/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:25:22,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:25:22,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:25:22,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:25:22,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:25:22,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:25:22,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:25:22,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:25:22,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:25:22,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:25:22,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:25:22,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:25:22,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:25:22,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:25:22,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:25:22,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:25:22,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:25:22,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:25:22,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:25:22,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:25:22,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:25:22,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:25:22,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:25:22,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:25:22,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:25:22,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:25:22,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:25:22,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:25:22,426 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 [2021-03-11 20:25:22,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:25:22,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:25:22,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:25:22,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:25:22,461 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:25:22,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:25:22,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:25:22,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:25:22,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:25:22,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:25:22,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:25:22,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:25:22,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:25:22,463 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:25:22,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:25:22,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:25:22,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:25:22,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:25:22,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:25:22,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:25:22,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:25:22,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:25:22,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:25:22,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:25:22,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:25:22,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:25:22,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:25:22,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:25:22,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:25:22,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:25:22,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:25:22,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:25:22,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:25:22,776 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:25:22,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2021-03-11 20:25:22,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e845d33/3abc2800545444e6bcd38e2f99597525/FLAG7c18b2c3c [2021-03-11 20:25:23,535 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:25:23,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i [2021-03-11 20:25:23,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e845d33/3abc2800545444e6bcd38e2f99597525/FLAG7c18b2c3c [2021-03-11 20:25:23,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3e845d33/3abc2800545444e6bcd38e2f99597525 [2021-03-11 20:25:23,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:25:23,680 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:25:23,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:25:23,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:25:23,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:25:23,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:25:23" (1/1) ... [2021-03-11 20:25:23,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5209f2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:23, skipping insertion in model container [2021-03-11 20:25:23,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:25:23" (1/1) ... [2021-03-11 20:25:23,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:25:23,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:25:23,946 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i[950,963] [2021-03-11 20:25:24,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:25:24,077 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:25:24,087 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc.i[950,963] [2021-03-11 20:25:24,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:25:24,177 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:25:24,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24 WrapperNode [2021-03-11 20:25:24,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:25:24,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:25:24,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:25:24,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:25:24,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... [2021-03-11 20:25:24,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... [2021-03-11 20:25:24,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:25:24,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:25:24,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:25:24,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:25:24,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... [2021-03-11 20:25:24,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... [2021-03-11 20:25:24,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... [2021-03-11 20:25:24,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... [2021-03-11 20:25:24,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... [2021-03-11 20:25:24,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... [2021-03-11 20:25:24,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... [2021-03-11 20:25:24,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:25:24,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:25:24,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:25:24,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:25:24,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:25:24,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:25:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:25:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:25:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:25:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:25:24,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:25:24,313 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:25:24,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:25:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:25:24,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:25:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-11 20:25:24,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-11 20:25:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:25:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:25:24,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:25:24,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:25:24,316 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:25:24,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:25:24,688 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:25:24,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:25:24 BoogieIcfgContainer [2021-03-11 20:25:24,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:25:24,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:25:24,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:25:24,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:25:24,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:25:23" (1/3) ... [2021-03-11 20:25:24,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df4ebe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:25:24, skipping insertion in model container [2021-03-11 