185 Difference]: Start difference. First operand has 1007 places, 1183 transitions, 42133 flow. Second operand 10 states and 323 transitions. [2021-06-13 08:26:36,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1016 places, 1215 transitions, 46679 flow [2021-06-13 08:26:44,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1013 places, 1215 transitions, 45887 flow, removed 384 selfloop flow, removed 3 redundant places. [2021-06-13 08:26:44,508 INFO L241 Difference]: Finished difference. Result has 1017 places, 1188 transitions, 42655 flow [2021-06-13 08:26:44,509 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=41341, PETRI_DIFFERENCE_MINUEND_PLACES=1004, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=42655, PETRI_PLACES=1017, PETRI_TRANSITIONS=1188} [2021-06-13 08:26:44,509 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 978 predicate places. [2021-06-13 08:26:44,509 INFO L482 AbstractCegarLoop]: Abstraction has has 1017 places, 1188 transitions, 42655 flow [2021-06-13 08:26:44,509 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) [2021-06-13 08:26:44,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:26:44,509 INFO L255 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] [2021-06-13 08:26:44,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-13 08:26:44,509 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:26:44,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:26:44,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1584429514, now seen corresponding path program 138 times [2021-06-13 08:26:44,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:26:44,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290998067] [2021-06-13 08:26:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:26:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:26:44,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:44,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:44,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:44,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:44,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:44,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:44,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:44,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:44,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:44,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:26:44,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:44,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:44,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:44,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:44,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:44,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:44,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:26:44,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:26:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:26:44,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:26:44,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290998067] [2021-06-13 08:26:44,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290998067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:26:44,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:26:44,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:26:44,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472923794] [2021-06-13 08:26:44,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:26:44,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:26:44,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:26:44,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:26:44,574 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:26:44,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1017 places, 1188 transitions, 42655 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) [2021-06-13 08:26:44,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:26:44,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:26:44,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:26:47,216 INFO L129 PetriNetUnfolder]: 1424/3538 cut-off events. [2021-06-13 08:26:47,217 INFO L130 PetriNetUnfolder]: For 569484/569484 co-relation queries the response was YES. [2021-06-13 08:26:47,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56852 conditions, 3538 events. 1424/3538 cut-off events. For 569484/569484 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 32702 event pairs, 49 based on Foata normal form. 1/3539 useless extension candidates. Maximal degree in co-relation 56325. Up to 2455 conditions per place. [2021-06-13 08:26:47,329 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1158 selfloop transitions, 50 changer transitions 4/1220 dead transitions. [2021-06-13 08:26:47,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1026 places, 1220 transitions, 47233 flow [2021-06-13 08:26:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:26:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:26:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2021-06-13 08:26:47,330 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7340909090909091 [2021-06-13 08:26:47,330 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 323 transitions. [2021-06-13 08:26:47,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 323 transitions. [2021-06-13 08:26:47,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:26:47,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 323 transitions. [2021-06-13 08:26:47,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.3) internal successors, (323), 10 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:26:47,331 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) [2021-06-13 08:26:47,331 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) [2021-06-13 08:26:47,331 INFO L185 Difference]: Start difference. First operand has 1017 places, 1188 transitions, 42655 flow. Second operand 10 states and 323 transitions. [2021-06-13 08:26:47,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1026 places, 1220 transitions, 47233 flow [2021-06-13 08:26:55,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1024 places, 1220 transitions, 46452 flow, removed 381 selfloop flow, removed 2 redundant places. [2021-06-13 08:26:55,108 INFO L241 Difference]: Finished difference. Result has 1028 places, 1193 transitions, 43200 flow [2021-06-13 08:26:55,109 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=41874, PETRI_DIFFERENCE_MINUEND_PLACES=1015, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=43200, PETRI_PLACES=1028, PETRI_TRANSITIONS=1193} [2021-06-13 08:26:55,109 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 989 predicate places. [2021-06-13 08:26:55,109 INFO L482 AbstractCegarLoop]: Abstraction has has 1028 places, 1193 transitions, 43200 flow [2021-06-13 08:26:55,109 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) [2021-06-13 08:26:55,109 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:26:55,109 INFO L255 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] [2021-06-13 08:26:55,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-13 08:26:55,110 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:26:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:26:55,110 INFO L82 PathProgramCache]: Analyzing trace with hash 10236478, now seen corresponding path program 139 times [2021-06-13 08:26:55,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:26:55,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430067321] [2021-06-13 08:26:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:26:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:26:55,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:55,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:55,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:55,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:55,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:55,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:55,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:55,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:55,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:55,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:26:55,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:55,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:26:55,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:55,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:26:55,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:26:55,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:26:55,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:26:55,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:26:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:26:55,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:26:55,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430067321] [2021-06-13 08:26:55,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430067321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:26:55,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:26:55,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:26:55,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150985542] [2021-06-13 08:26:55,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:26:55,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:26:55,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:26:55,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:26:55,183 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:26:55,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1028 places, 1193 transitions, 43200 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) [2021-06-13 08:26:55,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:26:55,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:26:55,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:26:57,786 INFO L129 PetriNetUnfolder]: 1429/3540 cut-off events. [2021-06-13 08:26:57,787 INFO L130 PetriNetUnfolder]: For 577273/577273 co-relation queries the response was YES. [2021-06-13 08:26:57,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57200 conditions, 3540 events. 1429/3540 cut-off events. For 577273/577273 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 32664 event pairs, 71 based on Foata normal form. 1/3541 useless extension candidates. Maximal degree in co-relation 56667. Up to 2297 conditions per place. [2021-06-13 08:26:57,897 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1119 selfloop transitions, 100 changer transitions 6/1233 dead transitions. [2021-06-13 08:26:57,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1037 places, 1233 transitions, 47588 flow [2021-06-13 08:26:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:26:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:26:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 326 transitions. [2021-06-13 08:26:57,898 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.740909090909091 [2021-06-13 08:26:57,898 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 326 transitions. [2021-06-13 08:26:57,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 326 transitions. [2021-06-13 08:26:57,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:26:57,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 326 transitions. [2021-06-13 08:26:57,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.6) internal successors, (326), 10 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:26:57,899 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) [2021-06-13 08:26:57,899 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) [2021-06-13 08:26:57,899 INFO L185 Difference]: Start difference. First operand has 1028 places, 1193 transitions, 43200 flow. Second operand 10 states and 326 transitions. [2021-06-13 08:26:57,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1037 places, 1233 transitions, 47588 flow [2021-06-13 08:27:06,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1032 places, 1233 transitions, 46775 flow, removed 385 selfloop flow, removed 5 redundant places. [2021-06-13 08:27:06,131 INFO L241 Difference]: Finished difference. Result has 1038 places, 1201 transitions, 43774 flow [2021-06-13 08:27:06,132 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=42387, PETRI_DIFFERENCE_MINUEND_PLACES=1023, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1094, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=43774, PETRI_PLACES=1038, PETRI_TRANSITIONS=1201} [2021-06-13 08:27:06,132 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 999 predicate places. [2021-06-13 08:27:06,132 INFO L482 AbstractCegarLoop]: Abstraction has has 1038 places, 1201 transitions, 43774 flow [2021-06-13 08:27:06,132 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) [2021-06-13 08:27:06,132 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:06,132 INFO L255 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] [2021-06-13 08:27:06,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-13 08:27:06,132 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:27:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:06,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1352204188, now seen corresponding path program 140 times [2021-06-13 08:27:06,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:06,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854104160] [2021-06-13 08:27:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:06,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:06,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:06,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:06,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:06,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:27:06,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:06,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:06,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:06,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:06,204 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:27:06,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:27:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:06,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:06,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854104160] [2021-06-13 08:27:06,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854104160] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:06,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:06,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:27:06,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514204005] [2021-06-13 08:27:06,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:27:06,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:06,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:27:06,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:27:06,208 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:27:06,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1038 places, 1201 transitions, 43774 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) [2021-06-13 08:27:06,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:06,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:27:06,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:08,975 INFO L129 PetriNetUnfolder]: 1430/3549 cut-off events. [2021-06-13 08:27:08,975 INFO L130 PetriNetUnfolder]: For 582928/582928 co-relation queries the response was YES. [2021-06-13 08:27:09,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57715 conditions, 3549 events. 1430/3549 cut-off events. For 582928/582928 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 32782 event pairs, 57 based on Foata normal form. 1/3550 useless extension candidates. Maximal degree in co-relation 57177. Up to 2437 conditions per place. [2021-06-13 08:27:09,100 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1172 selfloop transitions, 47 changer transitions 5/1232 dead transitions. [2021-06-13 08:27:09,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1047 places, 1232 transitions, 47980 flow [2021-06-13 08:27:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:27:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:27:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2021-06-13 08:27:09,100 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2021-06-13 08:27:09,101 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 324 transitions. [2021-06-13 08:27:09,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 324 transitions. [2021-06-13 08:27:09,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:09,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 324 transitions. [2021-06-13 08:27:09,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:09,101 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) [2021-06-13 08:27:09,101 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) [2021-06-13 08:27:09,101 INFO L185 Difference]: Start difference. First operand has 1038 places, 1201 transitions, 43774 flow. Second operand 10 states and 324 transitions. [2021-06-13 08:27:09,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1047 places, 1232 transitions, 47980 flow [2021-06-13 08:27:17,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1037 places, 1232 transitions, 47243 flow, removed 314 selfloop flow, removed 10 redundant places. [2021-06-13 08:27:17,436 INFO L241 Difference]: Finished difference. Result has 1041 places, 1203 transitions, 44095 flow [2021-06-13 08:27:17,436 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=43041, PETRI_DIFFERENCE_MINUEND_PLACES=1028, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=44095, PETRI_PLACES=1041, PETRI_TRANSITIONS=1203} [2021-06-13 08:27:17,437 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1002 predicate places. [2021-06-13 08:27:17,437 INFO L482 AbstractCegarLoop]: Abstraction has has 1041 places, 1203 transitions, 44095 flow [2021-06-13 08:27:17,437 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) [2021-06-13 08:27:17,437 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:17,437 INFO L255 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] [2021-06-13 08:27:17,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-13 08:27:17,437 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:27:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:17,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1192572776, now seen corresponding path program 141 times [2021-06-13 08:27:17,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:17,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066365364] [2021-06-13 08:27:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:17,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:17,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:17,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:17,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:17,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:17,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:17,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:17,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:17,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:17,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:27:17,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:17,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:17,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:17,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:17,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:17,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:17,503 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:27:17,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:27:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:17,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:17,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066365364] [2021-06-13 08:27:17,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066365364] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:17,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:17,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:27:17,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11729464] [2021-06-13 08:27:17,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:27:17,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:17,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:27:17,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:27:17,506 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:27:17,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1041 places, 1203 transitions, 44095 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) [2021-06-13 08:27:17,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:17,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:27:17,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:20,313 INFO L129 PetriNetUnfolder]: 1432/3546 cut-off events. [2021-06-13 08:27:20,313 INFO L130 PetriNetUnfolder]: For 593909/593909 co-relation queries the response was YES. [2021-06-13 08:27:20,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57943 conditions, 3546 events. 