/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-ext/20_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 17:23:18,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 17:23:18,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 17:23:18,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 17:23:18,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 17:23:18,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 17:23:18,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 17:23:18,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 17:23:18,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 17:23:18,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 17:23:18,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 17:23:18,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 17:23:18,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 17:23:18,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 17:23:18,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 17:23:18,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 17:23:18,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 17:23:18,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 17:23:18,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 17:23:18,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 17:23:18,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 17:23:18,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 17:23:18,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 17:23:18,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 17:23:18,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-11 17:23:18,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 17:23:18,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 17:23:18,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 17:23:18,726 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 17:23:18,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 17:23:18,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 17:23:18,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 17:23:18,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 17:23:18,769 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 17:23:18,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 17:23:18,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 17:23:18,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 17:23:18,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 17:23:18,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 17:23:18,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 17:23:18,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 17:23:18,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 17:23:18,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 17:23:18,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 17:23:18,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 17:23:18,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 17:23:18,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 17:23:18,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 17:23:18,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 17:23:18,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 17:23:18,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 17:23:18,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 17:23:18,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 17:23:18,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 17:23:18,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 17:23:18,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 17:23:18,775 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 17:23:18,775 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 17:23:18,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 17:23:19,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 17:23:19,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 17:23:19,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 17:23:19,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 17:23:19,113 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 17:23:19,114 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-11 17:23:19,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4e24368a/36874f0aef454fca9db962dd99548d98/FLAG7f0f87858 [2020-10-11 17:23:19,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 17:23:19,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/20_lamport.i [2020-10-11 17:23:19,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4e24368a/36874f0aef454fca9db962dd99548d98/FLAG7f0f87858 [2020-10-11 17:23:19,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4e24368a/36874f0aef454fca9db962dd99548d98 [2020-10-11 17:23:19,961 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 17:23:19,965 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 17:23:19,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 17:23:19,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 17:23:19,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 17:23:19,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:23:19" (1/1) ... [2020-10-11 17:23:19,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6330fec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:19, skipping insertion in model container [2020-10-11 17:23:19,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:23:19" (1/1) ... [2020-10-11 17:23:19,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 17:23:20,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 17:23:20,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 17:23:20,522 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 17:23:20,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 17:23:20,666 INFO L208 MainTranslator]: Completed translation [2020-10-11 17:23:20,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20 WrapperNode [2020-10-11 17:23:20,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 17:23:20,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 17:23:20,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 17:23:20,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 17:23:20,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (1/1) ... [2020-10-11 17:23:20,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (1/1) ... [2020-10-11 17:23:20,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 17:23:20,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 17:23:20,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 17:23:20,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 17:23:20,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (1/1) ... [2020-10-11 17:23:20,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (1/1) ... [2020-10-11 17:23:20,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (1/1) ... [2020-10-11 17:23:20,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (1/1) ... [2020-10-11 17:23:20,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (1/1) ... [2020-10-11 17:23:20,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (1/1) ... [2020-10-11 17:23:20,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (1/1) ... [2020-10-11 17:23:20,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 17:23:20,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 17:23:20,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 17:23:20,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 17:23:20,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (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 [2020-10-11 17:23:20,816 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-11 17:23:20,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-11 17:23:20,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 17:23:20,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 17:23:20,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 