/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:06:26,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:06:26,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:06:26,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:06:26,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:06:26,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:06:26,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:06:26,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:06:26,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:06:26,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:06:26,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:06:26,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:06:26,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:06:27,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:06:27,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:06:27,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:06:27,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:06:27,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:06:27,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:06:27,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:06:27,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:06:27,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:06:27,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:06:27,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:06:27,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:06:27,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:06:27,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:06:27,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:06:27,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:06:27,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:06:27,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:06:27,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:06:27,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:06:27,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:06:27,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:06:27,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:06:27,037 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-VariableLbe.epf [2021-03-24 11:06:27,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:06:27,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:06:27,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:06:27,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:06:27,074 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:06:27,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:06:27,074 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:06:27,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:06:27,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:06:27,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:06:27,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:06:27,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:06:27,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:06:27,075 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:06:27,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:06:27,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:06:27,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:06:27,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:06:27,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:06:27,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:06:27,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:06:27,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:06:27,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:06:27,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:06:27,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:06:27,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:06:27,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:06:27,077 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:06:27,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:06:27,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:06:27,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:06:27,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:06:27,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:06:27,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:06:27,386 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:06:27,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2021-03-24 11:06:27,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad965d0d3/8c598b014ef64f1694c59e7221ae3606/FLAG729deb83b [2021-03-24 11:06:27,992 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:06:27,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc.i [2021-03-24 11:06:28,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad965d0d3/8c598b014ef64f1694c59e7221ae3606/FLAG729deb83b [2021-03-24 11:06:28,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad965d0d3/8c598b014ef64f1694c59e7221ae3606 [2021-03-24 11:06:28,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:06:28,424 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:06:28,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:06:28,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:06:28,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:06:28,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd5c882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28, skipping insertion in model container [2021-03-24 11:06:28,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:06:28,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:06:28,595 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/safe027_pso.oepc.i[950,963] [2021-03-24 11:06:28,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:06:28,778 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:06:28,799 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/safe027_pso.oepc.i[950,963] [2021-03-24 11:06:28,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:06:28,883 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:06:28,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28 WrapperNode [2021-03-24 11:06:28,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:06:28,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:06:28,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:06:28,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:06:28,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:06:28,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:06:28,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:06:28,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:06:28,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (1/1) ... [2021-03-24 11:06:28,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:06:28,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:06:28,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:06:28,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:06:28,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (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 [2021-03-24 11:06:29,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:06:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:06:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:06:29,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:06:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:06:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:06:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:06:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:06:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:06:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:06:29,019 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-24 11:06:29,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-24 11:06:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:06:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:06:29,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:06:29,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:06:29,021 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:06:29,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:06:29,375 