20:25:24,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:24" (2/3) ... [2021-03-11 20:25:24,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df4ebe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:25:24, skipping insertion in model container [2021-03-11 20:25:24,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:25:24" (3/3) ... [2021-03-11 20:25:24,697 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc.i [2021-03-11 20:25:24,702 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:25:24,705 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:25:24,706 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:25:24,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,739 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,739 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,739 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,741 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,741 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,748 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,748 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,749 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,750 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,750 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,750 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,750 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,751 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,751 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,751 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,751 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,751 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,751 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,751 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,753 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,753 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,757 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,758 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,758 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,758 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,761 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,761 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,761 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,761 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,763 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,763 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,763 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,763 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:24,765 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:25:24,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 20:25:24,803 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:25:24,803 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:25:24,803 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:25:24,804 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:25:24,804 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:25:24,804 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:25:24,804 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:25:24,804 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:25:24,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2021-03-11 20:25:24,842 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-03-11 20:25:24,842 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:24,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-11 20:25:24,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2021-03-11 20:25:24,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:24,851 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:25:24,860 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:24,864 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:24,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:24,885 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-03-11 20:25:24,886 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:24,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-03-11 20:25:24,887 INFO L116 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-11 20:25:27,044 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-03-11 20:25:27,244 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-03-11 20:25:27,306 INFO L131 LiptonReduction]: Checked pairs total: 2149 [2021-03-11 20:25:27,306 INFO L133 LiptonReduction]: Total number of compositions: 52 [2021-03-11 20:25:27,307 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2459 [2021-03-11 20:25:27,322 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 20:25:27,322 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:27,322 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:27,323 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:27,323 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:27,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:27,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1488768315, now seen corresponding path program 1 times [2021-03-11 20:25:27,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:27,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840422035] [2021-03-11 20:25:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:27,569 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:27,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:27,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840422035] [2021-03-11 20:25:27,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:27,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:27,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718834262] [2021-03-11 20:25:27,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:27,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:27,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:27,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:27,602 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:27,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:27,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:27,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:27,663 INFO L129 PetriNetUnfolder]: 45/127 cut-off events. [2021-03-11 20:25:27,663 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:27,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 127 events. 45/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 574 event pairs, 27 based on Foata normal form. 24/141 useless extension candidates. Maximal degree in co-relation 220. Up to 78 conditions per place. [2021-03-11 20:25:27,667 INFO L132 encePairwiseOnDemand]: 130/138 looper letters, 5 selfloop transitions, 6 changer transitions 0/24 dead transitions. [2021-03-11 20:25:27,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 82 flow [2021-03-11 20:25:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2021-03-11 20:25:27,682 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7946859903381642 [2021-03-11 20:25:27,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2021-03-11 20:25:27,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2021-03-11 20:25:27,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:27,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2021-03-11 20:25:27,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,699 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 329 transitions. [2021-03-11 20:25:27,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 82 flow [2021-03-11 20:25:27,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 78 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 20:25:27,702 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2021-03-11 20:25:27,704 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2021-03-11 20:25:27,704 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2021-03-11 20:25:27,704 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2021-03-11 20:25:27,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,705 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:27,705 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:27,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:25:27,705 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:27,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:27,706 INFO L82 PathProgramCache]: Analyzing trace with hash -690613596, now seen corresponding path program 1 times [2021-03-11 20:25:27,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:27,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108430274] [2021-03-11 20:25:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:27,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:27,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:27,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108430274] [2021-03-11 20:25:27,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:27,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:27,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814067486] [2021-03-11 20:25:27,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:27,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:27,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:27,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:27,786 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 138 [2021-03-11 20:25:27,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:27,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 138 [2021-03-11 20:25:27,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:27,802 INFO L129 PetriNetUnfolder]: 35/112 cut-off events. [2021-03-11 20:25:27,802 INFO L130 PetriNetUnfolder]: For 28/42 co-relation queries the response was YES. [2021-03-11 20:25:27,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 112 events. 