/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:14:14,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:14:14,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:14:14,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:14:14,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:14:14,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:14:14,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:14:14,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:14:14,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:14:14,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:14:14,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:14:14,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:14:14,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:14:14,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:14:14,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:14:14,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:14:14,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:14:14,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:14:14,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:14:14,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:14:14,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:14:14,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:14:14,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:14:14,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:14:14,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:14:14,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 21:14:14,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 21:14:14,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 21:14:14,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 21:14:14,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 21:14:14,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 21:14:14,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 21:14:14,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 21:14:14,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:14:14,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:14:14,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:14:14,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:14:14,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:14:14,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:14:14,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:14:14,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:14:14,777 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:14:14,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:14:14,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:14:14,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:14:14,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:14:14,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:14:14,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:14:14,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:14:14,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:14:14,778 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:14:14,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:14:14,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:14:14,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:14:14,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:14:14,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:14:14,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:14:14,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:14:14,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:14:14,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:14:14,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:14:14,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:14:14,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:14:14,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:14:14,780 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:14:14,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:14:15,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:14:15,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:14:15,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:14:15,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:14:15,020 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:14:15,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-06-10 21:14:15,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f12d844a/c31b785b46af4210864ade03dda88629/FLAG144964be2 [2021-06-10 21:14:15,441 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:14:15,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.oepc.i [2021-06-10 21:14:15,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f12d844a/c31b785b46af4210864ade03dda88629/FLAG144964be2 [2021-06-10 21:14:15,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f12d844a/c31b785b46af4210864ade03dda88629 [2021-06-10 21:14:15,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:14:15,794 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:14:15,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:14:15,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:14:15,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:14:15,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:14:15" (1/1) ... [2021-06-10 21:14:15,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292a29e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:15, skipping insertion in model container [2021-06-10 21:14:15,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:14:15" (1/1) ... [2021-06-10 21:14:15,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:14:15,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:14:15,940 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/safe013_tso.oepc.i[950,963] [2021-06-10 21:14:16,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:14:16,032 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:14:16,068 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/safe013_tso.oepc.i[950,963] [2021-06-10 21:14:16,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:14:16,144 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:14:16,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16 WrapperNode [2021-06-10 21:14:16,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:14:16,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:14:16,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:14:16,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:14:16,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (1/1) ... [2021-06-10 21:14:16,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (1/1) ... [2021-06-10 21:14:16,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:14:16,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:14:16,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:14:16,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:14:16,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (1/1) ... [2021-06-10 21:14:16,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (1/1) ... [2021-06-10 21:14:16,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (1/1) ... [2021-06-10 21:14:16,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (1/1) ... [2021-06-10 21:14:16,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (1/1) ... [2021-06-10 21:14:16,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (1/1) ... [2021-06-10 21:14:16,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (1/1) ... [2021-06-10 21:14:16,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:14:16,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:14:16,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:14:16,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:14:16,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (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 [2021-06-10 21:14:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:14:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:14:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:14:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:14:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:14:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:14:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:14:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:14:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:14:16,252 