/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/safe016_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:03:35,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:03:35,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:03:35,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:03:35,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:03:35,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:03:35,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:03:35,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:03:35,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:03:35,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:03:35,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:03:35,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:03:35,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:03:35,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:03:35,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:03:35,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:03:35,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:03:35,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:03:35,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:03:35,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:03:35,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:03:35,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:03:35,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:03:35,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:03:35,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:03:35,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:03:35,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:03:35,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:03:35,574 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 11:03:35,608 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:03:35,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:03:35,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:03:35,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:03:35,612 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:03:35,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:03:35,612 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:03:35,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:03:35,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:03:35,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:03:35,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:03:35,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:03:35,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:03:35,614 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:03:35,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:03:35,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:03:35,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:03:35,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:03:35,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:03:35,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:03:35,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:03:35,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:03:35,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:03:35,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:03:35,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:03:35,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:03:35,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:03:35,617 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:03:35,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:03:35,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:03:35,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:03:35,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:03:35,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:03:35,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:03:35,955 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:03:35,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-03-24 11:03:36,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a02d87ad/129d4b901fd946bca4d906953f2ff409/FLAG961f55dda [2021-03-24 11:03:36,468 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:03:36,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc.i [2021-03-24 11:03:36,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a02d87ad/129d4b901fd946bca4d906953f2ff409/FLAG961f55dda [2021-03-24 11:03:36,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a02d87ad/129d4b901fd946bca4d906953f2ff409 [2021-03-24 11:03:36,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:03:36,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:03:36,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:03:36,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:03:36,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:03:36,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:03:36" (1/1) ... [2021-03-24 11:03:36,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a48cc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:36, skipping insertion in model container [2021-03-24 11:03:36,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:03:36" (1/1) ... [2021-03-24 11:03:36,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:03:36,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:03:36,968 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/safe016_pso.oepc.i[950,963] [2021-03-24 11:03:37,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:03:37,079 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:03:37,088 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/safe016_pso.oepc.i[950,963] [2021-03-24 11:03:37,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:03:37,171 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:03:37,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37 WrapperNode [2021-03-24 11:03:37,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:03:37,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:03:37,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:03:37,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:03:37,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (1/1) ... [2021-03-24 11:03:37,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (1/1) ... [2021-03-24 11:03:37,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:03:37,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:03:37,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:03:37,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:03:37,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (1/1) ... [2021-03-24 11:03:37,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (1/1) ... [2021-03-24 11:03:37,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (1/1) ... [2021-03-24 11:03:37,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (1/1) ... [2021-03-24 11:03:37,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (1/1) ... [2021-03-24 11:03:37,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (1/1) ... [2021-03-24 11:03:37,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (1/1) ... [2021-03-24 11:03:37,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:03:37,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:03:37,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:03:37,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:03:37,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (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 11:03:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:03:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:03:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:03:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:03:37,282 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:03:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:03:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:03:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:03:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:03:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:03:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-24 11:03:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-24 11:03:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:03:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:03:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:03:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:03:37,285 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 11:03:37,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:03:37,693 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:03:37,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:03:37 BoogieIcfgContainer [2021-03-24 