/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:44:24,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:44:24,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:44:24,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:44:24,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:44:24,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:44:24,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:44:24,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:44:24,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:44:24,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:44:24,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:44:24,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:44:24,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:44:24,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:44:24,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:44:24,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:44:24,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:44:24,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:44:24,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:44:24,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:44:24,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:44:24,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:44:24,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:44:24,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:44:24,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:44:24,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:44:24,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:44:24,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:44:24,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:44:24,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:44:24,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:44:24,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:44:24,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:44:24,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:44:24,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:44:24,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:44:24,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:44:24,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:44:24,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:44:24,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:44:24,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:44:24,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:44:24,851 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:44:24,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:44:24,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:44:24,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:44:24,853 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:44:24,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:44:24,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:44:24,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:44:24,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:44:24,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:44:24,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:44:24,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:44:24,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:44:24,855 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:44:24,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:44:24,855 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:44:24,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:44:24,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:44:24,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:44:24,856 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:44:24,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:44:24,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:44:24,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:44:24,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:44:24,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:44:24,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:44:24,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:44:24,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:44:24,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:44:25,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:44:25,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:44:25,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:44:25,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:44:25,228 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:44:25,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i [2020-10-16 01:44:25,289 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4b880bd/d653cd05d85e4eb9aa74e7e668ce493b/FLAG956a3d310 [2020-10-16 01:44:25,811 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:44:25,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i [2020-10-16 01:44:25,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4b880bd/d653cd05d85e4eb9aa74e7e668ce493b/FLAG956a3d310 [2020-10-16 01:44:26,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf4b880bd/d653cd05d85e4eb9aa74e7e668ce493b [2020-10-16 01:44:26,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:44:26,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:44:26,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:44:26,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:44:26,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:44:26,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4b4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26, skipping insertion in model container [2020-10-16 01:44:26,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:44:26,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:44:26,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:44:26,719 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:44:26,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:44:26,858 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:44:26,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26 WrapperNode [2020-10-16 01:44:26,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:44:26,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:44:26,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:44:26,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:44:26,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:44:26,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:44:26,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:44:26,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:44:26,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... [2020-10-16 01:44:26,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:44:26,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:44:26,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:44:26,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:44:26,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:44:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:44:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:44:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:44:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:44:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:44:27,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:44:27,023 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:44:27,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:44:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:44:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:44:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:44:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:44:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:44:27,027 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:44:27,414 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:44:27,415 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:44:27,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:27 BoogieIcfgContainer [2020-10-16 01:44:27,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:44:27,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:44:27,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:44:27,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:44:27,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:44:26" (1/3) ... [2020-10-16 