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:14:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:14:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:14:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:14:16,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:14:16,253 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:14:16,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:14:16,546 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:14:16,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:14:16 BoogieIcfgContainer [2021-06-10 21:14:16,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:14:16,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:14:16,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:14:16,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:14:16,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:14:15" (1/3) ... [2021-06-10 21:14:16,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c1fd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:14:16, skipping insertion in model container [2021-06-10 21:14:16,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:14:16" (2/3) ... [2021-06-10 21:14:16,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69c1fd02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:14:16, skipping insertion in model container [2021-06-10 21:14:16,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:14:16" (3/3) ... [2021-06-10 21:14:16,551 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.oepc.i [2021-06-10 21:14:16,556 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:14:16,559 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:14:16,559 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:14:16,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,576 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,576 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,577 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,577 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,577 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,577 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,578 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,578 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,578 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,578 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,578 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,578 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,579 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,580 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,580 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,582 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,585 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,585 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,585 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,585 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,586 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,587 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,587 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,587 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:14:16,588 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:14:16,599 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:14:16,612 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:14:16,612 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:14:16,612 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:14:16,612 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:14:16,612 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:14:16,612 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:14:16,612 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:14:16,612 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:14:16,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:14:16,641 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 21:14:16,641 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:14:16,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 21:14:16,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 21:14:16,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 21:14:16,647 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:14:16,655 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:14:16,657 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-06-10 21:14:16,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-06-10 21:14:16,668 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-06-10 21:14:16,669 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:14:16,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-06-10 21:14:16,672 INFO L151 LiptonReduction]: Number of co-enabled transitions 864 [2021-06-10 21:14:16,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:16,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:16,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:16,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:16,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:16,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:16,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:16,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:16,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:16,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:16,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:16,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:16,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:16,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:16,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:16,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:16,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:16,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:16,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:17,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:17,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:17,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:17,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:17,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:17,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:17,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:17,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:17,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:17,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:14:17,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:17,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,566 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:14:17,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,632 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-06-10 21:14:17,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:17,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:17,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:17,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:17,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:17,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:18,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:18,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:18,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:18,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:18,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:18,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:18,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:18,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:18,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:18,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:18,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 21:14:18,715 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:14:18,894 