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:06:29,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:06:29 BoogieIcfgContainer [2021-03-24 11:06:29,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:06:29,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:06:29,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:06:29,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:06:29,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:06:28" (1/3) ... [2021-03-24 11:06:29,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e03c22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:06:29, skipping insertion in model container [2021-03-24 11:06:29,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:06:28" (2/3) ... [2021-03-24 11:06:29,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e03c22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:06:29, skipping insertion in model container [2021-03-24 11:06:29,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:06:29" (3/3) ... [2021-03-24 11:06:29,383 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2021-03-24 11:06:29,387 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:06:29,391 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:06:29,392 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:06:29,417 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,417 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,417 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,417 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,417 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,418 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,418 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,418 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,419 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,419 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,420 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,420 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,421 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,421 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,421 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,422 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,424 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,424 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,424 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,424 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,424 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,424 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,425 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,425 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,425 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,425 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,425 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,425 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,427 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,428 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,428 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,428 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,431 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,432 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,432 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,432 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,436 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,436 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:06:29,437 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:06:29,454 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 11:06:29,472 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:06:29,473 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:06:29,473 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:06:29,473 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:06:29,473 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:06:29,473 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:06:29,473 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:06:29,473 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:06:29,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2021-03-24 11:06:29,516 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-03-24 11:06:29,516 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:06:29,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-24 11:06:29,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 87 transitions, 194 flow [2021-03-24 11:06:29,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2021-03-24 11:06:29,525 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:06:29,533 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 69 transitions, 150 flow [2021-03-24 11:06:29,535 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 69 transitions, 150 flow [2021-03-24 11:06:29,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 69 transitions, 150 flow [2021-03-24 11:06:29,554 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2021-03-24 11:06:29,554 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:06:29,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-03-24 11:06:29,557 INFO L142 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-24 11:06:30,769 INFO L154 LiptonReduction]: Checked pairs total: 1387 [2021-03-24 11:06:30,769 INFO L156 LiptonReduction]: Total number of compositions: 44 [2021-03-24 11:06:30,771 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1247 [2021-03-24 11:06:30,790 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-24 11:06:30,790 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:06:30,790 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:30,791 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:30,791 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:30,800 INFO L82 PathProgramCache]: Analyzing trace with hash 654156635, now seen corresponding path program 1 times [2021-03-24 11:06:30,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:30,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857583914] [2021-03-24 11:06:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:30,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:30,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:30,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:30,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:30,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857583914] [2021-03-24 11:06:30,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:30,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:06:30,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436120299] [2021-03-24 11:06:30,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:06:30,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:31,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:06:31,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:06:31,010 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 131 [2021-03-24 11:06:31,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2021-03-24 11:06:31,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:31,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 131 [2021-03-24 11:06:31,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:31,028 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-24 11:06:31,029 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:06:31,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 25 events. 