01:44:27,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f7f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:27, skipping insertion in model container [2020-10-16 01:44:27,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:44:26" (2/3) ... [2020-10-16 01:44:27,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f7f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:44:27, skipping insertion in model container [2020-10-16 01:44:27,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:44:27" (3/3) ... [2020-10-16 01:44:27,426 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc.i [2020-10-16 01:44:27,437 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:44:27,445 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:44:27,445 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:44:27,471 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,471 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,471 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,472 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,472 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,472 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,473 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,473 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,474 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,474 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,474 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,475 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,475 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,475 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,476 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,480 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,480 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,480 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,489 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,489 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,490 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,490 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,491 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,492 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,492 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:44:27,507 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:44:27,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:44:27,526 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:44:27,526 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:44:27,526 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:44:27,527 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:44:27,527 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:44:27,527 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:44:27,527 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:44:27,540 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:44:27,583 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 01:44:27,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:27,589 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 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-16 01:44:27,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 01:44:27,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 01:44:27,597 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:44:27,600 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:44:27,602 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 01:44:27,602 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 01:44:27,623 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 01:44:27,623 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:27,624 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-16 01:44:27,626 INFO L117 LiptonReduction]: Number of co-enabled transitions 804 [2020-10-16 01:44:29,011 INFO L132 LiptonReduction]: Checked pairs total: 1634 [2020-10-16 01:44:29,011 INFO L134 LiptonReduction]: Total number of compositions: 44 [2020-10-16 01:44:29,014 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1419 [2020-10-16 01:44:29,022 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2020-10-16 01:44:29,023 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:29,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:29,024 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:29,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:29,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1926828197, now seen corresponding path program 1 times [2020-10-16 01:44:29,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:29,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431411383] [2020-10-16 01:44:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:29,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431411383] [2020-10-16 01:44:29,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:29,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:44:29,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018216315] [2020-10-16 01:44:29,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:44:29,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:29,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:44:29,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:44:29,300 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 113 [2020-10-16 01:44:29,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states. [2020-10-16 01:44:29,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:29,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 113 [2020-10-16 01:44:29,305 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:29,324 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2020-10-16 01:44:29,324 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:44:29,325 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:44:29,326 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2020-10-16 01:44:29,326 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 16 transitions, 47 flow [2020-10-16 01:44:29,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:44:29,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:44:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2020-10-16 01:44:29,344 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8495575221238938 [2020-10-16 01:44:29,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2020-10-16 01:44:29,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2020-10-16 01:44:29,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:29,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2020-10-16 01:44:29,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:44:29,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:44:29,362 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:44:29,365 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 288 transitions. [2020-10-16 01:44:29,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 16 transitions, 47 flow [2020-10-16 01:44:29,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 16 transitions, 44 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:44:29,372 INFO L241 Difference]: Finished difference. Result has 26 places, 16 transitions, 46 flow [2020-10-16 01:44:29,375 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2020-10-16 01:44:29,376 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2020-10-16 01:44:29,376 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 46 flow [2020-10-16 01:44:29,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:44:29,377 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:29,377 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:29,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:44:29,378 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:29,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:29,378 INFO L82 PathProgramCache]: Analyzing trace with hash 397867617, now seen corresponding path program 1 times [2020-10-16 01:44:29,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:29,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555451220] [2020-10-16 01:44:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:29,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555451220] [2020-10-16 01:44:29,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:29,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:44:29,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244632353] [2020-10-16 01:44:29,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:29,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:29,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:29,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:29,476 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 113 [2020-10-16 01:44:29,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 46 flow. Second operand 4 states. [2020-10-16 01:44:29,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:29,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 113 [2020-10-16 01:44:29,477 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:29,514 INFO L129 PetriNetUnfolder]: 5/36 cut-off events. [2020-10-16 01:44:29,514 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:44:29,515 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 36 events. 