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:14:18,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:18,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:14:18,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:18,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:18,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:14:18,961 INFO L163 LiptonReduction]: Checked pairs total: 1594 [2021-06-10 21:14:18,961 INFO L165 LiptonReduction]: Total number of compositions: 46 [2021-06-10 21:14:18,963 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2317 [2021-06-10 21:14:18,969 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-06-10 21:14:18,969 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:14:18,969 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:18,969 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:18,969 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:18,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1978481777, now seen corresponding path program 1 times [2021-06-10 21:14:18,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:18,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519313610] [2021-06-10 21:14:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:19,092 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:14:19,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:19,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519313610] [2021-06-10 21:14:19,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:19,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:14:19,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662052340] [2021-06-10 21:14:19,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:14:19,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:19,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:14:19,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:14:19,116 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 121 [2021-06-10 21:14:19,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2021-06-10 21:14:19,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:19,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 121 [2021-06-10 21:14:19,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:19,137 INFO L129 PetriNetUnfolder]: 11/52 cut-off events. [2021-06-10 21:14:19,138 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:14:19,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 52 events. 11/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 166 event pairs, 7 based on Foata normal form. 4/54 useless extension candidates. Maximal degree in co-relation 85. Up to 26 conditions per place. [2021-06-10 21:14:19,139 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 4 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2021-06-10 21:14:19,139 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 67 flow [2021-06-10 21:14:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:14:19,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:14:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2021-06-10 21:14:19,147 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878 [2021-06-10 21:14:19,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2021-06-10 21:14:19,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2021-06-10 21:14:19,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:19,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2021-06-10 21:14:19,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2021-06-10 21:14:19,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-06-10 21:14:19,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-06-10 21:14:19,156 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 286 transitions. [2021-06-10 21:14:19,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 67 flow [2021-06-10 21:14:19,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 64 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:14:19,159 INFO L241 Difference]: Finished difference. Result has 27 places, 20 transitions, 69 flow [2021-06-10 21:14:19,160 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2021-06-10 21:14:19,161 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2021-06-10 21:14:19,161 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 69 flow [2021-06-10 21:14:19,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2021-06-10 21:14:19,161 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:19,161 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:19,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:14:19,161 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:19,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1203392391, now seen corresponding path program 1 times [2021-06-10 21:14:19,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:19,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809284814] [2021-06-10 21:14:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:19,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:19,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809284814] [2021-06-10 21:14:19,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:19,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:14:19,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338464703] [2021-06-10 21:14:19,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:14:19,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:14:19,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:14:19,207 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 121 [2021-06-10 21:14:19,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-06-10 21:14:19,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:19,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 121 [2021-06-10 21:14:19,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:19,215 INFO L129 PetriNetUnfolder]: 8/45 cut-off events. [2021-06-10 21:14:19,215 INFO L130 PetriNetUnfolder]: For 13/16 co-relation queries the response was YES. [2021-06-10 21:14:19,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 45 events. 8/45 cut-off events. For 13/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 121 event pairs, 4 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 87. Up to 21 conditions per place. [2021-06-10 21:14:19,216 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 1 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-06-10 21:14:19,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 77 flow [2021-06-10 21:14:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:14:19,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:14:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2021-06-10 21:14:19,218 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8457300275482094 [2021-06-10 21:14:19,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2021-06-10 21:14:19,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2021-06-10 21:14:19,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:19,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2021-06-10 21:14:19,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2021-06-10 21:14:19,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-06-10 21:14:19,220 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-06-10 21:14:19,220 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 69 flow. Second operand 3 states and 307 transitions. [2021-06-10 21:14:19,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 77 flow [2021-06-10 21:14:19,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 72 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:14:19,221 INFO L241 Difference]: Finished difference. Result has 29 places, 20 transitions, 75 flow [2021-06-10 21:14:19,221 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2021-06-10 21:14:19,221 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-06-10 21:14:19,221 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 75 flow [2021-06-10 21:14:19,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-06-10 21:14:19,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:19,222 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:19,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:14:19,222 