/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 00:52:37,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 00:52:37,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 00:52:37,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 00:52:37,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 00:52:37,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 00:52:37,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 00:52:37,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 00:52:37,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 00:52:37,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 00:52:37,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 00:52:37,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 00:52:37,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 00:52:37,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 00:52:37,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 00:52:37,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 00:52:37,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 00:52:37,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 00:52:37,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 00:52:37,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 00:52:37,771 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 00:52:37,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 00:52:37,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 00:52:37,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 00:52:37,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 00:52:37,854 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 00:52:37,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 00:52:37,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 00:52:37,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 00:52:37,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 00:52:37,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 00:52:37,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 00:52:37,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 00:52:37,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 00:52:37,858 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 00:52:37,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 00:52:37,858 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 00:52:37,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 00:52:37,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 00:52:37,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 00:52:37,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 00:52:37,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 00:52:37,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:52:37,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 00:52:37,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 00:52:37,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 00:52:37,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 00:52:37,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 00:52:37,862 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 00:52:37,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 00:52:37,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 00:52:37,863 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 00:52:38,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 00:52:38,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 00:52:38,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 00:52:38,408 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 00:52:38,409 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 00:52:38,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i [2021-04-29 00:52:38,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdf2bfd8/a34c4b29dad940439a68edc8a80d126f/FLAG0f4d6fe97 [2021-04-29 00:52:39,398 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 00:52:39,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i [2021-04-29 00:52:39,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdf2bfd8/a34c4b29dad940439a68edc8a80d126f/FLAG0f4d6fe97 [2021-04-29 00:52:39,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efdf2bfd8/a34c4b29dad940439a68edc8a80d126f [2021-04-29 00:52:39,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 00:52:39,724 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 00:52:39,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 00:52:39,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 00:52:39,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 00:52:39,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:52:39" (1/1) ... [2021-04-29 00:52:39,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bb65a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:39, skipping insertion in model container [2021-04-29 00:52:39,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:52:39" (1/1) ... [2021-04-29 00:52:39,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 00:52:39,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 00:52:40,044 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i[949,962] [2021-04-29 00:52:40,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:52:40,432 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 00:52:40,457 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i[949,962] [2021-04-29 00:52:40,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:52:40,686 INFO L208 MainTranslator]: Completed translation [2021-04-29 00:52:40,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40 WrapperNode [2021-04-29 00:52:40,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 00:52:40,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 00:52:40,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 00:52:40,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 00:52:40,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (1/1) ... [2021-04-29 00:52:40,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (1/1) ... [2021-04-29 00:52:40,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 00:52:40,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 00:52:40,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 00:52:40,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 00:52:40,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (1/1) ... [2021-04-29 00:52:40,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (1/1) ... [2021-04-29 00:52:40,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (1/1) ... [2021-04-29 00:52:40,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (1/1) ... [2021-04-29 00:52:40,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (1/1) ... [2021-04-29 00:52:40,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (1/1) ... [2021-04-29 00:52:40,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (1/1) ... [2021-04-29 00:52:40,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 00:52:40,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 00:52:40,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 00:52:40,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 00:52:40,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (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 [2021-04-29 00:52:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 00:52:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 00:52:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 00:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 00:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-29 00:52:40,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-29 00:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-29 00:52:40,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-29 00:52:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-29 00:52:40,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-29 00:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 00:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 00:52:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 