35/112 cut-off events. For 28/42 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 484 event pairs, 19 based on Foata normal form. 3/108 useless extension candidates. Maximal degree in co-relation 224. Up to 63 conditions per place. [2021-03-11 20:25:27,803 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 1 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-03-11 20:25:27,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 92 flow [2021-03-11 20:25:27,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:27,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2021-03-11 20:25:27,805 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2021-03-11 20:25:27,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2021-03-11 20:25:27,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2021-03-11 20:25:27,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:27,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2021-03-11 20:25:27,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,808 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 3 states and 358 transitions. [2021-03-11 20:25:27,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 92 flow [2021-03-11 20:25:27,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:27,813 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 89 flow [2021-03-11 20:25:27,813 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-11 20:25:27,814 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2021-03-11 20:25:27,814 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 89 flow [2021-03-11 20:25:27,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,814 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:27,814 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:27,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:25:27,814 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:27,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:27,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1092821475, now seen corresponding path program 1 times [2021-03-11 20:25:27,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:27,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000383786] [2021-03-11 20:25:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:27,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:27,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:27,886 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:27,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:27,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000383786] [2021-03-11 20:25:27,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:27,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:27,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323763451] [2021-03-11 20:25:27,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:27,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:27,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:27,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:27,897 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:27,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:27,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:27,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:27,927 INFO L129 PetriNetUnfolder]: 28/93 cut-off events. [2021-03-11 20:25:27,927 INFO L130 PetriNetUnfolder]: For 41/129 co-relation queries the response was YES. [2021-03-11 20:25:27,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 93 events. 28/93 cut-off events. For 41/129 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 360 event pairs, 11 based on Foata normal form. 7/94 useless extension candidates. Maximal degree in co-relation 241. Up to 53 conditions per place. [2021-03-11 20:25:27,928 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 9 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2021-03-11 20:25:27,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 138 flow [2021-03-11 20:25:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:27,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 433 transitions. [2021-03-11 20:25:27,930 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7844202898550725 [2021-03-11 20:25:27,930 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 433 transitions. [2021-03-11 20:25:27,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 433 transitions. [2021-03-11 20:25:27,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:27,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 433 transitions. [2021-03-11 20:25:27,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,934 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,934 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 89 flow. Second operand 4 states and 433 transitions. [2021-03-11 20:25:27,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 138 flow [2021-03-11 20:25:27,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:25:27,936 INFO L241 Difference]: Finished difference. Result has 38 places, 26 transitions, 121 flow [2021-03-11 20:25:27,936 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2021-03-11 20:25:27,936 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2021-03-11 20:25:27,936 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 121 flow [2021-03-11 20:25:27,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,937 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:27,937 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:27,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:25:27,937 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:27,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:27,937 INFO L82 PathProgramCache]: Analyzing trace with hash -482274620, now seen corresponding path program 1 times [2021-03-11 20:25:27,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:27,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564673779] [2021-03-11 20:25:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:27,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:27,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:27,974 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:27,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:27,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564673779] [2021-03-11 20:25:27,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:27,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:27,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4461403] [2021-03-11 20:25:27,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:27,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:27,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:27,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:27,991 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 138 [2021-03-11 20:25:27,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:27,992 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:27,992 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 138 [2021-03-11 20:25:27,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:28,069 INFO L129 PetriNetUnfolder]: 107/246 cut-off events. [2021-03-11 20:25:28,069 INFO L130 PetriNetUnfolder]: For 281/584 co-relation queries the response was YES. [2021-03-11 20:25:28,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 246 events. 