11:03:37,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:03:37,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:03:37,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:03:37,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:03:37,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:03:36" (1/3) ... [2021-03-24 11:03:37,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abab138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:03:37, skipping insertion in model container [2021-03-24 11:03:37,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:37" (2/3) ... [2021-03-24 11:03:37,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3abab138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:03:37, skipping insertion in model container [2021-03-24 11:03:37,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:03:37" (3/3) ... [2021-03-24 11:03:37,702 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2021-03-24 11:03:37,710 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:03:37,714 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:03:37,715 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:03:37,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,755 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,755 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,756 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,756 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,756 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,756 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,757 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,758 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,758 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,758 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,759 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,759 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,759 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,760 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,765 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,765 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,766 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,766 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,766 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,767 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,768 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,768 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,768 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,768 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,769 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,769 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,769 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,769 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,769 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,770 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,770 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,770 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,771 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,772 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,772 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,772 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,776 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,776 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,776 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,776 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,778 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,778 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,778 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,780 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,780 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:37,782 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:03:37,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 11:03:37,810 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:03:37,810 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:03:37,811 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:03:37,811 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:03:37,811 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:03:37,811 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:03:37,811 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:03:37,811 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:03:37,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2021-03-24 11:03:37,862 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-03-24 11:03:37,862 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:03:37,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 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. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-24 11:03:37,865 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 85 transitions, 190 flow [2021-03-24 11:03:37,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 67 transitions, 146 flow [2021-03-24 11:03:37,870 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:03:37,878 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 67 transitions, 146 flow [2021-03-24 11:03:37,880 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 67 transitions, 146 flow [2021-03-24 11:03:37,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 67 transitions, 146 flow [2021-03-24 11:03:37,896 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-03-24 11:03:37,897 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:03:37,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 1/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-03-24 11:03:37,900 INFO L142 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-24 11:03:39,855 INFO L154 LiptonReduction]: Checked pairs total: 1383 [2021-03-24 11:03:39,855 INFO L156 LiptonReduction]: Total number of compositions: 44 [2021-03-24 11:03:39,857 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1988 [2021-03-24 11:03:39,866 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-03-24 11:03:39,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:03:39,867 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:39,867 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:39,867 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:39,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:39,872 INFO L82 PathProgramCache]: Analyzing trace with hash -592752111, now seen corresponding path program 1 times [2021-03-24 11:03:39,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:39,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254969486] [2021-03-24 11:03:39,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:40,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:40,144 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:40,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:40,155 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 11:03:40,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254969486] [2021-03-24 11:03:40,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:40,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:03:40,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892443977] [2021-03-24 11:03:40,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:03:40,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:40,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:03:40,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:03:40,179 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 129 [2021-03-24 11:03:40,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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 11:03:40,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:40,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 129 [2021-03-24 11:03:40,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:40,274 INFO L129 PetriNetUnfolder]: 117/286 cut-off events. [2021-03-24 11:03:40,275 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:03:40,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 286 events. 