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:19,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1203392267, now seen corresponding path program 1 times [2021-06-10 21:14:19,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:19,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122328214] [2021-06-10 21:14:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:19,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:19,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122328214] [2021-06-10 21:14:19,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:19,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:14:19,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724286067] [2021-06-10 21:14:19,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:14:19,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:19,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:14:19,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:14:19,253 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 121 [2021-06-10 21:14:19,254 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2021-06-10 21:14:19,254 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:19,254 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 121 [2021-06-10 21:14:19,254 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:19,262 INFO L129 PetriNetUnfolder]: 6/40 cut-off events. [2021-06-10 21:14:19,262 INFO L130 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2021-06-10 21:14:19,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 40 events. 6/40 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 96 event pairs, 3 based on Foata normal form. 2/41 useless extension candidates. Maximal degree in co-relation 86. Up to 18 conditions per place. [2021-06-10 21:14:19,262 INFO L132 encePairwiseOnDemand]: 117/121 looper letters, 3 selfloop transitions, 4 changer transitions 0/22 dead transitions. [2021-06-10 21:14:19,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 97 flow [2021-06-10 21:14:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:14:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:14:19,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-06-10 21:14:19,264 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.837465564738292 [2021-06-10 21:14:19,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-06-10 21:14:19,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-06-10 21:14:19,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:19,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-06-10 21:14:19,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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) [2021-06-10 21:14:19,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-06-10 21:14:19,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-06-10 21:14:19,266 INFO L185 Difference]: Start difference. First operand has 29 places, 20 transitions, 75 flow. Second operand 3 states and 304 transitions. [2021-06-10 21:14:19,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 97 flow [2021-06-10 21:14:19,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:14:19,267 INFO L241 Difference]: Finished difference. Result has 30 places, 22 transitions, 95 flow [2021-06-10 21:14:19,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2021-06-10 21:14:19,267 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2021-06-10 21:14:19,267 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 95 flow [2021-06-10 21:14:19,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2021-06-10 21:14:19,267 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:19,268 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:19,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:14:19,268 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1349218579, now seen corresponding path program 1 times [2021-06-10 21:14:19,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:19,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077343298] [2021-06-10 21:14:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:19,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,294 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:14:19,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:14:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:19,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077343298] [2021-06-10 21:14:19,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:19,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:14:19,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899003227] [2021-06-10 21:14:19,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:14:19,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:19,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:14:19,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:14:19,302 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2021-06-10 21:14:19,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-06-10 21:14:19,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:19,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2021-06-10 21:14:19,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:19,333 INFO L129 PetriNetUnfolder]: 33/102 cut-off events. [2021-06-10 21:14:19,334 INFO L130 PetriNetUnfolder]: For 77/103 co-relation queries the response was YES. [2021-06-10 21:14:19,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 102 events. 33/102 cut-off events. For 77/103 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 404 event pairs, 0 based on Foata normal form. 11/111 useless extension candidates. Maximal degree in co-relation 279. Up to 38 conditions per place. [2021-06-10 21:14:19,335 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 11 selfloop transitions, 18 changer transitions 0/39 dead transitions. [2021-06-10 21:14:19,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 248 flow [2021-06-10 21:14:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:14:19,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:14:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2021-06-10 21:14:19,336 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7801652892561983 [2021-06-10 21:14:19,336 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2021-06-10 21:14:19,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2021-06-10 21:14:19,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:19,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2021-06-10 21:14:19,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 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) [2021-06-10 21:14:19,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:14:19,339 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:14:19,339 INFO L185 Difference]: Start difference. First operand has 30 places, 22 transitions, 95 flow. Second operand 5 states and 472 transitions. [2021-06-10 21:14:19,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 248 flow [2021-06-10 21:14:19,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:14:19,341 INFO L241 Difference]: Finished difference. Result has 37 places, 35 transitions, 249 flow [2021-06-10 21:14:19,341 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2021-06-10 21:14:19,341 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-06-10 21:14:19,341 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 249 flow [2021-06-10 21:14:19,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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) [2021-06-10 21:14:19,341 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:19,341 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:19,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:14:19,342 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:19,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:19,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1349545939, now seen corresponding path program 2 times [2021-06-10 21:14:19,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:19,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126027256] [2021-06-10 21:14:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:19,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:19,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126027256] [2021-06-10 21:14:19,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:19,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:14:19,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142048652] [2021-06-10 21:14:19,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:14:19,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:19,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:14:19,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:14:19,369 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 121 [2021-06-10 21:14:19,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2021-06-10 21:14:19,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:19,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 121 [2021-06-10 21:14:19,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:19,387 INFO L129 PetriNetUnfolder]: 18/86 cut-off events. [2021-06-10 21:14:19,387 INFO L130 PetriNetUnfolder]: For 267/318 co-relation queries the response was YES. [2021-06-10 21:14:19,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 86 events. 