/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/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:44:47,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:44:47,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:44:47,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:44:47,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:44:47,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:44:47,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:44:47,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:44:47,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:44:47,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:44:47,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:44:47,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:44:47,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:44:47,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:44:47,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:44:47,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:44:47,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:44:47,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:44:47,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:44:47,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:44:47,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:44:47,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:44:47,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:44:47,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:44:47,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:44:47,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:44:47,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:44:47,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:44:47,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:44:47,807 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:44:47,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:44:47,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:44:47,809 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:44:47,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:44:47,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:44:47,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:44:47,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:44:47,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:44:47,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:44:47,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:44:47,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:44:47,822 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 18:44:47,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:44:47,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:44:47,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:44:47,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:44:47,846 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:44:47,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:44:47,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:44:47,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:44:47,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:44:47,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:44:47,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:44:47,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:44:47,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:44:47,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:44:47,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:44:47,848 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:44:47,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:44:47,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:44:47,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:44:47,848 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:44:47,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:44:47,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:44:47,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:44:47,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:44:47,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:44:47,849 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:44:47,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:44:47,850 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:44:47,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:44:47,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:44:48,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:44:48,187 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:44:48,191 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:44:48,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:44:48,193 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:44:48,193 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2020-10-11 18:44:48,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c65faf66/4237434caf8c46e482db76ca1deb6c4b/FLAG2dd44a924 [2020-10-11 18:44:48,762 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:44:48,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2020-10-11 18:44:48,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c65faf66/4237434caf8c46e482db76ca1deb6c4b/FLAG2dd44a924 [2020-10-11 18:44:49,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c65faf66/4237434caf8c46e482db76ca1deb6c4b [2020-10-11 18:44:49,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:44:49,056 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:44:49,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:44:49,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:44:49,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:44:49,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e1c5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49, skipping insertion in model container [2020-10-11 18:44:49,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:44:49,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:44:49,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:44:49,588 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:44:49,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:44:49,746 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:44:49,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49 WrapperNode [2020-10-11 18:44:49,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:44:49,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:44:49,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:44:49,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:44:49,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:44:49,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:44:49,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:44:49,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:44:49,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (1/1) ... [2020-10-11 18:44:49,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:44:49,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:44:49,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:44:49,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:44:49,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (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 