/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 02:39:04,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 02:39:04,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 02:39:04,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 02:39:04,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 02:39:04,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 02:39:04,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 02:39:04,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 02:39:04,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 02:39:04,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 02:39:04,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 02:39:04,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 02:39:04,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 02:39:04,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 02:39:04,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 02:39:04,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 02:39:04,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 02:39:04,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf [2021-08-13 02:39:04,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 02:39:04,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 02:39:04,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 02:39:04,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 02:39:04,712 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 02:39:04,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 02:39:04,712 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 02:39:04,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 02:39:04,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 02:39:04,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 02:39:04,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 02:39:04,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 02:39:04,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 02:39:04,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 02:39:04,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 02:39:04,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 02:39:04,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 02:39:04,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 02:39:04,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 02:39:04,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 02:39:04,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 02:39:04,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 02:39:04,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 02:39:04,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 02:39:04,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 02:39:04,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 02:39:04,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 02:39:04,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 02:39:04,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 02:39:04,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 02:39:04,716 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 02:39:04,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 02:39:05,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 02:39:05,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 02:39:05,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 02:39:05,064 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 02:39:05,065 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 02:39:05,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2021-08-13 02:39:05,066 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2021-08-13 02:39:05,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 02:39:05,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 02:39:05,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 02:39:05,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 02:39:05,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 02:39:05,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/1) ... [2021-08-13 02:39:05,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/1) ... [2021-08-13 02:39:05,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 02:39:05,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 02:39:05,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 02:39:05,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 02:39:05,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/1) ... [2021-08-13 02:39:05,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/1) ... [2021-08-13 02:39:05,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/1) ... [2021-08-13 02:39:05,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/1) ... [2021-08-13 02:39:05,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/1) ... [2021-08-13 02:39:05,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/1) ... [2021-08-13 02:39:05,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/1) ... [2021-08-13 02:39:05,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 02:39:05,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 02:39:05,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 02:39:05,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 02:39:05,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (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 [2021-08-13 02:39:05,268 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-08-13 02:39:05,269 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-08-13 02:39:05,269 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-08-13 02:39:05,269 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-08-13 02:39:05,269 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-08-13 02:39:05,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-08-13 02:39:05,270 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 02:39:05,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 02:39:05,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 02:39:05,270 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-08-13 02:39:05,270 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-08-13 02:39:05,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-08-13 02:39:05,271 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 02:39:05,508 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 02:39:05,509 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-13 02:39:05,510 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:39:05 BoogieIcfgContainer [2021-08-13 02:39:05,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 02:39:05,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 02:39:05,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 02:39:05,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 02:39:05,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:39:05" (1/2) ... [2021-08-13 02:39:05,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8aada7 and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 02:39:05, skipping insertion in model container [2021-08-13 02:39:05,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:39:05" (2/2) ... [2021-08-13 02:39:05,537 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2021-08-13 02:39:05,541 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 02:39:05,542 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-13 02:39:05,542 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 02:39:05,563 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,564 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,564 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,565 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,565 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,565 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,565 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,565 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,566 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,567 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,567 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,567 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,568 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,568 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,568 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,568 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,573 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,575 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 02:39:05,576 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 02:39:05,612 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-13 