5/36 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 95 event pairs, 1 based on Foata normal form. 4/39 useless extension candidates. Maximal degree in co-relation 64. Up to 7 conditions per place. [2020-10-16 01:44:29,516 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 4 selfloop transitions, 3 changer transitions 1/19 dead transitions. [2020-10-16 01:44:29,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 71 flow [2020-10-16 01:44:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2020-10-16 01:44:29,520 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7920353982300885 [2020-10-16 01:44:29,521 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2020-10-16 01:44:29,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2020-10-16 01:44:29,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:29,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2020-10-16 01:44:29,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:29,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:29,525 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:29,525 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 46 flow. Second operand 4 states and 358 transitions. [2020-10-16 01:44:29,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 71 flow [2020-10-16 01:44:29,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 65 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:44:29,527 INFO L241 Difference]: Finished difference. Result has 29 places, 16 transitions, 56 flow [2020-10-16 01:44:29,527 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2020-10-16 01:44:29,528 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2020-10-16 01:44:29,528 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 56 flow [2020-10-16 01:44:29,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:29,529 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:29,529 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:29,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:44:29,530 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:29,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:29,530 INFO L82 PathProgramCache]: Analyzing trace with hash -902241234, now seen corresponding path program 1 times [2020-10-16 01:44:29,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:29,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70680268] [2020-10-16 01:44:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:29,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70680268] [2020-10-16 01:44:29,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:29,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:44:29,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463263506] [2020-10-16 01:44:29,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:29,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:29,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:29,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:29,622 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 113 [2020-10-16 01:44:29,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 56 flow. Second operand 4 states. [2020-10-16 01:44:29,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:29,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 113 [2020-10-16 01:44:29,623 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:29,693 INFO L129 PetriNetUnfolder]: 28/68 cut-off events. [2020-10-16 01:44:29,693 INFO L130 PetriNetUnfolder]: For 73/78 co-relation queries the response was YES. [2020-10-16 01:44:29,694 INFO L80 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 68 events. 28/68 cut-off events. For 73/78 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 217 event pairs, 12 based on Foata normal form. 10/74 useless extension candidates. Maximal degree in co-relation 153. Up to 45 conditions per place. [2020-10-16 01:44:29,695 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 4 changer transitions 7/26 dead transitions. [2020-10-16 01:44:29,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 108 flow [2020-10-16 01:44:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:44:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:44:29,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 413 transitions. [2020-10-16 01:44:29,698 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7309734513274336 [2020-10-16 01:44:29,698 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 413 transitions. [2020-10-16 01:44:29,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 413 transitions. [2020-10-16 01:44:29,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:29,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 413 transitions. [2020-10-16 01:44:29,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:44:29,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:44:29,702 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:44:29,702 INFO L185 Difference]: Start difference. First operand has 29 places, 16 transitions, 56 flow. Second operand 5 states and 413 transitions. [2020-10-16 01:44:29,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 108 flow [2020-10-16 01:44:29,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 96 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:44:29,704 INFO L241 Difference]: Finished difference. Result has 32 places, 19 transitions, 80 flow [2020-10-16 01:44:29,704 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2020-10-16 01:44:29,705 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2020-10-16 01:44:29,705 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 80 flow [2020-10-16 01:44:29,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:29,705 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:29,705 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:29,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:44:29,706 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:29,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2095275937, now seen corresponding path program 1 times [2020-10-16 01:44:29,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:29,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612207690] [2020-10-16 01:44:29,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:29,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612207690] [2020-10-16 01:44:29,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:29,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:29,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940000380] [2020-10-16 01:44:29,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:44:29,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:29,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:44:29,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:44:29,778 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 113 [2020-10-16 01:44:29,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 80 flow. Second operand 5 states. [2020-10-16 01:44:29,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:29,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 113 [2020-10-16 01:44:29,779 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:29,839 INFO L129 PetriNetUnfolder]: 16/49 cut-off events. [2020-10-16 01:44:29,839 INFO L130 PetriNetUnfolder]: For 66/95 co-relation queries the response was YES. [2020-10-16 01:44:29,840 INFO L80 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 49 events. 