/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:45:17,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:45:17,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:45:17,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:45:17,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:45:17,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:45:17,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:45:17,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:45:17,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:45:17,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:45:17,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:45:17,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:45:17,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:45:17,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:45:17,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:45:17,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:45:17,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:45:17,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:45:17,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:45:17,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:45:17,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:45:17,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:45:17,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:45:17,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:45:17,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:45:17,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:45:17,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:45:17,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:45:17,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:45:17,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:45:17,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:45:17,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:45:17,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:45:17,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:45:17,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:45:17,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:45:17,807 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-SemanticLbe.epf [2020-10-16 01:45:17,849 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:45:17,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:45:17,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:45:17,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:45:17,852 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:45:17,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:45:17,853 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:45:17,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:45:17,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:45:17,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:45:17,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:45:17,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:45:17,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:45:17,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:45:17,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:45:17,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:45:17,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:45:17,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:45:17,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:45:17,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:45:17,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:45:17,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:45:17,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:45:17,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:45:17,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:45:17,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:45:17,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:45:17,858 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:45:17,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:45:18,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:45:18,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:45:18,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:45:18,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:45:18,197 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:45:18,198 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2020-10-16 01:45:18,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2088edd8/d161ec24c59641018d74573496039114/FLAG6d3774b9a [2020-10-16 01:45:18,796 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:45:18,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2020-10-16 01:45:18,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2088edd8/d161ec24c59641018d74573496039114/FLAG6d3774b9a [2020-10-16 01:45:19,053 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2088edd8/d161ec24c59641018d74573496039114 [2020-10-16 01:45:19,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:45:19,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:45:19,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:45:19,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:45:19,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:45:19,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@167a53e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19, skipping insertion in model container [2020-10-16 01:45:19,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:45:19,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:45:19,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:45:19,607 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:45:19,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:45:19,742 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:45:19,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19 WrapperNode [2020-10-16 01:45:19,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:45:19,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:45:19,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:45:19,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:45:19,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:45:19,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:45:19,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:45:19,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:45:19,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... [2020-10-16 01:45:19,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:45:19,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:45:19,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:45:19,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:45:19,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:45:19,879 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:45:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:45:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:45:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:45:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:45:19,880 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:45:19,880 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:45:19,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:45:19,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:45:19,882 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:45:20,166 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:45:20,166 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:45:20,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:45:20 BoogieIcfgContainer [2020-10-16 01:45:20,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:45:20,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:45:20,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:45:20,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:45:20,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:45:19" (1/3) ... [2020-10-16 01:45:20,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81a6316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:45:20, skipping insertion in model container [2020-10-16 01:45:20,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:45:19" (2/3) ... [2020-10-16 01:45:20,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81a6316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:45:20, skipping insertion in model container [2020-10-16 01:45:20,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:45:20" (3/3) ... [2020-10-16 01:45:20,178 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2020-10-16 01:45:20,207 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:45:20,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:45:20,225 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:45:20,280 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,281 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,281 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,281 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,282 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,283 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,283 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,283 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,284 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,287 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,287 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,288 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,288 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,288 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,289 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,289 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,296 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,297 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,311 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,311 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,317 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:45:20,332 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:45:20,348 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:45:20,348 