18/86 cut-off events. For 267/318 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 355 event pairs, 3 based on Foata normal form. 16/100 useless extension candidates. Maximal degree in co-relation 292. Up to 35 conditions per place. [2021-06-10 21:14:19,388 INFO L132 encePairwiseOnDemand]: 117/121 looper letters, 1 selfloop transitions, 5 changer transitions 11/35 dead transitions. [2021-06-10 21:14:19,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 265 flow [2021-06-10 21:14:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:14:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:14:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-06-10 21:14:19,389 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8078512396694215 [2021-06-10 21:14:19,389 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-06-10 21:14:19,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-06-10 21:14:19,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:19,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-06-10 21:14:19,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2021-06-10 21:14:19,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:14:19,391 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:14:19,391 INFO L185 Difference]: Start difference. First operand has 37 places, 35 transitions, 249 flow. Second operand 4 states and 391 transitions. [2021-06-10 21:14:19,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 265 flow [2021-06-10 21:14:19,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 263 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-06-10 21:14:19,394 INFO L241 Difference]: Finished difference. Result has 42 places, 24 transitions, 172 flow [2021-06-10 21:14:19,394 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2021-06-10 21:14:19,394 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2021-06-10 21:14:19,394 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 172 flow [2021-06-10 21:14:19,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2021-06-10 21:14:19,395 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:19,395 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:19,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:14:19,395 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:19,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:19,395 INFO L82 PathProgramCache]: Analyzing trace with hash -901935181, now seen corresponding path program 1 times [2021-06-10 21:14:19,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:19,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656668050] [2021-06-10 21:14:19,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:19,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,425 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 21:14:19,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:14:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:19,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656668050] [2021-06-10 21:14:19,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:19,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:14:19,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700397077] [2021-06-10 21:14:19,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:14:19,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:14:19,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:14:19,438 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-06-10 21:14:19,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-06-10 21:14:19,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:19,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-06-10 21:14:19,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:19,500 INFO L129 PetriNetUnfolder]: 69/165 cut-off events. [2021-06-10 21:14:19,500 INFO L130 PetriNetUnfolder]: For 921/980 co-relation queries the response was YES. [2021-06-10 21:14:19,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 165 events. 69/165 cut-off events. For 921/980 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 759 event pairs, 10 based on Foata normal form. 20/168 useless extension candidates. Maximal degree in co-relation 490. Up to 74 conditions per place. [2021-06-10 21:14:19,501 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 8 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2021-06-10 21:14:19,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 212 flow [2021-06-10 21:14:19,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:14:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:14:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2021-06-10 21:14:19,503 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7582644628099173 [2021-06-10 21:14:19,503 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2021-06-10 21:14:19,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2021-06-10 21:14:19,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:19,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2021-06-10 21:14:19,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2021-06-10 21:14:19,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:14:19,505 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:14:19,505 INFO L185 Difference]: Start difference. First operand has 42 places, 24 transitions, 172 flow. Second operand 4 states and 367 transitions. [2021-06-10 21:14:19,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 212 flow [2021-06-10 21:14:19,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 157 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-06-10 21:14:19,507 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 155 flow [2021-06-10 21:14:19,507 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2021-06-10 21:14:19,507 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-06-10 21:14:19,507 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 155 flow [2021-06-10 21:14:19,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-06-10 21:14:19,507 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:19,507 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:19,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:14:19,508 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:19,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:19,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1890510203, now seen corresponding path program 1 times [2021-06-10 21:14:19,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:19,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541900909] [2021-06-10 21:14:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:19,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,536 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 21:14:19,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:14:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:19,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541900909] [2021-06-10 21:14:19,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:19,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:14:19,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187691680] [2021-06-10 21:14:19,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:14:19,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:14:19,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:14:19,549 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-06-10 21:14:19,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 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) [2021-06-10 21:14:19,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:19,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-06-10 21:14:19,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:19,593 INFO L129 PetriNetUnfolder]: 50/142 cut-off events. [2021-06-10 21:14:19,593 INFO L130 PetriNetUnfolder]: For 286/427 co-relation queries the response was YES. [2021-06-10 21:14:19,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 142 events. 