1432/3546 cut-off events. For 593909/593909 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 32727 event pairs, 71 based on Foata normal form. 1/3547 useless extension candidates. Maximal degree in co-relation 57404. Up to 2316 conditions per place. [2021-06-13 08:27:20,424 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1129 selfloop transitions, 95 changer transitions 5/1237 dead transitions. [2021-06-13 08:27:20,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1050 places, 1237 transitions, 48371 flow [2021-06-13 08:27:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:27:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:27:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2021-06-13 08:27:20,437 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-06-13 08:27:20,437 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2021-06-13 08:27:20,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2021-06-13 08:27:20,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:20,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2021-06-13 08:27:20,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:20,438 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) [2021-06-13 08:27:20,438 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) [2021-06-13 08:27:20,438 INFO L185 Difference]: Start difference. First operand has 1041 places, 1203 transitions, 44095 flow. Second operand 10 states and 325 transitions. [2021-06-13 08:27:20,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1050 places, 1237 transitions, 48371 flow [2021-06-13 08:27:30,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1040 places, 1237 transitions, 47640 flow, removed 307 selfloop flow, removed 10 redundant places. [2021-06-13 08:27:30,127 INFO L241 Difference]: Finished difference. Result has 1045 places, 1207 transitions, 44634 flow [2021-06-13 08:27:30,128 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=43376, PETRI_DIFFERENCE_MINUEND_PLACES=1031, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=44634, PETRI_PLACES=1045, PETRI_TRANSITIONS=1207} [2021-06-13 08:27:30,128 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1006 predicate places. [2021-06-13 08:27:30,128 INFO L482 AbstractCegarLoop]: Abstraction has has 1045 places, 1207 transitions, 44634 flow [2021-06-13 08:27:30,128 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) [2021-06-13 08:27:30,128 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:30,129 INFO L255 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] [2021-06-13 08:27:30,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-13 08:27:30,129 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:27:30,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:30,129 INFO L82 PathProgramCache]: Analyzing trace with hash -919369554, now seen corresponding path program 142 times [2021-06-13 08:27:30,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:30,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962840348] [2021-06-13 08:27:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:30,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:30,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:30,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:30,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:30,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:30,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:30,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:30,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:30,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:30,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:27:30,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:30,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:30,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:30,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:30,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:30,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:30,198 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:27:30,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:27:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:30,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:30,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962840348] [2021-06-13 08:27:30,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962840348] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:30,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:30,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:27:30,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246632067] [2021-06-13 08:27:30,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:27:30,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:30,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:27:30,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:27:30,201 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:27:30,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1045 places, 1207 transitions, 44634 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) [2021-06-13 08:27:30,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:30,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:27:30,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:32,903 INFO L129 PetriNetUnfolder]: 1433/3556 cut-off events. [2021-06-13 08:27:32,903 INFO L130 PetriNetUnfolder]: For 599362/599362 co-relation queries the response was YES. [2021-06-13 08:27:33,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58345 conditions, 3556 events. 1433/3556 cut-off events. For 599362/599362 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 32843 event pairs, 57 based on Foata normal form. 1/3557 useless extension candidates. Maximal degree in co-relation 57805. Up to 2443 conditions per place. [2021-06-13 08:27:33,106 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1179 selfloop transitions, 45 changer transitions 6/1238 dead transitions. [2021-06-13 08:27:33,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1054 places, 1238 transitions, 48872 flow [2021-06-13 08:27:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:27:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:27:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2021-06-13 08:27:33,107 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2021-06-13 08:27:33,107 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 324 transitions. [2021-06-13 08:27:33,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 324 transitions. [2021-06-13 08:27:33,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:33,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 324 transitions. [2021-06-13 08:27:33,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.4) internal successors, (324), 10 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:33,108 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) [2021-06-13 08:27:33,108 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) [2021-06-13 08:27:33,108 INFO L185 Difference]: Start difference. First operand has 1045 places, 1207 transitions, 44634 flow. Second operand 10 states and 324 transitions. [2021-06-13 08:27:33,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1054 places, 1238 transitions, 48872 flow [2021-06-13 08:27:42,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1046 places, 1238 transitions, 48152 flow, removed 303 selfloop flow, removed 8 redundant places. [2021-06-13 08:27:42,138 INFO L241 Difference]: Finished difference. Result has 1050 places, 1208 transitions, 44939 flow [2021-06-13 08:27:42,138 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=43918, PETRI_DIFFERENCE_MINUEND_PLACES=1037, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=44939, PETRI_PLACES=1050, PETRI_TRANSITIONS=1208} [2021-06-13 08:27:42,139 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1011 predicate places. [2021-06-13 08:27:42,139 INFO L482 AbstractCegarLoop]: Abstraction has has 1050 places, 1208 transitions, 44939 flow [2021-06-13 08:27:42,139 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) [2021-06-13 08:27:42,139 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:42,139 INFO L255 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] [2021-06-13 08:27:42,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-13 08:27:42,139 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:27:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash 740183110, now seen corresponding path program 143 times [2021-06-13 08:27:42,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:42,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373972436] [2021-06-13 08:27:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:42,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:42,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:42,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:42,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:42,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:42,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:42,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:42,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:42,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:42,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-13 08:27:42,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:42,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:27:42,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:42,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:42,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:42,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:42,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:27:42,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:27:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:42,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:42,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373972436] [2021-06-13 08:27:42,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373972436] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:42,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:42,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:27:42,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322340834] [2021-06-13 08:27:42,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:27:42,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:42,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:27:42,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:27:42,217 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:27:42,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1050 places, 1208 transitions, 44939 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) [2021-06-13 08:27:42,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:42,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:27:42,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:45,024 INFO L129 PetriNetUnfolder]: 1433/3550 cut-off events. [2021-06-13 08:27:45,025 INFO L130 PetriNetUnfolder]: For 579097/579097 co-relation queries the response was YES. [2021-06-13 08:27:45,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57934 conditions, 3550 events. 1433/3550 cut-off events. For 579097/579097 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 32774 event pairs, 69 based on Foata normal form. 1/3551 useless extension candidates. Maximal degree in co-relation 57392. Up to 2416 conditions per place. [2021-06-13 08:27:45,190 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1179 selfloop transitions, 44 changer transitions 14/1245 dead transitions. [2021-06-13 08:27:45,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1059 places, 1245 transitions, 49288 flow [2021-06-13 08:27:45,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:27:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:27:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2021-06-13 08:27:45,191 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2021-06-13 08:27:45,191 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 325 transitions. [2021-06-13 08:27:45,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 325 transitions. [2021-06-13 08:27:45,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:45,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 325 transitions. [2021-06-13 08:27:45,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:27:45,192 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) [2021-06-13 08:27:45,192 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) [2021-06-13 08:27:45,192 INFO L185 Difference]: Start difference. First operand has 1050 places, 1208 transitions, 44939 flow. Second operand 10 states and 325 transitions. [2021-06-13 08:27:45,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1059 places, 1245 transitions, 49288 flow [2021-06-13 08:27:54,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1048 places, 1245 transitions, 48570 flow, removed 306 selfloop flow, removed 11 redundant places. [2021-06-13 08:27:54,119 INFO L241 Difference]: Finished difference. Result has 1054 places, 1211 transitions, 44702 flow [2021-06-13 08:27:54,120 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=44229, PETRI_DIFFERENCE_MINUEND_PLACES=1039, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=44702, PETRI_PLACES=1054, PETRI_TRANSITIONS=1211} [2021-06-13 08:27:54,121 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1015 predicate places. [2021-06-13 08:27:54,121 INFO L482 AbstractCegarLoop]: Abstraction has has 1054 places, 1211 transitions, 44702 flow [2021-06-13 08:27:54,121 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) [2021-06-13 08:27:54,121 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:27:54,121 INFO L255 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] [2021-06-13 08:27:54,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-13 08:27:54,121 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:27:54,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:27:54,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1734367350, now seen corresponding path program 144 times [2021-06-13 08:27:54,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:27:54,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008626551] [2021-06-13 08:27:54,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:27:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:27:54,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:54,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:54,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:54,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:54,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:54,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:54,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:54,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:54,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:54,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:54,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:54,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:54,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:54,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:27:54,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:27:54,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:27:54,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:27:54,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:27:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:27:54,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:27:54,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008626551] [2021-06-13 08:27:54,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008626551] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:27:54,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:27:54,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:27:54,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574051499] [2021-06-13 08:27:54,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:27:54,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:27:54,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:27:54,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:27:54,182 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:27:54,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1054 places, 1211 transitions, 44702 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) [2021-06-13 08:27:54,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:27:54,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:27:54,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:27:56,889 INFO L129 PetriNetUnfolder]: 1424/3517 cut-off events. [2021-06-13 08:27:56,890 INFO L130 PetriNetUnfolder]: For 577621/577621 co-relation queries the response was YES. [2021-06-13 08:27:56,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56836 conditions, 3517 events. 1424/3517 cut-off events. For 577621/577621 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 32375 event pairs, 128 based on Foata normal form. 1/3518 useless extension candidates. Maximal degree in co-relation 56311. Up to 2032 conditions per place. [2021-06-13 08:27:56,997 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1116 selfloop transitions, 89 changer transitions 35/1248 dead transitions. [2021-06-13 08:27:56,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1061 places, 1248 transitions, 49158 flow [2021-06-13 08:27:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:27:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:27:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-06-13 08:27:56,998 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-06-13 08:27:56,998 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-06-13 08:27:56,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-06-13 08:27:56,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:27:56,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-06-13 08:27:56,998 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) [2021-06-13 08:27:56,999 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) [2021-06-13 08:27:56,999 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) [2021-06-13 08:27:56,999 INFO L185 Difference]: Start difference. First operand has 1054 places, 1211 transitions, 44702 flow. Second operand 9 states and 301 transitions. [2021-06-13 08:27:56,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1061 places, 1248 transitions, 49158 flow [2021-06-13 08:28:05,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1037 places, 1248 transitions, 36620 flow, removed 6164 selfloop flow, removed 24 redundant places. [2021-06-13 08:28:05,147 INFO L241 Difference]: Finished difference. Result has 1044 places, 1184 transitions, 31764 flow [2021-06-13 08:28:05,147 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=32168, PETRI_DIFFERENCE_MINUEND_PLACES=1029, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31764, PETRI_PLACES=1044, PETRI_TRANSITIONS=1184} [2021-06-13 08:28:05,147 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1005 predicate places. [2021-06-13 08:28:05,147 INFO L482 AbstractCegarLoop]: Abstraction has has 1044 places, 1184 transitions, 31764 flow [2021-06-13 08:28:05,148 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) [2021-06-13 08:28:05,148 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:28:05,148 INFO L255 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] [2021-06-13 08:28:05,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-13 08:28:05,148 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:28:05,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:28:05,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2075452172, now seen corresponding path program 145 times [2021-06-13 08:28:05,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:28:05,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368733471] [2021-06-13 08:28:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:28:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:28:05,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:05,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:05,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:05,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:05,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:05,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:05,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:05,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:05,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:05,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:05,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:05,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:05,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:05,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:05,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:05,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:05,191 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:28:05,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:28:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:28:05,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:28:05,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368733471] [2021-06-13 08:28:05,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368733471] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:28:05,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:28:05,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:28:05,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114826001] [2021-06-13 08:28:05,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:28:05,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:28:05,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:28:05,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:28:05,193 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:28:05,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1044 places, 1184 transitions, 31764 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) [2021-06-13 08:28:05,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:28:05,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:28:05,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:28:07,414 INFO L129 PetriNetUnfolder]: 1384/3447 cut-off events. [2021-06-13 08:28:07,414 INFO L130 PetriNetUnfolder]: For 524252/524252 co-relation queries the response was YES. [2021-06-13 08:28:07,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51468 conditions, 3447 events. 