17:23:20,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 17:23:20,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 17:23:20,819 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 17:23:21,130 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 17:23:21,130 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-11 17:23:21,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:23:21 BoogieIcfgContainer [2020-10-11 17:23:21,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 17:23:21,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 17:23:21,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 17:23:21,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 17:23:21,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:23:19" (1/3) ... [2020-10-11 17:23:21,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286a37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:23:21, skipping insertion in model container [2020-10-11 17:23:21,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:23:20" (2/3) ... [2020-10-11 17:23:21,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2286a37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:23:21, skipping insertion in model container [2020-10-11 17:23:21,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:23:21" (3/3) ... [2020-10-11 17:23:21,142 INFO L111 eAbstractionObserver]: Analyzing ICFG 20_lamport.i [2020-10-11 17:23:21,155 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 17:23:21,163 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-11 17:23:21,164 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 17:23:21,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,199 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 17:23:21,220 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 17:23:21,244 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 17:23:21,244 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 17:23:21,244 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 17:23:21,244 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 17:23:21,245 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 17:23:21,245 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 17:23:21,245 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 17:23:21,245 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 17:23:21,261 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 92 transitions, 189 flow [2020-10-11 17:23:21,310 INFO L129 PetriNetUnfolder]: 24/91 cut-off events. [2020-10-11 17:23:21,310 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 17:23:21,317 INFO L80 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 91 events. 24/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2020-10-11 17:23:21,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 92 transitions, 189 flow [2020-10-11 17:23:21,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 91 transitions, 185 flow [2020-10-11 17:23:21,336 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2020-10-11 17:23:21,336 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 17:23:21,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:21,338 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:21,338 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:21,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:21,347 INFO L82 PathProgramCache]: Analyzing trace with hash 726531169, now seen corresponding path program 1 times [2020-10-11 17:23:21,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:21,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556936661] [2020-10-11 17:23:21,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 17:23:21,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556936661] [2020-10-11 17:23:21,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:21,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-11 17:23:21,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884463951] [2020-10-11 17:23:21,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-11 17:23:21,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:21,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-11 17:23:21,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-11 17:23:21,561 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 92 [2020-10-11 17:23:21,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 185 flow. Second operand 2 states. [2020-10-11 17:23:21,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:21,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 92 [2020-10-11 17:23:21,564 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:21,595 INFO L129 PetriNetUnfolder]: 12/79 cut-off events. [2020-10-11 17:23:21,596 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 17:23:21,598 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 79 events. 12/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 12/77 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2020-10-11 17:23:21,600 INFO L132 encePairwiseOnDemand]: 80/92 looper letters, 0 selfloop transitions, 0 changer transitions 0/79 dead transitions. [2020-10-11 17:23:21,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 161 flow [2020-10-11 17:23:21,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-11 17:23:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-11 17:23:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 172 transitions. [2020-10-11 17:23:21,625 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2020-10-11 17:23:21,626 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 172 transitions. [2020-10-11 17:23:21,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 172 transitions. [2020-10-11 17:23:21,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:21,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 172 transitions. [2020-10-11 17:23:21,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-11 17:23:21,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-11 17:23:21,646 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-11 17:23:21,648 INFO L185 Difference]: Start difference. First operand has 71 places, 91 transitions, 185 flow. Second operand 2 states and 172 transitions. [2020-10-11 17:23:21,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 161 flow [2020-10-11 17:23:21,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 17:23:21,659 INFO L241 Difference]: Finished difference. Result has 71 places, 79 transitions, 160 flow [2020-10-11 17:23:21,662 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=160, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2020-10-11 17:23:21,663 INFO L341 CegarLoopForPetriNet]: 71 programPoint places, 0 predicate places. [2020-10-11 17:23:21,664 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 160 flow [2020-10-11 17:23:21,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-11 17:23:21,664 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:21,664 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:21,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 17:23:21,665 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:21,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1429293749, now seen corresponding path program 1 times [2020-10-11 17:23:21,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:21,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637674585] [2020-10-11 17:23:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 17:23:21,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637674585] [2020-10-11 17:23:21,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:21,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:21,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254107] [2020-10-11 17:23:21,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:21,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:21,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:21,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:21,833 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2020-10-11 17:23:21,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 160 flow. Second operand 3 states. [2020-10-11 17:23:21,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:21,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2020-10-11 17:23:21,834 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:21,881 INFO L129 PetriNetUnfolder]: 13/108 cut-off events. [2020-10-11 17:23:21,881 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 17:23:21,884 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 108 events. 