00:52:40,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 00:52:40,941 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 00:52:41,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 00:52:41,565 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-29 00:52:41,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:52:41 BoogieIcfgContainer [2021-04-29 00:52:41,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 00:52:41,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 00:52:41,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 00:52:41,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 00:52:41,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 12:52:39" (1/3) ... [2021-04-29 00:52:41,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e746c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:52:41, skipping insertion in model container [2021-04-29 00:52:41,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:52:40" (2/3) ... [2021-04-29 00:52:41,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e746c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:52:41, skipping insertion in model container [2021-04-29 00:52:41,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:52:41" (3/3) ... [2021-04-29 00:52:41,593 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_pso.opt.i [2021-04-29 00:52:41,605 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 00:52:41,612 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 00:52:41,613 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 00:52:41,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,730 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,731 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,731 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,732 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,732 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,733 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,736 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,737 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,737 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,738 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,740 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,740 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,751 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,751 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,751 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,754 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,757 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,763 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,766 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,768 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,791 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,791 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,792 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,792 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,799 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,800 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,800 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:52:41,809 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 00:52:41,845 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 00:52:41,905 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 00:52:41,906 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 00:52:41,906 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 00:52:41,906 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 00:52:41,907 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 00:52:41,907 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 00:52:41,907 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 00:52:41,907 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 00:52:41,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-04-29 00:52:42,032 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-04-29 00:52:42,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:52:42,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-04-29 00:52:42,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-04-29 00:52:42,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-04-29 00:52:42,048 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:52:42,071 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-04-29 00:52:42,078 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-04-29 00:52:42,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-04-29 00:52:42,111 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-04-29 00:52:42,112 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:52:42,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-04-29 00:52:42,120 INFO L146 LiptonReduction]: Number of co-enabled transitions 864 [2021-04-29 00:52:46,387 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:52:46,595 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:52:46,775 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-29 00:52:46,937 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-29 00:52:47,151 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:52:47,406 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:52:47,665 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:52:47,883 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:52:48,081 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:52:48,251 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:52:48,447 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:52:48,642 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:52:48,809 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 00:52:48,968 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 00:52:51,026 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-04-29 00:52:51,129 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-29 00:52:51,360 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-04-29 00:52:51,465 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-04-29 00:52:52,389 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-04-29 00:52:52,725 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-04-29 00:52:52,849 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-29 00:52:53,122 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-04-29 00:52:53,234 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-29 00:52:53,272 INFO L158 LiptonReduction]: Checked pairs total: 5406 [2021-04-29 00:52:53,273 INFO L160 LiptonReduction]: Total number of compositions: 91 [2021-04-29 00:52:53,279 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11232 [2021-04-29 00:52:53,330 INFO L129 PetriNetUnfolder]: 0/59 cut-off events. [2021-04-29 00:52:53,331 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:52:53,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:52:53,332 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:52:53,337 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:52:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:52:53,352 INFO L82 PathProgramCache]: Analyzing trace with hash -260371519, now seen corresponding path program 1 times [2021-04-29 00:52:53,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:52:53,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332672347] [2021-04-29 00:52:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:52:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:52:53,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:52:53,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:52:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:52:53,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332672347] [2021-04-29 00:52:53,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:52:53,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:52:53,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348167553] [2021-04-29 00:52:53,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:52:53,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:52:53,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:52:53,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:52:53,838 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 167 [2021-04-29 00:52:53,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:53,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:52:53,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 167 [2021-04-29 00:52:53,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:52:53,956 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-04-29 00:52:53,956 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:52:53,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 80 events. 