117/286 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1486 event pairs, 57 based on Foata normal form. 14/282 useless extension candidates. Maximal degree in co-relation 492. Up to 129 conditions per place. [2021-03-24 11:03:40,280 INFO L132 encePairwiseOnDemand]: 121/129 looper letters, 11 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2021-03-24 11:03:40,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 32 transitions, 112 flow [2021-03-24 11:03:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:03:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:03:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2021-03-24 11:03:40,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8294573643410853 [2021-03-24 11:03:40,291 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2021-03-24 11:03:40,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2021-03-24 11:03:40,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:40,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2021-03-24 11:03:40,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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 11:03:40,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 11:03:40,309 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 11:03:40,310 INFO L185 Difference]: Start difference. First operand has 36 places, 23 transitions, 58 flow. Second operand 4 states and 428 transitions. [2021-03-24 11:03:40,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 32 transitions, 112 flow [2021-03-24 11:03:40,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 11:03:40,314 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 106 flow [2021-03-24 11:03:40,316 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2021-03-24 11:03:40,316 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2021-03-24 11:03:40,316 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 106 flow [2021-03-24 11:03:40,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 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 11:03:40,317 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:40,317 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:40,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:03:40,317 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:40,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:40,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1195447099, now seen corresponding path program 1 times [2021-03-24 11:03:40,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:40,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844879044] [2021-03-24 11:03:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:40,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:40,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:40,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:40,420 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 11:03:40,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844879044] [2021-03-24 11:03:40,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:40,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:03:40,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095746127] [2021-03-24 11:03:40,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:03:40,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:40,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:03:40,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:03:40,425 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-24 11:03:40,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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 11:03:40,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:40,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-24 11:03:40,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:40,475 INFO L129 PetriNetUnfolder]: 86/253 cut-off events. [2021-03-24 11:03:40,476 INFO L130 PetriNetUnfolder]: For 185/320 co-relation queries the response was YES. [2021-03-24 11:03:40,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 253 events. 86/253 cut-off events. For 185/320 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1403 event pairs, 33 based on Foata normal form. 17/250 useless extension candidates. Maximal degree in co-relation 609. Up to 108 conditions per place. [2021-03-24 11:03:40,479 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 8 selfloop transitions, 5 changer transitions 4/37 dead transitions. [2021-03-24 11:03:40,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 186 flow [2021-03-24 11:03:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:03:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:03:40,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2021-03-24 11:03:40,482 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8701550387596899 [2021-03-24 11:03:40,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2021-03-24 11:03:40,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2021-03-24 11:03:40,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:40,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2021-03-24 11:03:40,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:40,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 11:03:40,486 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 11:03:40,487 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 106 flow. Second operand 4 states and 449 transitions. [2021-03-24 11:03:40,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 186 flow [2021-03-24 11:03:40,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 183 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:03:40,490 INFO L241 Difference]: Finished difference. Result has 42 places, 31 transitions, 149 flow [2021-03-24 11:03:40,490 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2021-03-24 11:03:40,490 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2021-03-24 11:03:40,491 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 149 flow [2021-03-24 11:03:40,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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 11:03:40,491 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:40,491 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 11:03:40,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:03:40,492 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:40,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:40,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1589698779, now seen corresponding path program 1 times [2021-03-24 11:03:40,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:40,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436536621] [2021-03-24 11:03:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:40,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:40,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:40,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:40,593 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 11:03:40,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436536621] [2021-03-24 11:03:40,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:40,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:03:40,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782233799] [2021-03-24 11:03:40,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:03:40,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:40,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:03:40,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:03:40,599 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-03-24 11:03:40,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 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 11:03:40,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:40,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-03-24 11:03:40,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:40,668 INFO L129 PetriNetUnfolder]: 55/238 cut-off events. [2021-03-24 11:03:40,669 INFO L130 PetriNetUnfolder]: For 423/643 co-relation queries the response was YES. [2021-03-24 11:03:40,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 238 events. 55/238 cut-off events. For 423/643 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1484 event pairs, 29 based on Foata normal form. 12/232 useless extension candidates. Maximal degree in co-relation 630. Up to 89 conditions per place. [2021-03-24 11:03:40,676 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 6 selfloop transitions, 5 changer transitions 3/34 dead transitions. [2021-03-24 11:03:40,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 34 transitions, 199 flow [2021-03-24 11:03:40,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:03:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:03:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2021-03-24 11:03:40,678 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8635658914728682 [2021-03-24 11:03:40,679 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2021-03-24 11:03:40,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2021-03-24 11:03:40,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:40,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2021-03-24 11:03:40,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 11:03:40,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 11:03:40,682 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 11:03:40,682 INFO L185 Difference]: Start difference. First operand has 42 places, 31 transitions, 149 flow. Second operand 5 states and 557 transitions. [2021-03-24 11:03:40,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 34 transitions, 199 flow [2021-03-24 