02:39:05,647 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 02:39:05,647 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 02:39:05,647 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 02:39:05,647 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 02:39:05,647 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 02:39:05,647 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 02:39:05,648 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 02:39:05,648 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 02:39:05,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-08-13 02:39:05,720 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-08-13 02:39:05,720 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 02:39:05,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 111 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-08-13 02:39:05,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-08-13 02:39:05,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-08-13 02:39:05,745 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-08-13 02:39:05,745 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 02:39:05,745 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:39:05,746 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:39:05,746 INFO L430 AbstractCegarLoop]: === Iteration 1 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:39:05,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:39:05,755 INFO L82 PathProgramCache]: Analyzing trace with hash -559778971, now seen corresponding path program 1 times [2021-08-13 02:39:05,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:39:05,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328262975] [2021-08-13 02:39:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:39:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:39:05,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:05,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:39:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:39:05,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:39:05,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328262975] [2021-08-13 02:39:05,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328262975] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:39:05,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:39:05,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-13 02:39:05,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673924229] [2021-08-13 02:39:05,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:39:05,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:39:05,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:39:05,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:39:05,915 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 46 [2021-08-13 02:39:05,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:05,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:39:05,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 46 [2021-08-13 02:39:05,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:39:06,015 INFO L129 PetriNetUnfolder]: 31/134 cut-off events. [2021-08-13 02:39:06,016 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 02:39:06,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 134 events. 31/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 488 event pairs, 4 based on Foata normal form. 41/164 useless extension candidates. Maximal degree in co-relation 177. Up to 30 conditions per place. [2021-08-13 02:39:06,019 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 8 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2021-08-13 02:39:06,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 125 flow [2021-08-13 02:39:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:39:06,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:39:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-08-13 02:39:06,033 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9057971014492754 [2021-08-13 02:39:06,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-08-13 02:39:06,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-08-13 02:39:06,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:39:06,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-08-13 02:39:06,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,043 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2021-08-13 02:39:06,043 INFO L482 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 125 flow [2021-08-13 02:39:06,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,044 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:39:06,044 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:39:06,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 02:39:06,044 INFO L430 AbstractCegarLoop]: === Iteration 2 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:39:06,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:39:06,045 INFO L82 PathProgramCache]: Analyzing trace with hash 403321209, now seen corresponding path program 1 times [2021-08-13 02:39:06,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:39:06,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991270506] [2021-08-13 02:39:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:39:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:39:06,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:39:06,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:39:06,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:39:06,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991270506] [2021-08-13 02:39:06,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991270506] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:39:06,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:39:06,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:39:06,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365139606] [2021-08-13 02:39:06,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:39:06,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:39:06,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:39:06,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:39:06,071 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-08-13 02:39:06,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:39:06,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-08-13 02:39:06,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:39:06,148 INFO L129 PetriNetUnfolder]: 98/292 cut-off events. [2021-08-13 02:39:06,148 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 02:39:06,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 292 events. 98/292 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1399 event pairs, 13 based on Foata normal form. 4/267 useless extension candidates. Maximal degree in co-relation 518. Up to 115 conditions per place. [2021-08-13 02:39:06,153 INFO L132 encePairwiseOnDemand]: 36/46 looper letters, 13 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2021-08-13 02:39:06,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 185 flow [2021-08-13 02:39:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:39:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:39:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2021-08-13 02:39:06,158 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8405797101449275 [2021-08-13 02:39:06,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 116 transitions. [2021-08-13 02:39:06,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 116 transitions. [2021-08-13 02:39:06,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:39:06,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 116 transitions. [2021-08-13 02:39:06,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,161 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2021-08-13 02:39:06,162 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 52 transitions, 185 flow [2021-08-13 02:39:06,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,162 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:39:06,162 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:39:06,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 02:39:06,162 INFO L430 AbstractCegarLoop]: === Iteration 3 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:39:06,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:39:06,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1014496749, now seen corresponding path program 2 times [2021-08-13 02:39:06,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:39:06,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467477008] [2021-08-13 