107/246 cut-off events. For 281/584 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1161 event pairs, 14 based on Foata normal form. 13/252 useless extension candidates. Maximal degree in co-relation 753. Up to 117 conditions per place. [2021-03-11 20:25:28,076 INFO L132 encePairwiseOnDemand]: 130/138 looper letters, 14 selfloop transitions, 23 changer transitions 0/49 dead transitions. [2021-03-11 20:25:28,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 49 transitions, 335 flow [2021-03-11 20:25:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2021-03-11 20:25:28,079 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7782608695652173 [2021-03-11 20:25:28,079 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2021-03-11 20:25:28,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2021-03-11 20:25:28,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:28,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2021-03-11 20:25:28,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,083 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,083 INFO L185 Difference]: Start difference. First operand has 38 places, 26 transitions, 121 flow. Second operand 5 states and 537 transitions. [2021-03-11 20:25:28,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 49 transitions, 335 flow [2021-03-11 20:25:28,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:28,088 INFO L241 Difference]: Finished difference. Result has 45 places, 43 transitions, 337 flow [2021-03-11 20:25:28,088 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2021-03-11 20:25:28,089 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2021-03-11 20:25:28,090 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 337 flow [2021-03-11 20:25:28,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,090 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:28,090 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:28,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:25:28,090 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:28,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:28,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1043875580, now seen corresponding path program 2 times [2021-03-11 20:25:28,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:28,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760189463] [2021-03-11 20:25:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:28,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:28,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:28,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760189463] [2021-03-11 20:25:28,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:28,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:28,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971380458] [2021-03-11 20:25:28,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:28,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:28,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:28,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:28,158 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2021-03-11 20:25:28,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:28,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2021-03-11 20:25:28,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:28,227 INFO L129 PetriNetUnfolder]: 74/225 cut-off events. [2021-03-11 20:25:28,227 INFO L130 PetriNetUnfolder]: For 719/1072 co-relation queries the response was YES. [2021-03-11 20:25:28,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 225 events. 74/225 cut-off events. For 719/1072 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1289 event pairs, 9 based on Foata normal form. 24/245 useless extension candidates. Maximal degree in co-relation 902. Up to 110 conditions per place. [2021-03-11 20:25:28,229 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 5 selfloop transitions, 5 changer transitions 15/46 dead transitions. [2021-03-11 20:25:28,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 46 transitions, 397 flow [2021-03-11 20:25:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2021-03-11 20:25:28,231 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.822463768115942 [2021-03-11 20:25:28,231 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2021-03-11 20:25:28,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2021-03-11 20:25:28,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:28,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2021-03-11 20:25:28,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,234 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,234 INFO L185 Difference]: Start difference. First operand has 45 places, 43 transitions, 337 flow. Second operand 4 states and 454 transitions. [2021-03-11 20:25:28,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 46 transitions, 397 flow [2021-03-11 20:25:28,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:25:28,240 INFO L241 Difference]: Finished difference. Result has 50 places, 29 transitions, 220 flow [2021-03-11 20:25:28,240 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=50, PETRI_TRANSITIONS=29} [2021-03-11 20:25:28,241 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2021-03-11 20:25:28,241 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 29 transitions, 220 flow [2021-03-11 20:25:28,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,242 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:28,242 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:28,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:25:28,242 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:28,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2040239339, now seen corresponding path program 1 times [2021-03-11 20:25:28,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:28,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139996133] [2021-03-11 20:25:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:28,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:28,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139996133] [2021-03-11 20:25:28,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:28,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:28,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985182350] [2021-03-11 20:25:28,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:28,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:28,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:28,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:28,303 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 138 [2021-03-11 20:25:28,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 29 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:28,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 138 [2021-03-11 20:25:28,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:28,322 INFO L129 PetriNetUnfolder]: 24/86 cut-off events. [2021-03-11 20:25:28,322 INFO L130 PetriNetUnfolder]: For 358/415 co-relation queries the response was YES. [2021-03-11 20:25:28,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 86 events. 24/86 cut-off events. For 358/415 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 335 event pairs, 8 based on Foata normal form. 3/86 useless extension candidates. Maximal degree in co-relation 380. Up to 47 conditions per place. [2021-03-11 20:25:28,323 INFO L132 encePairwiseOnDemand]: 134/138 looper letters, 11 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2021-03-11 20:25:28,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 35 transitions, 316 flow [2021-03-11 20:25:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2021-03-11 20:25:28,326 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2021-03-11 20:25:28,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2021-03-11 20:25:28,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2021-03-11 20:25:28,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:28,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2021-03-11 20:25:28,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,331 INFO L185 Difference]: Start difference. First operand has 50 places, 29 transitions, 220 flow. Second operand 3 states and 354 transitions. [2021-03-11 20:25:28,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 35 transitions, 316 flow [2021-03-11 20:25:28,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 212 flow, removed 16 selfloop flow, removed 10 redundant places. [2021-03-11 20:25:28,333 INFO L241 Difference]: Finished difference. Result has 43 places, 33 transitions, 192 flow [2021-03-11 20:25:28,334 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2021-03-11 20:25:28,334 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2021-03-11 20:25:28,334 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 192 flow [2021-03-11 20:25:28,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,334 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:28,334 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:28,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:25:28,335 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:28,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:28,335 INFO L82 PathProgramCache]: Analyzing trace with hash -298211780, now seen corresponding path program 1 times [2021-03-11 20:25:28,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:28,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960860352] [2021-03-11 20:25:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:28,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:28,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:28,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960860352] [2021-03-11 20:25:28,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:28,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:28,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551303082] [2021-03-11 20:25:28,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:28,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:28,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:28,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:28,395 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2021-03-11 20:25:28,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:28,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2021-03-11 20:25:28,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:28,426 INFO L129 PetriNetUnfolder]: 24/101 cut-off events. [2021-03-11 20:25:28,426 INFO L130 PetriNetUnfolder]: For 185/207 co-relation queries the response was YES. [2021-03-11 20:25:28,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 101 events. 