0/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 11:06:31,030 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 1 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2021-03-24 11:06:31,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 68 flow [2021-03-24 11:06:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:06:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:06:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2021-03-24 11:06:31,041 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9185750636132316 [2021-03-24 11:06:31,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2021-03-24 11:06:31,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2021-03-24 11:06:31,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:31,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2021-03-24 11:06:31,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2021-03-24 11:06:31,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2021-03-24 11:06:31,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2021-03-24 11:06:31,055 INFO L185 Difference]: Start difference. First operand has 38 places, 25 transitions, 62 flow. Second operand 3 states and 361 transitions. [2021-03-24 11:06:31,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 68 flow [2021-03-24 11:06:31,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 64 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 11:06:31,059 INFO L241 Difference]: Finished difference. Result has 37 places, 25 transitions, 66 flow [2021-03-24 11:06:31,061 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2021-03-24 11:06:31,061 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2021-03-24 11:06:31,061 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 66 flow [2021-03-24 11:06:31,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2021-03-24 11:06:31,062 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:31,062 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:31,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:06:31,062 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:31,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:31,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1195981289, now seen corresponding path program 1 times [2021-03-24 11:06:31,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:31,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65358525] [2021-03-24 11:06:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:31,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:31,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:31,170 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:06:31,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:06:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:31,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65358525] [2021-03-24 11:06:31,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:31,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:06:31,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769397053] [2021-03-24 11:06:31,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:06:31,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:31,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:06:31,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:06:31,194 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 11:06:31,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 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) [2021-03-24 11:06:31,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:31,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 11:06:31,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:31,266 INFO L129 PetriNetUnfolder]: 38/106 cut-off events. [2021-03-24 11:06:31,266 INFO L130 PetriNetUnfolder]: For 24/96 co-relation queries the response was YES. [2021-03-24 11:06:31,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 106 events. 38/106 cut-off events. For 24/96 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 366 event pairs, 5 based on Foata normal form. 2/98 useless extension candidates. Maximal degree in co-relation 200. Up to 43 conditions per place. [2021-03-24 11:06:31,269 INFO L132 encePairwiseOnDemand]: 123/131 looper letters, 11 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2021-03-24 11:06:31,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 151 flow [2021-03-24 11:06:31,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:06:31,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:06:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-03-24 11:06:31,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8320610687022901 [2021-03-24 11:06:31,275 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-03-24 11:06:31,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-03-24 11:06:31,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:31,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-03-24 11:06:31,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 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) [2021-03-24 11:06:31,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 11:06:31,281 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 11:06:31,281 INFO L185 Difference]: Start difference. First operand has 37 places, 25 transitions, 66 flow. Second operand 5 states and 545 transitions. [2021-03-24 11:06:31,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 151 flow [2021-03-24 11:06:31,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 141 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:06:31,283 INFO L241 Difference]: Finished difference. Result has 42 places, 34 transitions, 144 flow [2021-03-24 11:06:31,283 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2021-03-24 11:06:31,283 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2021-03-24 11:06:31,283 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 144 flow [2021-03-24 11:06:31,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 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) [2021-03-24 11:06:31,284 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:31,284 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:31,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:06:31,284 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:31,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1579284653, now seen corresponding path program 1 times [2021-03-24 11:06:31,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:31,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271240673] [2021-03-24 11:06:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:31,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:31,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:31,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:31,387 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:06:31,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:06:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:31,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271240673] [2021-03-24 11:06:31,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:31,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:06:31,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497534157] [2021-03-24 11:06:31,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:06:31,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:31,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:06:31,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:06:31,405 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 11:06:31,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2021-03-24 11:06:31,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:31,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 11:06:31,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:31,459 INFO L129 PetriNetUnfolder]: 28/99 cut-off events. [2021-03-24 11:06:31,459 INFO L130 PetriNetUnfolder]: For 161/712 co-relation queries the response was YES. [2021-03-24 11:06:31,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 99 events. 