13/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 239 event pairs, 1 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 121. Up to 8 conditions per place. [2020-10-11 17:23:21,886 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 3 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2020-10-11 17:23:21,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 174 flow [2020-10-11 17:23:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:21,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2020-10-11 17:23:21,894 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2020-10-11 17:23:21,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2020-10-11 17:23:21,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2020-10-11 17:23:21,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:21,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2020-10-11 17:23:21,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:21,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:21,906 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:21,906 INFO L185 Difference]: Start difference. First operand has 71 places, 79 transitions, 160 flow. Second operand 3 states and 233 transitions. [2020-10-11 17:23:21,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 174 flow [2020-10-11 17:23:21,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-11 17:23:21,912 INFO L241 Difference]: Finished difference. Result has 75 places, 80 transitions, 180 flow [2020-10-11 17:23:21,915 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2020-10-11 17:23:21,916 INFO L341 CegarLoopForPetriNet]: 71 programPoint places, 4 predicate places. [2020-10-11 17:23:21,916 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 180 flow [2020-10-11 17:23:21,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:21,916 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:21,917 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:21,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 17:23:21,918 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:21,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:21,918 INFO L82 PathProgramCache]: Analyzing trace with hash 913195556, now seen corresponding path program 1 times [2020-10-11 17:23:21,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:21,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772003136] [2020-10-11 17:23:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 17:23:22,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772003136] [2020-10-11 17:23:22,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:22,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:22,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930850976] [2020-10-11 17:23:22,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:22,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:22,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:22,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:22,094 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2020-10-11 17:23:22,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 180 flow. Second operand 3 states. [2020-10-11 17:23:22,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:22,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2020-10-11 17:23:22,095 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:22,123 INFO L129 PetriNetUnfolder]: 14/121 cut-off events. [2020-10-11 17:23:22,124 INFO L130 PetriNetUnfolder]: For 16/19 co-relation queries the response was YES. [2020-10-11 17:23:22,125 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 121 events. 14/121 cut-off events. For 16/19 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 304 event pairs, 2 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 155. Up to 11 conditions per place. [2020-10-11 17:23:22,126 INFO L132 encePairwiseOnDemand]: 88/92 looper letters, 4 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2020-10-11 17:23:22,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 192 flow [2020-10-11 17:23:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:22,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2020-10-11 17:23:22,130 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2020-10-11 17:23:22,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2020-10-11 17:23:22,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2020-10-11 17:23:22,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:22,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2020-10-11 17:23:22,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:22,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:22,133 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:22,133 INFO L185 Difference]: Start difference. First operand has 75 places, 80 transitions, 180 flow. Second operand 3 states and 233 transitions. [2020-10-11 17:23:22,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 192 flow [2020-10-11 17:23:22,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:22,137 INFO L241 Difference]: Finished difference. Result has 76 places, 80 transitions, 184 flow [2020-10-11 17:23:22,137 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2020-10-11 17:23:22,138 INFO L341 CegarLoopForPetriNet]: 71 programPoint places, 5 predicate places. [2020-10-11 17:23:22,138 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 184 flow [2020-10-11 17:23:22,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:22,138 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:22,139 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:22,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 17:23:22,139 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:22,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2085000953, now seen corresponding path program 1 times [2020-10-11 17:23:22,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:22,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232777228] [2020-10-11 17:23:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 17:23:22,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232777228] [2020-10-11 17:23:22,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:22,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:22,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543524953] [2020-10-11 17:23:22,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:22,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:22,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:22,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:22,333 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 92 [2020-10-11 17:23:22,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 184 flow. Second operand 3 states. [2020-10-11 17:23:22,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:22,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 92 [2020-10-11 17:23:22,334 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:22,388 INFO L129 PetriNetUnfolder]: 86/350 cut-off events. [2020-10-11 17:23:22,389 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-10-11 17:23:22,392 INFO L80 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 350 events. 