24/101 cut-off events. For 185/207 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 471 event pairs, 11 based on Foata normal form. 7/105 useless extension candidates. Maximal degree in co-relation 320. Up to 54 conditions per place. [2021-03-11 20:25:28,427 INFO L132 encePairwiseOnDemand]: 133/138 looper letters, 5 selfloop transitions, 7 changer transitions 7/37 dead transitions. [2021-03-11 20:25:28,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 260 flow [2021-03-11 20:25:28,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2021-03-11 20:25:28,429 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8242753623188406 [2021-03-11 20:25:28,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2021-03-11 20:25:28,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2021-03-11 20:25:28,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:28,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2021-03-11 20:25:28,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,432 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,432 INFO L185 Difference]: Start difference. First operand has 43 places, 33 transitions, 192 flow. Second operand 4 states and 455 transitions. [2021-03-11 20:25:28,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 260 flow [2021-03-11 20:25:28,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 37 transitions, 252 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:28,434 INFO L241 Difference]: Finished difference. Result has 46 places, 30 transitions, 180 flow [2021-03-11 20:25:28,434 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2021-03-11 20:25:28,434 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2021-03-11 20:25:28,434 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 180 flow [2021-03-11 20:25:28,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,434 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:28,434 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:28,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:25:28,435 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:28,435 INFO L82 PathProgramCache]: Analyzing trace with hash 388887100, now seen corresponding path program 2 times [2021-03-11 20:25:28,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:28,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773528880] [2021-03-11 20:25:28,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:28,504 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:28,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:28,512 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:28,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:28,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773528880] [2021-03-11 20:25:28,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:28,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:28,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561937622] [2021-03-11 20:25:28,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:28,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:28,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:28,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:28,521 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:28,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:28,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:28,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:28,598 INFO L129 PetriNetUnfolder]: 301/553 cut-off events. [2021-03-11 20:25:28,599 INFO L130 PetriNetUnfolder]: For 1362/1559 co-relation queries the response was YES. [2021-03-11 20:25:28,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 553 events. 301/553 cut-off events. For 1362/1559 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 3112 event pairs, 151 based on Foata normal form. 42/528 useless extension candidates. Maximal degree in co-relation 1408. Up to 372 conditions per place. [2021-03-11 20:25:28,604 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 10 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2021-03-11 20:25:28,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 246 flow [2021-03-11 20:25:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2021-03-11 20:25:28,607 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7782608695652173 [2021-03-11 20:25:28,607 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2021-03-11 20:25:28,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2021-03-11 20:25:28,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:28,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2021-03-11 20:25:28,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,610 INFO L185 Difference]: Start difference. First operand has 46 places, 30 transitions, 180 flow. Second operand 5 states and 537 transitions. [2021-03-11 20:25:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 246 flow [2021-03-11 20:25:28,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 221 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-11 20:25:28,615 INFO L241 Difference]: Finished difference. Result has 48 places, 39 transitions, 230 flow [2021-03-11 20:25:28,615 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2021-03-11 20:25:28,616 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2021-03-11 20:25:28,616 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 230 flow [2021-03-11 20:25:28,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,616 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:28,616 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:28,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:25:28,616 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:28,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:28,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2029087293, now seen corresponding path program 1 times [2021-03-11 20:25:28,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:28,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048701104] [2021-03-11 20:25:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:28,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:28,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:28,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048701104] [2021-03-11 20:25:28,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:28,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:28,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501082875] [2021-03-11 20:25:28,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:28,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:28,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:28,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:28,657 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 138 [2021-03-11 20:25:28,657 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:28,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 138 [2021-03-11 20:25:28,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:28,715 INFO L129 PetriNetUnfolder]: 327/604 cut-off events. [2021-03-11 20:25:28,715 INFO L130 PetriNetUnfolder]: For 1979/2429 co-relation queries the response was YES. [2021-03-11 20:25:28,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 604 events. 