1384/3447 cut-off events. For 524252/524252 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 31854 event pairs, 79 based on Foata normal form. 1/3448 useless extension candidates. Maximal degree in co-relation 50995. Up to 2165 conditions per place. [2021-06-13 08:28:07,525 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1137 selfloop transitions, 70 changer transitions 6/1221 dead transitions. [2021-06-13 08:28:07,526 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1051 places, 1221 transitions, 35988 flow [2021-06-13 08:28:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:28:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:28:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2021-06-13 08:28:07,526 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2021-06-13 08:28:07,526 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 268 transitions. [2021-06-13 08:28:07,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 268 transitions. [2021-06-13 08:28:07,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:28:07,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 268 transitions. [2021-06-13 08:28:07,527 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) [2021-06-13 08:28:07,527 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) [2021-06-13 08:28:07,527 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) [2021-06-13 08:28:07,527 INFO L185 Difference]: Start difference. First operand has 1044 places, 1184 transitions, 31764 flow. Second operand 8 states and 268 transitions. [2021-06-13 08:28:07,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1051 places, 1221 transitions, 35988 flow [2021-06-13 08:28:14,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1005 places, 1221 transitions, 35145 flow, removed 116 selfloop flow, removed 46 redundant places. [2021-06-13 08:28:14,936 INFO L241 Difference]: Finished difference. Result has 1010 places, 1190 transitions, 32176 flow [2021-06-13 08:28:14,937 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31021, PETRI_DIFFERENCE_MINUEND_PLACES=998, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=32176, PETRI_PLACES=1010, PETRI_TRANSITIONS=1190} [2021-06-13 08:28:14,937 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 971 predicate places. [2021-06-13 08:28:14,937 INFO L482 AbstractCegarLoop]: Abstraction has has 1010 places, 1190 transitions, 32176 flow [2021-06-13 08:28:14,937 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) [2021-06-13 08:28:14,937 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:28:14,937 INFO L255 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] [2021-06-13 08:28:14,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-13 08:28:14,937 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:28:14,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:28:14,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1122823070, now seen corresponding path program 146 times [2021-06-13 08:28:14,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:28:14,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042517589] [2021-06-13 08:28:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:28:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:28:14,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:14,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:14,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:14,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:14,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:14,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:14,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:14,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:14,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:14,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:28:14,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:28:14,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:28:14,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:28:14,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042517589] [2021-06-13 08:28:14,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042517589] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:28:14,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:28:14,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:28:14,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354704805] [2021-06-13 08:28:14,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:28:14,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:28:14,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:28:14,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:28:14,982 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:28:14,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1010 places, 1190 transitions, 32176 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) [2021-06-13 08:28:14,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:28:14,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:28:14,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:28:17,154 INFO L129 PetriNetUnfolder]: 1387/3470 cut-off events. [2021-06-13 08:28:17,154 INFO L130 PetriNetUnfolder]: For 498766/498766 co-relation queries the response was YES. [2021-06-13 08:28:17,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50801 conditions, 3470 events. 1387/3470 cut-off events. For 498766/498766 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 32159 event pairs, 72 based on Foata normal form. 1/3471 useless extension candidates. Maximal degree in co-relation 50344. Up to 2256 conditions per place. [2021-06-13 08:28:17,262 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1162 selfloop transitions, 48 changer transitions 7/1225 dead transitions. [2021-06-13 08:28:17,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1017 places, 1225 transitions, 35954 flow [2021-06-13 08:28:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:28:17,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:28:17,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2021-06-13 08:28:17,263 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7642045454545454 [2021-06-13 08:28:17,263 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 269 transitions. [2021-06-13 08:28:17,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 269 transitions. [2021-06-13 08:28:17,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:28:17,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 269 transitions. [2021-06-13 08:28:17,263 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) [2021-06-13 08:28:17,263 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) [2021-06-13 08:28:17,263 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) [2021-06-13 08:28:17,263 INFO L185 Difference]: Start difference. First operand has 1010 places, 1190 transitions, 32176 flow. Second operand 8 states and 269 transitions. [2021-06-13 08:28:17,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1017 places, 1225 transitions, 35954 flow [2021-06-13 08:28:25,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1012 places, 1225 transitions, 35116 flow, removed 387 selfloop flow, removed 5 redundant places. [2021-06-13 08:28:25,686 INFO L241 Difference]: Finished difference. Result has 1017 places, 1192 transitions, 31885 flow [2021-06-13 08:28:25,686 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31340, PETRI_DIFFERENCE_MINUEND_PLACES=1005, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=31885, PETRI_PLACES=1017, PETRI_TRANSITIONS=1192} [2021-06-13 08:28:25,686 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 978 predicate places. [2021-06-13 08:28:25,686 INFO L482 AbstractCegarLoop]: Abstraction has has 1017 places, 1192 transitions, 31885 flow [2021-06-13 08:28:25,686 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) [2021-06-13 08:28:25,686 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:28:25,687 INFO L255 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] [2021-06-13 08:28:25,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-13 08:28:25,687 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:28:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:28:25,687 INFO L82 PathProgramCache]: Analyzing trace with hash -874303242, now seen corresponding path program 147 times [2021-06-13 08:28:25,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:28:25,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391082303] [2021-06-13 08:28:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:28:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:28:25,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:25,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:25,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:25,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:25,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:25,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:25,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:25,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:25,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:25,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:25,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:25,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:25,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:25,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:25,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:25,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:25,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:28:25,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:28:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:28:25,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:28:25,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391082303] [2021-06-13 08:28:25,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391082303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:28:25,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:28:25,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:28:25,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792105520] [2021-06-13 08:28:25,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:28:25,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:28:25,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:28:25,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:28:25,740 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:28:25,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1017 places, 1192 transitions, 31885 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) [2021-06-13 08:28:25,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:28:25,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:28:25,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:28:27,990 INFO L129 PetriNetUnfolder]: 1380/3458 cut-off events. [2021-06-13 08:28:27,990 INFO L130 PetriNetUnfolder]: For 430390/430390 co-relation queries the response was YES. [2021-06-13 08:28:28,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49344 conditions, 3458 events. 1380/3458 cut-off events. For 430390/430390 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 32090 event pairs, 70 based on Foata normal form. 1/3459 useless extension candidates. Maximal degree in co-relation 48883. Up to 2191 conditions per place. [2021-06-13 08:28:28,095 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1140 selfloop transitions, 71 changer transitions 8/1227 dead transitions. [2021-06-13 08:28:28,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1025 places, 1227 transitions, 36061 flow [2021-06-13 08:28:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:28:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:28:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:28:28,096 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:28:28,096 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:28:28,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:28:28,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:28:28,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:28:28,096 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) [2021-06-13 08:28:28,097 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) [2021-06-13 08:28:28,097 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) [2021-06-13 08:28:28,097 INFO L185 Difference]: Start difference. First operand has 1017 places, 1192 transitions, 31885 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:28:28,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1025 places, 1227 transitions, 36061 flow [2021-06-13 08:28:35,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1020 places, 1227 transitions, 35655 flow, removed 179 selfloop flow, removed 5 redundant places. [2021-06-13 08:28:35,308 INFO L241 Difference]: Finished difference. Result has 1026 places, 1191 transitions, 31867 flow [2021-06-13 08:28:35,309 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31483, PETRI_DIFFERENCE_MINUEND_PLACES=1012, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31867, PETRI_PLACES=1026, PETRI_TRANSITIONS=1191} [2021-06-13 08:28:35,309 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 987 predicate places. [2021-06-13 08:28:35,309 INFO L482 AbstractCegarLoop]: Abstraction has has 1026 places, 1191 transitions, 31867 flow [2021-06-13 08:28:35,309 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) [2021-06-13 08:28:35,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:28:35,309 INFO L255 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] [2021-06-13 08:28:35,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-13 08:28:35,309 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:28:35,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:28:35,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1035216374, now seen corresponding path program 148 times [2021-06-13 08:28:35,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:28:35,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147836193] [2021-06-13 08:28:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:28:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:28:35,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:35,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:35,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:35,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:35,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:35,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:35,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:35,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:35,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:35,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:35,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:35,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:35,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:35,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:35,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:35,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:35,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:28:35,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:28:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:28:35,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:28:35,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147836193] [2021-06-13 08:28:35,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147836193] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:28:35,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:28:35,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:28:35,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456357481] [2021-06-13 08:28:35,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:28:35,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:28:35,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:28:35,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:28:35,367 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:28:35,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1026 places, 1191 transitions, 31867 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) [2021-06-13 08:28:35,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:28:35,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:28:35,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:28:37,610 INFO L129 PetriNetUnfolder]: 1378/3451 cut-off events. [2021-06-13 08:28:37,610 INFO L130 PetriNetUnfolder]: For 418336/418336 co-relation queries the response was YES. [2021-06-13 08:28:37,767 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49195 conditions, 3451 events. 