11:03:40,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:03:40,687 INFO L241 Difference]: Finished difference. Result has 48 places, 31 transitions, 170 flow [2021-03-24 11:03:40,687 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2021-03-24 11:03:40,688 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2021-03-24 11:03:40,688 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 170 flow [2021-03-24 11:03:40,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 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 11:03:40,688 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:40,688 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:40,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:03:40,689 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:40,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1576785891, now seen corresponding path program 1 times [2021-03-24 11:03:40,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:40,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197090209] [2021-03-24 11:03:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:40,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:40,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:40,770 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:40,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:40,779 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 11:03:40,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197090209] [2021-03-24 11:03:40,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:40,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:03:40,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483466067] [2021-03-24 11:03:40,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:03:40,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:40,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:03:40,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:03:40,782 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 129 [2021-03-24 11:03:40,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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 11:03:40,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:40,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 129 [2021-03-24 11:03:40,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:40,839 INFO L129 PetriNetUnfolder]: 52/231 cut-off events. [2021-03-24 11:03:40,839 INFO L130 PetriNetUnfolder]: For 783/1341 co-relation queries the response was YES. [2021-03-24 11:03:40,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 231 events. 52/231 cut-off events. For 783/1341 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1412 event pairs, 4 based on Foata normal form. 9/231 useless extension candidates. Maximal degree in co-relation 753. Up to 80 conditions per place. [2021-03-24 11:03:40,842 INFO L132 encePairwiseOnDemand]: 120/129 looper letters, 13 selfloop transitions, 10 changer transitions 11/48 dead transitions. [2021-03-24 11:03:40,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 377 flow [2021-03-24 11:03:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:03:40,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:03:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2021-03-24 11:03:40,845 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-03-24 11:03:40,845 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 430 transitions. [2021-03-24 11:03:40,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 430 transitions. [2021-03-24 11:03:40,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:40,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 430 transitions. [2021-03-24 11:03:40,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 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 11:03:40,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 11:03:40,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 11:03:40,848 INFO L185 Difference]: Start difference. First operand has 48 places, 31 transitions, 170 flow. Second operand 4 states and 430 transitions. [2021-03-24 11:03:40,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 377 flow [2021-03-24 11:03:40,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 358 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 11:03:40,854 INFO L241 Difference]: Finished difference. Result has 51 places, 33 transitions, 222 flow [2021-03-24 11:03:40,854 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2021-03-24 11:03:40,854 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2021-03-24 11:03:40,854 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 222 flow [2021-03-24 11:03:40,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 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 11:03:40,855 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:40,855 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:40,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:03:40,855 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:40,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:40,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1634785199, now seen corresponding path program 1 times [2021-03-24 11:03:40,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:40,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018527900] [2021-03-24 11:03:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:40,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:40,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:40,914 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:40,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:40,926 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 11:03:40,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018527900] [2021-03-24 11:03:40,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:40,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:03:40,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070296800] [2021-03-24 11:03:40,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:03:40,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:40,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:03:40,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:03:40,931 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 129 [2021-03-24 11:03:40,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 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 11:03:40,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:40,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 129 [2021-03-24 11:03:40,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:40,965 INFO L129 PetriNetUnfolder]: 21/108 cut-off events. [2021-03-24 11:03:40,965 INFO L130 PetriNetUnfolder]: For 381/475 co-relation queries the response was YES. [2021-03-24 11:03:40,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 108 events. 21/108 cut-off events. For 381/475 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 443 event pairs, 2 based on Foata normal form. 5/110 useless extension candidates. Maximal degree in co-relation 425. Up to 39 conditions per place. [2021-03-24 11:03:40,968 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 15 selfloop transitions, 12 changer transitions 1/42 dead transitions. [2021-03-24 11:03:40,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 359 flow [2021-03-24 11:03:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:03:40,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:03:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2021-03-24 11:03:40,970 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8255813953488372 [2021-03-24 11:03:40,970 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 426 transitions. [2021-03-24 11:03:40,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 426 transitions. [2021-03-24 11:03:40,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:40,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 426 transitions. [2021-03-24 11:03:40,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 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 11:03:40,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 11:03:40,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 11:03:40,974 INFO L185 Difference]: Start difference. First operand has 51 places, 33 transitions, 222 flow. Second operand 4 states and 426 transitions. [2021-03-24 11:03:40,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 359 flow [2021-03-24 11:03:40,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 343 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 11:03:40,979 INFO L241 Difference]: Finished difference. Result has 54 places, 38 transitions, 316 flow [2021-03-24 11:03:40,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2021-03-24 11:03:40,980 