28/99 cut-off events. For 161/712 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 377 event pairs, 4 based on Foata normal form. 5/99 useless extension candidates. Maximal degree in co-relation 294. Up to 44 conditions per place. [2021-03-24 11:06:31,461 INFO L132 encePairwiseOnDemand]: 125/131 looper letters, 8 selfloop transitions, 7 changer transitions 10/41 dead transitions. [2021-03-24 11:06:31,461 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 237 flow [2021-03-24 11:06:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:06:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:06:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2021-03-24 11:06:31,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8213740458015267 [2021-03-24 11:06:31,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2021-03-24 11:06:31,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2021-03-24 11:06:31,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:31,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2021-03-24 11:06:31,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 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) [2021-03-24 11:06:31,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 11:06:31,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 11:06:31,468 INFO L185 Difference]: Start difference. First operand has 42 places, 34 transitions, 144 flow. Second operand 5 states and 538 transitions. [2021-03-24 11:06:31,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 237 flow [2021-03-24 11:06:31,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 231 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:06:31,471 INFO L241 Difference]: Finished difference. Result has 47 places, 29 transitions, 138 flow [2021-03-24 11:06:31,471 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2021-03-24 11:06:31,472 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2021-03-24 11:06:31,472 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 138 flow [2021-03-24 11:06:31,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2021-03-24 11:06:31,472 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:31,472 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:31,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:06:31,472 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:31,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:31,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1016876851, now seen corresponding path program 1 times [2021-03-24 11:06:31,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:31,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299398823] [2021-03-24 11:06:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:31,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:31,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:31,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299398823] [2021-03-24 11:06:31,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:31,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:06:31,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387215381] [2021-03-24 11:06:31,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:06:31,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:31,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:06:31,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:06:31,548 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 131 [2021-03-24 11:06:31,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2021-03-24 11:06:31,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:31,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 131 [2021-03-24 11:06:31,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:31,560 INFO L129 PetriNetUnfolder]: 9/49 cut-off events. [2021-03-24 11:06:31,561 INFO L130 PetriNetUnfolder]: For 144/191 co-relation queries the response was YES. [2021-03-24 11:06:31,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 49 events. 9/49 cut-off events. For 144/191 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 6 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 125. Up to 22 conditions per place. [2021-03-24 11:06:31,562 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 1 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2021-03-24 11:06:31,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 29 transitions, 148 flow [2021-03-24 11:06:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:06:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:06:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2021-03-24 11:06:31,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9185750636132316 [2021-03-24 11:06:31,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2021-03-24 11:06:31,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2021-03-24 11:06:31,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:31,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2021-03-24 11:06:31,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2021-03-24 11:06:31,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2021-03-24 11:06:31,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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) [2021-03-24 11:06:31,566 INFO L185 Difference]: Start difference. First operand has 47 places, 29 transitions, 138 flow. Second operand 3 states and 361 transitions. [2021-03-24 11:06:31,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 29 transitions, 148 flow [2021-03-24 11:06:31,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 123 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-24 11:06:31,569 INFO L241 Difference]: Finished difference. Result has 44 places, 29 transitions, 127 flow [2021-03-24 11:06:31,569 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2021-03-24 11:06:31,569 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2021-03-24 11:06:31,569 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 127 flow [2021-03-24 11:06:31,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2021-03-24 11:06:31,570 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:31,570 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:31,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:06:31,570 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:31,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:31,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1712666475, now seen corresponding path program 1 times [2021-03-24 11:06:31,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:31,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995070474] [2021-03-24 11:06:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:31,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:31,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:31,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:31,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995070474] [2021-03-24 11:06:31,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:31,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:06:31,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415966952] [2021-03-24 11:06:31,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:06:31,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:31,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:06:31,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:06:31,618 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2021-03-24 11:06:31,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 11:06:31,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:31,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2021-03-24 11:06:31,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:31,638 INFO L129 PetriNetUnfolder]: 17/76 cut-off events. [2021-03-24 11:06:31,639 INFO L130 PetriNetUnfolder]: For 180/279 co-relation queries the response was YES. [2021-03-24 11:06:31,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 76 events. 