1378/3451 cut-off events. For 418336/418336 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 32031 event pairs, 76 based on Foata normal form. 1/3452 useless extension candidates. Maximal degree in co-relation 48729. Up to 2077 conditions per place. [2021-06-13 08:28:37,784 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1102 selfloop transitions, 101 changer transitions 16/1227 dead transitions. [2021-06-13 08:28:37,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1034 places, 1227 transitions, 36329 flow [2021-06-13 08:28:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:28:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:28:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-06-13 08:28:37,785 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-06-13 08:28:37,785 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-06-13 08:28:37,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-06-13 08:28:37,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:28:37,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-06-13 08:28:37,785 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) [2021-06-13 08:28:37,785 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) [2021-06-13 08:28:37,785 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) [2021-06-13 08:28:37,785 INFO L185 Difference]: Start difference. First operand has 1026 places, 1191 transitions, 31867 flow. Second operand 9 states and 299 transitions. [2021-06-13 08:28:37,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1034 places, 1227 transitions, 36329 flow [2021-06-13 08:28:45,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1022 places, 1227 transitions, 35919 flow, removed 113 selfloop flow, removed 12 redundant places. [2021-06-13 08:28:45,347 INFO L241 Difference]: Finished difference. Result has 1029 places, 1184 transitions, 31835 flow [2021-06-13 08:28:45,348 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31483, PETRI_DIFFERENCE_MINUEND_PLACES=1014, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=31835, PETRI_PLACES=1029, PETRI_TRANSITIONS=1184} [2021-06-13 08:28:45,348 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 990 predicate places. [2021-06-13 08:28:45,348 INFO L482 AbstractCegarLoop]: Abstraction has has 1029 places, 1184 transitions, 31835 flow [2021-06-13 08:28:45,348 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) [2021-06-13 08:28:45,348 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:28:45,348 INFO L255 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] [2021-06-13 08:28:45,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-13 08:28:45,348 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:28:45,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:28:45,348 INFO L82 PathProgramCache]: Analyzing trace with hash 791208368, now seen corresponding path program 149 times [2021-06-13 08:28:45,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:28:45,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123412038] [2021-06-13 08:28:45,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:28:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:28:45,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:45,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:45,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:45,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:45,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:45,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:45,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:45,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:45,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:45,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:45,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:45,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:45,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:45,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:45,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:45,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:45,397 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:28:45,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:28:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:28:45,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:28:45,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123412038] [2021-06-13 08:28:45,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123412038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:28:45,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:28:45,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:28:45,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527704639] [2021-06-13 08:28:45,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:28:45,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:28:45,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:28:45,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:28:45,401 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:28:45,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1029 places, 1184 transitions, 31835 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) [2021-06-13 08:28:45,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:28:45,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:28:45,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:28:47,686 INFO L129 PetriNetUnfolder]: 1379/3453 cut-off events. [2021-06-13 08:28:47,686 INFO L130 PetriNetUnfolder]: For 477362/477362 co-relation queries the response was YES. [2021-06-13 08:28:47,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50714 conditions, 3453 events. 1379/3453 cut-off events. For 477362/477362 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 32042 event pairs, 114 based on Foata normal form. 1/3454 useless extension candidates. Maximal degree in co-relation 50246. Up to 1929 conditions per place. [2021-06-13 08:28:47,841 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1100 selfloop transitions, 107 changer transitions 10/1225 dead transitions. [2021-06-13 08:28:47,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1037 places, 1225 transitions, 35885 flow [2021-06-13 08:28:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:28:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:28:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 302 transitions. [2021-06-13 08:28:47,842 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7626262626262627 [2021-06-13 08:28:47,842 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 302 transitions. [2021-06-13 08:28:47,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 302 transitions. [2021-06-13 08:28:47,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:28:47,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 302 transitions. [2021-06-13 08:28:47,843 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) [2021-06-13 08:28:47,843 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) [2021-06-13 08:28:47,843 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) [2021-06-13 08:28:47,843 INFO L185 Difference]: Start difference. First operand has 1029 places, 1184 transitions, 31835 flow. Second operand 9 states and 302 transitions. [2021-06-13 08:28:47,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1037 places, 1225 transitions, 35885 flow [2021-06-13 08:28:56,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1025 places, 1225 transitions, 35448 flow, removed 89 selfloop flow, removed 12 redundant places. [2021-06-13 08:28:56,466 INFO L241 Difference]: Finished difference. Result has 1031 places, 1185 transitions, 32208 flow [2021-06-13 08:28:56,466 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31408, PETRI_DIFFERENCE_MINUEND_PLACES=1017, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1080, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32208, PETRI_PLACES=1031, PETRI_TRANSITIONS=1185} [2021-06-13 08:28:56,466 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 992 predicate places. [2021-06-13 08:28:56,466 INFO L482 AbstractCegarLoop]: Abstraction has has 1031 places, 1185 transitions, 32208 flow [2021-06-13 08:28:56,467 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) [2021-06-13 08:28:56,467 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:28:56,467 INFO L255 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] [2021-06-13 08:28:56,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-13 08:28:56,467 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:28:56,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:28:56,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1977163624, now seen corresponding path program 150 times [2021-06-13 08:28:56,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:28:56,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162972124] [2021-06-13 08:28:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:28:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:28:56,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:56,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:56,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:56,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:56,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:56,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:56,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:56,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:56,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:56,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:56,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:56,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:56,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:56,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:28:56,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:28:56,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:28:56,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:28:56,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:28:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:28:56,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:28:56,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162972124] [2021-06-13 08:28:56,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162972124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:28:56,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:28:56,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:28:56,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480831611] [2021-06-13 08:28:56,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:28:56,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:28:56,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:28:56,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:28:56,529 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:28:56,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1031 places, 1185 transitions, 32208 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) [2021-06-13 08:28:56,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:28:56,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:28:56,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:28:58,825 INFO L129 PetriNetUnfolder]: 1365/3429 cut-off events. [2021-06-13 08:28:58,825 INFO L130 PetriNetUnfolder]: For 441007/441007 co-relation queries the response was YES. [2021-06-13 08:28:58,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49936 conditions, 3429 events. 1365/3429 cut-off events. For 441007/441007 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 31822 event pairs, 112 based on Foata normal form. 1/3430 useless extension candidates. Maximal degree in co-relation 49466. Up to 1842 conditions per place. [2021-06-13 08:28:58,932 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1068 selfloop transitions, 135 changer transitions 14/1225 dead transitions. [2021-06-13 08:28:58,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1040 places, 1225 transitions, 36614 flow [2021-06-13 08:28:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:28:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:28:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 333 transitions. [2021-06-13 08:28:58,933 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7568181818181818 [2021-06-13 08:28:58,933 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 333 transitions. [2021-06-13 08:28:58,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 333 transitions. [2021-06-13 08:28:58,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:28:58,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 333 transitions. [2021-06-13 08:28:58,933 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) [2021-06-13 08:28:58,934 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) [2021-06-13 08:28:58,934 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) [2021-06-13 08:28:58,934 INFO L185 Difference]: Start difference. First operand has 1031 places, 1185 transitions, 32208 flow. Second operand 10 states and 333 transitions. [2021-06-13 08:28:58,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1040 places, 1225 transitions, 36614 flow [2021-06-13 08:29:06,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1033 places, 1225 transitions, 36118 flow, removed 188 selfloop flow, removed 7 redundant places. [2021-06-13 08:29:06,922 INFO L241 Difference]: Finished difference. Result has 1040 places, 1179 transitions, 32038 flow [2021-06-13 08:29:06,923 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31716, PETRI_DIFFERENCE_MINUEND_PLACES=1024, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32038, PETRI_PLACES=1040, PETRI_TRANSITIONS=1179} [2021-06-13 08:29:06,923 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1001 predicate places. [2021-06-13 08:29:06,923 INFO L482 AbstractCegarLoop]: Abstraction has has 1040 places, 1179 transitions, 32038 flow [2021-06-13 08:29:06,923 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) [2021-06-13 08:29:06,923 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:29:06,923 INFO L255 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] [2021-06-13 08:29:06,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-13 08:29:06,923 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:29:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:29:06,923 INFO L82 PathProgramCache]: Analyzing trace with hash 970823294, now seen corresponding path program 151 times [2021-06-13 08:29:06,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:29:06,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676143898] [2021-06-13 08:29:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:29:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:29:06,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:06,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:06,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:06,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:06,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:06,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:06,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:06,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:06,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:06,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:06,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:06,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:29:06,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:06,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:06,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:06,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:06,977 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:29:06,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:29:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:29:06,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:29:06,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676143898] [2021-06-13 08:29:06,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676143898] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:29:06,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:29:06,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:29:06,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485202911] [2021-06-13 08:29:06,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:29:06,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:29:06,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:29:06,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:29:06,979 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:29:06,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1040 places, 1179 transitions, 32038 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) [2021-06-13 08:29:06,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:29:06,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:29:06,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:29:09,115 INFO L129 PetriNetUnfolder]: 1358/3428 cut-off events. [2021-06-13 08:29:09,116 INFO L130 PetriNetUnfolder]: For 420978/420978 co-relation queries the response was YES. [2021-06-13 08:29:09,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49727 conditions, 3428 events. 1358/3428 cut-off events. For 420978/420978 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 31804 event pairs, 47 based on Foata normal form. 1/3429 useless extension candidates. Maximal degree in co-relation 49251. Up to 2338 conditions per place. [2021-06-13 08:29:09,351 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1152 selfloop transitions, 45 changer transitions 4/1209 dead transitions. [2021-06-13 08:29:09,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1048 places, 1209 transitions, 35944 flow [2021-06-13 08:29:09,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:29:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:29:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-06-13 08:29:09,352 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-06-13 08:29:09,352 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-06-13 08:29:09,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-06-13 08:29:09,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:29:09,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-06-13 08:29:09,352 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) [2021-06-13 08:29:09,352 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) [2021-06-13 08:29:09,352 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) [2021-06-13 08:29:09,352 INFO L185 Difference]: Start difference. First operand has 1040 places, 1179 transitions, 32038 flow. Second operand 9 states and 296 transitions. [2021-06-13 08:29:09,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1048 places, 1209 transitions, 35944 flow [2021-06-13 08:29:17,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1029 places, 1209 transitions, 35410 flow, removed 20 selfloop flow, removed 19 redundant places. [2021-06-13 08:29:17,044 INFO L241 Difference]: Finished difference. Result has 1034 places, 1181 transitions, 32154 flow [2021-06-13 08:29:17,045 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31526, PETRI_DIFFERENCE_MINUEND_PLACES=1021, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32154, PETRI_PLACES=1034, PETRI_TRANSITIONS=1181} [2021-06-13 08:29:17,045 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 995 predicate places. [2021-06-13 08:29:17,045 INFO L482 AbstractCegarLoop]: Abstraction has has 1034 places, 1181 transitions, 32154 flow [2021-06-13 08:29:17,045 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) [2021-06-13 08:29:17,045 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:29:17,045 INFO L255 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] [2021-06-13 08:29:17,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-13 08:29:17,046 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:29:17,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:29:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash -11881844, now seen corresponding path program 152 times [2021-06-13 08:29:17,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:29:17,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093274233] [2021-06-13 08:29:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:29:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:29:17,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:17,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:17,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:17,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:17,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:17,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:17,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:17,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:17,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:17,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:17,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:17,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:29:17,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:17,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:17,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:17,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:17,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:29:17,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:29:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:29:17,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:29:17,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093274233] [2021-06-13 08:29:17,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093274233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:29:17,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:29:17,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:29:17,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295060327] [2021-06-13 08:29:17,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:29:17,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:29:17,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:29:17,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:29:17,092 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:29:17,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1034 places, 1181 transitions, 32154 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) [2021-06-13 08:29:17,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:29:17,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:29:17,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:29:19,282 INFO L129 PetriNetUnfolder]: 1357/3416 cut-off events. [2021-06-13 08:29:19,283 INFO L130 PetriNetUnfolder]: For 406323/406323 co-relation queries the response was YES. [2021-06-13 08:29:19,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49011 conditions, 3416 events. 1357/3416 cut-off events. For 406323/406323 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 31695 event pairs, 62 based on Foata normal form. 1/3417 useless extension candidates. Maximal degree in co-relation 48536. Up to 2295 conditions per place. [2021-06-13 08:29:19,397 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1158 selfloop transitions, 39 changer transitions 6/1211 dead transitions. [2021-06-13 08:29:19,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 1211 transitions, 35711 flow [2021-06-13 08:29:19,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:29:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:29:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2021-06-13 08:29:19,398 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7585227272727273 [2021-06-13 08:29:19,398 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 267 transitions. [2021-06-13 08:29:19,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 267 transitions. [2021-06-13 08:29:19,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:29:19,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 267 transitions. [2021-06-13 08:29:19,398 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) [2021-06-13 08:29:19,398 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) [2021-06-13 08:29:19,398 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) [2021-06-13 08:29:19,398 INFO L185 Difference]: Start difference. First operand has 1034 places, 1181 transitions, 32154 flow. Second operand 8 states and 267 transitions. [2021-06-13 08:29:19,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 1211 transitions, 35711 flow [2021-06-13 08:29:27,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1035 places, 1211 transitions, 35250 flow, removed 195 selfloop flow, removed 6 redundant places. [2021-06-13 08:29:27,450 INFO L241 Difference]: Finished difference. Result has 1039 places, 1181 transitions, 32027 flow [2021-06-13 08:29:27,451 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31693, PETRI_DIFFERENCE_MINUEND_PLACES=1028, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=32027, PETRI_PLACES=1039, PETRI_TRANSITIONS=1181} [2021-06-13 08:29:27,451 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1000 predicate places. [2021-06-13 08:29:27,451 INFO L482 AbstractCegarLoop]: Abstraction has has 1039 places, 1181 transitions, 32027 flow [2021-06-13 08:29:27,451 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) [2021-06-13 08:29:27,451 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:29:27,451 INFO L255 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] [2021-06-13 08:29:27,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-13 08:29:27,451 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:29:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:29:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash -284611252, now seen corresponding path program 153 times [2021-06-13 08:29:27,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:29:27,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017267696] [2021-06-13 08:29:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:29:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:29:27,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:27,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:27,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:27,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:27,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:27,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:27,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:27,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:27,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:27,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:27,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:27,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:29:27,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:27,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:27,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:27,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:27,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:29:27,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:29:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:29:27,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:29:27,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017267696] [2021-06-13 08:29:27,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017267696] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:29:27,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:29:27,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:29:27,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550301284] [2021-06-13 08:29:27,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:29:27,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:29:27,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:29:27,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:29:27,516 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:29:27,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1039 places, 1181 transitions, 32027 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) [2021-06-13 08:29:27,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:29:27,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:29:27,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:29:29,790 INFO L129 PetriNetUnfolder]: 1360/3429 cut-off events. [2021-06-13 08:29:29,791 INFO L130 PetriNetUnfolder]: For 441592/441592 co-relation queries the response was YES. [2021-06-13 08:29:29,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49927 conditions, 3429 events. 1360/3429 cut-off events. For 441592/441592 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 31843 event pairs, 74 based on Foata normal form. 1/3430 useless extension candidates. Maximal degree in co-relation 49451. Up to 2112 conditions per place. [2021-06-13 08:29:29,900 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1111 selfloop transitions, 91 changer transitions 11/1221 dead transitions. [2021-06-13 08:29:29,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1048 places, 1221 transitions, 37341 flow [2021-06-13 08:29:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:29:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:29:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-06-13 08:29:29,901 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-06-13 08:29:29,901 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-06-13 08:29:29,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-06-13 08:29:29,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:29:29,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-06-13 08:29:29,902 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) [2021-06-13 08:29:29,902 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) [2021-06-13 08:29:29,902 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) [2021-06-13 08:29:29,902 INFO L185 Difference]: Start difference. First operand has 1039 places, 1181 transitions, 32027 flow. Second operand 10 states and 329 transitions. [2021-06-13 08:29:29,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1048 places, 1221 transitions, 37341 flow [2021-06-13 08:29:38,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1043 places, 1221 transitions, 37093 flow, removed 99 selfloop flow, removed 5 redundant places. [2021-06-13 08:29:38,470 INFO L241 Difference]: Finished difference. Result has 1049 places, 1182 transitions, 33102 flow [2021-06-13 08:29:38,471 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31785, PETRI_DIFFERENCE_MINUEND_PLACES=1034, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1092, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=33102, PETRI_PLACES=1049, PETRI_TRANSITIONS=1182} [2021-06-13 08:29:38,471 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1010 predicate places. [2021-06-13 08:29:38,471 INFO L482 AbstractCegarLoop]: Abstraction has has 1049 places, 1182 transitions, 33102 flow [2021-06-13 08:29:38,471 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) [2021-06-13 08:29:38,471 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:29:38,471 INFO L255 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] [2021-06-13 08:29:38,471 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-13 08:29:38,471 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:29:38,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:29:38,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1550522268, now seen corresponding path program 154 times [2021-06-13 08:29:38,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:29:38,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911208116] [2021-06-13 08:29:38,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:29:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:29:38,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:38,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:38,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:38,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:38,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:38,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:38,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:38,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:38,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:38,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:38,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:38,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:29:38,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:38,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:38,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:38,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:38,549 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:29:38,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:29:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:29:38,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:29:38,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911208116] [2021-06-13 08:29:38,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911208116] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:29:38,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:29:38,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:29:38,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181208311] [2021-06-13 08:29:38,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:29:38,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:29:38,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:29:38,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:29:38,552 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:29:38,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1049 places, 1182 transitions, 33102 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) [2021-06-13 08:29:38,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:29:38,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:29:38,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:29:40,829 INFO L129 PetriNetUnfolder]: 1354/3398 cut-off events. [2021-06-13 08:29:40,829 INFO L130 PetriNetUnfolder]: For 451140/451140 co-relation queries the response was YES. [2021-06-13 08:29:40,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49878 conditions, 3398 events. 1354/3398 cut-off events. For 451140/451140 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 31424 event pairs, 98 based on Foata normal form. 1/3399 useless extension candidates. Maximal degree in co-relation 49398. Up to 2002 conditions per place. [2021-06-13 08:29:40,934 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1106 selfloop transitions, 92 changer transitions 9/1215 dead transitions. [2021-06-13 08:29:40,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1057 places, 1215 transitions, 36790 flow [2021-06-13 08:29:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:29:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:29:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 300 transitions. [2021-06-13 08:29:40,935 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2021-06-13 08:29:40,935 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 300 transitions. [2021-06-13 08:29:40,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 300 transitions. [2021-06-13 08:29:40,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:29:40,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 300 transitions. [2021-06-13 08:29:40,935 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) [2021-06-13 08:29:40,935 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) [2021-06-13 08:29:40,935 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) [2021-06-13 08:29:40,935 INFO L185 Difference]: Start difference. First operand has 1049 places, 1182 transitions, 33102 flow. Second operand 9 states and 300 transitions. [2021-06-13 08:29:40,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1057 places, 1215 transitions, 36790 flow [2021-06-13 08:29:49,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1048 places, 1215 transitions, 35615 flow, removed 511 selfloop flow, removed 9 redundant places. [2021-06-13 08:29:49,539 INFO L241 Difference]: Finished difference. Result has 1053 places, 1178 transitions, 32125 flow [2021-06-13 08:29:49,540 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31939, PETRI_DIFFERENCE_MINUEND_PLACES=1040, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32125, PETRI_PLACES=1053, PETRI_TRANSITIONS=1178} [2021-06-13 08:29:49,540 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1014 predicate places. [2021-06-13 08:29:49,540 INFO L482 AbstractCegarLoop]: Abstraction has has 1053 places, 1178 transitions, 32125 flow [2021-06-13 08:29:49,540 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) [2021-06-13 08:29:49,540 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:29:49,540 INFO L255 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] [2021-06-13 08:29:49,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-13 08:29:49,540 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:29:49,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:29:49,541 INFO L82 PathProgramCache]: Analyzing trace with hash 731069682, now seen corresponding path program 155 times [2021-06-13 08:29:49,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:29:49,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149030119] [2021-06-13 08:29:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:29:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:29:49,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:49,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:49,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:49,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:49,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:49,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:49,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:49,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:49,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:49,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:49,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:49,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:29:49,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:49,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:29:49,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:29:49,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:29:49,593 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:29:49,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:29:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:29:49,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:29:49,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149030119] [2021-06-13 08:29:49,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149030119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:29:49,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:29:49,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:29:49,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93693391] [2021-06-13 08:29:49,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:29:49,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:29:49,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:29:49,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:29:49,595 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:29:49,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1053 places, 1178 transitions, 32125 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) [2021-06-13 08:29:49,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:29:49,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:29:49,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:29:51,923 INFO L129 PetriNetUnfolder]: 1351/3398 cut-off events. [2021-06-13 08:29:51,923 INFO L130 PetriNetUnfolder]: For 430423/430423 co-relation queries the response was YES. [2021-06-13 08:29:52,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49567 conditions, 3398 events. 