16/49 cut-off events. For 66/95 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 128 event pairs, 2 based on Foata normal form. 12/59 useless extension candidates. Maximal degree in co-relation 164. Up to 35 conditions per place. [2020-10-16 01:44:29,841 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 7 changer transitions 7/29 dead transitions. [2020-10-16 01:44:29,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 176 flow [2020-10-16 01:44:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:44:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:44:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2020-10-16 01:44:29,844 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7300884955752213 [2020-10-16 01:44:29,844 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2020-10-16 01:44:29,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2020-10-16 01:44:29,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:29,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2020-10-16 01:44:29,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:44:29,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:44:29,847 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:44:29,848 INFO L185 Difference]: Start difference. First operand has 32 places, 19 transitions, 80 flow. Second operand 6 states and 495 transitions. [2020-10-16 01:44:29,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 176 flow [2020-10-16 01:44:29,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 170 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:44:29,850 INFO L241 Difference]: Finished difference. Result has 36 places, 22 transitions, 130 flow [2020-10-16 01:44:29,850 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2020-10-16 01:44:29,851 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2020-10-16 01:44:29,851 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 130 flow [2020-10-16 01:44:29,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:44:29,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:29,851 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:29,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:44:29,852 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:29,852 INFO L82 PathProgramCache]: Analyzing trace with hash -809571543, now seen corresponding path program 1 times [2020-10-16 01:44:29,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:29,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141987102] [2020-10-16 01:44:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:29,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141987102] [2020-10-16 01:44:29,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:29,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:44:29,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835654607] [2020-10-16 01:44:29,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:44:29,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:29,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:44:29,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:44:29,927 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 113 [2020-10-16 01:44:29,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 130 flow. Second operand 6 states. [2020-10-16 01:44:29,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:29,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 113 [2020-10-16 01:44:29,928 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:30,006 INFO L129 PetriNetUnfolder]: 7/31 cut-off events. [2020-10-16 01:44:30,007 INFO L130 PetriNetUnfolder]: For 97/137 co-relation queries the response was YES. [2020-10-16 01:44:30,007 INFO L80 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 31 events. 7/31 cut-off events. For 97/137 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 12/42 useless extension candidates. Maximal degree in co-relation 122. Up to 20 conditions per place. [2020-10-16 01:44:30,008 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 2 selfloop transitions, 10 changer transitions 4/26 dead transitions. [2020-10-16 01:44:30,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 198 flow [2020-10-16 01:44:30,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:44:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:44:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 571 transitions. [2020-10-16 01:44:30,011 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7218710493046776 [2020-10-16 01:44:30,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 571 transitions. [2020-10-16 01:44:30,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 571 transitions. [2020-10-16 01:44:30,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:30,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 571 transitions. [2020-10-16 01:44:30,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:44:30,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:44:30,015 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:44:30,015 INFO L185 Difference]: Start difference. First operand has 36 places, 22 transitions, 130 flow. Second operand 7 states and 571 transitions. [2020-10-16 01:44:30,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 198 flow [2020-10-16 01:44:30,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 162 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 01:44:30,019 INFO L241 Difference]: Finished difference. Result has 39 places, 22 transitions, 132 flow [2020-10-16 01:44:30,019 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2020-10-16 01:44:30,020 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2020-10-16 01:44:30,020 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 132 flow [2020-10-16 01:44:30,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:44:30,020 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:30,020 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:30,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:44:30,021 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:30,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:30,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1561429207, now seen corresponding path program 1 times [2020-10-16 01:44:30,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:30,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660618284] [2020-10-16 01:44:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:30,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660618284] [2020-10-16 01:44:30,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:30,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:30,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075797350] [2020-10-16 01:44:30,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:30,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:30,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:30,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:30,058 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 113 [2020-10-16 01:44:30,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 132 flow. Second operand 4 states. [2020-10-16 01:44:30,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:30,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 113 [2020-10-16 01:44:30,059 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:30,085 INFO L129 PetriNetUnfolder]: 12/47 cut-off events. [2020-10-16 01:44:30,086 INFO L130 PetriNetUnfolder]: For 98/107 co-relation queries the response was YES. [2020-10-16 01:44:30,086 INFO L80 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 47 events. 