/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:31:54,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:31:54,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:31:54,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:31:54,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:31:54,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:31:54,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:31:54,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:31:54,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:31:54,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:31:54,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:31:54,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:31:54,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:31:54,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:31:54,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:31:54,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:31:54,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:31:54,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:31:54,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:31:54,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:31:54,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:31:54,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:31:54,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:31:54,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:31:54,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:31:54,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:31:54,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:31:54,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:31:54,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:31:54,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:31:54,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:31:54,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:31:54,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:31:54,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:31:54,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:31:54,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:31:54,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:31:54,823 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:31:54,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:31:54,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:31:54,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:31:54,826 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:31:54,868 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:31:54,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:31:54,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:31:54,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:31:54,871 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:31:54,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:31:54,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:31:54,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:31:54,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:31:54,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:31:54,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:31:54,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:31:54,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:31:54,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:31:54,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:31:54,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:31:54,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:31:54,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:31:54,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:31:54,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:31:54,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:31:54,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:31:54,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:31:54,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:31:54,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:31:54,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:31:54,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:31:54,877 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:31:54,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:31:54,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:31:55,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:31:55,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:31:55,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:31:55,195 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:31:55,197 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:31:55,198 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-11 18:31:55,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719174143/146390f8d0474c7dbf75d6ae4215222c/FLAG00916208a [2020-10-11 18:31:55,782 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:31:55,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-11 18:31:55,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719174143/146390f8d0474c7dbf75d6ae4215222c/FLAG00916208a [2020-10-11 18:31:56,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719174143/146390f8d0474c7dbf75d6ae4215222c [2020-10-11 18:31:56,135 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:31:56,137 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:31:56,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:31:56,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:31:56,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:31:56,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a54700b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56, skipping insertion in model container [2020-10-11 18:31:56,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:31:56,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:31:56,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:31:56,723 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:31:56,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:31:56,839 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:31:56,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56 WrapperNode [2020-10-11 18:31:56,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:31:56,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:31:56,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:31:56,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:31:56,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:31:56,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:31:56,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:31:56,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:31:56,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... [2020-10-11 18:31:56,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:31:56,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:31:56,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:31:56,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:31:56,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:31:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:31:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:31:56,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:31:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:31:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:31:56,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:31:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:31:56,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:31:56,980 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:31:56,981 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:31:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:31:56,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:31:56,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:31:56,983 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:31:57,343 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:31:57,343 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:31:57,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:31:57 BoogieIcfgContainer [2020-10-11 18:31:57,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:31:57,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:31:57,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:31:57,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:31:57,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:31:56" (1/3) ... [2020-10-11 18:31:57,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220adf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:31:57, skipping insertion in model container [2020-10-11 18:31:57,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:31:56" (2/3) ... [2020-10-11 18:31:57,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@220adf7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:31:57, skipping insertion in model container [2020-10-11 18:31:57,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:31:57" (3/3) ... [2020-10-11 18:31:57,354 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-10-11 18:31:57,364 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:31:57,371 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:31:57,372 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:31:57,399 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,399 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,400 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,400 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,401 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,402 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,402 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,402 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,404 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,409 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,409 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,418 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,419 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,421 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:31:57,441 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:31:57,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:31:57,461 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:31:57,461 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:31:57,461 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:31:57,461 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:31:57,462 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:31:57,462 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:31:57,462 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:31:57,475 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:31:57,517 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-11 18:31:57,517 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:31:57,522 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 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. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-11 18:31:57,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-11 18:31:57,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-11 18:31:57,547 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-11 18:31:57,547 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:31:57,548 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:57,549 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:57,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:57,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:57,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1862511890, now seen corresponding path program 1 times [2020-10-11 18:31:57,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:57,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534227067] [2020-10-11 18:31:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:57,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534227067] [2020-10-11 18:31:57,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:57,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:31:57,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127589667] [2020-10-11 18:31:58,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:31:58,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:58,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:31:58,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:31:58,259 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-11 18:31:58,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 119 flow. Second operand 6 states. [2020-10-11 18:31:58,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:58,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-11 18:31:58,264 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:58,429 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2020-10-11 18:31:58,430 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:31:58,430 INFO L80 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 69 events. 3/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 4/72 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2020-10-11 18:31:58,432 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 6 selfloop transitions, 2 changer transitions 11/64 dead transitions. [2020-10-11 18:31:58,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 173 flow [2020-10-11 18:31:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:31:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:31:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 553 transitions. [2020-10-11 18:31:58,452 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8904991948470209 [2020-10-11 18:31:58,453 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 553 transitions. [2020-10-11 18:31:58,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 553 transitions. [2020-10-11 18:31:58,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:58,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 553 transitions. [2020-10-11 18:31:58,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:31:58,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:31:58,474 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:31:58,477 INFO L185 Difference]: Start difference. First operand has 64 places, 55 transitions, 119 flow. Second operand 9 states and 553 transitions. [2020-10-11 18:31:58,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 173 flow [2020-10-11 18:31:58,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:31:58,487 INFO L241 Difference]: Finished difference. Result has 76 places, 53 transitions, 132 flow [2020-10-11 18:31:58,490 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=132, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2020-10-11 18:31:58,491 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2020-10-11 18:31:58,491 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 132 flow [2020-10-11 18:31:58,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:31:58,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:58,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:58,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:31:58,493 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:58,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:58,493 INFO L82 PathProgramCache]: Analyzing trace with hash 982104275, now seen corresponding path program 1 times [2020-10-11 18:31:58,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:58,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361655817] [2020-10-11 18:31:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:58,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361655817] [2020-10-11 18:31:58,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:58,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:58,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934791448] [2020-10-11 18:31:58,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:58,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:58,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:58,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:59,011 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:31:59,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 132 flow. Second operand 7 states. [2020-10-11 18:31:59,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:59,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:31:59,012 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:59,179 INFO L129 PetriNetUnfolder]: 22/113 cut-off events. [2020-10-11 18:31:59,180 INFO L130 PetriNetUnfolder]: For 31/41 co-relation queries the response was YES. [2020-10-11 18:31:59,181 INFO L80 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 113 events. 