18:44:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:44:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:44:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:44:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:44:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:44:49,891 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:44:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:44:49,891 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:44:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-11 18:44:49,891 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-11 18:44:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:44:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:44:49,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:44:49,893 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 18:44:50,249 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:44:50,249 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:44:50,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:44:50 BoogieIcfgContainer [2020-10-11 18:44:50,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:44:50,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:44:50,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:44:50,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:44:50,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:44:49" (1/3) ... [2020-10-11 18:44:50,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d846dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:44:50, skipping insertion in model container [2020-10-11 18:44:50,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:44:49" (2/3) ... [2020-10-11 18:44:50,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d846dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:44:50, skipping insertion in model container [2020-10-11 18:44:50,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:44:50" (3/3) ... [2020-10-11 18:44:50,260 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2020-10-11 18:44:50,269 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:44:50,276 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:44:50,277 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:44:50,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,304 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,305 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,306 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,306 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,307 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,307 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,308 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,308 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,308 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,309 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,309 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,309 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,318 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,320 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,322 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,323 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,323 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,323 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:44:50,340 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-11 18:44:50,359 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:44:50,359 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:44:50,359 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:44:50,359 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:44:50,359 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:44:50,360 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:44:50,360 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:44:50,360 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:44:50,378 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-11 18:44:50,421 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-11 18:44:50,421 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:44:50,427 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. [2020-10-11 18:44:50,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 68 transitions, 151 flow [2020-10-11 18:44:50,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 54 transitions, 117 flow [2020-10-11 18:44:50,451 INFO L129 PetriNetUnfolder]: 1/53 cut-off events. [2020-10-11 18:44:50,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:44:50,452 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:50,453 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] [2020-10-11 18:44:50,453 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:50,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1107897661, now seen corresponding path program 1 times [2020-10-11 18:44:50,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:50,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330986098] [2020-10-11 18:44:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:50,878 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 18:44:50,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330986098] [2020-10-11 18:44:50,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:50,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:50,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981276253] [2020-10-11 18:44:50,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:50,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:50,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:50,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:51,101 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2020-10-11 18:44:51,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 117 flow. Second operand 6 states. [2020-10-11 18:44:51,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:51,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2020-10-11 18:44:51,106 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:51,301 INFO L129 PetriNetUnfolder]: 24/123 cut-off events. [2020-10-11 18:44:51,301 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:44:51,303 INFO L80 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 123 events. 