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2021-03-24 11:03:40,980 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 316 flow [2021-03-24 11:03:40,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 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 11:03:40,981 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:40,981 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 11:03:40,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:03:40,981 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:40,982 INFO L82 PathProgramCache]: Analyzing trace with hash 49116510, now seen corresponding path program 1 times [2021-03-24 11:03:40,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:40,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203332842] [2021-03-24 11:03:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:41,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:41,034 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 11:03:41,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203332842] [2021-03-24 11:03:41,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:41,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:03:41,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397455691] [2021-03-24 11:03:41,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:03:41,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:41,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:03:41,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:03:41,038 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 129 [2021-03-24 11:03:41,038 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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 11:03:41,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:41,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 129 [2021-03-24 11:03:41,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:41,145 INFO L129 PetriNetUnfolder]: 490/899 cut-off events. [2021-03-24 11:03:41,145 INFO L130 PetriNetUnfolder]: For 781/844 co-relation queries the response was YES. [2021-03-24 11:03:41,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 899 events. 490/899 cut-off events. For 781/844 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 5687 event pairs, 241 based on Foata normal form. 81/876 useless extension candidates. Maximal degree in co-relation 2163. Up to 645 conditions per place. [2021-03-24 11:03:41,151 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 10 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2021-03-24 11:03:41,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 382 flow [2021-03-24 11:03:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:03:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:03:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2021-03-24 11:03:41,154 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8170542635658915 [2021-03-24 11:03:41,154 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2021-03-24 11:03:41,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2021-03-24 11:03:41,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:41,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2021-03-24 11:03:41,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 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 11:03:41,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 11:03:41,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 11:03:41,158 INFO L185 Difference]: Start difference. First operand has 54 places, 38 transitions, 316 flow. Second operand 5 states and 527 transitions. [2021-03-24 11:03:41,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 382 flow [2021-03-24 11:03:41,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:03:41,163 INFO L241 Difference]: Finished difference. Result has 60 places, 47 transitions, 388 flow [2021-03-24 11:03:41,163 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2021-03-24 11:03:41,164 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2021-03-24 11:03:41,164 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 388 flow [2021-03-24 11:03:41,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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 11:03:41,164 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:41,164 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 11:03:41,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:03:41,164 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:41,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:41,165 INFO L82 PathProgramCache]: Analyzing trace with hash -946841816, now seen corresponding path program 1 times [2021-03-24 11:03:41,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:41,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986464346] [2021-03-24 11:03:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:41,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,225 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:03:41,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:03:41,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:41,233 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 11:03:41,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986464346] [2021-03-24 11:03:41,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:41,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:03:41,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13161499] [2021-03-24 11:03:41,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:03:41,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:41,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:03:41,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:03:41,235 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 129 [2021-03-24 11:03:41,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 388 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 11:03:41,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:41,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 129 [2021-03-24 11:03:41,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:41,354 INFO L129 PetriNetUnfolder]: 416/834 cut-off events. [2021-03-24 11:03:41,355 INFO L130 PetriNetUnfolder]: For 1523/2938 co-relation queries the response was YES. [2021-03-24 11:03:41,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3434 conditions, 834 events. 416/834 cut-off events. For 1523/2938 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 5521 event pairs, 74 based on Foata normal form. 229/991 useless extension candidates. Maximal degree in co-relation 3401. Up to 676 conditions per place. [2021-03-24 11:03:41,362 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 9 selfloop transitions, 19 changer transitions 1/60 dead transitions. [2021-03-24 11:03:41,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 522 flow [2021-03-24 11:03:41,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:03:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:03:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 738 transitions. [2021-03-24 11:03:41,364 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8172757475083057 [2021-03-24 11:03:41,364 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 738 transitions. [2021-03-24 11:03:41,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 738 transitions. [2021-03-24 11:03:41,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:41,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 738 transitions. [2021-03-24 11:03:41,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.42857142857143) internal successors, (738), 7 states have internal predecessors, (738), 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 11:03:41,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 11:03:41,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 11:03:41,368 INFO L185 Difference]: Start difference. First operand has 60 places, 47 transitions, 388 flow. Second operand 7 states and 738 transitions. [2021-03-24 11:03:41,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 522 flow [2021-03-24 11:03:41,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:03:41,375 INFO L241 Difference]: Finished difference. Result has 68 places, 56 transitions, 515 flow [2021-03-24 11:03:41,375 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2021-03-24 11:03:41,375 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2021-03-24 11:03:41,375 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 515 flow [2021-03-24 11:03:41,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 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 11:03:41,376 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:41,376 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 11:03:41,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:03:41,376 