02:39:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:39:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:39:06,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:39:06,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:39:06,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:39:06,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467477008] [2021-08-13 02:39:06,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467477008] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:39:06,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:39:06,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:39:06,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005310882] [2021-08-13 02:39:06,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:39:06,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:39:06,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:39:06,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:39:06,202 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-08-13 02:39:06,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 52 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:39:06,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-08-13 02:39:06,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:39:06,266 INFO L129 PetriNetUnfolder]: 86/285 cut-off events. [2021-08-13 02:39:06,267 INFO L130 PetriNetUnfolder]: For 62/87 co-relation queries the response was YES. [2021-08-13 02:39:06,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 285 events. 86/285 cut-off events. For 62/87 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1201 event pairs, 12 based on Foata normal form. 11/272 useless extension candidates. Maximal degree in co-relation 630. Up to 110 conditions per place. [2021-08-13 02:39:06,271 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 16 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2021-08-13 02:39:06,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 227 flow [2021-08-13 02:39:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:39:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:39:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2021-08-13 02:39:06,273 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8115942028985508 [2021-08-13 02:39:06,273 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2021-08-13 02:39:06,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2021-08-13 02:39:06,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:39:06,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2021-08-13 02:39:06,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,276 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2021-08-13 02:39:06,276 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 227 flow [2021-08-13 02:39:06,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,276 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:39:06,276 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:39:06,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 02:39:06,277 INFO L430 AbstractCegarLoop]: === Iteration 4 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:39:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:39:06,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1045005800, now seen corresponding path program 1 times [2021-08-13 02:39:06,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:39:06,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433104102] [2021-08-13 02:39:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:39:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:39:06,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:39:06,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:39:06,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:39:06,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433104102] [2021-08-13 02:39:06,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433104102] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:39:06,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:39:06,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:39:06,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217521859] [2021-08-13 02:39:06,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:39:06,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:39:06,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:39:06,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:39:06,300 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-08-13 02:39:06,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:39:06,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-08-13 02:39:06,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:39:06,357 INFO L129 PetriNetUnfolder]: 94/325 cut-off events. [2021-08-13 02:39:06,358 INFO L130 PetriNetUnfolder]: For 210/254 co-relation queries the response was YES. [2021-08-13 02:39:06,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 325 events. 94/325 cut-off events. For 210/254 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1445 event pairs, 11 based on Foata normal form. 8/310 useless extension candidates. Maximal degree in co-relation 864. Up to 124 conditions per place. [2021-08-13 02:39:06,361 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 16 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2021-08-13 02:39:06,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 309 flow [2021-08-13 02:39:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:39:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:39:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2021-08-13 02:39:06,363 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2021-08-13 02:39:06,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2021-08-13 02:39:06,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2021-08-13 02:39:06,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:39:06,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2021-08-13 02:39:06,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,366 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2021-08-13 02:39:06,366 INFO L482 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 309 flow [2021-08-13 02:39:06,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,366 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:39:06,366 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:39:06,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 02:39:06,367 INFO L430 AbstractCegarLoop]: === Iteration 5 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:39:06,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:39:06,367 INFO L82 PathProgramCache]: Analyzing trace with hash -937204554, now seen corresponding path program 2 times [2021-08-13 02:39:06,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:39:06,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937286454] [2021-08-13 02:39:06,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:39:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:39:06,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:39:06,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:39:06,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:39:06,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937286454] [2021-08-13 02:39:06,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937286454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:39:06,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:39:06,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:39:06,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777717565] [2021-08-13 02:39:06,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:39:06,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:39:06,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:39:06,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:39:06,390 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-08-13 02:39:06,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:39:06,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-08-13 02:39:06,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:39:06,445 INFO L129 PetriNetUnfolder]: 86/317 cut-off events. [2021-08-13 02:39:06,445 INFO L130 PetriNetUnfolder]: For 415/481 co-relation queries the response was YES. [2021-08-13 02:39:06,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 317 events. 