1351/3398 cut-off events. For 430423/430423 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 31457 event pairs, 57 based on Foata normal form. 1/3399 useless extension candidates. Maximal degree in co-relation 49084. Up to 2247 conditions per place. [2021-06-13 08:29:52,080 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1138 selfloop transitions, 58 changer transitions 5/1209 dead transitions. [2021-06-13 08:29:52,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1061 places, 1209 transitions, 35665 flow [2021-06-13 08:29:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:29:52,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:29:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2021-06-13 08:29:52,081 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:29:52,081 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 297 transitions. [2021-06-13 08:29:52,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 297 transitions. [2021-06-13 08:29:52,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:29:52,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 297 transitions. [2021-06-13 08:29:52,082 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) [2021-06-13 08:29:52,082 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) [2021-06-13 08:29:52,082 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) [2021-06-13 08:29:52,082 INFO L185 Difference]: Start difference. First operand has 1053 places, 1178 transitions, 32125 flow. Second operand 9 states and 297 transitions. [2021-06-13 08:29:52,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1061 places, 1209 transitions, 35665 flow [2021-06-13 08:30:00,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1048 places, 1209 transitions, 35313 flow, removed 22 selfloop flow, removed 13 redundant places. [2021-06-13 08:30:00,511 INFO L241 Difference]: Finished difference. Result has 1052 places, 1178 transitions, 32214 flow [2021-06-13 08:30:00,511 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31787, PETRI_DIFFERENCE_MINUEND_PLACES=1040, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32214, PETRI_PLACES=1052, PETRI_TRANSITIONS=1178} [2021-06-13 08:30:00,511 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1013 predicate places. [2021-06-13 08:30:00,511 INFO L482 AbstractCegarLoop]: Abstraction has has 1052 places, 1178 transitions, 32214 flow [2021-06-13 08:30:00,511 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) [2021-06-13 08:30:00,511 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:30:00,511 INFO L255 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] [2021-06-13 08:30:00,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-13 08:30:00,512 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:30:00,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:30:00,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1260998924, now seen corresponding path program 156 times [2021-06-13 08:30:00,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:30:00,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703329568] [2021-06-13 08:30:00,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:30:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:30:00,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:00,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:00,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:00,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:00,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:00,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:00,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:00,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:00,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:00,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:00,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:00,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:30:00,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:00,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:00,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:00,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:00,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:30:00,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:30:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:30:00,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:30:00,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703329568] [2021-06-13 08:30:00,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703329568] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:30:00,565 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:30:00,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:30:00,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223200138] [2021-06-13 08:30:00,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:30:00,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:30:00,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:30:00,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:30:00,566 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:30:00,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1052 places, 1178 transitions, 32214 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) [2021-06-13 08:30:00,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:30:00,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:30:00,566 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:30:02,915 INFO L129 PetriNetUnfolder]: 1350/3405 cut-off events. [2021-06-13 08:30:02,916 INFO L130 PetriNetUnfolder]: For 427479/427479 co-relation queries the response was YES. [2021-06-13 08:30:03,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49298 conditions, 3405 events. 1350/3405 cut-off events. For 427479/427479 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 31605 event pairs, 55 based on Foata normal form. 1/3406 useless extension candidates. Maximal degree in co-relation 48816. Up to 2237 conditions per place. [2021-06-13 08:30:03,026 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1106 selfloop transitions, 82 changer transitions 10/1206 dead transitions. [2021-06-13 08:30:03,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1060 places, 1206 transitions, 35624 flow [2021-06-13 08:30:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:30:03,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:30:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2021-06-13 08:30:03,027 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2021-06-13 08:30:03,027 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 296 transitions. [2021-06-13 08:30:03,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 296 transitions. [2021-06-13 08:30:03,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:30:03,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 296 transitions. [2021-06-13 08:30:03,027 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) [2021-06-13 08:30:03,028 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) [2021-06-13 08:30:03,028 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) [2021-06-13 08:30:03,028 INFO L185 Difference]: Start difference. First operand has 1052 places, 1178 transitions, 32214 flow. Second operand 9 states and 296 transitions. [2021-06-13 08:30:03,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1060 places, 1206 transitions, 35624 flow [2021-06-13 08:30:11,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1051 places, 1206 transitions, 35310 flow, removed 101 selfloop flow, removed 9 redundant places. [2021-06-13 08:30:11,692 INFO L241 Difference]: Finished difference. Result has 1055 places, 1174 transitions, 32085 flow [2021-06-13 08:30:11,692 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31902, PETRI_DIFFERENCE_MINUEND_PLACES=1043, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1096, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32085, PETRI_PLACES=1055, PETRI_TRANSITIONS=1174} [2021-06-13 08:30:11,692 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1016 predicate places. [2021-06-13 08:30:11,692 INFO L482 AbstractCegarLoop]: Abstraction has has 1055 places, 1174 transitions, 32085 flow [2021-06-13 08:30:11,692 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) [2021-06-13 08:30:11,692 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:30:11,692 INFO L255 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] [2021-06-13 08:30:11,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-13 08:30:11,693 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:30:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:30:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash 937996272, now seen corresponding path program 157 times [2021-06-13 08:30:11,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:30:11,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398928340] [2021-06-13 08:30:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:30:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:30:11,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:11,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:11,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:11,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:11,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:11,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:11,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:11,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:11,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:11,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:11,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:11,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:11,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:11,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:11,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:11,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:11,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:30:11,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:30:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:30:11,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:30:11,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398928340] [2021-06-13 08:30:11,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398928340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:30:11,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:30:11,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 08:30:11,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147987679] [2021-06-13 08:30:11,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 08:30:11,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:30:11,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 08:30:11,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-06-13 08:30:11,750 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:30:11,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1055 places, 1174 transitions, 32085 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) [2021-06-13 08:30:11,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:30:11,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:30:11,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:30:14,007 INFO L129 PetriNetUnfolder]: 1359/3431 cut-off events. [2021-06-13 08:30:14,007 INFO L130 PetriNetUnfolder]: For 505140/505140 co-relation queries the response was YES. [2021-06-13 08:30:14,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51012 conditions, 3431 events. 1359/3431 cut-off events. For 505140/505140 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 31945 event pairs, 56 based on Foata normal form. 1/3432 useless extension candidates. Maximal degree in co-relation 50529. Up to 2259 conditions per place. [2021-06-13 08:30:14,113 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1128 selfloop transitions, 72 changer transitions 1/1209 dead transitions. [2021-06-13 08:30:14,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1062 places, 1209 transitions, 36635 flow [2021-06-13 08:30:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 08:30:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 08:30:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 265 transitions. [2021-06-13 08:30:14,114 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7528409090909091 [2021-06-13 08:30:14,114 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 265 transitions. [2021-06-13 08:30:14,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 265 transitions. [2021-06-13 08:30:14,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:30:14,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 265 transitions. [2021-06-13 08:30:14,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 33.125) internal successors, (265), 8 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 08:30:14,114 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) [2021-06-13 08:30:14,114 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) [2021-06-13 08:30:14,114 INFO L185 Difference]: Start difference. First operand has 1055 places, 1174 transitions, 32085 flow. Second operand 8 states and 265 transitions. [2021-06-13 08:30:14,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1062 places, 1209 transitions, 36635 flow [2021-06-13 08:30:23,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1049 places, 1209 transitions, 35725 flow, removed 352 selfloop flow, removed 13 redundant places. [2021-06-13 08:30:23,093 INFO L241 Difference]: Finished difference. Result has 1052 places, 1186 transitions, 33271 flow [2021-06-13 08:30:23,093 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31193, PETRI_DIFFERENCE_MINUEND_PLACES=1042, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=33271, PETRI_PLACES=1052, PETRI_TRANSITIONS=1186} [2021-06-13 08:30:23,093 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1013 predicate places. [2021-06-13 08:30:23,093 INFO L482 AbstractCegarLoop]: Abstraction has has 1052 places, 1186 transitions, 33271 flow [2021-06-13 08:30:23,093 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) [2021-06-13 08:30:23,094 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:30:23,094 INFO L255 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] [2021-06-13 08:30:23,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-13 08:30:23,094 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:30:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:30:23,094 INFO L82 PathProgramCache]: Analyzing trace with hash -688410234, now seen corresponding path program 158 times [2021-06-13 08:30:23,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:30:23,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499863864] [2021-06-13 08:30:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:30:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:30:23,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:23,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:23,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:23,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:23,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:23,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:23,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:23,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:23,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:23,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:23,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:23,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:30:23,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:23,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:23,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:23,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:23,171 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:30:23,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:30:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:30:23,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:30:23,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499863864] [2021-06-13 08:30:23,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499863864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:30:23,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:30:23,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:30:23,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147533604] [2021-06-13 08:30:23,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:30:23,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:30:23,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:30:23,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:30:23,175 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:30:23,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1052 places, 1186 transitions, 33271 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) [2021-06-13 08:30:23,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:30:23,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:30:23,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:30:25,565 INFO L129 PetriNetUnfolder]: 1362/3442 cut-off events. [2021-06-13 08:30:25,565 INFO L130 PetriNetUnfolder]: For 547086/547086 co-relation queries the response was YES. [2021-06-13 08:30:25,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51804 conditions, 3442 events. 1362/3442 cut-off events. For 547086/547086 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 32051 event pairs, 75 based on Foata normal form. 1/3442 useless extension candidates. Maximal degree in co-relation 51322. Up to 2030 conditions per place. [2021-06-13 08:30:25,687 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1075 selfloop transitions, 124 changer transitions 19/1226 dead transitions. [2021-06-13 08:30:25,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1061 places, 1226 transitions, 38565 flow [2021-06-13 08:30:25,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:30:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:30:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 329 transitions. [2021-06-13 08:30:25,688 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7477272727272727 [2021-06-13 08:30:25,688 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 329 transitions. [2021-06-13 08:30:25,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 329 transitions. [2021-06-13 08:30:25,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:30:25,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 329 transitions. [2021-06-13 08:30:25,689 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) [2021-06-13 08:30:25,689 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) [2021-06-13 08:30:25,689 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) [2021-06-13 08:30:25,689 INFO L185 Difference]: Start difference. First operand has 1052 places, 1186 transitions, 33271 flow. Second operand 10 states and 329 transitions. [2021-06-13 08:30:25,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1061 places, 1226 transitions, 38565 flow [2021-06-13 08:30:34,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1059 places, 1226 transitions, 37116 flow, removed 720 selfloop flow, removed 2 redundant places. [2021-06-13 08:30:34,788 INFO L241 Difference]: Finished difference. Result has 1066 places, 1179 transitions, 32678 flow [2021-06-13 08:30:34,788 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31866, PETRI_DIFFERENCE_MINUEND_PLACES=1050, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1063, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32678, PETRI_PLACES=1066, PETRI_TRANSITIONS=1179} [2021-06-13 08:30:34,788 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1027 predicate places. [2021-06-13 08:30:34,788 INFO L482 AbstractCegarLoop]: Abstraction has has 1066 places, 1179 transitions, 32678 flow [2021-06-13 08:30:34,789 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) [2021-06-13 08:30:34,789 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:30:34,789 INFO L255 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] [2021-06-13 08:30:34,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-13 08:30:34,789 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:30:34,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:30:34,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1848575226, now seen corresponding path program 159 times [2021-06-13 08:30:34,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:30:34,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293968649] [2021-06-13 08:30:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:30:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:30:34,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:34,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:34,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:34,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:34,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:34,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:34,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:34,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:34,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:34,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:34,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:34,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:30:34,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:34,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:34,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:34,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:34,849 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:30:34,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:30:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:30:34,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:30:34,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293968649] [2021-06-13 08:30:34,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293968649] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:30:34,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:30:34,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:30:34,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78644756] [2021-06-13 08:30:34,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:30:34,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:30:34,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:30:34,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:30:34,852 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:30:34,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1066 places, 1179 transitions, 32678 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) [2021-06-13 08:30:34,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:30:34,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:30:34,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:30:37,205 INFO L129 PetriNetUnfolder]: 1348/3391 cut-off events. [2021-06-13 08:30:37,205 INFO L130 PetriNetUnfolder]: For 452816/452816 co-relation queries the response was YES. [2021-06-13 08:30:37,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50188 conditions, 3391 events. 