24/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 404 event pairs, 5 based on Foata normal form. 6/126 useless extension candidates. Maximal degree in co-relation 171. Up to 31 conditions per place. [2020-10-11 18:44:51,305 INFO L132 encePairwiseOnDemand]: 60/68 looper letters, 8 selfloop transitions, 3 changer transitions 19/74 dead transitions. [2020-10-11 18:44:51,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 217 flow [2020-10-11 18:44:51,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 547 transitions. [2020-10-11 18:44:51,325 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8937908496732027 [2020-10-11 18:44:51,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 547 transitions. [2020-10-11 18:44:51,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 547 transitions. [2020-10-11 18:44:51,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:51,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 547 transitions. [2020-10-11 18:44:51,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:51,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:51,347 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:51,350 INFO L185 Difference]: Start difference. First operand has 63 places, 54 transitions, 117 flow. Second operand 9 states and 547 transitions. [2020-10-11 18:44:51,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 217 flow [2020-10-11 18:44:51,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 74 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-11 18:44:51,361 INFO L241 Difference]: Finished difference. Result has 75 places, 55 transitions, 155 flow [2020-10-11 18:44:51,365 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=155, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2020-10-11 18:44:51,366 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2020-10-11 18:44:51,366 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 155 flow [2020-10-11 18:44:51,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:51,366 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:51,367 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] [2020-10-11 18:44:51,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:44:51,367 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:51,368 INFO L82 PathProgramCache]: Analyzing trace with hash -963264194, now seen corresponding path program 1 times [2020-10-11 18:44:51,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:51,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211557695] [2020-10-11 18:44:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:51,557 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 18:44:51,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211557695] [2020-10-11 18:44:51,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:51,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:51,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826771376] [2020-10-11 18:44:51,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:51,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:51,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:51,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:51,748 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2020-10-11 18:44:51,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 155 flow. Second operand 6 states. [2020-10-11 18:44:51,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:51,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2020-10-11 18:44:51,749 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:51,923 INFO L129 PetriNetUnfolder]: 74/294 cut-off events. [2020-10-11 18:44:51,923 INFO L130 PetriNetUnfolder]: For 270/273 co-relation queries the response was YES. [2020-10-11 18:44:51,927 INFO L80 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 294 events. 74/294 cut-off events. For 270/273 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1588 event pairs, 27 based on Foata normal form. 10/292 useless extension candidates. Maximal degree in co-relation 615. Up to 60 conditions per place. [2020-10-11 18:44:51,929 INFO L132 encePairwiseOnDemand]: 61/68 looper letters, 8 selfloop transitions, 3 changer transitions 19/76 dead transitions. [2020-10-11 18:44:51,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 275 flow [2020-10-11 18:44:51,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 545 transitions. [2020-10-11 18:44:51,933 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8905228758169934 [2020-10-11 18:44:51,933 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 545 transitions. [2020-10-11 18:44:51,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 545 transitions. [2020-10-11 18:44:51,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:51,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 545 transitions. [2020-10-11 18:44:51,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:51,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:51,937 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:51,938 INFO L185 Difference]: Start difference. First operand has 75 places, 55 transitions, 155 flow. Second operand 9 states and 545 transitions. [2020-10-11 18:44:51,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 275 flow [2020-10-11 18:44:51,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 258 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:44:51,944 INFO L241 Difference]: Finished difference. Result has 80 places, 57 transitions, 189 flow [2020-10-11 18:44:51,944 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=189, PETRI_PLACES=80, PETRI_TRANSITIONS=57} [2020-10-11 18:44:51,945 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 17 predicate places. [2020-10-11 18:44:51,945 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 57 transitions, 189 flow [2020-10-11 18:44:51,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:51,945 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:51,946 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 18:44:51,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:44:51,946 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:51,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:51,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1409244846, now seen corresponding path program 1 times [2020-10-11 18:44:51,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:51,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307328846] [2020-10-11 18:44:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:52,051 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 18:44:52,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307328846] [2020-10-11 18:44:52,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:52,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:52,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410436431] [2020-10-11 18:44:52,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:52,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:52,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:52,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:52,175 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2020-10-11 18:44:52,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 57 transitions, 189 flow. Second operand 6 states. [2020-10-11 18:44:52,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:52,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2020-10-11 18:44:52,176 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:52,344 INFO L129 PetriNetUnfolder]: 141/440 cut-off events. [2020-10-11 18:44:52,344 INFO L130 PetriNetUnfolder]: For 914/942 co-relation queries the response was YES. [2020-10-11 18:44:52,348 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 440 events. 