86/350 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1746 event pairs, 13 based on Foata normal form. 11/336 useless extension candidates. Maximal degree in co-relation 511. Up to 78 conditions per place. [2020-10-11 17:23:22,394 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 12 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2020-10-11 17:23:22,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 84 transitions, 226 flow [2020-10-11 17:23:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2020-10-11 17:23:22,397 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8079710144927537 [2020-10-11 17:23:22,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2020-10-11 17:23:22,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2020-10-11 17:23:22,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:22,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2020-10-11 17:23:22,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:22,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:22,400 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:22,400 INFO L185 Difference]: Start difference. First operand has 76 places, 80 transitions, 184 flow. Second operand 3 states and 223 transitions. [2020-10-11 17:23:22,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 84 transitions, 226 flow [2020-10-11 17:23:22,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-11 17:23:22,405 INFO L241 Difference]: Finished difference. Result has 79 places, 84 transitions, 228 flow [2020-10-11 17:23:22,405 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2020-10-11 17:23:22,406 INFO L341 CegarLoopForPetriNet]: 71 programPoint places, 8 predicate places. [2020-10-11 17:23:22,406 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 228 flow [2020-10-11 17:23:22,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:22,406 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:22,406 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:22,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 17:23:22,407 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:22,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:22,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1058477511, now seen corresponding path program 2 times [2020-10-11 17:23:22,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:22,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574428088] [2020-10-11 17:23:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 17:23:22,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574428088] [2020-10-11 17:23:22,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:22,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:22,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062756851] [2020-10-11 17:23:22,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:22,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:22,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:22,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:22,498 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 92 [2020-10-11 17:23:22,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 228 flow. Second operand 3 states. [2020-10-11 17:23:22,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:22,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 92 [2020-10-11 17:23:22,499 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:22,578 INFO L129 PetriNetUnfolder]: 148/596 cut-off events. [2020-10-11 17:23:22,578 INFO L130 PetriNetUnfolder]: For 76/78 co-relation queries the response was YES. [2020-10-11 17:23:22,581 INFO L80 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 596 events. 148/596 cut-off events. For 76/78 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3717 event pairs, 19 based on Foata normal form. 7/554 useless extension candidates. Maximal degree in co-relation 965. Up to 95 conditions per place. [2020-10-11 17:23:22,584 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 6 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2020-10-11 17:23:22,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 87 transitions, 252 flow [2020-10-11 17:23:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:22,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2020-10-11 17:23:22,586 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2020-10-11 17:23:22,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2020-10-11 17:23:22,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2020-10-11 17:23:22,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:22,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2020-10-11 17:23:22,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:22,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:22,590 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:22,590 INFO L185 Difference]: Start difference. First operand has 79 places, 84 transitions, 228 flow. Second operand 3 states and 233 transitions. [2020-10-11 17:23:22,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 87 transitions, 252 flow [2020-10-11 17:23:22,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:22,596 INFO L241 Difference]: Finished difference. Result has 81 places, 87 transitions, 246 flow [2020-10-11 17:23:22,597 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2020-10-11 17:23:22,597 INFO L341 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2020-10-11 17:23:22,597 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 246 flow [2020-10-11 17:23:22,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:22,597 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:22,598 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:22,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 17:23:22,598 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:22,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:22,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1275863469, now seen corresponding path program 3 times [2020-10-11 17:23:22,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:22,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948843479] [2020-10-11 17:23:22,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 17:23:22,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948843479] [2020-10-11 17:23:22,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:22,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:22,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991523009] [2020-10-11 17:23:22,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:22,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:22,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:22,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:22,757 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 92 [2020-10-11 17:23:22,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 246 flow. Second operand 3 states. [2020-10-11 17:23:22,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:22,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 92 [2020-10-11 17:23:22,758 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:22,840 INFO L129 PetriNetUnfolder]: 142/654 cut-off events. [2020-10-11 17:23:22,840 INFO L130 PetriNetUnfolder]: For 144/180 co-relation queries the response was YES. [2020-10-11 17:23:22,843 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 654 events. 