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:41,376 INFO L82 PathProgramCache]: Analyzing trace with hash 688072108, now seen corresponding path program 1 times [2021-03-24 11:03:41,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:41,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318711343] [2021-03-24 11:03:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:41,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,427 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:03:41,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:03:41,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:41,435 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 11:03:41,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318711343] [2021-03-24 11:03:41,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:41,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:03:41,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8568554] [2021-03-24 11:03:41,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:03:41,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:41,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:03:41,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:03:41,438 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 129 [2021-03-24 11:03:41,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 515 flow. Second operand has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 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 11:03:41,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:41,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 129 [2021-03-24 11:03:41,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:41,568 INFO L129 PetriNetUnfolder]: 309/687 cut-off events. [2021-03-24 11:03:41,568 INFO L130 PetriNetUnfolder]: For 3077/6568 co-relation queries the response was YES. [2021-03-24 11:03:41,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 687 events. 309/687 cut-off events. For 3077/6568 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 4698 event pairs, 13 based on Foata normal form. 334/959 useless extension candidates. Maximal degree in co-relation 3836. Up to 585 conditions per place. [2021-03-24 11:03:41,575 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 6 selfloop transitions, 27 changer transitions 5/69 dead transitions. [2021-03-24 11:03:41,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 69 transitions, 711 flow [2021-03-24 11:03:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:03:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:03:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 949 transitions. [2021-03-24 11:03:41,578 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8173987941429802 [2021-03-24 11:03:41,578 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 949 transitions. [2021-03-24 11:03:41,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 949 transitions. [2021-03-24 11:03:41,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:41,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 949 transitions. [2021-03-24 11:03:41,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.44444444444444) internal successors, (949), 9 states have internal predecessors, (949), 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 11:03:41,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 11:03:41,583 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 11:03:41,583 INFO L185 Difference]: Start difference. First operand has 68 places, 56 transitions, 515 flow. Second operand 9 states and 949 transitions. [2021-03-24 11:03:41,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 69 transitions, 711 flow [2021-03-24 11:03:41,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 69 transitions, 666 flow, removed 17 selfloop flow, removed 2 redundant places. [2021-03-24 11:03:41,596 INFO L241 Difference]: Finished difference. Result has 77 places, 64 transitions, 634 flow [2021-03-24 11:03:41,597 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=634, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2021-03-24 11:03:41,597 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2021-03-24 11:03:41,597 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 634 flow [2021-03-24 11:03:41,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 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 11:03:41,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:41,598 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 11:03:41,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:03:41,598 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:41,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:41,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1837468522, now seen corresponding path program 1 times [2021-03-24 11:03:41,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:41,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928726936] [2021-03-24 11:03:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:41,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:41,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,644 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:41,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:41,653 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 11:03:41,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928726936] [2021-03-24 11:03:41,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:41,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:03:41,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260707359] [2021-03-24 11:03:41,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:03:41,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:41,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:03:41,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:03:41,656 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 129 [2021-03-24 11:03:41,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 634 flow. Second operand has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 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 11:03:41,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:41,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 129 [2021-03-24 11:03:41,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:41,804 INFO L129 PetriNetUnfolder]: 468/1085 cut-off events. [2021-03-24 11:03:41,804 INFO L130 PetriNetUnfolder]: For 6247/7122 co-relation queries the response was YES. [2021-03-24 11:03:41,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5936 conditions, 1085 events. 468/1085 cut-off events. For 6247/7122 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 8541 event pairs, 16 based on Foata normal form. 13/989 useless extension candidates. Maximal degree in co-relation 5894. Up to 650 conditions per place. [2021-03-24 11:03:41,813 INFO L132 encePairwiseOnDemand]: 121/129 looper letters, 9 selfloop transitions, 11 changer transitions 20/76 dead transitions. [2021-03-24 11:03:41,813 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 836 flow [2021-03-24 11:03:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:03:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:03:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 535 transitions. [2021-03-24 11:03:41,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8294573643410853 [2021-03-24 11:03:41,815 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 535 transitions. [2021-03-24 11:03:41,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 535 transitions. [2021-03-24 11:03:41,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:41,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 535 transitions. [2021-03-24 11:03:41,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 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 11:03:41,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 11:03:41,820 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 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 11:03:41,820 INFO L185 Difference]: Start difference. First operand has 77 places, 64 transitions, 634 flow. Second operand 5 states and 535 transitions. [2021-03-24 11:03:41,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 836 flow [2021-03-24 11:03:41,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 749 flow, removed 29 selfloop flow, removed 4 redundant places. [2021-03-24 11:03:41,864 INFO L241 Difference]: Finished difference. Result has 78 places, 53 transitions, 458 flow [2021-03-24 11:03:41,864 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2021-03-24 11:03:41,864 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2021-03-24 11:03:41,864 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 458 flow [2021-03-24 11:03:41,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 