141/440 cut-off events. For 914/942 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2620 event pairs, 47 based on Foata normal form. 15/433 useless extension candidates. Maximal degree in co-relation 1220. Up to 110 conditions per place. [2020-10-11 18:44:52,352 INFO L132 encePairwiseOnDemand]: 61/68 looper letters, 8 selfloop transitions, 3 changer transitions 19/78 dead transitions. [2020-10-11 18:44:52,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 319 flow [2020-10-11 18:44:52,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 545 transitions. [2020-10-11 18:44:52,355 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8905228758169934 [2020-10-11 18:44:52,355 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 545 transitions. [2020-10-11 18:44:52,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 545 transitions. [2020-10-11 18:44:52,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:52,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 545 transitions. [2020-10-11 18:44:52,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:52,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:52,359 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:52,360 INFO L185 Difference]: Start difference. First operand has 80 places, 57 transitions, 189 flow. Second operand 9 states and 545 transitions. [2020-10-11 18:44:52,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 319 flow [2020-10-11 18:44:52,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 302 flow, removed 7 selfloop flow, removed 4 redundant places. [2020-10-11 18:44:52,367 INFO L241 Difference]: Finished difference. Result has 85 places, 59 transitions, 223 flow [2020-10-11 18:44:52,368 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=223, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2020-10-11 18:44:52,368 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2020-10-11 18:44:52,368 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 223 flow [2020-10-11 18:44:52,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:52,369 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:52,369 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] [2020-10-11 18:44:52,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:44:52,370 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:52,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:52,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1590743139, now seen corresponding path program 1 times [2020-10-11 18:44:52,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:52,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880859744] [2020-10-11 18:44:52,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:52,470 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 18:44:52,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880859744] [2020-10-11 18:44:52,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:52,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:52,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646520067] [2020-10-11 18:44:52,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:52,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:52,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:52,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:52,642 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2020-10-11 18:44:52,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 223 flow. Second operand 6 states. [2020-10-11 18:44:52,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:52,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2020-10-11 18:44:52,643 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:52,811 INFO L129 PetriNetUnfolder]: 103/415 cut-off events. [2020-10-11 18:44:52,812 INFO L130 PetriNetUnfolder]: For 1408/1462 co-relation queries the response was YES. [2020-10-11 18:44:52,815 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1419 conditions, 415 events. 103/415 cut-off events. For 1408/1462 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2634 event pairs, 40 based on Foata normal form. 13/411 useless extension candidates. Maximal degree in co-relation 1380. Up to 74 conditions per place. [2020-10-11 18:44:52,820 INFO L132 encePairwiseOnDemand]: 62/68 looper letters, 12 selfloop transitions, 3 changer transitions 10/73 dead transitions. [2020-10-11 18:44:52,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 73 transitions, 387 flow [2020-10-11 18:44:52,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 539 transitions. [2020-10-11 18:44:52,824 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.880718954248366 [2020-10-11 18:44:52,824 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 539 transitions. [2020-10-11 18:44:52,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 539 transitions. [2020-10-11 18:44:52,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:52,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 539 transitions. [2020-10-11 18:44:52,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:52,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:52,828 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:52,828 INFO L185 Difference]: Start difference. First operand has 85 places, 59 transitions, 223 flow. Second operand 9 states and 539 transitions. [2020-10-11 18:44:52,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 73 transitions, 387 flow [2020-10-11 18:44:52,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 73 transitions, 356 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-11 18:44:52,835 INFO L241 Difference]: Finished difference. Result has 90 places, 59 transitions, 235 flow [2020-10-11 18:44:52,835 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=235, PETRI_PLACES=90, PETRI_TRANSITIONS=59} [2020-10-11 18:44:52,835 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 27 predicate places. [2020-10-11 18:44:52,836 INFO L481 AbstractCegarLoop]: Abstraction has has 90 places, 59 transitions, 235 flow [2020-10-11 18:44:52,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:52,836 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:52,836 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] [2020-10-11 18:44:52,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:44:52,837 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:52,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:52,837 INFO L82 PathProgramCache]: Analyzing trace with hash -537520021, now seen corresponding path program 1 times [2020-10-11 18:44:52,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:52,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33948296] [2020-10-11 18:44:52,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:52,929 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 18:44:52,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33948296] [2020-10-11 18:44:52,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:52,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:52,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093724105] [2020-10-11 18:44:52,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:52,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:52,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:52,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:53,054 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2020-10-11 18:44:53,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 59 transitions, 235 flow. Second operand 6 states. [2020-10-11 18:44:53,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:53,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2020-10-11 18:44:53,055 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:53,235 INFO L129 PetriNetUnfolder]: 106/512 cut-off events. [2020-10-11 18:44:53,235 INFO L130 PetriNetUnfolder]: For 2400/2485 co-relation queries the response was YES. [2020-10-11 18:44:53,239 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 512 events. 