5/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 391 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 77. Up to 18 conditions per place. [2021-04-29 00:52:53,959 INFO L132 encePairwiseOnDemand]: 151/167 looper letters, 1 selfloop transitions, 2 changer transitions 50/75 dead transitions. [2021-04-29 00:52:53,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 75 transitions, 211 flow [2021-04-29 00:52:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:52:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:52:53,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2021-04-29 00:52:53,981 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223552894211577 [2021-04-29 00:52:53,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2021-04-29 00:52:53,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2021-04-29 00:52:53,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:52:53,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2021-04-29 00:52:53,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,012 INFO L185 Difference]: Start difference. First operand has 80 places, 70 transitions, 149 flow. Second operand 3 states and 412 transitions. [2021-04-29 00:52:54,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 75 transitions, 211 flow [2021-04-29 00:52:54,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 208 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 00:52:54,020 INFO L241 Difference]: Finished difference. Result has 80 places, 25 transitions, 64 flow [2021-04-29 00:52:54,023 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=80, PETRI_TRANSITIONS=25} [2021-04-29 00:52:54,025 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 0 predicate places. [2021-04-29 00:52:54,026 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:52:54,026 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 25 transitions, 64 flow [2021-04-29 00:52:54,027 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 25 transitions, 64 flow [2021-04-29 00:52:54,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 64 flow [2021-04-29 00:52:54,032 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-04-29 00:52:54,033 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:52:54,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 0/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 51 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-04-29 00:52:54,034 INFO L146 LiptonReduction]: Number of co-enabled transitions 330 [2021-04-29 00:52:54,058 INFO L158 LiptonReduction]: Checked pairs total: 357 [2021-04-29 00:52:54,059 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:52:54,059 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-04-29 00:52:54,061 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 64 flow [2021-04-29 00:52:54,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,062 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:52:54,063 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:52:54,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 00:52:54,063 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:52:54,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:52:54,064 INFO L82 PathProgramCache]: Analyzing trace with hash 518397480, now seen corresponding path program 1 times [2021-04-29 00:52:54,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:52:54,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684358135] [2021-04-29 00:52:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:52:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:52:54,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:52:54,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:52:54,161 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:52:54,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:52:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:52:54,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684358135] [2021-04-29 00:52:54,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:52:54,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:52:54,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474739290] [2021-04-29 00:52:54,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:52:54,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:52:54,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:52:54,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:52:54,186 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 167 [2021-04-29 00:52:54,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:52:54,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 167 [2021-04-29 00:52:54,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:52:54,240 INFO L129 PetriNetUnfolder]: 14/88 cut-off events. [2021-04-29 00:52:54,240 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-04-29 00:52:54,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 88 events. 14/88 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 438 event pairs, 1 based on Foata normal form. 6/68 useless extension candidates. Maximal degree in co-relation 142. Up to 15 conditions per place. [2021-04-29 00:52:54,242 INFO L132 encePairwiseOnDemand]: 161/167 looper letters, 7 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2021-04-29 00:52:54,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 116 flow [2021-04-29 00:52:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:52:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:52:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2021-04-29 00:52:54,248 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.665868263473054 [2021-04-29 00:52:54,249 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2021-04-29 00:52:54,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2021-04-29 00:52:54,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:52:54,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2021-04-29 00:52:54,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,259 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,259 INFO L185 Difference]: Start difference. First operand has 35 places, 25 transitions, 64 flow. Second operand 5 states and 556 transitions. [2021-04-29 00:52:54,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 116 flow [2021-04-29 00:52:54,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:52:54,262 INFO L241 Difference]: Finished difference. Result has 40 places, 30 transitions, 108 flow [2021-04-29 00:52:54,262 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2021-04-29 00:52:54,263 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -40 predicate places. [2021-04-29 00:52:54,263 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:52:54,264 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 30 transitions, 108 flow [2021-04-29 00:52:54,264 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 30 transitions, 108 flow [2021-04-29 00:52:54,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 30 transitions, 108 flow [2021-04-29 00:52:54,278 INFO L129 PetriNetUnfolder]: 9/79 cut-off events. [2021-04-29 00:52:54,278 INFO L130 PetriNetUnfolder]: For 20/23 co-relation queries the response was YES. [2021-04-29 00:52:54,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 79 events. 