17/76 cut-off events. For 180/279 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 249 event pairs, 8 based on Foata normal form. 6/78 useless extension candidates. Maximal degree in co-relation 200. Up to 35 conditions per place. [2021-03-24 11:06:31,639 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 4 selfloop transitions, 6 changer transitions 3/34 dead transitions. [2021-03-24 11:06:31,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 34 transitions, 189 flow [2021-03-24 11:06:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:06:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:06:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2021-03-24 11:06:31,641 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8759541984732825 [2021-03-24 11:06:31,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2021-03-24 11:06:31,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2021-03-24 11:06:31,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:31,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2021-03-24 11:06:31,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 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) [2021-03-24 11:06:31,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 11:06:31,644 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 11:06:31,644 INFO L185 Difference]: Start difference. First operand has 44 places, 29 transitions, 127 flow. Second operand 4 states and 459 transitions. [2021-03-24 11:06:31,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 34 transitions, 189 flow [2021-03-24 11:06:31,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:06:31,646 INFO L241 Difference]: Finished difference. Result has 47 places, 29 transitions, 143 flow [2021-03-24 11:06:31,646 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2021-03-24 11:06:31,646 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2021-03-24 11:06:31,646 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 143 flow [2021-03-24 11:06:31,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-24 11:06:31,647 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:31,647 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:31,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:06:31,647 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:31,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:31,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1489452814, now seen corresponding path program 1 times [2021-03-24 11:06:31,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:31,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937155924] [2021-03-24 11:06:31,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:31,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:31,685 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:06:31,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:06:31,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:31,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:31,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937155924] [2021-03-24 11:06:31,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:31,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:06:31,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323757046] [2021-03-24 11:06:31,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:06:31,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:31,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:06:31,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:06:31,694 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 11:06:31,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 29 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-24 11:06:31,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:31,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 11:06:31,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:31,790 INFO L129 PetriNetUnfolder]: 198/371 cut-off events. [2021-03-24 11:06:31,790 INFO L130 PetriNetUnfolder]: For 499/552 co-relation queries the response was YES. [2021-03-24 11:06:31,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 371 events. 198/371 cut-off events. For 499/552 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 1899 event pairs, 107 based on Foata normal form. 32/353 useless extension candidates. Maximal degree in co-relation 938. Up to 231 conditions per place. [2021-03-24 11:06:31,795 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 10 selfloop transitions, 10 changer transitions 0/42 dead transitions. [2021-03-24 11:06:31,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 209 flow [2021-03-24 11:06:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:06:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:06:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2021-03-24 11:06:31,797 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8274809160305343 [2021-03-24 11:06:31,798 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2021-03-24 11:06:31,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2021-03-24 11:06:31,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:31,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2021-03-24 11:06:31,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 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) [2021-03-24 11:06:31,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 11:06:31,801 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 11:06:31,801 INFO L185 Difference]: Start difference. First operand has 47 places, 29 transitions, 143 flow. Second operand 5 states and 542 transitions. [2021-03-24 11:06:31,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 209 flow [2021-03-24 11:06:31,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 191 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 11:06:31,807 INFO L241 Difference]: Finished difference. Result has 50 places, 38 transitions, 200 flow [2021-03-24 11:06:31,807 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2021-03-24 11:06:31,807 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2021-03-24 11:06:31,807 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 200 flow [2021-03-24 11:06:31,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-24 11:06:31,808 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:31,808 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:31,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:06:31,808 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:31,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1567585307, now seen corresponding path program 1 times [2021-03-24 11:06:31,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:31,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420042141] [2021-03-24 11:06:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:31,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:31,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:31,876 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:06:31,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:06:31,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:31,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:31,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:31,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420042141] [2021-03-24 11:06:31,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:31,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:06:31,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679925278] [2021-03-24 11:06:31,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:06:31,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:31,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:06:31,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:06:31,889 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 11:06:31,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2021-03-24 11:06:31,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:31,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 11:06:31,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:31,989 INFO L129 PetriNetUnfolder]: 163/337 cut-off events. [2021-03-24 11:06:31,989 INFO L130 PetriNetUnfolder]: For 520/1196 co-relation queries the response was YES. [2021-03-24 11:06:31,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 337 events. 