12/47 cut-off events. For 98/107 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 118 event pairs, 0 based on Foata normal form. 3/49 useless extension candidates. Maximal degree in co-relation 153. Up to 23 conditions per place. [2020-10-16 01:44:30,087 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 4 selfloop transitions, 1 changer transitions 2/24 dead transitions. [2020-10-16 01:44:30,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 24 transitions, 152 flow [2020-10-16 01:44:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:30,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 356 transitions. [2020-10-16 01:44:30,089 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7876106194690266 [2020-10-16 01:44:30,089 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 356 transitions. [2020-10-16 01:44:30,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 356 transitions. [2020-10-16 01:44:30,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:30,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 356 transitions. [2020-10-16 01:44:30,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:30,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:30,092 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:30,092 INFO L185 Difference]: Start difference. First operand has 39 places, 22 transitions, 132 flow. Second operand 4 states and 356 transitions. [2020-10-16 01:44:30,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 24 transitions, 152 flow [2020-10-16 01:44:30,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 109 flow, removed 13 selfloop flow, removed 7 redundant places. [2020-10-16 01:44:30,095 INFO L241 Difference]: Finished difference. Result has 35 places, 22 transitions, 97 flow [2020-10-16 01:44:30,095 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2020-10-16 01:44:30,096 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2020-10-16 01:44:30,096 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 97 flow [2020-10-16 01:44:30,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:30,096 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:44:30,096 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:44:30,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:44:30,097 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:44:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:44:30,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1120662827, now seen corresponding path program 2 times [2020-10-16 01:44:30,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:44:30,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190608841] [2020-10-16 01:44:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:44:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:44:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:44:30,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190608841] [2020-10-16 01:44:30,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:44:30,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:44:30,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915556023] [2020-10-16 01:44:30,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:44:30,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:44:30,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:44:30,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:44:30,133 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 113 [2020-10-16 01:44:30,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 97 flow. Second operand 4 states. [2020-10-16 01:44:30,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:44:30,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 113 [2020-10-16 01:44:30,134 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:44:30,151 INFO L129 PetriNetUnfolder]: 7/36 cut-off events. [2020-10-16 01:44:30,151 INFO L130 PetriNetUnfolder]: For 26/29 co-relation queries the response was YES. [2020-10-16 01:44:30,152 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 36 events. 7/36 cut-off events. For 26/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 71 event pairs, 0 based on Foata normal form. 2/37 useless extension candidates. Maximal degree in co-relation 92. Up to 12 conditions per place. [2020-10-16 01:44:30,152 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 01:44:30,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 103 flow [2020-10-16 01:44:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:44:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:44:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2020-10-16 01:44:30,154 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8163716814159292 [2020-10-16 01:44:30,154 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2020-10-16 01:44:30,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2020-10-16 01:44:30,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:44:30,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2020-10-16 01:44:30,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:44:30,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:44:30,157 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:44:30,157 INFO L185 Difference]: Start difference. First operand has 35 places, 22 transitions, 97 flow. Second operand 4 states and 369 transitions. [2020-10-16 01:44:30,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 103 flow [2020-10-16 01:44:30,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:44:30,159 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2020-10-16 01:44:30,159 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2020-10-16 01:44:30,160 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2020-10-16 01:44:30,160 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2020-10-16 01:44:30,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:44:30,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:44:30,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:44:30 BasicIcfg [2020-10-16 01:44:30,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:44:30,169 INFO L168 Benchmark]: Toolchain (without parser) took 4010.21 ms. Allocated memory was 252.7 MB in the beginning and 370.1 MB in the end (delta: 117.4 MB). Free memory was 205.3 MB in the beginning and 257.1 MB in the end (delta: -51.8 MB). Peak memory consumption was 65.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:30,171 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 01:44:30,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.57 ms. Allocated memory was 252.7 MB in the beginning and 316.1 MB in the end (delta: 63.4 MB). Free memory was 205.3 MB in the beginning and 267.0 MB in the end (delta: -61.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:30,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 316.1 MB. Free memory was 267.0 MB in the beginning and 264.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:30,177 INFO L168 Benchmark]: Boogie Preprocessor took 32.76 ms. Allocated memory is still 316.1 MB. Free memory was 264.4 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:30,179 INFO L168 Benchmark]: RCFGBuilder took 473.73 ms. Allocated memory is still 316.1 MB. Free memory was 261.9 MB in the beginning and 240.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:30,180 INFO L168 Benchmark]: TraceAbstraction took 2747.19 ms. Allocated memory was 316.1 MB in the beginning and 370.1 MB in the end (delta: 54.0 MB). Free memory was 240.1 MB in the beginning and 257.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 36.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:44:30,185 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 700.57 ms. Allocated memory was 252.7 MB in the beginning and 316.1 MB in the end (delta: 63.4 MB). Free memory was 205.3 MB in the beginning and 267.0 MB in the end (delta: -61.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.60 ms. Allocated memory is still 316.1 MB. Free memory was 267.0 MB in the beginning and 264.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 32.76 ms. Allocated memory is still 316.1 MB. Free memory was 264.4 MB in the beginning and 261.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 473.73 ms. Allocated memory is still 316.1 MB. Free memory was 261.9 MB in the beginning and 240.1 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2747.19 ms. Allocated memory was 316.1 MB in the beginning and 370.1 MB in the end (delta: 54.0 MB). Free memory was 240.1 MB in the beginning and 257.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 36.9 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 617 VarBasedMoverChecksPositive, 49 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 42 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 81 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 64 PlacesBefore, 26 PlacesAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 1634 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 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: 2.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 21 SDtfs, 17 SDslu, 14 SDs, 0 SdLazy, 113 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 2428 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...