106/512 cut-off events. For 2400/2485 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3767 event pairs, 56 based on Foata normal form. 18/504 useless extension candidates. Maximal degree in co-relation 1792. Up to 94 conditions per place. [2020-10-11 18:44:53,243 INFO L132 encePairwiseOnDemand]: 62/68 looper letters, 12 selfloop transitions, 3 changer transitions 10/73 dead transitions. [2020-10-11 18:44:53,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 73 transitions, 415 flow [2020-10-11 18:44:53,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:53,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 539 transitions. [2020-10-11 18:44:53,247 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.880718954248366 [2020-10-11 18:44:53,247 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 539 transitions. [2020-10-11 18:44:53,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 539 transitions. [2020-10-11 18:44:53,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:53,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 539 transitions. [2020-10-11 18:44:53,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:53,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:53,252 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:53,252 INFO L185 Difference]: Start difference. First operand has 90 places, 59 transitions, 235 flow. Second operand 9 states and 539 transitions. [2020-10-11 18:44:53,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 73 transitions, 415 flow [2020-10-11 18:44:53,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 73 transitions, 358 flow, removed 27 selfloop flow, removed 7 redundant places. [2020-10-11 18:44:53,263 INFO L241 Difference]: Finished difference. Result has 92 places, 59 transitions, 235 flow [2020-10-11 18:44:53,264 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=235, PETRI_PLACES=92, PETRI_TRANSITIONS=59} [2020-10-11 18:44:53,264 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 29 predicate places. [2020-10-11 18:44:53,264 INFO L481 AbstractCegarLoop]: Abstraction has has 92 places, 59 transitions, 235 flow [2020-10-11 18:44:53,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:53,264 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:53,264 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] [2020-10-11 18:44:53,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:44:53,265 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:53,265 INFO L82 PathProgramCache]: Analyzing trace with hash 716008013, now seen corresponding path program 1 times [2020-10-11 18:44:53,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:53,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200728713] [2020-10-11 18:44:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:53,395 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 18:44:53,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200728713] [2020-10-11 18:44:53,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:53,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:53,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905792545] [2020-10-11 18:44:53,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:53,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:53,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:53,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:53,582 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2020-10-11 18:44:53,582 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 59 transitions, 235 flow. Second operand 6 states. [2020-10-11 18:44:53,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:53,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2020-10-11 18:44:53,583 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:53,770 INFO L129 PetriNetUnfolder]: 102/601 cut-off events. [2020-10-11 18:44:53,771 INFO L130 PetriNetUnfolder]: For 3068/3197 co-relation queries the response was YES. [2020-10-11 18:44:53,775 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 601 events. 102/601 cut-off events. For 3068/3197 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4831 event pairs, 55 based on Foata normal form. 18/599 useless extension candidates. Maximal degree in co-relation 2106. Up to 99 conditions per place. [2020-10-11 18:44:53,779 INFO L132 encePairwiseOnDemand]: 62/68 looper letters, 12 selfloop transitions, 3 changer transitions 11/73 dead transitions. [2020-10-11 18:44:53,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 73 transitions, 417 flow [2020-10-11 18:44:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 539 transitions. [2020-10-11 18:44:53,783 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.880718954248366 [2020-10-11 18:44:53,783 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 539 transitions. [2020-10-11 18:44:53,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 539 transitions. [2020-10-11 18:44:53,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:53,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 539 transitions. [2020-10-11 18:44:53,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:53,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:53,788 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:53,788 INFO L185 Difference]: Start difference. First operand has 92 places, 59 transitions, 235 flow. Second operand 9 states and 539 transitions. [2020-10-11 18:44:53,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 73 transitions, 417 flow [2020-10-11 18:44:53,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 73 transitions, 360 flow, removed 27 selfloop flow, removed 7 redundant places. [2020-10-11 18:44:53,801 INFO L241 Difference]: Finished difference. Result has 94 places, 58 transitions, 233 flow [2020-10-11 18:44:53,802 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=233, PETRI_PLACES=94, PETRI_TRANSITIONS=58} [2020-10-11 18:44:53,802 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2020-10-11 18:44:53,802 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 58 transitions, 233 flow [2020-10-11 18:44:53,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:53,802 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:53,803 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 18:44:53,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 18:44:53,803 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:53,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1102013952, now seen corresponding path program 1 times [2020-10-11 18:44:53,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:53,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147946909] [2020-10-11 18:44:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:53,911 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 18:44:53,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147946909] [2020-10-11 18:44:53,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:53,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:44:53,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918088079] [2020-10-11 18:44:53,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:44:53,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:53,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:44:53,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:44:54,016 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-11 18:44:54,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 58 transitions, 233 flow. Second operand 6 states. [2020-10-11 18:44:54,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:54,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-11 18:44:54,017 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:54,392 INFO L129 PetriNetUnfolder]: 697/1637 cut-off events. [2020-10-11 18:44:54,392 INFO L130 PetriNetUnfolder]: For 2056/2092 co-relation queries the response was YES. [2020-10-11 18:44:54,404 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3756 conditions, 1637 events. 