50/142 cut-off events. For 286/427 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 672 event pairs, 1 based on Foata normal form. 34/157 useless extension candidates. Maximal degree in co-relation 473. Up to 99 conditions per place. [2021-06-10 21:14:19,594 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 9 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2021-06-10 21:14:19,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 218 flow [2021-06-10 21:14:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:14:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:14:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2021-06-10 21:14:19,595 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7586776859504132 [2021-06-10 21:14:19,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 459 transitions. [2021-06-10 21:14:19,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 459 transitions. [2021-06-10 21:14:19,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:19,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 459 transitions. [2021-06-10 21:14:19,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:14:19,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:14:19,598 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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) [2021-06-10 21:14:19,598 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 155 flow. Second operand 5 states and 459 transitions. [2021-06-10 21:14:19,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 218 flow [2021-06-10 21:14:19,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:14:19,599 INFO L241 Difference]: Finished difference. Result has 43 places, 32 transitions, 207 flow [2021-06-10 21:14:19,599 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2021-06-10 21:14:19,599 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-06-10 21:14:19,599 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 207 flow [2021-06-10 21:14:19,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 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) [2021-06-10 21:14:19,600 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:19,600 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:19,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:14:19,600 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:19,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:19,600 INFO L82 PathProgramCache]: Analyzing trace with hash 886562916, now seen corresponding path program 1 times [2021-06-10 21:14:19,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:19,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011692713] [2021-06-10 21:14:19,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:19,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:14:19,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:19,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011692713] [2021-06-10 21:14:19,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:19,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:14:19,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230554788] [2021-06-10 21:14:19,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:14:19,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:19,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:14:19,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:14:19,624 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 121 [2021-06-10 21:14:19,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-06-10 21:14:19,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:19,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 121 [2021-06-10 21:14:19,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:19,643 INFO L129 PetriNetUnfolder]: 55/172 cut-off events. [2021-06-10 21:14:19,643 INFO L130 PetriNetUnfolder]: For 484/595 co-relation queries the response was YES. [2021-06-10 21:14:19,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 172 events. 55/172 cut-off events. For 484/595 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 948 event pairs, 1 based on Foata normal form. 18/162 useless extension candidates. Maximal degree in co-relation 620. Up to 120 conditions per place. [2021-06-10 21:14:19,644 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 3 selfloop transitions, 2 changer transitions 6/33 dead transitions. [2021-06-10 21:14:19,644 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 33 transitions, 223 flow [2021-06-10 21:14:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:14:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:14:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2021-06-10 21:14:19,645 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8057851239669421 [2021-06-10 21:14:19,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2021-06-10 21:14:19,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2021-06-10 21:14:19,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:19,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2021-06-10 21:14:19,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 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) [2021-06-10 21:14:19,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:14:19,647 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2021-06-10 21:14:19,647 INFO L185 Difference]: Start difference. First operand has 43 places, 32 transitions, 207 flow. Second operand 4 states and 390 transitions. [2021-06-10 21:14:19,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 33 transitions, 223 flow [2021-06-10 21:14:19,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 33 transitions, 211 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-06-10 21:14:19,648 INFO L241 Difference]: Finished difference. Result has 46 places, 27 transitions, 174 flow [2021-06-10 21:14:19,648 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2021-06-10 21:14:19,649 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2021-06-10 21:14:19,649 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 174 flow [2021-06-10 21:14:19,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-06-10 21:14:19,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:14:19,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:14:19,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:14:19,649 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:14:19,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:14:19,649 INFO L82 PathProgramCache]: Analyzing trace with hash 210852868, now seen corresponding path program 2 times [2021-06-10 21:14:19,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:14:19,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853575956] [2021-06-10 21:14:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:14:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:14:19,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:14:19,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:14:19,677 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 21:14:19,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:14:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:14:19,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853575956] [2021-06-10 21:14:19,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:14:19,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:14:19,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770460498] [2021-06-10 21:14:19,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:14:19,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:14:19,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:14:19,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:14:19,691 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-06-10 21:14:19,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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) [2021-06-10 21:14:19,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:14:19,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-06-10 21:14:19,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:14:19,733 INFO L129 PetriNetUnfolder]: 18/84 cut-off events. [2021-06-10 21:14:19,733 INFO L130 PetriNetUnfolder]: For 231/288 co-relation queries the response was YES. [2021-06-10 21:14:19,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 84 events. 