1348/3391 cut-off events. For 452816/452816 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 31362 event pairs, 101 based on Foata normal form. 1/3392 useless extension candidates. Maximal degree in co-relation 49700. Up to 1955 conditions per place. [2021-06-13 08:30:37,315 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1084 selfloop transitions, 111 changer transitions 11/1214 dead transitions. [2021-06-13 08:30:37,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1075 places, 1214 transitions, 36378 flow [2021-06-13 08:30:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:30:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:30:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 331 transitions. [2021-06-13 08:30:37,315 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7522727272727273 [2021-06-13 08:30:37,315 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 331 transitions. [2021-06-13 08:30:37,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 331 transitions. [2021-06-13 08:30:37,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:30:37,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 331 transitions. [2021-06-13 08:30:37,316 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) [2021-06-13 08:30:37,316 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) [2021-06-13 08:30:37,316 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) [2021-06-13 08:30:37,316 INFO L185 Difference]: Start difference. First operand has 1066 places, 1179 transitions, 32678 flow. Second operand 10 states and 331 transitions. [2021-06-13 08:30:37,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1075 places, 1214 transitions, 36378 flow [2021-06-13 08:30:45,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1063 places, 1214 transitions, 35536 flow, removed 289 selfloop flow, removed 12 redundant places. [2021-06-13 08:30:45,673 INFO L241 Difference]: Finished difference. Result has 1068 places, 1173 transitions, 32029 flow [2021-06-13 08:30:45,674 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31852, PETRI_DIFFERENCE_MINUEND_PLACES=1054, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32029, PETRI_PLACES=1068, PETRI_TRANSITIONS=1173} [2021-06-13 08:30:45,674 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1029 predicate places. [2021-06-13 08:30:45,674 INFO L482 AbstractCegarLoop]: Abstraction has has 1068 places, 1173 transitions, 32029 flow [2021-06-13 08:30:45,674 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) [2021-06-13 08:30:45,674 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:30:45,674 INFO L255 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] [2021-06-13 08:30:45,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-13 08:30:45,674 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:30:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:30:45,674 INFO L82 PathProgramCache]: Analyzing trace with hash 605731458, now seen corresponding path program 160 times [2021-06-13 08:30:45,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:30:45,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922033734] [2021-06-13 08:30:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:30:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:30:45,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:45,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:45,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:45,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:45,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:45,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:45,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:45,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:45,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:45,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:45,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:45,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:45,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:45,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:45,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:45,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:45,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:30:45,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:30:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:30:45,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:30:45,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922033734] [2021-06-13 08:30:45,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922033734] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:30:45,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:30:45,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:30:45,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769179705] [2021-06-13 08:30:45,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:30:45,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:30:45,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:30:45,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:30:45,736 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:30:45,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1068 places, 1173 transitions, 32029 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) [2021-06-13 08:30:45,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:30:45,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:30:45,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:30:47,923 INFO L129 PetriNetUnfolder]: 1344/3399 cut-off events. [2021-06-13 08:30:47,923 INFO L130 PetriNetUnfolder]: For 450092/450092 co-relation queries the response was YES. [2021-06-13 08:30:48,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50194 conditions, 3399 events. 1344/3399 cut-off events. For 450092/450092 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 31539 event pairs, 69 based on Foata normal form. 1/3400 useless extension candidates. Maximal degree in co-relation 49704. Up to 2093 conditions per place. [2021-06-13 08:30:48,133 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1099 selfloop transitions, 91 changer transitions 8/1206 dead transitions. [2021-06-13 08:30:48,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1076 places, 1206 transitions, 36165 flow [2021-06-13 08:30:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:30:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:30:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2021-06-13 08:30:48,134 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7525252525252525 [2021-06-13 08:30:48,134 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 298 transitions. [2021-06-13 08:30:48,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 298 transitions. [2021-06-13 08:30:48,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:30:48,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 298 transitions. [2021-06-13 08:30:48,134 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) [2021-06-13 08:30:48,134 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) [2021-06-13 08:30:48,134 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) [2021-06-13 08:30:48,135 INFO L185 Difference]: Start difference. First operand has 1068 places, 1173 transitions, 32029 flow. Second operand 9 states and 298 transitions. [2021-06-13 08:30:48,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1076 places, 1206 transitions, 36165 flow [2021-06-13 08:30:56,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1057 places, 1206 transitions, 35733 flow, removed 18 selfloop flow, removed 19 redundant places. [2021-06-13 08:30:56,098 INFO L241 Difference]: Finished difference. Result has 1063 places, 1172 transitions, 32117 flow [2021-06-13 08:30:56,098 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31619, PETRI_DIFFERENCE_MINUEND_PLACES=1049, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1082, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32117, PETRI_PLACES=1063, PETRI_TRANSITIONS=1172} [2021-06-13 08:30:56,098 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1024 predicate places. [2021-06-13 08:30:56,098 INFO L482 AbstractCegarLoop]: Abstraction has has 1063 places, 1172 transitions, 32117 flow [2021-06-13 08:30:56,098 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) [2021-06-13 08:30:56,098 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:30:56,098 INFO L255 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] [2021-06-13 08:30:56,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-13 08:30:56,099 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:30:56,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:30:56,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2279530, now seen corresponding path program 161 times [2021-06-13 08:30:56,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:30:56,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930742314] [2021-06-13 08:30:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:30:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:30:56,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:56,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:56,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:56,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:56,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:56,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:56,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:56,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:56,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:56,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:56,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:56,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:30:56,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:56,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:30:56,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:30:56,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:30:56,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:30:56,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:30:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:30:56,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:30:56,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930742314] [2021-06-13 08:30:56,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930742314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:30:56,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:30:56,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:30:56,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935432141] [2021-06-13 08:30:56,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:30:56,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:30:56,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:30:56,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:30:56,162 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:30:56,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 1172 transitions, 32117 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) [2021-06-13 08:30:56,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:30:56,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:30:56,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:30:58,502 INFO L129 PetriNetUnfolder]: 1342/3398 cut-off events. [2021-06-13 08:30:58,502 INFO L130 PetriNetUnfolder]: For 460581/460581 co-relation queries the response was YES. [2021-06-13 08:30:58,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50047 conditions, 3398 events. 1342/3398 cut-off events. For 460581/460581 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 31554 event pairs, 68 based on Foata normal form. 1/3399 useless extension candidates. Maximal degree in co-relation 49557. Up to 2044 conditions per place. [2021-06-13 08:30:58,661 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1067 selfloop transitions, 123 changer transitions 8/1206 dead transitions. [2021-06-13 08:30:58,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1072 places, 1206 transitions, 36259 flow [2021-06-13 08:30:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:30:58,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:30:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2021-06-13 08:30:58,662 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7454545454545455 [2021-06-13 08:30:58,662 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 328 transitions. [2021-06-13 08:30:58,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 328 transitions. [2021-06-13 08:30:58,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:30:58,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 328 transitions. [2021-06-13 08:30:58,662 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) [2021-06-13 08:30:58,663 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) [2021-06-13 08:30:58,663 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) [2021-06-13 08:30:58,663 INFO L185 Difference]: Start difference. First operand has 1063 places, 1172 transitions, 32117 flow. Second operand 10 states and 328 transitions. [2021-06-13 08:30:58,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1072 places, 1206 transitions, 36259 flow [2021-06-13 08:31:06,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1058 places, 1206 transitions, 35748 flow, removed 113 selfloop flow, removed 14 redundant places. [2021-06-13 08:31:06,560 INFO L241 Difference]: Finished difference. Result has 1064 places, 1171 transitions, 32209 flow [2021-06-13 08:31:06,561 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31622, PETRI_DIFFERENCE_MINUEND_PLACES=1049, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1049, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=32209, PETRI_PLACES=1064, PETRI_TRANSITIONS=1171} [2021-06-13 08:31:06,561 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1025 predicate places. [2021-06-13 08:31:06,561 INFO L482 AbstractCegarLoop]: Abstraction has has 1064 places, 1171 transitions, 32209 flow [2021-06-13 08:31:06,561 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) [2021-06-13 08:31:06,561 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:31:06,561 INFO L255 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] [2021-06-13 08:31:06,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-13 08:31:06,561 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:31:06,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:31:06,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1539795846, now seen corresponding path program 162 times [2021-06-13 08:31:06,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:31:06,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436796400] [2021-06-13 08:31:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:31:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:31:06,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:06,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:06,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:06,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:06,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:06,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:06,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:06,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:06,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:06,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:06,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:06,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:06,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:06,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:06,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:06,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:06,616 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:31:06,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:31:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:31:06,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:31:06,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436796400] [2021-06-13 08:31:06,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436796400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:31:06,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:31:06,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:31:06,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087969001] [2021-06-13 08:31:06,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:31:06,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:31:06,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:31:06,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:31:06,619 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:31:06,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1064 places, 1171 transitions, 32209 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) [2021-06-13 08:31:06,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:31:06,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:31:06,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:31:08,826 INFO L129 PetriNetUnfolder]: 1340/3372 cut-off events. [2021-06-13 08:31:08,826 INFO L130 PetriNetUnfolder]: For 469708/469708 co-relation queries the response was YES. [2021-06-13 08:31:08,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50058 conditions, 3372 events. 