697/1637 cut-off events. For 2056/2092 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 13319 event pairs, 86 based on Foata normal form. 44/1518 useless extension candidates. Maximal degree in co-relation 3711. Up to 576 conditions per place. [2020-10-11 18:44:54,410 INFO L132 encePairwiseOnDemand]: 59/68 looper letters, 10 selfloop transitions, 6 changer transitions 19/83 dead transitions. [2020-10-11 18:44:54,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 83 transitions, 353 flow [2020-10-11 18:44:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:44:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:44:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 532 transitions. [2020-10-11 18:44:54,415 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.869281045751634 [2020-10-11 18:44:54,415 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 532 transitions. [2020-10-11 18:44:54,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 532 transitions. [2020-10-11 18:44:54,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:54,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 532 transitions. [2020-10-11 18:44:54,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:44:54,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:44:54,419 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:44:54,419 INFO L185 Difference]: Start difference. First operand has 94 places, 58 transitions, 233 flow. Second operand 9 states and 532 transitions. [2020-10-11 18:44:54,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 83 transitions, 353 flow [2020-10-11 18:44:54,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 332 flow, removed 9 selfloop flow, removed 7 redundant places. [2020-10-11 18:44:54,428 INFO L241 Difference]: Finished difference. Result has 94 places, 61 transitions, 268 flow [2020-10-11 18:44:54,428 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=268, PETRI_PLACES=94, PETRI_TRANSITIONS=61} [2020-10-11 18:44:54,428 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 31 predicate places. [2020-10-11 18:44:54,428 INFO L481 AbstractCegarLoop]: Abstraction has has 94 places, 61 transitions, 268 flow [2020-10-11 18:44:54,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:44:54,429 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:54,429 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 18:44:54,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 18:44:54,429 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:54,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:54,430 INFO L82 PathProgramCache]: Analyzing trace with hash -839084161, now seen corresponding path program 1 times [2020-10-11 18:44:54,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:54,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307282017] [2020-10-11 18:44:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:54,570 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 18:44:54,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307282017] [2020-10-11 18:44:54,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:54,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:44:54,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071922354] [2020-10-11 18:44:54,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:44:54,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:54,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:44:54,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:44:54,756 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-11 18:44:54,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 61 transitions, 268 flow. Second operand 7 states. [2020-10-11 18:44:54,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:54,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-11 18:44:54,757 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:55,023 INFO L129 PetriNetUnfolder]: 373/965 cut-off events. [2020-10-11 18:44:55,023 INFO L130 PetriNetUnfolder]: For 2292/2588 co-relation queries the response was YES. [2020-10-11 18:44:55,028 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3647 conditions, 965 events. 373/965 cut-off events. For 2292/2588 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7463 event pairs, 9 based on Foata normal form. 80/989 useless extension candidates. Maximal degree in co-relation 3600. Up to 510 conditions per place. [2020-10-11 18:44:55,031 INFO L132 encePairwiseOnDemand]: 59/68 looper letters, 7 selfloop transitions, 9 changer transitions 22/86 dead transitions. [2020-10-11 18:44:55,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 86 transitions, 521 flow [2020-10-11 18:44:55,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:44:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:44:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2020-10-11 18:44:55,034 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2020-10-11 18:44:55,034 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2020-10-11 18:44:55,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2020-10-11 18:44:55,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:55,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2020-10-11 18:44:55,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:44:55,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:44:55,038 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:44:55,038 INFO L185 Difference]: Start difference. First operand has 94 places, 61 transitions, 268 flow. Second operand 10 states and 590 transitions. [2020-10-11 18:44:55,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 86 transitions, 521 flow [2020-10-11 18:44:55,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 497 flow, removed 7 selfloop flow, removed 5 redundant places. [2020-10-11 18:44:55,047 INFO L241 Difference]: Finished difference. Result has 100 places, 64 transitions, 336 flow [2020-10-11 18:44:55,048 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=336, PETRI_PLACES=100, PETRI_TRANSITIONS=64} [2020-10-11 18:44:55,048 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 37 predicate places. [2020-10-11 18:44:55,048 INFO L481 AbstractCegarLoop]: Abstraction has has 100 places, 64 transitions, 336 flow [2020-10-11 18:44:55,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:44:55,048 