18/84 cut-off events. For 231/288 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 352 event pairs, 1 based on Foata normal form. 30/110 useless extension candidates. Maximal degree in co-relation 316. Up to 35 conditions per place. [2021-06-10 21:14:19,733 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-06-10 21:14:19,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 27 transitions, 184 flow [2021-06-10 21:14:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:14:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:14:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 540 transitions. [2021-06-10 21:14:19,735 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.743801652892562 [2021-06-10 21:14:19,735 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 540 transitions. [2021-06-10 21:14:19,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 540 transitions. [2021-06-10 21:14:19,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:14:19,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 540 transitions. [2021-06-10 21:14:19,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 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) [2021-06-10 21:14:19,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2021-06-10 21:14:19,737 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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) [2021-06-10 21:14:19,737 INFO L185 Difference]: Start difference. First operand has 46 places, 27 transitions, 174 flow. Second operand 6 states and 540 transitions. [2021-06-10 21:14:19,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 27 transitions, 184 flow [2021-06-10 21:14:19,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 27 transitions, 158 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-06-10 21:14:19,738 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-06-10 21:14:19,738 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-06-10 21:14:19,738 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-06-10 21:14:19,738 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2021-06-10 21:14:19,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 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) [2021-06-10 21:14:19,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 21:14:19,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:14:19 BasicIcfg [2021-06-10 21:14:19,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:14:19,742 INFO L168 Benchmark]: Toolchain (without parser) took 3947.62 ms. Allocated memory was 335.5 MB in the beginning and 402.7 MB in the end (delta: 67.1 MB). Free memory was 298.9 MB in the beginning and 303.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 65.0 MB. Max. memory is 16.0 GB. [2021-06-10 21:14:19,742 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 335.5 MB. Free memory was 316.9 MB in the beginning and 316.8 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:14:19,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.53 ms. Allocated memory is still 335.5 MB. Free memory was 298.8 MB in the beginning and 299.3 MB in the end (delta: -552.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-10 21:14:19,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.26 ms. Allocated memory is still 335.5 MB. Free memory was 299.3 MB in the beginning and 297.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:14:19,743 INFO L168 Benchmark]: Boogie Preprocessor took 13.05 ms. Allocated memory is still 335.5 MB. Free memory was 297.2 MB in the beginning and 296.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:14:19,743 INFO L168 Benchmark]: RCFGBuilder took 363.20 ms. Allocated memory is still 335.5 MB. Free memory was 296.2 MB in the beginning and 273.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:14:19,743 INFO L168 Benchmark]: TraceAbstraction took 3193.36 ms. Allocated memory was 335.5 MB in the beginning and 402.7 MB in the end (delta: 67.1 MB). Free memory was 272.1 MB in the beginning and 303.5 MB in the end (delta: -31.5 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.0 GB. [2021-06-10 21:14:19,744 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 335.5 MB. Free memory was 316.9 MB in the beginning and 316.8 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 345.53 ms. Allocated memory is still 335.5 MB. Free memory was 298.8 MB in the beginning and 299.3 MB in the end (delta: -552.0 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.26 ms. Allocated memory is still 335.5 MB. Free memory was 299.3 MB in the beginning and 297.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.05 ms. Allocated memory is still 335.5 MB. Free memory was 297.2 MB in the beginning and 296.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 363.20 ms. Allocated memory is still 335.5 MB. Free memory was 296.2 MB in the beginning and 273.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3193.36 ms. Allocated memory was 335.5 MB in the beginning and 402.7 MB in the end (delta: 67.1 MB). Free memory was 272.1 MB in the beginning and 303.5 MB in the end (delta: -31.5 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2304.2ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 17 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 7 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1594 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1125, positive: 1039, positive conditional: 0, positive unconditional: 1039, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 632, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 632, positive: 601, positive conditional: 0, positive unconditional: 601, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 632, positive: 588, positive conditional: 0, positive unconditional: 588, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 135, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1125, positive: 438, positive conditional: 0, positive unconditional: 438, negative: 55, negative conditional: 0, negative unconditional: 55, unknown: 632, unknown conditional: 0, unknown unconditional: 632] , Statistics on independence cache: Total cache size (in pairs): 989, Positive cache size: 958, Positive conditional cache size: 0, Positive unconditional cache size: 958, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - 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 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3129.7ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 338.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2353.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 15 SDslu, 18 SDs, 0 SdLazy, 78 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 114.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=4, InterpolantAutomatonStates: 37, 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: 12.0ms SsaConstructionTime, 82.6ms SatisfiabilityAnalysisTime, 233.7ms InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...