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:45:20,348 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:45:20,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:45:20,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:45:20,348 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:45:20,349 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:45:20,349 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:45:20,360 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:45:20,398 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 01:45:20,399 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:20,404 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:45:20,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:45:20,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 54 transitions, 117 flow [2020-10-16 01:45:20,411 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:45:20,414 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:45:20,416 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:45:20,417 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions, 117 flow [2020-10-16 01:45:20,434 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-16 01:45:20,435 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:20,435 INFO L80 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:45:20,437 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:45:21,679 INFO L132 LiptonReduction]: Checked pairs total: 1646 [2020-10-16 01:45:21,679 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 01:45:21,682 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1273 [2020-10-16 01:45:21,689 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2020-10-16 01:45:21,690 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:21,690 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:21,691 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:21,691 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:21,697 INFO L82 PathProgramCache]: Analyzing trace with hash -500303693, now seen corresponding path program 1 times [2020-10-16 01:45:21,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:21,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989122371] [2020-10-16 01:45:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:21,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989122371] [2020-10-16 01:45:21,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:21,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:45:21,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158400506] [2020-10-16 01:45:21,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 01:45:21,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:21,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 01:45:21,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 01:45:21,896 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 109 [2020-10-16 01:45:21,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states. [2020-10-16 01:45:21,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:21,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 109 [2020-10-16 01:45:21,899 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:21,909 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:45:21,909 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:21,909 INFO L80 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 01:45:21,910 INFO L132 encePairwiseOnDemand]: 108/109 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2020-10-16 01:45:21,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2020-10-16 01:45:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 01:45:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 01:45:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 205 transitions. [2020-10-16 01:45:21,925 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9403669724770642 [2020-10-16 01:45:21,926 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 205 transitions. [2020-10-16 01:45:21,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 205 transitions. [2020-10-16 01:45:21,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:21,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 205 transitions. [2020-10-16 01:45:21,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 01:45:21,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 01:45:21,939 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 01:45:21,941 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 205 transitions. [2020-10-16 01:45:21,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2020-10-16 01:45:21,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:45:21,947 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2020-10-16 01:45:21,949 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2020-10-16 01:45:21,950 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2020-10-16 01:45:21,950 INFO L481 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2020-10-16 01:45:21,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 01:45:21,951 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:21,951 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:21,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:45:21,951 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:21,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1670454748, now seen corresponding path program 1 times [2020-10-16 01:45:21,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:21,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436409365] [2020-10-16 01:45:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:22,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436409365] [2020-10-16 01:45:22,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:22,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:22,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385282078] [2020-10-16 01:45:22,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:22,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:22,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:22,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:22,045 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 109 [2020-10-16 01:45:22,046 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states. [2020-10-16 01:45:22,046 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:22,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 109 [2020-10-16 01:45:22,046 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:22,078 INFO L129 PetriNetUnfolder]: 14/44 cut-off events. [2020-10-16 01:45:22,078 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:45:22,079 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 44 events. 14/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 110 event pairs, 6 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 79. Up to 29 conditions per place. [2020-10-16 01:45:22,080 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 4 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2020-10-16 01:45:22,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 62 flow [2020-10-16 01:45:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2020-10-16 01:45:22,084 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8073394495412844 [2020-10-16 01:45:22,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2020-10-16 01:45:22,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2020-10-16 01:45:22,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:22,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2020-10-16 01:45:22,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:22,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:22,089 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:22,089 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 264 transitions. [2020-10-16 01:45:22,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 62 flow [2020-10-16 01:45:22,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:45:22,091 INFO L241 Difference]: Finished difference. Result has 28 places, 20 transitions, 66 flow [2020-10-16 01:45:22,091 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2020-10-16 01:45:22,092 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:45:22,092 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 66 flow [2020-10-16 01:45:22,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:22,092 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:22,092 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:22,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:45:22,093 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:22,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1193714541, now seen corresponding path program 1 times [2020-10-16 01:45:22,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:22,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241621626] [2020-10-16 01:45:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:22,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241621626] [2020-10-16 01:45:22,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:22,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:45:22,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616592618] [2020-10-16 01:45:22,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:45:22,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:22,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:45:22,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:45:22,187 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 109 [2020-10-16 01:45:22,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 66 flow. Second operand 4 states. [2020-10-16 01:45:22,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:22,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 109 [2020-10-16 01:45:22,188 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:22,217 INFO L129 PetriNetUnfolder]: 8/35 cut-off events. [2020-10-16 01:45:22,218 INFO L130 PetriNetUnfolder]: For 7/16 co-relation queries the response was YES. [2020-10-16 01:45:22,218 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 35 events. 