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:44:55,049 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 18:44:55,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 18:44:55,049 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:44:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:44:55,049 INFO L82 PathProgramCache]: Analyzing trace with hash -19303808, now seen corresponding path program 1 times [2020-10-11 18:44:55,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:44:55,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439499763] [2020-10-11 18:44:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:44:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:44:55,145 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 18:44:55,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439499763] [2020-10-11 18:44:55,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:44:55,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-11 18:44:55,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543353605] [2020-10-11 18:44:55,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 18:44:55,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:44:55,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 18:44:55,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 18:44:55,350 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-11 18:44:55,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 64 transitions, 336 flow. Second operand 8 states. [2020-10-11 18:44:55,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:44:55,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-11 18:44:55,351 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:44:55,575 INFO L129 PetriNetUnfolder]: 112/452 cut-off events. [2020-10-11 18:44:55,575 INFO L130 PetriNetUnfolder]: For 2671/2898 co-relation queries the response was YES. [2020-10-11 18:44:55,577 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2033 conditions, 452 events. 112/452 cut-off events. For 2671/2898 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3125 event pairs, 0 based on Foata normal form. 86/527 useless extension candidates. Maximal degree in co-relation 1982. Up to 198 conditions per place. [2020-10-11 18:44:55,579 INFO L132 encePairwiseOnDemand]: 59/68 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2020-10-11 18:44:55,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 71 transitions, 478 flow [2020-10-11 18:44:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 18:44:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 18:44:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 636 transitions. [2020-10-11 18:44:55,583 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8502673796791443 [2020-10-11 18:44:55,583 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 636 transitions. [2020-10-11 18:44:55,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 636 transitions. [2020-10-11 18:44:55,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:44:55,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 636 transitions. [2020-10-11 18:44:55,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 18:44:55,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 18:44:55,588 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 18:44:55,588 INFO L185 Difference]: Start difference. First operand has 100 places, 64 transitions, 336 flow. Second operand 11 states and 636 transitions. [2020-10-11 18:44:55,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 71 transitions, 478 flow [2020-10-11 18:44:55,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 71 transitions, 356 flow, removed 47 selfloop flow, removed 21 redundant places. [2020-10-11 18:44:55,599 INFO L241 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2020-10-11 18:44:55,599 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2020-10-11 18:44:55,600 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 16 predicate places. [2020-10-11 18:44:55,600 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2020-10-11 18:44:55,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 18:44:55,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 18:44:55,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:44:55 BasicIcfg [2020-10-11 18:44:55,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:44:55,610 INFO L168 Benchmark]: Toolchain (without parser) took 6554.23 ms. Allocated memory was 252.2 MB in the beginning and 420.5 MB in the end (delta: 168.3 MB). Free memory was 208.2 MB in the beginning and 205.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 170.6 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:55,611 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:44:55,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.20 ms. Allocated memory was 252.2 MB in the beginning and 318.8 MB in the end (delta: 66.6 MB). Free memory was 208.2 MB in the beginning and 274.1 MB in the end (delta: -65.9 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:55,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 318.8 MB. Free memory was 274.1 MB in the beginning and 271.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:55,613 INFO L168 Benchmark]: Boogie Preprocessor took 30.35 ms. Allocated memory is still 318.8 MB. Free memory was 271.4 MB in the beginning and 268.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:55,614 INFO L168 Benchmark]: RCFGBuilder took 426.14 ms. Allocated memory is still 318.8 MB. Free memory was 268.9 MB in the beginning and 247.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:55,615 INFO L168 Benchmark]: TraceAbstraction took 5354.73 ms. Allocated memory was 318.8 MB in the beginning and 420.5 MB in the end (delta: 101.7 MB). Free memory was 247.1 MB in the beginning and 205.8 MB in the end (delta: 41.3 MB). Peak memory consumption was 143.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:44:55,619 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 690.20 ms. Allocated memory was 252.2 MB in the beginning and 318.8 MB in the end (delta: 66.6 MB). Free memory was 208.2 MB in the beginning and 274.1 MB in the end (delta: -65.9 MB). Peak memory consumption was 33.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 318.8 MB. Free memory was 274.1 MB in the beginning and 271.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.35 ms. Allocated memory is still 318.8 MB. Free memory was 271.4 MB in the beginning and 268.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 426.14 ms. Allocated memory is still 318.8 MB. Free memory was 268.9 MB in the beginning and 247.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5354.73 ms. Allocated memory was 318.8 MB in the beginning and 420.5 MB in the end (delta: 101.7 MB). Free memory was 247.1 MB in the beginning and 205.8 MB in the end (delta: 41.3 MB). Peak memory consumption was 143.0 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, 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: 5.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 230 SDslu, 462 SDs, 0 SdLazy, 544 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 35697 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...