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 11:03:41,865 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:41,865 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 11:03:41,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 11:03:41,865 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:41,866 INFO L82 PathProgramCache]: Analyzing trace with hash 210759738, now seen corresponding path program 2 times [2021-03-24 11:03:41,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:41,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921520559] [2021-03-24 11:03:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:41,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,925 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:03:41,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:03:41,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:41,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:41,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:41,935 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 11:03:41,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921520559] [2021-03-24 11:03:41,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:41,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:03:41,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178996745] [2021-03-24 11:03:41,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:03:41,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:41,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:03:41,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:03:41,938 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 129 [2021-03-24 11:03:41,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 101.85714285714286) internal successors, (713), 7 states have internal predecessors, (713), 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 11:03:41,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:41,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 129 [2021-03-24 11:03:41,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:42,048 INFO L129 PetriNetUnfolder]: 140/374 cut-off events. [2021-03-24 11:03:42,048 INFO L130 PetriNetUnfolder]: For 1302/2291 co-relation queries the response was YES. [2021-03-24 11:03:42,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 374 events. 140/374 cut-off events. For 1302/2291 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2458 event pairs, 2 based on Foata normal form. 241/577 useless extension candidates. Maximal degree in co-relation 1729. Up to 100 conditions per place. [2021-03-24 11:03:42,050 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2021-03-24 11:03:42,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 55 transitions, 538 flow [2021-03-24 11:03:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 11:03:42,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 11:03:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1145 transitions. [2021-03-24 11:03:42,054 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.806906272022551 [2021-03-24 11:03:42,054 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1145 transitions. [2021-03-24 11:03:42,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1145 transitions. [2021-03-24 11:03:42,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:42,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1145 transitions. [2021-03-24 11:03:42,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 104.0909090909091) internal successors, (1145), 11 states have internal predecessors, (1145), 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 11:03:42,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 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 11:03:42,060 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 129.0) internal successors, (1548), 12 states have internal predecessors, (1548), 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 11:03:42,060 INFO L185 Difference]: Start difference. First operand has 78 places, 53 transitions, 458 flow. Second operand 11 states and 1145 transitions. [2021-03-24 11:03:42,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 55 transitions, 538 flow [2021-03-24 11:03:42,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 55 transitions, 461 flow, removed 3 selfloop flow, removed 11 redundant places. [2021-03-24 11:03:42,068 INFO L241 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2021-03-24 11:03:42,068 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2021-03-24 11:03:42,068 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2021-03-24 11:03:42,069 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2021-03-24 11:03:42,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 101.85714285714286) internal successors, (713), 7 states have internal predecessors, (713), 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 11:03:42,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 11:03:42,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:03:42 BasicIcfg [2021-03-24 11:03:42,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:03:42,073 INFO L168 Benchmark]: Toolchain (without parser) took 5321.64 ms. Allocated memory was 255.9 MB in the beginning and 438.3 MB in the end (delta: 182.5 MB). Free memory was 234.6 MB in the beginning and 315.9 MB in the end (delta: -81.3 MB). Peak memory consumption was 100.8 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:42,073 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:03:42,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.12 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 234.6 MB in the beginning and 326.5 MB in the end (delta: -91.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:42,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 364.9 MB. Free memory was 326.5 MB in the beginning and 324.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:42,077 INFO L168 Benchmark]: Boogie Preprocessor took 17.93 ms. Allocated memory is still 364.9 MB. Free memory was 324.4 MB in the beginning and 323.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:03:42,078 INFO L168 Benchmark]: RCFGBuilder took 472.28 ms. Allocated memory is still 364.9 MB. Free memory was 323.1 MB in the beginning and 299.3 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:42,079 INFO L168 Benchmark]: TraceAbstraction took 4375.62 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 299.3 MB in the beginning and 315.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:42,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 417.12 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 234.6 MB in the beginning and 326.5 MB in the end (delta: -91.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 364.9 MB. Free memory was 326.5 MB in the beginning and 324.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.93 ms. Allocated memory is still 364.9 MB. Free memory was 324.4 MB in the beginning and 323.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 472.28 ms. Allocated memory is still 364.9 MB. Free memory was 323.1 MB in the beginning and 299.3 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4375.62 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 299.3 MB in the beginning and 315.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1975.4ms, 79 PlacesBefore, 36 PlacesAfterwards, 67 TransitionsBefore, 23 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 44 TotalNumberOfCompositions, 1383 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 797, positive: 761, positive conditional: 0, positive unconditional: 761, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 575, positive: 558, positive conditional: 0, positive unconditional: 558, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, positive: 558, positive conditional: 0, positive unconditional: 558, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 797, positive: 203, positive conditional: 0, positive unconditional: 203, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - 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, 84 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4263.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1194.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2050.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 65 SDtfs, 52 SDslu, 61 SDs, 0 SdLazy, 208 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 144.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=634occurred in iteration=8, InterpolantAutomatonStates: 58, 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: 26.4ms SsaConstructionTime, 194.5ms SatisfiabilityAnalysisTime, 585.2ms InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 777 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...