9/79 cut-off events. For 20/23 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 393 event pairs, 3 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 140. Up to 18 conditions per place. [2021-04-29 00:52:54,281 INFO L146 LiptonReduction]: Number of co-enabled transitions 406 [2021-04-29 00:52:54,296 INFO L158 LiptonReduction]: Checked pairs total: 250 [2021-04-29 00:52:54,296 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:52:54,297 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-04-29 00:52:54,299 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 108 flow [2021-04-29 00:52:54,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,300 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:52:54,300 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:52:54,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 00:52:54,301 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:52:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:52:54,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1109572132, now seen corresponding path program 1 times [2021-04-29 00:52:54,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:52:54,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398311290] [2021-04-29 00:52:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:52:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:52:54,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:52:54,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:52:54,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:52:54,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:52:54,422 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:52:54,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:52:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:52:54,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398311290] [2021-04-29 00:52:54,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:52:54,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:52:54,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239442370] [2021-04-29 00:52:54,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:52:54,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:52:54,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:52:54,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:52:54,443 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 167 [2021-04-29 00:52:54,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:52:54,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 167 [2021-04-29 00:52:54,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:52:54,510 INFO L129 PetriNetUnfolder]: 9/88 cut-off events. [2021-04-29 00:52:54,511 INFO L130 PetriNetUnfolder]: For 74/112 co-relation queries the response was YES. [2021-04-29 00:52:54,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 88 events. 9/88 cut-off events. For 74/112 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 466 event pairs, 0 based on Foata normal form. 7/65 useless extension candidates. Maximal degree in co-relation 180. Up to 19 conditions per place. [2021-04-29 00:52:54,516 INFO L132 encePairwiseOnDemand]: 163/167 looper letters, 7 selfloop transitions, 3 changer transitions 5/33 dead transitions. [2021-04-29 00:52:54,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 153 flow [2021-04-29 00:52:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:52:54,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:52:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2021-04-29 00:52:54,523 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6631736526946108 [2021-04-29 00:52:54,523 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2021-04-29 00:52:54,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2021-04-29 00:52:54,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:52:54,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2021-04-29 00:52:54,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,530 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,530 INFO L185 Difference]: Start difference. First operand has 40 places, 30 transitions, 108 flow. Second operand 4 states and 443 transitions. [2021-04-29 00:52:54,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 153 flow [2021-04-29 00:52:54,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 00:52:54,534 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 100 flow [2021-04-29 00:52:54,535 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2021-04-29 00:52:54,535 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -36 predicate places. [2021-04-29 00:52:54,535 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:52:54,536 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 26 transitions, 100 flow [2021-04-29 00:52:54,536 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 26 transitions, 100 flow [2021-04-29 00:52:54,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 26 transitions, 100 flow [2021-04-29 00:52:54,543 INFO L129 PetriNetUnfolder]: 2/37 cut-off events. [2021-04-29 00:52:54,544 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-04-29 00:52:54,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 37 events. 2/37 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 99 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 72. Up to 8 conditions per place. [2021-04-29 00:52:54,545 INFO L146 LiptonReduction]: Number of co-enabled transitions 284 [2021-04-29 00:52:54,552 INFO L158 LiptonReduction]: Checked pairs total: 180 [2021-04-29 00:52:54,553 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:52:54,553 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-04-29 00:52:54,555 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 100 flow [2021-04-29 00:52:54,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,556 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:52:54,556 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:52:54,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 00:52:54,557 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:52:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:52:54,557 INFO L82 PathProgramCache]: Analyzing trace with hash 841181130, now seen corresponding path program 1 times [2021-04-29 00:52:54,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:52:54,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852377995] [2021-04-29 00:52:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:52:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:52:54,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:52:54,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:52:54,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:52:54,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:52:54,637 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:52:54,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:52:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:52:54,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852377995] [2021-04-29 00:52:54,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:52:54,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:52:54,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2149626] [2021-04-29 00:52:54,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:52:54,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:52:54,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:52:54,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:52:54,658 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 167 [2021-04-29 00:52:54,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:52:54,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 167 [2021-04-29 00:52:54,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:52:54,703 INFO L129 PetriNetUnfolder]: 3/55 cut-off events. [2021-04-29 00:52:54,703 INFO L130 PetriNetUnfolder]: For 56/59 co-relation queries the response was YES. [2021-04-29 00:52:54,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 55 events. 