22/113 cut-off events. For 31/41 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 5 based on Foata normal form. 4/114 useless extension candidates. Maximal degree in co-relation 204. Up to 18 conditions per place. [2020-10-11 18:31:59,182 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 7 selfloop transitions, 4 changer transitions 24/77 dead transitions. [2020-10-11 18:31:59,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 273 flow [2020-10-11 18:31:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:31:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:31:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 597 transitions. [2020-10-11 18:31:59,186 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8652173913043478 [2020-10-11 18:31:59,186 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 597 transitions. [2020-10-11 18:31:59,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 597 transitions. [2020-10-11 18:31:59,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:59,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 597 transitions. [2020-10-11 18:31:59,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:31:59,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:31:59,191 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:31:59,191 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 132 flow. Second operand 10 states and 597 transitions. [2020-10-11 18:31:59,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 273 flow [2020-10-11 18:31:59,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 239 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-11 18:31:59,196 INFO L241 Difference]: Finished difference. Result has 78 places, 53 transitions, 154 flow [2020-10-11 18:31:59,197 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2020-10-11 18:31:59,197 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2020-10-11 18:31:59,197 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 154 flow [2020-10-11 18:31:59,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:31:59,198 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:59,198 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:59,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:31:59,198 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:59,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:59,199 INFO L82 PathProgramCache]: Analyzing trace with hash 673248322, now seen corresponding path program 1 times [2020-10-11 18:31:59,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:59,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184217466] [2020-10-11 18:31:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:59,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184217466] [2020-10-11 18:31:59,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:59,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:31:59,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733530302] [2020-10-11 18:31:59,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:31:59,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:59,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:31:59,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:31:59,448 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 69 [2020-10-11 18:31:59,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 154 flow. Second operand 6 states. [2020-10-11 18:31:59,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:59,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 69 [2020-10-11 18:31:59,449 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:31:59,618 INFO L129 PetriNetUnfolder]: 15/109 cut-off events. [2020-10-11 18:31:59,618 INFO L130 PetriNetUnfolder]: For 124/128 co-relation queries the response was YES. [2020-10-11 18:31:59,620 INFO L80 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 109 events. 15/109 cut-off events. For 124/128 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 292 event pairs, 9 based on Foata normal form. 4/109 useless extension candidates. Maximal degree in co-relation 224. Up to 18 conditions per place. [2020-10-11 18:31:59,621 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 6 selfloop transitions, 2 changer transitions 10/63 dead transitions. [2020-10-11 18:31:59,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 63 transitions, 232 flow [2020-10-11 18:31:59,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:31:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:31:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 551 transitions. [2020-10-11 18:31:59,627 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8872785829307569 [2020-10-11 18:31:59,627 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 551 transitions. [2020-10-11 18:31:59,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 551 transitions. [2020-10-11 18:31:59,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:31:59,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 551 transitions. [2020-10-11 18:31:59,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:31:59,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:31:59,632 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:31:59,632 INFO L185 Difference]: Start difference. First operand has 78 places, 53 transitions, 154 flow. Second operand 9 states and 551 transitions. [2020-10-11 18:31:59,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 63 transitions, 232 flow [2020-10-11 18:31:59,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 206 flow, removed 9 selfloop flow, removed 6 redundant places. [2020-10-11 18:31:59,659 INFO L241 Difference]: Finished difference. Result has 81 places, 53 transitions, 158 flow [2020-10-11 18:31:59,660 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=158, PETRI_PLACES=81, PETRI_TRANSITIONS=53} [2020-10-11 18:31:59,660 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2020-10-11 18:31:59,660 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 53 transitions, 158 flow [2020-10-11 18:31:59,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:31:59,660 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:31:59,661 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:31:59,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:31:59,662 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:31:59,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:31:59,663 INFO L82 PathProgramCache]: Analyzing trace with hash 530974865, now seen corresponding path program 1 times [2020-10-11 18:31:59,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:31:59,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736407427] [2020-10-11 18:31:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:31:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:31:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:31:59,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736407427] [2020-10-11 18:31:59,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:31:59,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:31:59,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317613463] [2020-10-11 18:31:59,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:31:59,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:31:59,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:31:59,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:31:59,968 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:31:59,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 53 transitions, 158 flow. Second operand 7 states. [2020-10-11 18:31:59,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:31:59,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:31:59,970 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:00,251 INFO L129 PetriNetUnfolder]: 8/105 cut-off events. [2020-10-11 18:32:00,251 INFO L130 PetriNetUnfolder]: For 163/184 co-relation queries the response was YES. [2020-10-11 18:32:00,253 INFO L80 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 105 events. 8/105 cut-off events. For 163/184 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 283 event pairs, 1 based on Foata normal form. 6/109 useless extension candidates. Maximal degree in co-relation 247. Up to 18 conditions per place. [2020-10-11 18:32:00,253 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 9 selfloop transitions, 2 changer transitions 23/76 dead transitions. [2020-10-11 18:32:00,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 76 transitions, 397 flow [2020-10-11 18:32:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 18:32:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-11 18:32:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 990 transitions. [2020-10-11 18:32:00,258 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8439897698209718 [2020-10-11 18:32:00,258 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 990 transitions. [2020-10-11 18:32:00,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 990 transitions. [2020-10-11 18:32:00,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:00,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 990 transitions. [2020-10-11 18:32:00,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 18 states. [2020-10-11 18:32:00,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 18 states. [2020-10-11 18:32:00,264 INFO L81 ComplementDD]: Finished complementDD. Result 18 states. [2020-10-11 18:32:00,265 INFO L185 Difference]: Start difference. First operand has 81 places, 53 transitions, 158 flow. Second operand 17 states and 990 transitions. [2020-10-11 18:32:00,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 76 transitions, 397 flow [2020-10-11 18:32:00,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 331 flow, removed 30 selfloop flow, removed 8 redundant places. [2020-10-11 18:32:00,269 INFO L241 Difference]: Finished difference. Result has 98 places, 53 transitions, 178 flow [2020-10-11 18:32:00,270 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=178, PETRI_PLACES=98, PETRI_TRANSITIONS=53} [2020-10-11 18:32:00,270 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 34 predicate places. [2020-10-11 18:32:00,270 INFO L481 AbstractCegarLoop]: Abstraction has has 98 places, 53 transitions, 178 flow [2020-10-11 18:32:00,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:32:00,270 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:00,271 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:00,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:32:00,271 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:00,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:00,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1007244301, now seen corresponding path program 1 times [2020-10-11 18:32:00,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:00,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450592010] [2020-10-11 18:32:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:00,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450592010] [2020-10-11 18:32:00,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:00,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:32:00,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961426201] [2020-10-11 18:32:00,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:32:00,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:00,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:32:00,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:32:00,486 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:32:00,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 53 transitions, 178 flow. Second operand 6 states. [2020-10-11 18:32:00,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:00,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:32:00,487 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:00,693 INFO L129 PetriNetUnfolder]: 116/345 cut-off events. [2020-10-11 18:32:00,693 INFO L130 PetriNetUnfolder]: For 346/352 co-relation queries the response was YES. [2020-10-11 18:32:00,698 INFO L80 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 345 events. 116/345 cut-off events. For 346/352 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1852 event pairs, 3 based on Foata normal form. 12/339 useless extension candidates. Maximal degree in co-relation 722. Up to 106 conditions per place. [2020-10-11 18:32:00,701 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 17 selfloop transitions, 14 changer transitions 4/78 dead transitions. [2020-10-11 18:32:00,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 78 transitions, 298 flow [2020-10-11 18:32:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:32:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:32:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 541 transitions. [2020-10-11 18:32:00,704 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8711755233494364 [2020-10-11 18:32:00,704 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 541 transitions. [2020-10-11 18:32:00,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 541 transitions. [2020-10-11 18:32:00,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:00,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 541 transitions. [2020-10-11 18:32:00,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:32:00,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:32:00,708 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:32:00,708 INFO L185 Difference]: Start difference. First operand has 98 places, 53 transitions, 178 flow. Second operand 9 states and 541 transitions. [2020-10-11 18:32:00,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 78 transitions, 298 flow [2020-10-11 18:32:00,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 254 flow, removed 20 selfloop flow, removed 19 redundant places. [2020-10-11 18:32:00,719 INFO L241 Difference]: Finished difference. Result has 78 places, 65 transitions, 234 flow [2020-10-11 18:32:00,720 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=234, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2020-10-11 18:32:00,720 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2020-10-11 18:32:00,720 INFO L481 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 234 flow [2020-10-11 18:32:00,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:32:00,720 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:00,721 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:00,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:32:00,721 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:00,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:00,722 INFO L82 PathProgramCache]: Analyzing trace with hash 91889612, now seen corresponding path program 1 times [2020-10-11 18:32:00,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:00,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766435888] [2020-10-11 18:32:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:00,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766435888] [2020-10-11 18:32:00,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:00,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:32:00,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983820506] [2020-10-11 18:32:00,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:32:00,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:00,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:32:00,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:32:01,072 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:32:01,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 234 flow. Second operand 7 states. [2020-10-11 18:32:01,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:01,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:32:01,074 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:01,307 INFO L129 PetriNetUnfolder]: 112/358 cut-off events. [2020-10-11 18:32:01,308 INFO L130 PetriNetUnfolder]: For 691/922 co-relation queries the response was YES. [2020-10-11 18:32:01,310 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 358 events. 112/358 cut-off events. For 691/922 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2043 event pairs, 1 based on Foata normal form. 38/378 useless extension candidates. Maximal degree in co-relation 1086. Up to 126 conditions per place. [2020-10-11 18:32:01,312 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 15 selfloop transitions, 27 changer transitions 8/93 dead transitions. [2020-10-11 18:32:01,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 515 flow [2020-10-11 18:32:01,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-11 18:32:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-11 18:32:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 720 transitions. [2020-10-11 18:32:01,316 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2020-10-11 18:32:01,316 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 720 transitions. [2020-10-11 18:32:01,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 720 transitions. [2020-10-11 18:32:01,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:01,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 720 transitions. [2020-10-11 18:32:01,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-11 18:32:01,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-11 18:32:01,322 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-11 18:32:01,323 INFO L185 Difference]: Start difference. First operand has 78 places, 65 transitions, 234 flow. Second operand 12 states and 720 transitions. [2020-10-11 18:32:01,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 515 flow [2020-10-11 18:32:01,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 509 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-11 18:32:01,330 INFO L241 Difference]: Finished difference. Result has 92 places, 81 transitions, 441 flow [2020-10-11 18:32:01,330 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=441, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2020-10-11 18:32:01,331 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 28 predicate places. [2020-10-11 18:32:01,331 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 441 flow [2020-10-11 18:32:01,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:32:01,331 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:01,332 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:01,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:32:01,332 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1847811917, now seen corresponding path program 1 times [2020-10-11 18:32:01,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:01,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791540714] [2020-10-11 18:32:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:01,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791540714] [2020-10-11 18:32:01,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:01,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:32:01,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476340817] [2020-10-11 18:32:01,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:32:01,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:01,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:32:01,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:32:01,670 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:32:01,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 441 flow. Second operand 8 states. [2020-10-11 18:32:01,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:01,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:32:01,671 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:01,981 INFO L129 PetriNetUnfolder]: 84/316 cut-off events. [2020-10-11 18:32:01,981 INFO L130 PetriNetUnfolder]: For 1327/1797 co-relation queries the response was YES. [2020-10-11 18:32:01,983 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 316 events. 84/316 cut-off events. For 1327/1797 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1832 event pairs, 1 based on Foata normal form. 49/347 useless extension candidates. Maximal degree in co-relation 1210. Up to 99 conditions per place. [2020-10-11 18:32:01,985 INFO L132 encePairwiseOnDemand]: 60/69 looper letters, 10 selfloop transitions, 32 changer transitions 15/100 dead transitions. [2020-10-11 18:32:01,985 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 693 flow [2020-10-11 18:32:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-11 18:32:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-11 18:32:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 887 transitions. [2020-10-11 18:32:01,989 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8570048309178744 [2020-10-11 18:32:01,989 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 887 transitions. [2020-10-11 18:32:01,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 887 transitions. [2020-10-11 18:32:01,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:01,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 887 transitions. [2020-10-11 18:32:01,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 16 states. [2020-10-11 18:32:01,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 16 states. [2020-10-11 18:32:01,995 INFO L81 ComplementDD]: Finished complementDD. Result 16 states. [2020-10-11 18:32:01,995 INFO L185 Difference]: Start difference. First operand has 92 places, 81 transitions, 441 flow. Second operand 15 states and 887 transitions. [2020-10-11 18:32:01,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 693 flow [2020-10-11 18:32:02,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 615 flow, removed 30 selfloop flow, removed 6 redundant places. [2020-10-11 18:32:02,006 INFO L241 Difference]: Finished difference. Result has 106 places, 82 transitions, 471 flow [2020-10-11 18:32:02,006 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=471, PETRI_PLACES=106, PETRI_TRANSITIONS=82} [2020-10-11 18:32:02,007 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 42 predicate places. [2020-10-11 18:32:02,007 INFO L481 AbstractCegarLoop]: Abstraction has has 106 places, 82 transitions, 471 flow [2020-10-11 18:32:02,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:32:02,007 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:02,007 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:02,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:32:02,008 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:02,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1835773872, now seen corresponding path program 1 times [2020-10-11 18:32:02,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:02,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916072936] [2020-10-11 18:32:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:02,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916072936] [2020-10-11 18:32:02,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:02,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:32:02,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496001322] [2020-10-11 18:32:02,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:32:02,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:02,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:32:02,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:32:02,270 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 69 [2020-10-11 18:32:02,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 82 transitions, 471 flow. Second operand 6 states. [2020-10-11 18:32:02,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:02,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 69 [2020-10-11 18:32:02,270 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:02,383 INFO L129 PetriNetUnfolder]: 86/413 cut-off events. [2020-10-11 18:32:02,384 INFO L130 PetriNetUnfolder]: For 1233/1332 co-relation queries the response was YES. [2020-10-11 18:32:02,386 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 413 events. 