86/317 cut-off events. For 415/481 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1294 event pairs, 9 based on Foata normal form. 9/309 useless extension candidates. Maximal degree in co-relation 959. Up to 112 conditions per place. [2021-08-13 02:39:06,449 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 16 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2021-08-13 02:39:06,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 341 flow [2021-08-13 02:39:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:39:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:39:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2021-08-13 02:39:06,451 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 02:39:06,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2021-08-13 02:39:06,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2021-08-13 02:39:06,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:39:06,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2021-08-13 02:39:06,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,454 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2021-08-13 02:39:06,454 INFO L482 AbstractCegarLoop]: Abstraction has has 52 places, 55 transitions, 341 flow [2021-08-13 02:39:06,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,454 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:39:06,454 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:39:06,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 02:39:06,455 INFO L430 AbstractCegarLoop]: === Iteration 6 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:39:06,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:39:06,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2031044475, now seen corresponding path program 1 times [2021-08-13 02:39:06,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:39:06,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096440349] [2021-08-13 02:39:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:39:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:39:06,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:39:06,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 02:39:06,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:39:06,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:39:06,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096440349] [2021-08-13 02:39:06,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096440349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:39:06,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:39:06,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 02:39:06,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905459516] [2021-08-13 02:39:06,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 02:39:06,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:39:06,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 02:39:06,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 02:39:06,494 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 46 [2021-08-13 02:39:06,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 55 transitions, 341 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:39:06,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 46 [2021-08-13 02:39:06,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:39:06,581 INFO L129 PetriNetUnfolder]: 243/570 cut-off events. [2021-08-13 02:39:06,582 INFO L130 PetriNetUnfolder]: For 506/535 co-relation queries the response was YES. [2021-08-13 02:39:06,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 570 events. 243/570 cut-off events. For 506/535 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2319 event pairs, 41 based on Foata normal form. 18/563 useless extension candidates. Maximal degree in co-relation 1633. Up to 248 conditions per place. [2021-08-13 02:39:06,588 INFO L132 encePairwiseOnDemand]: 42/46 looper letters, 15 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2021-08-13 02:39:06,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 387 flow [2021-08-13 02:39:06,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-13 02:39:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-13 02:39:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2021-08-13 02:39:06,590 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7554347826086957 [2021-08-13 02:39:06,590 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 139 transitions. [2021-08-13 02:39:06,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 139 transitions. [2021-08-13 02:39:06,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:39:06,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 139 transitions. [2021-08-13 02:39:06,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,593 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2021-08-13 02:39:06,593 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 387 flow [2021-08-13 02:39:06,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,593 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:39:06,593 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:39:06,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 02:39:06,594 INFO L430 AbstractCegarLoop]: === Iteration 7 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:39:06,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:39:06,594 INFO L82 PathProgramCache]: Analyzing trace with hash 755806298, now seen corresponding path program 1 times [2021-08-13 02:39:06,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:39:06,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823460272] [2021-08-13 02:39:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:39:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:39:06,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 02:39:06,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:39:06,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 02:39:06,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 02:39:06,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:39:06,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:39:06,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823460272] [2021-08-13 02:39:06,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823460272] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:39:06,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:39:06,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 02:39:06,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120318288] [2021-08-13 02:39:06,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 02:39:06,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:39:06,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 02:39:06,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 02:39:06,660 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 02:39:06,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:39:06,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 02:39:06,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:39:06,841 INFO L129 PetriNetUnfolder]: 275/656 cut-off events. [2021-08-13 02:39:06,843 INFO L130 PetriNetUnfolder]: For 649/705 co-relation queries the response was YES. [2021-08-13 02:39:06,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2241 conditions, 656 events. 275/656 cut-off events. For 649/705 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2744 event pairs, 32 based on Foata normal form. 18/652 useless extension candidates. Maximal degree in co-relation 2216. Up to 298 conditions per place. [2021-08-13 02:39:06,851 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 17 selfloop transitions, 4 changer transitions 21/83 dead transitions. [2021-08-13 02:39:06,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 563 flow [2021-08-13 02:39:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 02:39:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 02:39:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2021-08-13 02:39:06,855 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7329192546583851 [2021-08-13 02:39:06,855 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 236 transitions. [2021-08-13 02:39:06,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 236 transitions. [2021-08-13 02:39:06,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:39:06,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 236 transitions. [2021-08-13 02:39:06,856 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) [2021-08-13 02:39:06,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,858 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,858 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2021-08-13 02:39:06,858 INFO L482 AbstractCegarLoop]: Abstraction has has 61 places, 83 transitions, 563 flow [2021-08-13 