327/604 cut-off events. For 1979/2429 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 3453 event pairs, 159 based on Foata normal form. 31/549 useless extension candidates. Maximal degree in co-relation 1941. Up to 499 conditions per place. [2021-03-11 20:25:28,719 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 7 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2021-03-11 20:25:28,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 254 flow [2021-03-11 20:25:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2021-03-11 20:25:28,721 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8526570048309179 [2021-03-11 20:25:28,721 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2021-03-11 20:25:28,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2021-03-11 20:25:28,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:28,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2021-03-11 20:25:28,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,723 INFO L185 Difference]: Start difference. First operand has 48 places, 39 transitions, 230 flow. Second operand 3 states and 353 transitions. [2021-03-11 20:25:28,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 254 flow [2021-03-11 20:25:28,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 249 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:28,727 INFO L241 Difference]: Finished difference. Result has 50 places, 39 transitions, 242 flow [2021-03-11 20:25:28,727 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2021-03-11 20:25:28,727 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2021-03-11 20:25:28,727 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 242 flow [2021-03-11 20:25:28,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,728 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:28,728 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:28,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:25:28,728 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:28,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1347353325, now seen corresponding path program 1 times [2021-03-11 20:25:28,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:28,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816280043] [2021-03-11 20:25:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:28,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:28,774 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:28,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:28,779 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:28,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:28,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816280043] [2021-03-11 20:25:28,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:28,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:28,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326983148] [2021-03-11 20:25:28,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:28,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:28,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:28,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:28,791 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:28,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:28,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:28,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:28,885 INFO L129 PetriNetUnfolder]: 302/598 cut-off events. [2021-03-11 20:25:28,886 INFO L130 PetriNetUnfolder]: For 1955/3716 co-relation queries the response was YES. [2021-03-11 20:25:28,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 598 events. 302/598 cut-off events. For 1955/3716 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 3593 event pairs, 47 based on Foata normal form. 174/713 useless extension candidates. Maximal degree in co-relation 2383. Up to 515 conditions per place. [2021-03-11 20:25:28,890 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 10 selfloop transitions, 19 changer transitions 0/52 dead transitions. [2021-03-11 20:25:28,890 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 52 transitions, 376 flow [2021-03-11 20:25:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:25:28,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:25:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 752 transitions. [2021-03-11 20:25:28,892 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7784679089026915 [2021-03-11 20:25:28,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 752 transitions. [2021-03-11 20:25:28,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 752 transitions. [2021-03-11 20:25:28,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:28,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 752 transitions. [2021-03-11 20:25:28,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,896 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,896 INFO L185 Difference]: Start difference. First operand has 50 places, 39 transitions, 242 flow. Second operand 7 states and 752 transitions. [2021-03-11 20:25:28,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 52 transitions, 376 flow [2021-03-11 20:25:28,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 367 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:28,901 INFO L241 Difference]: Finished difference. Result has 58 places, 48 transitions, 367 flow [2021-03-11 20:25:28,901 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2021-03-11 20:25:28,901 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2021-03-11 20:25:28,901 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 367 flow [2021-03-11 20:25:28,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,902 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:28,902 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:28,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:25:28,902 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:28,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:28,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1181727270, now seen corresponding path program 1 times [2021-03-11 20:25:28,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:28,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914547821] [2021-03-11 20:25:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:28,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:28,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:28,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:28,956 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:28,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:28,964 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:28,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:28,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914547821] [2021-03-11 20:25:28,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:28,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:25:28,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132758201] [2021-03-11 20:25:28,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:25:28,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:28,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:25:28,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:25:28,974 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:28,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:28,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:28,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:28,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:29,089 INFO L129 PetriNetUnfolder]: 269/560 cut-off events. [2021-03-11 20:25:29,090 INFO L130 PetriNetUnfolder]: For 3245/7351 co-relation queries the response was YES. [2021-03-11 20:25:29,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3148 conditions, 560 events. 269/560 cut-off events. For 3245/7351 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 3497 event pairs, 6 based on Foata normal form. 304/809 useless extension candidates. Maximal degree in co-relation 3124. Up to 499 conditions per place. [2021-03-11 20:25:29,094 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 6 selfloop transitions, 28 changer transitions 4/61 dead transitions. [2021-03-11 20:25:29,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 569 flow [2021-03-11 20:25:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 20:25:29,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 20:25:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 967 transitions. [2021-03-11 20:25:29,097 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7785829307568438 [2021-03-11 20:25:29,097 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 967 transitions. [2021-03-11 20:25:29,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 967 transitions. [2021-03-11 20:25:29,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:29,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 967 transitions. [2021-03-11 20:25:29,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.44444444444444) internal successors, (967), 9 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,103 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,103 INFO L185 Difference]: Start difference. First operand has 58 places, 48 transitions, 367 flow. Second operand 9 states and 967 transitions. [2021-03-11 20:25:29,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 569 flow [2021-03-11 20:25:29,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 519 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-11 20:25:29,111 INFO L241 Difference]: Finished difference. Result has 66 places, 57 transitions, 495 flow [2021-03-11 20:25:29,111 