86/413 cut-off events. For 1233/1332 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2881 event pairs, 1 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1331. Up to 67 conditions per place. [2020-10-11 18:32:02,387 INFO L132 encePairwiseOnDemand]: 63/69 looper letters, 7 selfloop transitions, 2 changer transitions 28/87 dead transitions. [2020-10-11 18:32:02,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 87 transitions, 509 flow [2020-10-11 18:32:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 18:32:02,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 18:32:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 363 transitions. [2020-10-11 18:32:02,389 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8768115942028986 [2020-10-11 18:32:02,389 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 363 transitions. [2020-10-11 18:32:02,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 363 transitions. [2020-10-11 18:32:02,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:02,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 363 transitions. [2020-10-11 18:32:02,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 18:32:02,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 18:32:02,392 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 18:32:02,392 INFO L185 Difference]: Start difference. First operand has 106 places, 82 transitions, 471 flow. Second operand 6 states and 363 transitions. [2020-10-11 18:32:02,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 87 transitions, 509 flow [2020-10-11 18:32:02,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 87 transitions, 412 flow, removed 15 selfloop flow, removed 15 redundant places. [2020-10-11 18:32:02,406 INFO L241 Difference]: Finished difference. Result has 98 places, 59 transitions, 218 flow [2020-10-11 18:32:02,406 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=98, PETRI_TRANSITIONS=59} [2020-10-11 18:32:02,407 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 34 predicate places. [2020-10-11 18:32:02,407 INFO L481 AbstractCegarLoop]: Abstraction has has 98 places, 59 transitions, 218 flow [2020-10-11 18:32:02,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:32:02,407 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:32:02,407 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 18:32:02,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:32:02,408 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:32:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:32:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash -366618908, now seen corresponding path program 2 times [2020-10-11 18:32:02,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:32:02,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547964662] [2020-10-11 18:32:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:32:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:32:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:32:02,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547964662] [2020-10-11 18:32:02,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:32:02,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:32:02,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495029912] [2020-10-11 18:32:02,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:32:02,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:32:02,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:32:02,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:32:02,781 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 69 [2020-10-11 18:32:02,781 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 59 transitions, 218 flow. Second operand 7 states. [2020-10-11 18:32:02,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:32:02,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 69 [2020-10-11 18:32:02,782 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:32:02,869 INFO L129 PetriNetUnfolder]: 5/68 cut-off events. [2020-10-11 18:32:02,869 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2020-10-11 18:32:02,870 INFO L80 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 68 events. 5/68 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 135. Up to 8 conditions per place. [2020-10-11 18:32:02,870 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2020-10-11 18:32:02,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 57 transitions, 232 flow [2020-10-11 18:32:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:32:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:32:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 403 transitions. [2020-10-11 18:32:02,873 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8343685300207039 [2020-10-11 18:32:02,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 403 transitions. [2020-10-11 18:32:02,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 403 transitions. [2020-10-11 18:32:02,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:32:02,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 403 transitions. [2020-10-11 18:32:02,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:32:02,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:32:02,876 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:32:02,876 INFO L185 Difference]: Start difference. First operand has 98 places, 59 transitions, 218 flow. Second operand 7 states and 403 transitions. [2020-10-11 18:32:02,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 57 transitions, 232 flow [2020-10-11 18:32:02,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 57 transitions, 166 flow, removed 15 selfloop flow, removed 18 redundant places. [2020-10-11 18:32:02,878 INFO L241 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2020-10-11 18:32:02,878 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2020-10-11 18:32:02,878 INFO L341 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2020-10-11 18:32:02,879 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2020-10-11 18:32:02,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:32:02,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:32:02,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:32:02 BasicIcfg [2020-10-11 18:32:02,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:32:02,888 INFO L168 Benchmark]: Toolchain (without parser) took 6750.64 ms. Allocated memory was 253.8 MB in the beginning and 422.6 MB in the end (delta: 168.8 MB). Free memory was 207.0 MB in the beginning and 272.5 MB in the end (delta: -65.5 MB). Peak memory consumption was 103.3 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:02,889 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 253.8 MB. Free memory was 229.3 MB in the beginning and 228.5 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. [2020-10-11 18:32:02,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.91 ms. Allocated memory was 253.8 MB in the beginning and 321.9 MB in the end (delta: 68.2 MB). Free memory was 207.0 MB in the beginning and 274.1 MB in the end (delta: -67.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:02,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.90 ms. Allocated memory is still 321.9 MB. Free memory was 274.1 MB in the beginning and 271.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:02,891 INFO L168 Benchmark]: Boogie Preprocessor took 25.22 ms. Allocated memory is still 321.9 MB. Free memory was 271.5 MB in the beginning and 269.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:02,892 INFO L168 Benchmark]: RCFGBuilder took 429.82 ms. Allocated memory is still 321.9 MB. Free memory was 269.8 MB in the beginning and 247.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:02,893 INFO L168 Benchmark]: TraceAbstraction took 5538.31 ms. Allocated memory was 321.9 MB in the beginning and 422.6 MB in the end (delta: 100.7 MB). Free memory was 246.9 MB in the beginning and 272.5 MB in the end (delta: -25.6 MB). Peak memory consumption was 75.1 MB. Max. memory is 14.2 GB. [2020-10-11 18:32:02,897 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 253.8 MB. Free memory was 229.3 MB in the beginning and 228.5 MB in the end (delta: 839.0 kB). Peak memory consumption was 839.0 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 702.91 ms. Allocated memory was 253.8 MB in the beginning and 321.9 MB in the end (delta: 68.2 MB). Free memory was 207.0 MB in the beginning and 274.1 MB in the end (delta: -67.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.90 ms. Allocated memory is still 321.9 MB. Free memory was 274.1 MB in the beginning and 271.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.22 ms. Allocated memory is still 321.9 MB. Free memory was 271.5 MB in the beginning and 269.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 429.82 ms. Allocated memory is still 321.9 MB. Free memory was 269.8 MB in the beginning and 247.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5538.31 ms. Allocated memory was 321.9 MB in the beginning and 422.6 MB in the end (delta: 100.7 MB). Free memory was 246.9 MB in the beginning and 272.5 MB in the end (delta: -25.6 MB). Peak memory consumption was 75.1 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 68 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: 5.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 251 SDslu, 679 SDs, 0 SdLazy, 665 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=471occurred in iteration=7, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 44669 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...