3/55 cut-off events. For 56/59 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 220 event pairs, 0 based on Foata normal form. 4/41 useless extension candidates. Maximal degree in co-relation 111. Up to 8 conditions per place. [2021-04-29 00:52:54,704 INFO L132 encePairwiseOnDemand]: 163/167 looper letters, 3 selfloop transitions, 3 changer transitions 6/29 dead transitions. [2021-04-29 00:52:54,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 29 transitions, 142 flow [2021-04-29 00:52:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:52:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:52:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2021-04-29 00:52:54,708 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6631736526946108 [2021-04-29 00:52:54,708 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2021-04-29 00:52:54,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2021-04-29 00:52:54,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:52:54,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2021-04-29 00:52:54,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,715 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,715 INFO L185 Difference]: Start difference. First operand has 42 places, 26 transitions, 100 flow. Second operand 4 states and 443 transitions. [2021-04-29 00:52:54,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 29 transitions, 142 flow [2021-04-29 00:52:54,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 110 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-04-29 00:52:54,718 INFO L241 Difference]: Finished difference. Result has 40 places, 23 transitions, 80 flow [2021-04-29 00:52:54,719 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2021-04-29 00:52:54,719 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -40 predicate places. [2021-04-29 00:52:54,719 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:52:54,720 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 23 transitions, 80 flow [2021-04-29 00:52:54,720 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 23 transitions, 80 flow [2021-04-29 00:52:54,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 23 transitions, 80 flow [2021-04-29 00:52:54,725 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-04-29 00:52:54,726 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-04-29 00:52:54,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 23 events. 0/23 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 00:52:54,727 INFO L146 LiptonReduction]: Number of co-enabled transitions 200 [2021-04-29 00:52:54,830 INFO L158 LiptonReduction]: Checked pairs total: 126 [2021-04-29 00:52:54,831 INFO L160 LiptonReduction]: Total number of compositions: 3 [2021-04-29 00:52:54,831 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 112 [2021-04-29 00:52:54,834 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 80 flow [2021-04-29 00:52:54,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,835 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:52:54,835 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:52:54,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 00:52:54,836 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:52:54,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:52:54,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1387597696, now seen corresponding path program 1 times [2021-04-29 00:52:54,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:52:54,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927149650] [2021-04-29 00:52:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:52:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:52:54,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:52:54,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:52:54,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:52:54,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:52:54,965 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:52:54,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:52:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:52:54,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927149650] [2021-04-29 00:52:54,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:52:54,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:52:54,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308887761] [2021-04-29 00:52:54,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:52:54,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:52:54,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:52:54,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:52:54,981 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 170 [2021-04-29 00:52:54,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:54,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:52:54,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 170 [2021-04-29 00:52:54,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:52:55,017 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-04-29 00:52:55,018 INFO L130 PetriNetUnfolder]: For 52/53 co-relation queries the response was YES. [2021-04-29 00:52:55,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 22 events. 0/22 cut-off events. For 52/53 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 0 based on Foata normal form. 5/20 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-04-29 00:52:55,019 INFO L132 encePairwiseOnDemand]: 164/170 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-04-29 00:52:55,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 22 transitions, 86 flow [2021-04-29 00:52:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:52:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:52:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2021-04-29 00:52:55,023 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2021-04-29 00:52:55,024 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 430 transitions. [2021-04-29 00:52:55,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 430 transitions. [2021-04-29 00:52:55,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:52:55,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 430 transitions. [2021-04-29 00:52:55,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:55,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:55,032 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 170.0) internal successors, (850), 5 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:55,032 INFO L185 Difference]: Start difference. First operand has 39 places, 23 transitions, 80 flow. Second operand 4 states and 430 transitions. [2021-04-29 00:52:55,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 22 transitions, 86 flow [2021-04-29 00:52:55,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 22 transitions, 70 flow, removed 1 selfloop flow, removed 7 redundant places. [2021-04-29 00:52:55,036 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2021-04-29 00:52:55,037 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2021-04-29 00:52:55,037 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -46 predicate places. [2021-04-29 00:52:55,037 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:52:55,038 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 0 transitions, 0 flow [2021-04-29 00:52:55,038 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 0 transitions, 0 flow [2021-04-29 00:52:55,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 00:52:55,039 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 00:52:55,039 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:52:55,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 00:52:55,040 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 00:52:55,040 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:52:55,040 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:52:55,041 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-04-29 00:52:55,045 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 00:52:55,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:52:55,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 00:52:55,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 12:52:55 BasicIcfg [2021-04-29 00:52:55,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 00:52:55,058 INFO L168 Benchmark]: Toolchain (without parser) took 15385.30 ms. Allocated memory was 302.0 MB in the beginning and 474.0 MB in the end (delta: 172.0 MB). Free memory was 275.9 MB in the beginning and 215.7 MB in the end (delta: 60.1 MB). Peak memory consumption was 233.