163/337 cut-off events. For 520/1196 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 1711 event pairs, 39 based on Foata normal form. 90/394 useless extension candidates. Maximal degree in co-relation 1278. Up to 250 conditions per place. [2021-03-24 11:06:31,993 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 10 selfloop transitions, 19 changer transitions 0/51 dead transitions. [2021-03-24 11:06:31,993 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 334 flow [2021-03-24 11:06:31,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:06:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:06:31,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 759 transitions. [2021-03-24 11:06:31,996 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8276990185387132 [2021-03-24 11:06:31,996 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 759 transitions. [2021-03-24 11:06:31,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 759 transitions. [2021-03-24 11:06:31,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:31,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 759 transitions. [2021-03-24 11:06:31,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 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) [2021-03-24 11:06:31,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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) [2021-03-24 11:06:31,999 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 131.0) internal successors, (1048), 8 states have internal predecessors, (1048), 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) [2021-03-24 11:06:31,999 INFO L185 Difference]: Start difference. First operand has 50 places, 38 transitions, 200 flow. Second operand 7 states and 759 transitions. [2021-03-24 11:06:32,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 334 flow [2021-03-24 11:06:32,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 329 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:06:32,004 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 329 flow [2021-03-24 11:06:32,004 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2021-03-24 11:06:32,004 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2021-03-24 11:06:32,004 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 329 flow [2021-03-24 11:06:32,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2021-03-24 11:06:32,004 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:32,005 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:32,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:06:32,005 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:32,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:32,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1350342536, now seen corresponding path program 1 times [2021-03-24 11:06:32,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:32,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786050981] [2021-03-24 11:06:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:32,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:32,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,075 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:06:32,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:06:32,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:32,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786050981] [2021-03-24 11:06:32,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:32,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:06:32,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828960466] [2021-03-24 11:06:32,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:06:32,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:06:32,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:06:32,089 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 11:06:32,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 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) [2021-03-24 11:06:32,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:32,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 11:06:32,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:32,192 INFO L129 PetriNetUnfolder]: 123/279 cut-off events. [2021-03-24 11:06:32,192 INFO L130 PetriNetUnfolder]: For 1095/2423 co-relation queries the response was YES. [2021-03-24 11:06:32,194 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 279 events. 123/279 cut-off events. For 1095/2423 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1370 event pairs, 7 based on Foata normal form. 142/395 useless extension candidates. Maximal degree in co-relation 1477. Up to 226 conditions per place. [2021-03-24 11:06:32,196 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 6 selfloop transitions, 28 changer transitions 4/60 dead transitions. [2021-03-24 11:06:32,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 531 flow [2021-03-24 11:06:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:06:32,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:06:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 976 transitions. [2021-03-24 11:06:32,198 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8278201865988125 [2021-03-24 11:06:32,198 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 976 transitions. [2021-03-24 11:06:32,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 976 transitions. [2021-03-24 11:06:32,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:32,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 976 transitions. [2021-03-24 11:06:32,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.44444444444444) internal successors, (976), 9 states have internal predecessors, (976), 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) [2021-03-24 11:06:32,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2021-03-24 11:06:32,203 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 131.0) internal successors, (1310), 10 states have internal predecessors, (1310), 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) [2021-03-24 11:06:32,203 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 329 flow. Second operand 9 states and 976 transitions. [2021-03-24 11:06:32,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 531 flow [2021-03-24 11:06:32,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 481 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-24 11:06:32,210 INFO L241 Difference]: Finished difference. Result has 66 places, 56 transitions, 457 flow [2021-03-24 11:06:32,211 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=457, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2021-03-24 11:06:32,211 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2021-03-24 11:06:32,211 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 457 flow [2021-03-24 11:06:32,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 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) [2021-03-24 11:06:32,211 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:32,211 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:32,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:06:32,212 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:32,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:32,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1671696489, now seen corresponding path program 1 times [2021-03-24 11:06:32,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:32,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883363371] [2021-03-24 11:06:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:32,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:32,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,256 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:06:32,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:06:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:32,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883363371] [2021-03-24 11:06:32,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:32,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:06:32,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130094411] [2021-03-24 11:06:32,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:06:32,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:32,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:06:32,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:06:32,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 11:06:32,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2021-03-24 11:06:32,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:32,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 11:06:32,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:32,339 INFO L129 PetriNetUnfolder]: 178/405 cut-off events. [2021-03-24 11:06:32,339 INFO L130 PetriNetUnfolder]: For 2185/2484 co-relation queries the response was YES. [2021-03-24 11:06:32,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 405 events. 