142/654 cut-off events. For 144/180 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4377 event pairs, 22 based on Foata normal form. 34/655 useless extension candidates. Maximal degree in co-relation 1145. Up to 131 conditions per place. [2020-10-11 17:23:22,845 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 11 selfloop transitions, 5 changer transitions 6/91 dead transitions. [2020-10-11 17:23:22,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 91 transitions, 306 flow [2020-10-11 17:23:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2020-10-11 17:23:22,848 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8007246376811594 [2020-10-11 17:23:22,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2020-10-11 17:23:22,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2020-10-11 17:23:22,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:22,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2020-10-11 17:23:22,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:22,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:22,850 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:22,850 INFO L185 Difference]: Start difference. First operand has 81 places, 87 transitions, 246 flow. Second operand 3 states and 221 transitions. [2020-10-11 17:23:22,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 91 transitions, 306 flow [2020-10-11 17:23:22,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 91 transitions, 300 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:22,855 INFO L241 Difference]: Finished difference. Result has 83 places, 85 transitions, 262 flow [2020-10-11 17:23:22,856 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2020-10-11 17:23:22,856 INFO L341 CegarLoopForPetriNet]: 71 programPoint places, 12 predicate places. [2020-10-11 17:23:22,856 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 262 flow [2020-10-11 17:23:22,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:22,856 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:22,857 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:22,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 17:23:22,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:22,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:22,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1815425811, now seen corresponding path program 4 times [2020-10-11 17:23:22,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:22,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579117759] [2020-10-11 17:23:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 17:23:22,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579117759] [2020-10-11 17:23:22,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:22,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:22,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496298497] [2020-10-11 17:23:22,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:22,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:22,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:22,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:22,918 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2020-10-11 17:23:22,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 262 flow. Second operand 3 states. [2020-10-11 17:23:22,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:22,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2020-10-11 17:23:22,919 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:22,985 INFO L129 PetriNetUnfolder]: 94/559 cut-off events. [2020-10-11 17:23:22,986 INFO L130 PetriNetUnfolder]: For 154/170 co-relation queries the response was YES. [2020-10-11 17:23:22,988 INFO L80 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 559 events. 94/559 cut-off events. For 154/170 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3654 event pairs, 14 based on Foata normal form. 8/539 useless extension candidates. Maximal degree in co-relation 965. Up to 72 conditions per place. [2020-10-11 17:23:22,990 INFO L132 encePairwiseOnDemand]: 89/92 looper letters, 6 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2020-10-11 17:23:22,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 284 flow [2020-10-11 17:23:22,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2020-10-11 17:23:22,992 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8442028985507246 [2020-10-11 17:23:22,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2020-10-11 17:23:22,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2020-10-11 17:23:22,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:22,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2020-10-11 17:23:22,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:22,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:22,995 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:22,995 INFO L185 Difference]: Start difference. First operand has 83 places, 85 transitions, 262 flow. Second operand 3 states and 233 transitions. [2020-10-11 17:23:22,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 284 flow [2020-10-11 17:23:22,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 86 transitions, 268 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:22,999 INFO L241 Difference]: Finished difference. Result has 85 places, 86 transitions, 266 flow [2020-10-11 17:23:23,000 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2020-10-11 17:23:23,000 INFO L341 CegarLoopForPetriNet]: 71 programPoint places, 14 predicate places. [2020-10-11 17:23:23,000 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 266 flow [2020-10-11 17:23:23,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:23,001 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:23,001 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:23,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 17:23:23,001 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash -684287629, now seen corresponding path program 1 times [2020-10-11 17:23:23,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:23,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606939072] [2020-10-11 17:23:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 17:23:23,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606939072] [2020-10-11 17:23:23,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:23,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:23,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414081193] [2020-10-11 17:23:23,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:23,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:23,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:23,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:23,073 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 92 [2020-10-11 17:23:23,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 266 flow. Second operand 3 states. [2020-10-11 17:23:23,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:23,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 92 [2020-10-11 17:23:23,075 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:23,208 INFO L129 PetriNetUnfolder]: 91/610 cut-off events. [2020-10-11 17:23:23,209 INFO L130 PetriNetUnfolder]: For 77/89 co-relation queries the response was YES. [2020-10-11 17:23:23,212 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 610 events. 