1340/3372 cut-off events. For 469708/469708 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 31158 event pairs, 100 based on Foata normal form. 1/3373 useless extension candidates. Maximal degree in co-relation 49566. Up to 1957 conditions per place. [2021-06-13 08:31:08,949 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1093 selfloop transitions, 95 changer transitions 12/1208 dead transitions. [2021-06-13 08:31:08,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1072 places, 1208 transitions, 36360 flow [2021-06-13 08:31:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:31:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:31:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 301 transitions. [2021-06-13 08:31:08,950 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.76010101010101 [2021-06-13 08:31:08,950 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 301 transitions. [2021-06-13 08:31:08,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 301 transitions. [2021-06-13 08:31:08,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:31:08,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 301 transitions. [2021-06-13 08:31:08,950 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) [2021-06-13 08:31:08,950 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) [2021-06-13 08:31:08,950 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) [2021-06-13 08:31:08,950 INFO L185 Difference]: Start difference. First operand has 1064 places, 1171 transitions, 32209 flow. Second operand 9 states and 301 transitions. [2021-06-13 08:31:08,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1072 places, 1208 transitions, 36360 flow [2021-06-13 08:31:17,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1057 places, 1208 transitions, 35722 flow, removed 126 selfloop flow, removed 15 redundant places. [2021-06-13 08:31:17,075 INFO L241 Difference]: Finished difference. Result has 1064 places, 1167 transitions, 32044 flow [2021-06-13 08:31:17,076 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31601, PETRI_DIFFERENCE_MINUEND_PLACES=1049, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1076, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=32044, PETRI_PLACES=1064, PETRI_TRANSITIONS=1167} [2021-06-13 08:31:17,076 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1025 predicate places. [2021-06-13 08:31:17,076 INFO L482 AbstractCegarLoop]: Abstraction has has 1064 places, 1167 transitions, 32044 flow [2021-06-13 08:31:17,076 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) [2021-06-13 08:31:17,076 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:31:17,076 INFO L255 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] [2021-06-13 08:31:17,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-13 08:31:17,076 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:31:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:31:17,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1197163014, now seen corresponding path program 163 times [2021-06-13 08:31:17,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:31:17,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354071036] [2021-06-13 08:31:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:31:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:31:17,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:17,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:17,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:17,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:17,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:17,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:17,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:17,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:17,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:17,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:17,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:17,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:17,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:17,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:17,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:17,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:17,173 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:31:17,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:31:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:31:17,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:31:17,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354071036] [2021-06-13 08:31:17,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354071036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:31:17,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:31:17,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:31:17,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877424786] [2021-06-13 08:31:17,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:31:17,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:31:17,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:31:17,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:31:17,176 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:31:17,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1064 places, 1167 transitions, 32044 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) [2021-06-13 08:31:17,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:31:17,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:31:17,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:31:19,481 INFO L129 PetriNetUnfolder]: 1333/3368 cut-off events. [2021-06-13 08:31:19,481 INFO L130 PetriNetUnfolder]: For 455939/455939 co-relation queries the response was YES. [2021-06-13 08:31:19,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49662 conditions, 3368 events. 1333/3368 cut-off events. For 455939/455939 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 31141 event pairs, 91 based on Foata normal form. 1/3369 useless extension candidates. Maximal degree in co-relation 49170. Up to 1905 conditions per place. [2021-06-13 08:31:19,657 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1065 selfloop transitions, 120 changer transitions 10/1203 dead transitions. [2021-06-13 08:31:19,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1073 places, 1203 transitions, 35722 flow [2021-06-13 08:31:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:31:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:31:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 332 transitions. [2021-06-13 08:31:19,658 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7545454545454545 [2021-06-13 08:31:19,658 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 332 transitions. [2021-06-13 08:31:19,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 332 transitions. [2021-06-13 08:31:19,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:31:19,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 332 transitions. [2021-06-13 08:31:19,659 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) [2021-06-13 08:31:19,659 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) [2021-06-13 08:31:19,659 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) [2021-06-13 08:31:19,659 INFO L185 Difference]: Start difference. First operand has 1064 places, 1167 transitions, 32044 flow. Second operand 10 states and 332 transitions. [2021-06-13 08:31:19,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1073 places, 1203 transitions, 35722 flow [2021-06-13 08:31:27,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1062 places, 1203 transitions, 35290 flow, removed 91 selfloop flow, removed 11 redundant places. [2021-06-13 08:31:27,510 INFO L241 Difference]: Finished difference. Result has 1067 places, 1162 transitions, 31839 flow [2021-06-13 08:31:27,510 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31614, PETRI_DIFFERENCE_MINUEND_PLACES=1053, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31839, PETRI_PLACES=1067, PETRI_TRANSITIONS=1162} [2021-06-13 08:31:27,511 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1028 predicate places. [2021-06-13 08:31:27,511 INFO L482 AbstractCegarLoop]: Abstraction has has 1067 places, 1162 transitions, 31839 flow [2021-06-13 08:31:27,511 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) [2021-06-13 08:31:27,511 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:31:27,511 INFO L255 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] [2021-06-13 08:31:27,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-13 08:31:27,511 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:31:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:31:27,511 INFO L82 PathProgramCache]: Analyzing trace with hash 2001003202, now seen corresponding path program 164 times [2021-06-13 08:31:27,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:31:27,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025679883] [2021-06-13 08:31:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:31:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:31:27,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:27,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:27,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:27,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:27,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:27,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:27,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:27,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:27,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:27,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:27,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:27,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:27,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:27,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:27,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:27,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:27,574 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:31:27,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:31:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:31:27,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:31:27,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025679883] [2021-06-13 08:31:27,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025679883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:31:27,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:31:27,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 08:31:27,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529513690] [2021-06-13 08:31:27,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 08:31:27,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:31:27,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 08:31:27,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-06-13 08:31:27,577 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:31:27,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1067 places, 1162 transitions, 31839 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) [2021-06-13 08:31:27,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:31:27,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:31:27,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:31:29,770 INFO L129 PetriNetUnfolder]: 1339/3391 cut-off events. [2021-06-13 08:31:29,770 INFO L130 PetriNetUnfolder]: For 509368/509368 co-relation queries the response was YES. [2021-06-13 08:31:29,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50848 conditions, 3391 events. 1339/3391 cut-off events. For 509368/509368 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 31467 event pairs, 81 based on Foata normal form. 1/3392 useless extension candidates. Maximal degree in co-relation 50356. Up to 2072 conditions per place. [2021-06-13 08:31:29,965 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1083 selfloop transitions, 107 changer transitions 3/1201 dead transitions. [2021-06-13 08:31:29,965 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1075 places, 1201 transitions, 36189 flow [2021-06-13 08:31:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 08:31:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 08:31:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 299 transitions. [2021-06-13 08:31:29,966 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7550505050505051 [2021-06-13 08:31:29,966 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 299 transitions. [2021-06-13 08:31:29,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 299 transitions. [2021-06-13 08:31:29,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:31:29,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 299 transitions. [2021-06-13 08:31:29,966 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) [2021-06-13 08:31:29,967 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) [2021-06-13 08:31:29,967 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) [2021-06-13 08:31:29,967 INFO L185 Difference]: Start difference. First operand has 1067 places, 1162 transitions, 31839 flow. Second operand 9 states and 299 transitions. [2021-06-13 08:31:29,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1075 places, 1201 transitions, 36189 flow [2021-06-13 08:31:38,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1053 places, 1201 transitions, 35644 flow, removed 26 selfloop flow, removed 22 redundant places. [2021-06-13 08:31:38,404 INFO L241 Difference]: Finished difference. Result has 1056 places, 1171 transitions, 33231 flow [2021-06-13 08:31:38,405 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=31322, PETRI_DIFFERENCE_MINUEND_PLACES=1045, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1062, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=33231, PETRI_PLACES=1056, PETRI_TRANSITIONS=1171} [2021-06-13 08:31:38,405 INFO L335 CegarLoopForPetriNet]: 39 programPoint places, 1017 predicate places. [2021-06-13 08:31:38,405 INFO L482 AbstractCegarLoop]: Abstraction has has 1056 places, 1171 transitions, 33231 flow [2021-06-13 08:31:38,405 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) [2021-06-13 08:31:38,405 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 08:31:38,405 INFO L255 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] [2021-06-13 08:31:38,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-13 08:31:38,406 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 08:31:38,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 08:31:38,406 INFO L82 PathProgramCache]: Analyzing trace with hash 221615122, now seen corresponding path program 165 times [2021-06-13 08:31:38,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 08:31:38,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886693845] [2021-06-13 08:31:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 08:31:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 08:31:38,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:38,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:38,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:38,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:38,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:38,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:38,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:38,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:38,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:38,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:38,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:38,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 08:31:38,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:38,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-06-13 08:31:38,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 08:31:38,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 08:31:38,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-06-13 08:31:38,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 08:31:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 08:31:38,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 08:31:38,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886693845] [2021-06-13 08:31:38,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886693845] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 08:31:38,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 08:31:38,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 08:31:38,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714332744] [2021-06-13 08:31:38,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 08:31:38,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 08:31:38,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 08:31:38,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-06-13 08:31:38,482 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 44 [2021-06-13 08:31:38,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1056 places, 1171 transitions, 33231 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) [2021-06-13 08:31:38,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 08:31:38,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 44 [2021-06-13 08:31:38,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 08:31:40,898 INFO L129 PetriNetUnfolder]: 1337/3376 cut-off events. [2021-06-13 08:31:40,898 INFO L130 PetriNetUnfolder]: For 508398/508398 co-relation queries the response was YES. [2021-06-13 08:31:40,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50456 conditions, 3376 events. 1337/3376 cut-off events. For 508398/508398 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 31273 event pairs, 79 based on Foata normal form. 1/3377 useless extension candidates. Maximal degree in co-relation 49971. Up to 2091 conditions per place. [2021-06-13 08:31:41,009 INFO L132 encePairwiseOnDemand]: 34/44 looper letters, 1112 selfloop transitions, 76 changer transitions 9/1205 dead transitions. [2021-06-13 08:31:41,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1065 places, 1205 transitions, 36921 flow [2021-06-13 08:31:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 08:31:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 08:31:41,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2021-06-13 08:31:41,010 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-06-13 08:31:41,010 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2021-06-13 08:31:41,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2021-06-13 08:31:41,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 08:31:41,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2021-06-13 08:31:41,010 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) [2021-06-13 08:31:41,011 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) [2021-06-13 08:31:41,011 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) [2021-06-13 08:31:41,011 INFO L185 Difference]: Start difference. First operand has 1056 places, 1171 transitions, 33231 flow. Second operand 10 states and 330 transitions. [2021-06-13 08:31:41,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1065 places, 1205 transitions, 36921 flow Received shutdown request... [2021-06-13 08:31:46,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-13 08:31:46,268 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-13 08:31:46,270 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 08:31:46,271 WARN L196 ceAbstractionStarter]: Timeout [2021-06-13 08:31:46,272 INFO L202 PluginConnector]: Adding new model sum_invariant.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 08:31:46 BasicIcfg [2021-06-13 08:31:46,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 08:31:46,272 INFO L168 Benchmark]: Toolchain (without parser) took 821040.13 ms. Allocated memory was 178.3 MB in the beginning and 3.9 GB in the end (delta: 3.7 GB). Free memory was 158.3 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.6 GB. Max. memory is 8.0 GB. [2021-06-13 08:31:46,272 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 178.3 MB. Free memory is still 159.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 08:31:46,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.33 ms. Allocated memory is still 178.3 MB. Free memory was 158.2 MB in the beginning and 156.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:31:46,272 INFO L168 Benchmark]: Boogie Preprocessor took 14.06 ms. Allocated memory is still 178.3 MB. Free memory was 156.8 MB in the beginning and 155.9 MB in the end (delta: 881.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 08:31:46,272 INFO L168 Benchmark]: RCFGBuilder took 184.10 ms. Allocated memory is still 178.3 MB. Free memory was 155.8 MB in the beginning and 147.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-06-13 08:31:46,272 INFO L168 Benchmark]: TraceAbstraction took 820812.67 ms. Allocated memory was 178.3 MB in the beginning and 3.9 GB in the end (delta: 3.7 GB). Free memory was 146.6 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.6 GB. Max. memory is 8.0 GB. [2021-06-13 08:31:46,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 178.3 MB. Free memory is still 159.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.33 ms. Allocated memory is still 178.3 MB. Free memory was 158.2 MB in the beginning and 156.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.06 ms. Allocated memory is still 178.3 MB. Free memory was 156.8 MB in the beginning and 155.9 MB in the end (delta: 881.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 184.10 ms. Allocated memory is still 178.3 MB. Free memory was 155.8 MB in the beginning and 147.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 820812.67 ms. Allocated memory was 178.3 MB in the beginning and 3.9 GB in the end (delta: 3.7 GB). Free memory was 146.6 MB in the beginning and 2.4 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.6 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 executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 6 procedures, 42 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 23.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 820684.3ms, OverallIterations: 168, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 807759.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 55.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5287 SDtfs, 3351 SDslu, 17144 SDs, 0 SdLazy, 52377 SolverSat, 1294 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20707.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1494 GetRequests, 148 SyntacticMatches, 165 SemanticMatches, 1181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8651.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44939occurred in iteration=145, InterpolantAutomatonStates: 1507, 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: 76.2ms SsaConstructionTime, 256.6ms SatisfiabilityAnalysisTime, 11852.2ms InterpolantComputationTime, 4368 NumberOfCodeBlocks, 4368 NumberOfCodeBlocksAsserted, 168 NumberOfCheckSat, 4200 ConstructedInterpolants, 0 QuantifiedInterpolants, 32074 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 168 InterpolantComputations, 168 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