178/405 cut-off events. For 2185/2484 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 2343 event pairs, 6 based on Foata normal form. 10/377 useless extension candidates. Maximal degree in co-relation 2076. Up to 252 conditions per place. [2021-03-24 11:06:32,343 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 7 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2021-03-24 11:06:32,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 61 transitions, 520 flow [2021-03-24 11:06:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:06:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:06:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 536 transitions. [2021-03-24 11:06:32,345 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8183206106870229 [2021-03-24 11:06:32,345 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 536 transitions. [2021-03-24 11:06:32,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 536 transitions. [2021-03-24 11:06:32,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:32,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 536 transitions. [2021-03-24 11:06:32,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 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) [2021-03-24 11:06:32,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 11:06:32,348 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 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) [2021-03-24 11:06:32,348 INFO L185 Difference]: Start difference. First operand has 66 places, 56 transitions, 457 flow. Second operand 5 states and 536 transitions. [2021-03-24 11:06:32,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 61 transitions, 520 flow [2021-03-24 11:06:32,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 61 transitions, 423 flow, removed 34 selfloop flow, removed 4 redundant places. [2021-03-24 11:06:32,361 INFO L241 Difference]: Finished difference. Result has 68 places, 61 transitions, 431 flow [2021-03-24 11:06:32,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2021-03-24 11:06:32,361 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2021-03-24 11:06:32,361 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 431 flow [2021-03-24 11:06:32,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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) [2021-03-24 11:06:32,361 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:32,361 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:32,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 11:06:32,362 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:32,363 INFO L82 PathProgramCache]: Analyzing trace with hash -472410509, now seen corresponding path program 2 times [2021-03-24 11:06:32,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:32,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151770226] [2021-03-24 11:06:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:32,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:32,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,416 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:06:32,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:06:32,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:32,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151770226] [2021-03-24 11:06:32,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:32,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 11:06:32,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264807676] [2021-03-24 11:06:32,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:06:32,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:32,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:06:32,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:06:32,435 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 131 [2021-03-24 11:06:32,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 431 flow. Second operand has 7 states, 7 states have (on average 104.85714285714286) internal successors, (734), 7 states have internal predecessors, (734), 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) [2021-03-24 11:06:32,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:32,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 131 [2021-03-24 11:06:32,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:32,560 INFO L129 PetriNetUnfolder]: 166/376 cut-off events. [2021-03-24 11:06:32,560 INFO L130 PetriNetUnfolder]: For 1112/1845 co-relation queries the response was YES. [2021-03-24 11:06:32,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 376 events. 166/376 cut-off events. For 1112/1845 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 2196 event pairs, 0 based on Foata normal form. 199/538 useless extension candidates. Maximal degree in co-relation 1636. Up to 110 conditions per place. [2021-03-24 11:06:32,564 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 2 selfloop transitions, 33 changer transitions 4/66 dead transitions. [2021-03-24 11:06:32,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 565 flow [2021-03-24 11:06:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 11:06:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 11:06:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1185 transitions. [2021-03-24 11:06:32,567 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223455933379598 [2021-03-24 11:06:32,567 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1185 transitions. [2021-03-24 11:06:32,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1185 transitions. [2021-03-24 11:06:32,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:32,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1185 transitions. [2021-03-24 11:06:32,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.72727272727273) internal successors, (1185), 11 states have internal predecessors, (1185), 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) [2021-03-24 11:06:32,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 131.0) internal successors, (1572), 12 states have internal predecessors, (1572), 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) [2021-03-24 11:06:32,574 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 131.0) internal successors, (1572), 12 states have internal predecessors, (1572), 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) [2021-03-24 11:06:32,574 INFO L185 Difference]: Start difference. First operand has 68 places, 61 transitions, 431 flow. Second operand 11 states and 1185 transitions. [2021-03-24 11:06:32,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 565 flow [2021-03-24 11:06:32,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 548 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 11:06:32,582 INFO L241 Difference]: Finished difference. Result has 79 places, 62 transitions, 508 flow [2021-03-24 11:06:32,582 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=508, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2021-03-24 11:06:32,583 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2021-03-24 11:06:32,583 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 508 flow [2021-03-24 11:06:32,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 104.85714285714286) internal successors, (734), 7 states have internal predecessors, (734), 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) [2021-03-24 11:06:32,583 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:32,583 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:32,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 11:06:32,584 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:32,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1220372458, now