8/35 cut-off events. For 7/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 1 based on Foata normal form. 8/42 useless extension candidates. Maximal degree in co-relation 84. Up to 20 conditions per place. [2020-10-16 01:45:22,219 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 4 selfloop transitions, 7 changer transitions 0/23 dead transitions. [2020-10-16 01:45:22,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 100 flow [2020-10-16 01:45:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:45:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:45:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2020-10-16 01:45:22,223 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8073394495412844 [2020-10-16 01:45:22,223 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2020-10-16 01:45:22,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2020-10-16 01:45:22,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:22,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2020-10-16 01:45:22,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:45:22,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:45:22,227 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:45:22,227 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 66 flow. Second operand 4 states and 352 transitions. [2020-10-16 01:45:22,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 100 flow [2020-10-16 01:45:22,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:22,229 INFO L241 Difference]: Finished difference. Result has 31 places, 23 transitions, 102 flow [2020-10-16 01:45:22,229 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2020-10-16 01:45:22,229 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 01:45:22,230 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 102 flow [2020-10-16 01:45:22,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:45:22,230 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:22,230 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:22,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:45:22,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:22,231 INFO L82 PathProgramCache]: Analyzing trace with hash 816058795, now seen corresponding path program 1 times [2020-10-16 01:45:22,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:22,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246650362] [2020-10-16 01:45:22,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:22,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246650362] [2020-10-16 01:45:22,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:22,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:22,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582518641] [2020-10-16 01:45:22,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:22,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:22,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:22,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:22,283 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 01:45:22,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 102 flow. Second operand 3 states. [2020-10-16 01:45:22,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:22,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 01:45:22,284 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:22,309 INFO L129 PetriNetUnfolder]: 16/59 cut-off events. [2020-10-16 01:45:22,310 INFO L130 PetriNetUnfolder]: For 22/36 co-relation queries the response was YES. [2020-10-16 01:45:22,311 INFO L80 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 59 events. 16/59 cut-off events. For 22/36 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 170 event pairs, 2 based on Foata normal form. 8/66 useless extension candidates. Maximal degree in co-relation 166. Up to 39 conditions per place. [2020-10-16 01:45:22,311 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 3 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2020-10-16 01:45:22,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 114 flow [2020-10-16 01:45:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:22,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:45:22,314 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8532110091743119 [2020-10-16 01:45:22,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:45:22,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:45:22,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:22,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:45:22,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:22,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:22,317 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:22,317 INFO L185 Difference]: Start difference. First operand has 31 places, 23 transitions, 102 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:45:22,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 114 flow [2020-10-16 01:45:22,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 100 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-16 01:45:22,319 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 100 flow [2020-10-16 01:45:22,320 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2020-10-16 01:45:22,320 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 01:45:22,320 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 100 flow [2020-10-16 01:45:22,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:22,321 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:22,321 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:22,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:45:22,321 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:22,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:22,322 INFO L82 PathProgramCache]: Analyzing trace with hash -398965966, now seen corresponding path program 1 times [2020-10-16 01:45:22,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:22,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833670891] [2020-10-16 01:45:22,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:22,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833670891] [2020-10-16 01:45:22,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:22,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:22,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812610941] [2020-10-16 01:45:22,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:22,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:22,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:22,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:22,368 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 01:45:22,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 100 flow. Second operand 3 states. [2020-10-16 01:45:22,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:22,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 01:45:22,369 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:22,402 INFO L129 PetriNetUnfolder]: 32/104 cut-off events. [2020-10-16 01:45:22,402 INFO L130 PetriNetUnfolder]: For 51/66 co-relation queries the response was YES. [2020-10-16 01:45:22,403 INFO L80 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 104 events. 32/104 cut-off events. For 51/66 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 428 event pairs, 4 based on Foata normal form. 10/108 useless extension candidates. Maximal degree in co-relation 265. Up to 67 conditions per place. [2020-10-16 01:45:22,404 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 3 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2020-10-16 01:45:22,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 112 flow [2020-10-16 01:45:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:45:22,420 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8532110091743119 [2020-10-16 01:45:22,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:45:22,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:45:22,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:22,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:45:22,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:22,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:22,423 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:22,423 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 100 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:45:22,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 112 flow [2020-10-16 01:45:22,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:22,425 INFO L241 Difference]: Finished difference. Result has 34 places, 25 transitions, 110 flow [2020-10-16 01:45:22,425 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2020-10-16 01:45:22,426 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:45:22,426 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 110 flow [2020-10-16 01:45:22,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:22,426 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:22,426 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:22,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:45:22,427 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:22,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:22,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1744545413, now seen corresponding path program 1 times [2020-10-16 01:45:22,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:22,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573166136] [2020-10-16 01:45:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:22,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573166136] [2020-10-16 01:45:22,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:22,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:45:22,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114772757] [2020-10-16 01:45:22,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:45:22,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:22,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:45:22,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:45:22,472 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2020-10-16 01:45:22,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 110 flow. Second operand 3 states. [2020-10-16 01:45:22,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:22,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2020-10-16 01:45:22,473 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:22,511 INFO L129 PetriNetUnfolder]: 56/166 cut-off events. [2020-10-16 01:45:22,511 INFO L130 PetriNetUnfolder]: For 96/119 co-relation queries the response was YES. [2020-10-16 01:45:22,513 INFO L80 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 166 events. 