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:52:55,063 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:52:55,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 958.57 ms. Allocated memory is still 302.0 MB. Free memory was 272.7 MB in the beginning and 271.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.0 GB. [2021-04-29 00:52:55,072 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.50 ms. Allocated memory is still 302.0 MB. Free memory was 271.3 MB in the beginning and 269.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:52:55,076 INFO L168 Benchmark]: Boogie Preprocessor took 38.75 ms. Allocated memory is still 302.0 MB. Free memory was 269.2 MB in the beginning and 267.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:52:55,077 INFO L168 Benchmark]: RCFGBuilder took 781.75 ms. Allocated memory is still 302.0 MB. Free memory was 267.8 MB in the beginning and 244.1 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:52:55,083 INFO L168 Benchmark]: TraceAbstraction took 13473.94 ms. Allocated memory was 302.0 MB in the beginning and 474.0 MB in the end (delta: 172.0 MB). Free memory was 243.9 MB in the beginning and 215.7 MB in the end (delta: 28.2 MB). Peak memory consumption was 202.3 MB. Max. memory is 16.0 GB. [2021-04-29 00:52:55,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 958.57 ms. Allocated memory is still 302.0 MB. Free memory was 272.7 MB in the beginning and 271.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 63.50 ms. Allocated memory is still 302.0 MB. Free memory was 271.3 MB in the beginning and 269.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 38.75 ms. Allocated memory is still 302.0 MB. Free memory was 269.2 MB in the beginning and 267.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 781.75 ms. Allocated memory is still 302.0 MB. Free memory was 267.8 MB in the beginning and 244.1 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 13473.94 ms. Allocated memory was 302.0 MB in the beginning and 474.0 MB in the end (delta: 172.0 MB). Free memory was 243.9 MB in the beginning and 215.7 MB in the end (delta: 28.2 MB). Peak memory consumption was 202.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11195.2ms, 70 PlacesBefore, 80 PlacesAfterwards, 61 TransitionsBefore, 70 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 48 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 5406 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2394, positive: 2234, positive conditional: 2234, positive unconditional: 0, negative: 160, negative conditional: 160, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 952, positive: 912, positive conditional: 0, positive unconditional: 912, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 952, positive: 912, positive conditional: 0, positive unconditional: 912, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 952, positive: 890, positive conditional: 0, positive unconditional: 890, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 62, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 390, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 246, negative conditional: 0, negative unconditional: 246, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2394, positive: 1322, positive conditional: 1322, positive unconditional: 0, negative: 120, negative conditional: 120, negative unconditional: 0, unknown: 952, unknown conditional: 952, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 935, Positive cache size: 895, Positive conditional cache size: 895, Positive unconditional cache size: 0, Negative cache size: 40, Negative conditional cache size: 40, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.3ms, 80 PlacesBefore, 35 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 330 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 357 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 128, positive: 105, positive conditional: 105, positive unconditional: 0, negative: 23, negative conditional: 23, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 2, positive unconditional: 15, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 2, positive unconditional: 15, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 2, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 16, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 16, negative conditional: 10, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 128, positive: 88, positive conditional: 88, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 20, unknown conditional: 20, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 955, Positive cache size: 912, Positive conditional cache size: 912, Positive unconditional cache size: 0, Negative cache size: 43, Negative conditional cache size: 43, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.2ms, 40 PlacesBefore, 40 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 406 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 250 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 33, positive conditional: 33, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 9, negative conditional: 5, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 46, positive: 32, positive conditional: 32, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 958, Positive cache size: 913, Positive conditional cache size: 913, Positive unconditional cache size: 0, Negative cache size: 45, Negative conditional cache size: 45, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.5ms, 44 PlacesBefore, 42 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 284 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 180 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 64, positive: 51, positive conditional: 51, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 64, positive: 47, positive conditional: 47, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 963, Positive cache size: 917, Positive conditional cache size: 917, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 111.1ms, 40 PlacesBefore, 39 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 200 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 126 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48, positive: 40, positive conditional: 40, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 4, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 4, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 13, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 48, positive: 27, positive conditional: 27, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 13, unknown conditional: 13, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 976, Positive cache size: 930, Positive conditional cache size: 930, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1ms, 34 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 976, Positive cache size: 930, Positive conditional cache size: 930, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 35.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 13153.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 499.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11387.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 46 SDtfs, 31 SDslu, 10 SDs, 0 SdLazy, 44 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.3ms SsaConstructionTime, 197.3ms SatisfiabilityAnalysisTime, 526.0ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...