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=495, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2021-03-11 20:25:29,112 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2021-03-11 20:25:29,112 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 495 flow [2021-03-11 20:25:29,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,112 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:29,112 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:29,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:25:29,113 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:29,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:29,113 INFO L82 PathProgramCache]: Analyzing trace with hash 536052844, now seen corresponding path program 1 times [2021-03-11 20:25:29,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:29,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975029559] [2021-03-11 20:25:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:29,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:29,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:29,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:29,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:29,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:29,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:29,153 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:29,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:29,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:29,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975029559] [2021-03-11 20:25:29,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:29,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:25:29,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758936316] [2021-03-11 20:25:29,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:29,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:29,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:29,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:29,166 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:29,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 495 flow. Second operand has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:29,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:29,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:29,249 INFO L129 PetriNetUnfolder]: 320/669 cut-off events. [2021-03-11 20:25:29,249 INFO L130 PetriNetUnfolder]: For 4812/5601 co-relation queries the response was YES. [2021-03-11 20:25:29,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 669 events. 320/669 cut-off events. For 4812/5601 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 4410 event pairs, 7 based on Foata normal form. 18/612 useless extension candidates. Maximal degree in co-relation 3598. Up to 454 conditions per place. [2021-03-11 20:25:29,254 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 8 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2021-03-11 20:25:29,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 539 flow [2021-03-11 20:25:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:25:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:25:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2021-03-11 20:25:29,284 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7801932367149759 [2021-03-11 20:25:29,284 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 646 transitions. [2021-03-11 20:25:29,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 646 transitions. [2021-03-11 20:25:29,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:29,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 646 transitions. [2021-03-11 20:25:29,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.66666666666667) internal successors, (646), 6 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,288 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,288 INFO L185 Difference]: Start difference. First operand has 66 places, 57 transitions, 495 flow. Second operand 6 states and 646 transitions. [2021-03-11 20:25:29,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 539 flow [2021-03-11 20:25:29,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 59 transitions, 442 flow, removed 34 selfloop flow, removed 4 redundant places. [2021-03-11 20:25:29,309 INFO L241 Difference]: Finished difference. Result has 68 places, 57 transitions, 421 flow [2021-03-11 20:25:29,309 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=421, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2021-03-11 20:25:29,309 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 35 predicate places. [2021-03-11 20:25:29,309 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 421 flow [2021-03-11 20:25:29,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,310 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:29,310 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:29,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 20:25:29,310 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:29,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1018610622, now seen corresponding path program 2 times [2021-03-11 20:25:29,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:29,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216694239] [2021-03-11 20:25:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:29,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:29,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:29,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:29,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:29,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:29,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:29,379 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:29,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:29,385 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:29,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:29,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216694239] [2021-03-11 20:25:29,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:29,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:25:29,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160263147] [2021-03-11 20:25:29,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:25:29,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:29,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:25:29,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:25:29,397 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:29,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 421 flow. Second operand has 7 states, 7 states have (on average 103.85714285714286) internal successors, (727), 7 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:29,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:29,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:29,546 INFO L129 PetriNetUnfolder]: 310/656 cut-off events. [2021-03-11 20:25:29,546 INFO L130 PetriNetUnfolder]: For 2419/4236 co-relation queries the response was YES. [2021-03-11 20:25:29,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 656 events. 310/656 cut-off events. For 2419/4236 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 4411 event pairs, 1 based on Foata normal form. 357/939 useless extension candidates. Maximal degree in co-relation 2905. Up to 220 conditions per place. [2021-03-11 20:25:29,550 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 2 selfloop transitions, 30 changer transitions 15/62 dead transitions. [2021-03-11 20:25:29,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 62 transitions, 555 flow [2021-03-11 20:25:29,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 20:25:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 20:25:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1174 transitions. [2021-03-11 20:25:29,553 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7733860342555995 [2021-03-11 20:25:29,553 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1174 transitions. [2021-03-11 20:25:29,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1174 transitions. [2021-03-11 20:25:29,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:29,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1174 transitions. [2021-03-11 20:25:29,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 106.72727272727273) internal successors, (1174), 11 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 138.0) internal successors, (1656), 12 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,559 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 138.0) internal successors, (1656), 12 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,559 INFO L185 Difference]: Start difference. First operand has 68 places, 57 transitions, 421 flow. Second operand 11 states and 1174 transitions. [2021-03-11 20:25:29,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 62 transitions, 555 flow [2021-03-11 