91/610 cut-off events. For 77/89 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4124 event pairs, 16 based on Foata normal form. 7/597 useless extension candidates. Maximal degree in co-relation 1015. Up to 56 conditions per place. [2020-10-11 17:23:23,214 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 3 selfloop transitions, 4 changer transitions 2/87 dead transitions. [2020-10-11 17:23:23,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 282 flow [2020-10-11 17:23:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2020-10-11 17:23:23,217 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2020-10-11 17:23:23,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2020-10-11 17:23:23,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2020-10-11 17:23:23,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:23,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2020-10-11 17:23:23,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:23,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:23,220 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:23,220 INFO L185 Difference]: Start difference. First operand has 85 places, 86 transitions, 266 flow. Second operand 3 states and 230 transitions. [2020-10-11 17:23:23,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 282 flow [2020-10-11 17:23:23,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:23,225 INFO L241 Difference]: Finished difference. Result has 86 places, 85 transitions, 272 flow [2020-10-11 17:23:23,225 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2020-10-11 17:23:23,226 INFO L341 CegarLoopForPetriNet]: 71 programPoint places, 15 predicate places. [2020-10-11 17:23:23,226 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 272 flow [2020-10-11 17:23:23,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:23,226 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 17:23:23,227 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 17:23:23,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 17:23:23,228 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 17:23:23,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 17:23:23,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1214385829, now seen corresponding path program 1 times [2020-10-11 17:23:23,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 17:23:23,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003556253] [2020-10-11 17:23:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 17:23:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 17:23:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 17:23:23,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003556253] [2020-10-11 17:23:23,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 17:23:23,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-11 17:23:23,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305639563] [2020-10-11 17:23:23,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 17:23:23,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 17:23:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 17:23:23,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 17:23:23,322 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 92 [2020-10-11 17:23:23,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 272 flow. Second operand 3 states. [2020-10-11 17:23:23,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 17:23:23,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 92 [2020-10-11 17:23:23,323 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 17:23:23,399 INFO L129 PetriNetUnfolder]: 79/482 cut-off events. [2020-10-11 17:23:23,399 INFO L130 PetriNetUnfolder]: For 46/57 co-relation queries the response was YES. [2020-10-11 17:23:23,401 INFO L80 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 482 events. 79/482 cut-off events. For 46/57 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2863 event pairs, 11 based on Foata normal form. 11/484 useless extension candidates. Maximal degree in co-relation 848. Up to 43 conditions per place. [2020-10-11 17:23:23,402 INFO L132 encePairwiseOnDemand]: 87/92 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2020-10-11 17:23:23,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 276 flow [2020-10-11 17:23:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 17:23:23,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-11 17:23:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2020-10-11 17:23:23,405 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2020-10-11 17:23:23,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2020-10-11 17:23:23,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2020-10-11 17:23:23,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 17:23:23,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2020-10-11 17:23:23,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-11 17:23:23,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-11 17:23:23,407 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-11 17:23:23,407 INFO L185 Difference]: Start difference. First operand has 86 places, 85 transitions, 272 flow. Second operand 3 states and 230 transitions. [2020-10-11 17:23:23,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 276 flow [2020-10-11 17:23:23,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 266 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-11 17:23:23,412 INFO L241 Difference]: Finished difference. Result has 81 places, 0 transitions, 0 flow [2020-10-11 17:23:23,412 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=81, PETRI_TRANSITIONS=0} [2020-10-11 17:23:23,412 INFO L341 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2020-10-11 17:23:23,412 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 0 transitions, 0 flow [2020-10-11 17:23:23,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 17:23:23,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 17:23:23,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 05:23:23 BasicIcfg [2020-10-11 17:23:23,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 17:23:23,430 INFO L168 Benchmark]: Toolchain (without parser) took 3462.43 ms. Allocated memory was 253.2 MB in the beginning and 377.0 MB in the end (delta: 123.7 MB). Free memory was 208.6 MB in the beginning and 307.1 MB in the end (delta: -98.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:23,432 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 17:23:23,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.92 ms. Allocated memory was 253.2 MB in the beginning and 320.9 MB in the end (delta: 67.6 MB). Free memory was 208.6 MB in the beginning and 278.8 MB in the end (delta: -70.2 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:23,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.75 ms. Allocated memory is still 320.9 MB. Free memory was 278.8 MB in the beginning and 276.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:23,435 INFO L168 Benchmark]: Boogie Preprocessor took 27.38 ms. Allocated memory is still 320.9 MB. Free memory was 276.2 MB in the beginning and 273.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:23,436 INFO L168 Benchmark]: RCFGBuilder took 384.89 ms. Allocated memory is still 320.9 MB. Free memory was 273.7 MB in the beginning and 251.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 17:23:23,439 INFO L168 Benchmark]: TraceAbstraction took 2289.17 ms. Allocated memory was 320.9 MB in the beginning and 377.0 MB in the end (delta: 56.1 MB). Free memory was 249.4 MB in the beginning and 307.1 MB in the end (delta: -57.7 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 17:23:23,450 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 701.92 ms. Allocated memory was 253.2 MB in the beginning and 320.9 MB in the end (delta: 67.6 MB). Free memory was 208.6 MB in the beginning and 278.8 MB in the end (delta: -70.2 MB). Peak memory consumption was 32.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 50.75 ms. Allocated memory is still 320.9 MB. Free memory was 278.8 MB in the beginning and 276.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.38 ms. Allocated memory is still 320.9 MB. Free memory was 276.2 MB in the beginning and 273.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 384.89 ms. Allocated memory is still 320.9 MB. Free memory was 273.7 MB in the beginning and 251.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2289.17 ms. Allocated memory was 320.9 MB in the beginning and 377.0 MB in the end (delta: 56.1 MB). Free memory was 249.4 MB in the beginning and 307.1 MB in the end (delta: -57.7 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 724]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 49 SDslu, 0 SDs, 0 SdLazy, 119 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 14133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...