seen corresponding path program 1 times [2021-03-24 11:06:32,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:32,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785793694] [2021-03-24 11:06:32,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:32,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:32,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:32,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:32,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785793694] [2021-03-24 11:06:32,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:32,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:06:32,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687369051] [2021-03-24 11:06:32,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:06:32,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:32,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:06:32,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:06:32,621 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2021-03-24 11:06:32,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 508 flow. Second operand has 4 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) [2021-03-24 11:06:32,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:32,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2021-03-24 11:06:32,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:32,670 INFO L129 PetriNetUnfolder]: 210/469 cut-off events. [2021-03-24 11:06:32,671 INFO L130 PetriNetUnfolder]: For 1557/1772 co-relation queries the response was YES. [2021-03-24 11:06:32,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 469 events. 210/469 cut-off events. For 1557/1772 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 2961 event pairs, 0 based on Foata normal form. 7/427 useless extension candidates. Maximal degree in co-relation 2056. Up to 150 conditions per place. [2021-03-24 11:06:32,673 INFO L132 encePairwiseOnDemand]: 128/131 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2021-03-24 11:06:32,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 63 transitions, 539 flow [2021-03-24 11:06:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:06:32,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:06:32,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2021-03-24 11:06:32,675 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8702290076335878 [2021-03-24 11:06:32,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2021-03-24 11:06:32,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2021-03-24 11:06:32,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:32,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2021-03-24 11:06:32,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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) [2021-03-24 11:06:32,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 11:06:32,677 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-24 11:06:32,677 INFO L185 Difference]: Start difference. First operand has 79 places, 62 transitions, 508 flow. Second operand 4 states and 456 transitions. [2021-03-24 11:06:32,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 63 transitions, 539 flow [2021-03-24 11:06:32,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 428 flow, removed 25 selfloop flow, removed 10 redundant places. [2021-03-24 11:06:32,688 INFO L241 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2021-03-24 11:06:32,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2021-03-24 11:06:32,689 INFO L343 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2021-03-24 11:06:32,689 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2021-03-24 11:06:32,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 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) [2021-03-24 11:06:32,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 11:06:32,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:06:32 BasicIcfg [2021-03-24 11:06:32,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:06:32,694 INFO L168 Benchmark]: Toolchain (without parser) took 4269.27 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 309.1 MB in the beginning and 175.0 MB in the end (delta: 134.0 MB). Peak memory consumption was 205.3 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:32,696 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 346.0 MB. Free memory was 327.6 MB in the beginning and 327.5 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:06:32,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 458.83 ms. Allocated memory is still 346.0 MB. Free memory was 308.9 MB in the beginning and 309.3 MB in the end (delta: -373.1 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:32,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.08 ms. Allocated memory is still 346.0 MB. Free memory was 309.3 MB in the beginning and 307.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:32,700 INFO L168 Benchmark]: Boogie Preprocessor took 20.62 ms. Allocated memory is still 346.0 MB. Free memory was 307.2 MB in the beginning and 306.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:32,700 INFO L168 Benchmark]: RCFGBuilder took 437.12 ms. Allocated memory is still 346.0 MB. Free memory was 306.1 MB in the beginning and 279.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:32,701 INFO L168 Benchmark]: TraceAbstraction took 3314.55 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 279.9 MB in the beginning and 175.0 MB in the end (delta: 104.9 MB). Peak memory consumption was 176.2 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:32,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 346.0 MB. Free memory was 327.6 MB in the beginning and 327.5 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 458.83 ms. Allocated memory is still 346.0 MB. Free memory was 308.9 MB in the beginning and 309.3 MB in the end (delta: -373.1 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.08 ms. Allocated memory is still 346.0 MB. Free memory was 309.3 MB in the beginning and 307.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.62 ms. Allocated memory is still 346.0 MB. Free memory was 307.2 MB in the beginning and 306.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 437.12 ms. Allocated memory is still 346.0 MB. Free memory was 306.1 MB in the beginning and 279.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3314.55 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 279.9 MB in the beginning and 175.0 MB in the end (delta: 104.9 MB). Peak memory consumption was 176.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1233.7ms, 81 PlacesBefore, 38 PlacesAfterwards, 69 TransitionsBefore, 25 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 4 FixpointIterations, 15 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1387 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 945, positive: 911, positive conditional: 0, positive unconditional: 911, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 621, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 621, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 945, positive: 310, positive conditional: 0, positive unconditional: 310, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 621, unknown conditional: 0, unknown unconditional: 621] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3221.2ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 933.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1303.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 54 SDslu, 41 SDs, 0 SdLazy, 229 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 158.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 165.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=508occurred in iteration=10, InterpolantAutomatonStates: 61, 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: 32.5ms SsaConstructionTime, 178.3ms SatisfiabilityAnalysisTime, 564.0ms InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 203 ConstructedInterpolants, 0 QuantifiedInterpolants, 657 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...