20:25:29,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 62 transitions, 542 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:25:29,573 INFO L241 Difference]: Finished difference. Result has 79 places, 47 transitions, 411 flow [2021-03-11 20:25:29,573 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=411, PETRI_PLACES=79, PETRI_TRANSITIONS=47} [2021-03-11 20:25:29,573 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 46 predicate places. [2021-03-11 20:25:29,574 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 47 transitions, 411 flow [2021-03-11 20:25:29,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 103.85714285714286) internal successors, (727), 7 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,574 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:29,574 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] [2021-03-11 20:25:29,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 20:25:29,574 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:29,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:29,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1598705357, now seen corresponding path program 1 times [2021-03-11 20:25:29,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:29,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206711114] [2021-03-11 20:25:29,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:29,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:29,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:29,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:29,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:29,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:29,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:29,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206711114] [2021-03-11 20:25:29,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:29,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:29,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123623884] [2021-03-11 20:25:29,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:29,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:29,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:29,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:29,608 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2021-03-11 20:25:29,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 47 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:29,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2021-03-11 20:25:29,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:29,636 INFO L129 PetriNetUnfolder]: 82/209 cut-off events. [2021-03-11 20:25:29,637 INFO L130 PetriNetUnfolder]: For 1007/1135 co-relation queries the response was YES. [2021-03-11 20:25:29,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 209 events. 82/209 cut-off events. For 1007/1135 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1059 event pairs, 1 based on Foata normal form. 5/191 useless extension candidates. Maximal degree in co-relation 915. Up to 60 conditions per place. [2021-03-11 20:25:29,638 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2021-03-11 20:25:29,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 46 transitions, 389 flow [2021-03-11 20:25:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2021-03-11 20:25:29,639 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8134057971014492 [2021-03-11 20:25:29,639 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2021-03-11 20:25:29,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2021-03-11 20:25:29,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:29,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2021-03-11 20:25:29,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,642 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,642 INFO L185 Difference]: Start difference. First operand has 79 places, 47 transitions, 411 flow. Second operand 4 states and 449 transitions. [2021-03-11 20:25:29,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 46 transitions, 389 flow [2021-03-11 20:25:29,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 232 flow, removed 23 selfloop flow, removed 26 redundant places. [2021-03-11 20:25:29,646 INFO L241 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2021-03-11 20:25:29,647 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2021-03-11 20:25:29,647 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2021-03-11 20:25:29,647 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2021-03-11 20:25:29,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:29,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 20:25:29,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:25:29 BasicIcfg [2021-03-11 20:25:29,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:25:29,652 INFO L168 Benchmark]: Toolchain (without parser) took 5974.86 ms. Allocated memory was 255.9 MB in the beginning and 453.0 MB in the end (delta: 197.1 MB). Free memory was 233.2 MB in the beginning and 333.4 MB in the end (delta: -100.2 MB). Peak memory consumption was 96.5 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:29,652 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:25:29,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 493.76 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 232.6 MB in the beginning and 339.1 MB in the end (delta: -106.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:29,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.18 ms. Allocated memory is still 377.5 MB. Free memory was 339.1 MB in the beginning and 337.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:25:29,654 INFO L168 Benchmark]: Boogie Preprocessor took 24.07 ms. Allocated memory is still 377.5 MB. Free memory was 337.5 MB in the beginning and 336.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:29,655 INFO L168 Benchmark]: RCFGBuilder took 436.21 ms. Allocated memory is still 377.5 MB. Free memory was 335.6 MB in the beginning and 351.7 MB in the end (delta: -16.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:29,655 INFO L168 Benchmark]: TraceAbstraction took 4959.76 ms. Allocated memory was 377.5 MB in the beginning and 453.0 MB in the end (delta: 75.5 MB). Free memory was 351.7 MB in the beginning and 333.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 93.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:29,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 493.76 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 232.6 MB in the beginning and 339.1 MB in the end (delta: -106.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 50.18 ms. Allocated memory is still 377.5 MB. Free memory was 339.1 MB in the beginning and 337.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.07 ms. Allocated memory is still 377.5 MB. Free memory was 337.5 MB in the beginning and 336.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 436.21 ms. Allocated memory is still 377.5 MB. Free memory was 335.6 MB in the beginning and 351.7 MB in the end (delta: -16.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4959.76 ms. Allocated memory was 377.5 MB in the beginning and 453.0 MB in the end (delta: 75.5 MB). Free memory was 351.7 MB in the beginning and 333.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 93.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2442.2ms, 80 PlacesBefore, 33 PlacesAfterwards, 68 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 2149 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1271, positive: 1194, positive conditional: 0, positive unconditional: 1194, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 883, positive: 854, positive conditional: 0, positive unconditional: 854, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 883, positive: 837, positive conditional: 0, positive unconditional: 837, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 169, positive: 69, positive conditional: 0, positive unconditional: 69, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1271, positive: 340, positive conditional: 0, positive unconditional: 340, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 883, unknown conditional: 0, unknown unconditional: 883] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4847.1ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1209.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2514.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 46 SDslu, 43 SDs, 0 SdLazy, 249 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 200.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 204.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=495occurred in iteration=11, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.7ms SsaConstructionTime, 248.4ms SatisfiabilityAnalysisTime, 626.5ms InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 743 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...