56/166 cut-off events. For 96/119 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 839 event pairs, 7 based on Foata normal form. 17/170 useless extension candidates. Maximal degree in co-relation 430. Up to 116 conditions per place. [2020-10-16 01:45:22,513 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 3 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2020-10-16 01:45:22,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 122 flow [2020-10-16 01:45:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:45:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:45:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2020-10-16 01:45:22,515 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8532110091743119 [2020-10-16 01:45:22,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2020-10-16 01:45:22,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2020-10-16 01:45:22,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:22,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2020-10-16 01:45:22,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:45:22,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:45:22,518 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:45:22,518 INFO L185 Difference]: Start difference. First operand has 34 places, 25 transitions, 110 flow. Second operand 3 states and 279 transitions. [2020-10-16 01:45:22,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 122 flow [2020-10-16 01:45:22,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:22,520 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 120 flow [2020-10-16 01:45:22,520 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2020-10-16 01:45:22,521 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2020-10-16 01:45:22,521 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 120 flow [2020-10-16 01:45:22,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:45:22,521 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:45:22,521 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:45:22,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:45:22,522 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:45:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:45:22,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1643370772, now seen corresponding path program 1 times [2020-10-16 01:45:22,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:45:22,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089474770] [2020-10-16 01:45:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:45:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:45:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:45:22,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089474770] [2020-10-16 01:45:22,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:45:22,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:45:22,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508911296] [2020-10-16 01:45:22,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:45:22,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:45:22,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:45:22,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:45:22,565 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 109 [2020-10-16 01:45:22,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 120 flow. Second operand 5 states. [2020-10-16 01:45:22,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:45:22,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 109 [2020-10-16 01:45:22,566 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:45:22,610 INFO L129 PetriNetUnfolder]: 35/115 cut-off events. [2020-10-16 01:45:22,610 INFO L130 PetriNetUnfolder]: For 131/255 co-relation queries the response was YES. [2020-10-16 01:45:22,611 INFO L80 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 115 events. 35/115 cut-off events. For 131/255 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 521 event pairs, 0 based on Foata normal form. 73/175 useless extension candidates. Maximal degree in co-relation 362. Up to 71 conditions per place. [2020-10-16 01:45:22,611 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2020-10-16 01:45:22,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 25 transitions, 134 flow [2020-10-16 01:45:22,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:45:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:45:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2020-10-16 01:45:22,614 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8018348623853211 [2020-10-16 01:45:22,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2020-10-16 01:45:22,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2020-10-16 01:45:22,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:45:22,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2020-10-16 01:45:22,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:45:22,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:45:22,617 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:45:22,617 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 120 flow. Second operand 5 states and 437 transitions. [2020-10-16 01:45:22,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 25 transitions, 134 flow [2020-10-16 01:45:22,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 25 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:45:22,619 INFO L241 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2020-10-16 01:45:22,619 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2020-10-16 01:45:22,619 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:45:22,620 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2020-10-16 01:45:22,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:45:22,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:45:22,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:45:22 BasicIcfg [2020-10-16 01:45:22,624 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:45:22,626 INFO L168 Benchmark]: Toolchain (without parser) took 3561.50 ms. Allocated memory was 251.7 MB in the beginning and 369.1 MB in the end (delta: 117.4 MB). Free memory was 207.4 MB in the beginning and 301.8 MB in the end (delta: -94.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:22,627 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 251.7 MB. Free memory was 229.7 MB in the beginning and 228.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-16 01:45:22,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.99 ms. Allocated memory was 251.7 MB in the beginning and 314.0 MB in the end (delta: 62.4 MB). Free memory was 207.4 MB in the beginning and 268.6 MB in the end (delta: -61.3 MB). Peak memory consumption was 32.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:22,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.08 ms. Allocated memory is still 314.0 MB. Free memory was 268.6 MB in the beginning and 266.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:22,630 INFO L168 Benchmark]: Boogie Preprocessor took 25.59 ms. Allocated memory is still 314.0 MB. Free memory was 266.8 MB in the beginning and 265.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:22,631 INFO L168 Benchmark]: RCFGBuilder took 352.88 ms. Allocated memory is still 314.0 MB. Free memory was 265.1 MB in the beginning and 243.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-16 01:45:22,631 INFO L168 Benchmark]: TraceAbstraction took 2454.09 ms. Allocated memory was 314.0 MB in the beginning and 369.1 MB in the end (delta: 55.1 MB). Free memory was 242.2 MB in the beginning and 301.8 MB in the end (delta: -59.5 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:45:22,635 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 251.7 MB. Free memory was 229.7 MB in the beginning and 228.9 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 676.99 ms. Allocated memory was 251.7 MB in the beginning and 314.0 MB in the end (delta: 62.4 MB). Free memory was 207.4 MB in the beginning and 268.6 MB in the end (delta: -61.3 MB). Peak memory consumption was 32.4 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.08 ms. Allocated memory is still 314.0 MB. Free memory was 268.6 MB in the beginning and 266.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.59 ms. Allocated memory is still 314.0 MB. Free memory was 266.8 MB in the beginning and 265.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 352.88 ms. Allocated memory is still 314.0 MB. Free memory was 265.1 MB in the beginning and 243.1 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2454.09 ms. Allocated memory was 314.0 MB in the beginning and 369.1 MB in the end (delta: 55.1 MB). Free memory was 242.2 MB in the beginning and 301.8 MB in the end (delta: -59.5 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 609 VarBasedMoverChecksPositive, 54 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 88 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 63 PlacesBefore, 27 PlacesAfterwards, 54 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 41 TotalNumberOfCompositions, 1646 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 45 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 1984 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...