02:39:06,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,858 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:39:06,859 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:39:06,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 02:39:06,859 INFO L430 AbstractCegarLoop]: === Iteration 8 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:39:06,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:39:06,859 INFO L82 PathProgramCache]: Analyzing trace with hash -804605292, now seen corresponding path program 2 times [2021-08-13 02:39:06,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:39:06,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427374245] [2021-08-13 02:39:06,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:39:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:39:06,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:39:06,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 02:39:06,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:06,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:39:06,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:39:06,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427374245] [2021-08-13 02:39:06,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427374245] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:39:06,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:39:06,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 02:39:06,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003313900] [2021-08-13 02:39:06,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 02:39:06,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:39:06,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 02:39:06,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 02:39:06,904 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 46 [2021-08-13 02:39:06,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 83 transitions, 563 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:06,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:39:06,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 46 [2021-08-13 02:39:06,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:39:07,004 INFO L129 PetriNetUnfolder]: 285/685 cut-off events. [2021-08-13 02:39:07,004 INFO L130 PetriNetUnfolder]: For 789/879 co-relation queries the response was YES. [2021-08-13 02:39:07,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 685 events. 285/685 cut-off events. For 789/879 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2879 event pairs, 30 based on Foata normal form. 24/686 useless extension candidates. Maximal degree in co-relation 2667. Up to 330 conditions per place. [2021-08-13 02:39:07,012 INFO L132 encePairwiseOnDemand]: 42/46 looper letters, 19 selfloop transitions, 3 changer transitions 25/89 dead transitions. [2021-08-13 02:39:07,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 693 flow [2021-08-13 02:39:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-13 02:39:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-13 02:39:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2021-08-13 02:39:07,014 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7554347826086957 [2021-08-13 02:39:07,014 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 139 transitions. [2021-08-13 02:39:07,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 139 transitions. [2021-08-13 02:39:07,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:39:07,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 139 transitions. [2021-08-13 02:39:07,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:07,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:07,016 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:07,016 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2021-08-13 02:39:07,016 INFO L482 AbstractCegarLoop]: Abstraction has has 64 places, 89 transitions, 693 flow [2021-08-13 02:39:07,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:07,016 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:39:07,016 INFO L266 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 02:39:07,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 02:39:07,018 INFO L430 AbstractCegarLoop]: === Iteration 9 === [Process2Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT]=== [2021-08-13 02:39:07,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:39:07,018 INFO L82 PathProgramCache]: Analyzing trace with hash 141026667, now seen corresponding path program 3 times [2021-08-13 02:39:07,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:39:07,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542136374] [2021-08-13 02:39:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:39:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:39:07,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:07,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:07,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:07,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 02:39:07,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:07,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:39:07,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:07,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 02:39:07,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:07,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 02:39:07,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:39:07,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:39:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:39:07,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:39:07,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542136374] [2021-08-13 02:39:07,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542136374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:39:07,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:39:07,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 02:39:07,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038698676] [2021-08-13 02:39:07,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 02:39:07,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:39:07,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 02:39:07,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 02:39:07,083 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 46 [2021-08-13 02:39:07,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 89 transitions, 693 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:07,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:39:07,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 46 [2021-08-13 02:39:07,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:39:07,240 INFO L129 PetriNetUnfolder]: 215/516 cut-off events. [2021-08-13 02:39:07,240 INFO L130 PetriNetUnfolder]: For 765/885 co-relation queries the response was YES. [2021-08-13 02:39:07,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2444 conditions, 516 events. 215/516 cut-off events. For 765/885 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2178 event pairs, 11 based on Foata normal form. 29/534 useless extension candidates. Maximal degree in co-relation 2411. Up to 285 conditions per place. [2021-08-13 02:39:07,245 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 0 selfloop transitions, 0 changer transitions 108/108 dead transitions. [2021-08-13 02:39:07,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 1028 flow [2021-08-13 02:39:07,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 02:39:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 02:39:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2021-08-13 02:39:07,246 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7360248447204969 [2021-08-13 02:39:07,246 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 237 transitions. [2021-08-13 02:39:07,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 237 transitions. [2021-08-13 02:39:07,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:39:07,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 237 transitions. [2021-08-13 02:39:07,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:07,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:07,249 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:07,249 INFO L348 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2021-08-13 02:39:07,249 INFO L482 AbstractCegarLoop]: Abstraction has has 68 places, 108 transitions, 1028 flow [2021-08-13 02:39:07,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 02:39:07,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown