/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/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:31:11,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:31:11,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:31:11,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:31:11,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:31:11,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:31:11,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:31:11,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:31:11,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:31:11,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:31:11,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:31:11,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:31:11,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:31:11,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:31:11,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:31:11,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:31:11,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:31:11,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:31:11,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:31:11,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:31:11,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:31:11,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:31:11,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:31:11,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:31:11,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:31:11,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:31:11,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:31:11,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:31:11,724 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 21:31:11,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:31:11,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:31:11,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:31:11,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:31:11,753 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:31:11,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:31:11,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:31:11,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:31:11,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:31:11,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:31:11,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:31:11,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:31:11,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:31:11,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:31:11,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:31:11,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:31:11,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:31:11,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:31:11,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:31:11,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:31:11,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:31:11,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:31:11,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:31:11,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:31:11,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:31:11,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:31:11,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:31:11,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:31:11,756 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:31:12,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:31:12,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:31:12,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:31:12,023 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:31:12,023 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:31:12,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-06-10 21:31:12,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52797dfec/b7eccd8bc1cf444b9be07a50a47680a5/FLAGa29923cf0 [2021-06-10 21:31:12,525 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:31:12,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-06-10 21:31:12,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52797dfec/b7eccd8bc1cf444b9be07a50a47680a5/FLAGa29923cf0 [2021-06-10 21:31:12,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52797dfec/b7eccd8bc1cf444b9be07a50a47680a5 [2021-06-10 21:31:12,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:31:12,556 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:31:12,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:31:12,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:31:12,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:31:12,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7859f162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12, skipping insertion in model container [2021-06-10 21:31:12,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:31:12,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:31:12,751 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/safe030_tso.oepc.i[950,963] [2021-06-10 21:31:12,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:31:12,843 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:31:12,851 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/safe030_tso.oepc.i[950,963] [2021-06-10 21:31:12,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:31:12,913 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:31:12,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12 WrapperNode [2021-06-10 21:31:12,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:31:12,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:31:12,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:31:12,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:31:12,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:31:12,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:31:12,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:31:12,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:31:12,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (1/1) ... [2021-06-10 21:31:12,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:31:12,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:31:12,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:31:12,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:31:12,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (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 21:31:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:31:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:31:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:31:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:31:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:31:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:31:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:31:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:31:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:31:13,032 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:31:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:31:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:31:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:31:13,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:31:13,033 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 21:31:13,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:31:13,281 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:31:13,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:31:13 BoogieIcfgContainer [2021-06-10 21:31:13,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:31:13,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:31:13,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:31:13,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:31:13,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:31:12" (1/3) ... [2021-06-10 21:31:13,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104f8168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:31:13, skipping insertion in model container [2021-06-10 21:31:13,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:31:12" (2/3) ... [2021-06-10 21:31:13,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104f8168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:31:13, skipping insertion in model container [2021-06-10 21:31:13,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:31:13" (3/3) ... [2021-06-10 21:31:13,287 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2021-06-10 21:31:13,291 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:31:13,294 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:31:13,295 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:31:13,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,313 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,313 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,314 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,314 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,314 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,314 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,315 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,316 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,318 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,319 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,323 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,323 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,324 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:31:13,325 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:31:13,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:31:13,351 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:31:13,351 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:31:13,351 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:31:13,351 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:31:13,351 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:31:13,351 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:31:13,351 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:31:13,351 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:31:13,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 21:31:13,382 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-06-10 21:31:13,382 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:31:13,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 21:31:13,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 21:31:13,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-06-10 21:31:13,388 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:31:13,395 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-06-10 21:31:13,398 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-06-10 21:31:13,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-06-10 21:31:13,431 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-06-10 21:31:13,431 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:31:13,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-06-10 21:31:13,436 INFO L151 LiptonReduction]: Number of co-enabled transitions 864 [2021-06-10 21:31:13,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:13,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:13,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:31:13,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:13,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:13,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:31:13,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:13,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:13,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:13,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:13,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:31:14,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:14,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:14,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:14,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:14,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:31:14,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:31:14,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:14,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,227 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:31:14,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-06-10 21:31:14,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:14,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:14,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:14,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:14,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:31:14,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:14,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:14,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:14,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:14,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:14,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:31:14,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:14,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:14,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:14,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:14,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:31:15,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:15,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:15,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:31:15,239 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-06-10 21:31:15,413 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-06-10 21:31:15,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:15,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:15,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 21:31:15,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:31:15,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:15,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:15,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 21:31:15,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-10 21:31:15,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:31:15,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 21:31:15,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-06-10 21:31:15,495 INFO L163 LiptonReduction]: Checked pairs total: 1792 [2021-06-10 21:31:15,495 INFO L165 LiptonReduction]: Total number of compositions: 45 [2021-06-10 21:31:15,497 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2110 [2021-06-10 21:31:15,502 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-10 21:31:15,502 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:31:15,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:15,503 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:15,503 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:15,507 INFO L82 PathProgramCache]: Analyzing trace with hash 223185157, now seen corresponding path program 1 times [2021-06-10 21:31:15,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:15,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277749724] [2021-06-10 21:31:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:15,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:15,678 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 21:31:15,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277749724] [2021-06-10 21:31:15,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:15,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:31:15,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739031068] [2021-06-10 21:31:15,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 21:31:15,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:15,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 21:31:15,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 21:31:15,696 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 118 [2021-06-10 21:31:15,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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 21:31:15,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:15,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 118 [2021-06-10 21:31:15,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:15,703 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-06-10 21:31:15,703 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:31:15,703 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 21:31:15,704 INFO L132 encePairwiseOnDemand]: 117/118 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2021-06-10 21:31:15,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2021-06-10 21:31:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 21:31:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 21:31:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 223 transitions. [2021-06-10 21:31:15,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9449152542372882 [2021-06-10 21:31:15,712 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 223 transitions. [2021-06-10 21:31:15,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 223 transitions. [2021-06-10 21:31:15,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:15,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 223 transitions. [2021-06-10 21:31:15,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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 21:31:15,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:31:15,719 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:31:15,721 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 223 transitions. [2021-06-10 21:31:15,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2021-06-10 21:31:15,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:31:15,723 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2021-06-10 21:31:15,725 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2021-06-10 21:31:15,725 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2021-06-10 21:31:15,725 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2021-06-10 21:31:15,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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 21:31:15,726 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:15,726 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:15,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:31:15,726 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:15,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:15,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1671194756, now seen corresponding path program 1 times [2021-06-10 21:31:15,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:15,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240672185] [2021-06-10 21:31:15,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:15,804 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:31:15,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:15,815 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 21:31:15,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240672185] [2021-06-10 21:31:15,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:15,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:31:15,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996418448] [2021-06-10 21:31:15,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:31:15,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:15,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:31:15,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:31:15,819 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 118 [2021-06-10 21:31:15,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 21:31:15,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:15,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 118 [2021-06-10 21:31:15,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:15,860 INFO L129 PetriNetUnfolder]: 90/211 cut-off events. [2021-06-10 21:31:15,861 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:31:15,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 211 events. 90/211 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1002 event pairs, 28 based on Foata normal form. 16/219 useless extension candidates. Maximal degree in co-relation 384. Up to 85 conditions per place. [2021-06-10 21:31:15,862 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 7 selfloop transitions, 7 changer transitions 0/23 dead transitions. [2021-06-10 21:31:15,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 80 flow [2021-06-10 21:31:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:31:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:31:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2021-06-10 21:31:15,869 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.788135593220339 [2021-06-10 21:31:15,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2021-06-10 21:31:15,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2021-06-10 21:31:15,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:15,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2021-06-10 21:31:15,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 21:31:15,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 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 21:31:15,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 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 21:31:15,871 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 279 transitions. [2021-06-10 21:31:15,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 80 flow [2021-06-10 21:31:15,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:31:15,873 INFO L241 Difference]: Finished difference. Result has 29 places, 23 transitions, 94 flow [2021-06-10 21:31:15,873 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2021-06-10 21:31:15,873 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-06-10 21:31:15,873 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 94 flow [2021-06-10 21:31:15,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 21:31:15,873 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:15,873 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:15,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:31:15,874 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:15,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:15,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2058614239, now seen corresponding path program 1 times [2021-06-10 21:31:15,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:15,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412624022] [2021-06-10 21:31:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:15,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:15,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:15,929 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 21:31:15,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412624022] [2021-06-10 21:31:15,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:15,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:31:15,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909019727] [2021-06-10 21:31:15,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:31:15,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:15,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:31:15,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:31:15,934 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 118 [2021-06-10 21:31:15,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:31:15,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:15,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 118 [2021-06-10 21:31:15,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:15,964 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-06-10 21:31:15,964 INFO L130 PetriNetUnfolder]: For 68/105 co-relation queries the response was YES. [2021-06-10 21:31:15,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 184 events. 75/184 cut-off events. For 68/105 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 857 event pairs, 19 based on Foata normal form. 4/182 useless extension candidates. Maximal degree in co-relation 464. Up to 78 conditions per place. [2021-06-10 21:31:15,966 INFO L132 encePairwiseOnDemand]: 114/118 looper letters, 5 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2021-06-10 21:31:15,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 134 flow [2021-06-10 21:31:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:31:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:31:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-06-10 21:31:15,969 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8418079096045198 [2021-06-10 21:31:15,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-06-10 21:31:15,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-06-10 21:31:15,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:15,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-06-10 21:31:15,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 21:31:15,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 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 21:31:15,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 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 21:31:15,971 INFO L185 Difference]: Start difference. First operand has 29 places, 23 transitions, 94 flow. Second operand 3 states and 298 transitions. [2021-06-10 21:31:15,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 134 flow [2021-06-10 21:31:15,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:31:15,973 INFO L241 Difference]: Finished difference. Result has 30 places, 27 transitions, 121 flow [2021-06-10 21:31:15,974 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2021-06-10 21:31:15,974 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2021-06-10 21:31:15,974 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 121 flow [2021-06-10 21:31:15,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:31:15,974 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:15,974 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:15,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:31:15,974 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash -268595577, now seen corresponding path program 1 times [2021-06-10 21:31:15,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:15,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922156733] [2021-06-10 21:31:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:16,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,027 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 21:31:16,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922156733] [2021-06-10 21:31:16,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:16,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:31:16,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736348043] [2021-06-10 21:31:16,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:31:16,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:16,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:31:16,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:31:16,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 118 [2021-06-10 21:31:16,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:31:16,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:16,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 118 [2021-06-10 21:31:16,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:16,047 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-06-10 21:31:16,047 INFO L130 PetriNetUnfolder]: For 82/120 co-relation queries the response was YES. [2021-06-10 21:31:16,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 164 events. 64/164 cut-off events. For 82/120 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 728 event pairs, 10 based on Foata normal form. 3/162 useless extension candidates. Maximal degree in co-relation 406. Up to 72 conditions per place. [2021-06-10 21:31:16,055 INFO L132 encePairwiseOnDemand]: 114/118 looper letters, 5 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2021-06-10 21:31:16,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 157 flow [2021-06-10 21:31:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:31:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:31:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-06-10 21:31:16,057 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8418079096045198 [2021-06-10 21:31:16,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-06-10 21:31:16,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-06-10 21:31:16,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:16,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-06-10 21:31:16,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 21:31:16,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 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 21:31:16,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 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 21:31:16,061 INFO L185 Difference]: Start difference. First operand has 30 places, 27 transitions, 121 flow. Second operand 3 states and 298 transitions. [2021-06-10 21:31:16,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 157 flow [2021-06-10 21:31:16,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:31:16,063 INFO L241 Difference]: Finished difference. Result has 32 places, 31 transitions, 157 flow [2021-06-10 21:31:16,063 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2021-06-10 21:31:16,063 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2021-06-10 21:31:16,063 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 157 flow [2021-06-10 21:31:16,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:31:16,064 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:16,064 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:16,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:31:16,064 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:16,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:16,064 INFO L82 PathProgramCache]: Analyzing trace with hash 205047710, now seen corresponding path program 1 times [2021-06-10 21:31:16,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:16,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158877123] [2021-06-10 21:31:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:16,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,119 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:31:16,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:16,128 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 21:31:16,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158877123] [2021-06-10 21:31:16,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:16,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:31:16,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663348988] [2021-06-10 21:31:16,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:31:16,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:16,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:31:16,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:31:16,130 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 118 [2021-06-10 21:31:16,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:31:16,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:16,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 118 [2021-06-10 21:31:16,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:16,163 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-06-10 21:31:16,164 INFO L130 PetriNetUnfolder]: For 86/168 co-relation queries the response was YES. [2021-06-10 21:31:16,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 151 events. 57/151 cut-off events. For 86/168 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 638 event pairs, 1 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 492. Up to 67 conditions per place. [2021-06-10 21:31:16,168 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 18 selfloop transitions, 15 changer transitions 0/42 dead transitions. [2021-06-10 21:31:16,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 283 flow [2021-06-10 21:31:16,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:31:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:31:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2021-06-10 21:31:16,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.788135593220339 [2021-06-10 21:31:16,169 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 372 transitions. [2021-06-10 21:31:16,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 372 transitions. [2021-06-10 21:31:16,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:16,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 372 transitions. [2021-06-10 21:31:16,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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 21:31:16,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 21:31:16,172 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 21:31:16,172 INFO L185 Difference]: Start difference. First operand has 32 places, 31 transitions, 157 flow. Second operand 4 states and 372 transitions. [2021-06-10 21:31:16,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 283 flow [2021-06-10 21:31:16,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:31:16,176 INFO L241 Difference]: Finished difference. Result has 37 places, 40 transitions, 274 flow [2021-06-10 21:31:16,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=274, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2021-06-10 21:31:16,176 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-06-10 21:31:16,176 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 274 flow [2021-06-10 21:31:16,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:31:16,176 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:16,176 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:16,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:31:16,177 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:16,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:16,178 INFO L82 PathProgramCache]: Analyzing trace with hash -999514919, now seen corresponding path program 1 times [2021-06-10 21:31:16,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:16,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315651244] [2021-06-10 21:31:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:16,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:16,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,209 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:31:16,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:16,215 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 21:31:16,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315651244] [2021-06-10 21:31:16,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:16,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:31:16,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584056862] [2021-06-10 21:31:16,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:31:16,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:16,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:31:16,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:31:16,217 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 118 [2021-06-10 21:31:16,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 21:31:16,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:16,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 118 [2021-06-10 21:31:16,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:16,244 INFO L129 PetriNetUnfolder]: 54/162 cut-off events. [2021-06-10 21:31:16,244 INFO L130 PetriNetUnfolder]: For 237/311 co-relation queries the response was YES. [2021-06-10 21:31:16,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 162 events. 54/162 cut-off events. For 237/311 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 770 event pairs, 1 based on Foata normal form. 11/171 useless extension candidates. Maximal degree in co-relation 661. Up to 74 conditions per place. [2021-06-10 21:31:16,247 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 14 selfloop transitions, 20 changer transitions 3/46 dead transitions. [2021-06-10 21:31:16,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 394 flow [2021-06-10 21:31:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:31:16,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:31:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-06-10 21:31:16,248 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7860169491525424 [2021-06-10 21:31:16,248 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-06-10 21:31:16,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-06-10 21:31:16,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:16,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-06-10 21:31:16,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 21:31:16,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 21:31:16,250 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 21:31:16,251 INFO L185 Difference]: Start difference. First operand has 37 places, 40 transitions, 274 flow. Second operand 4 states and 371 transitions. [2021-06-10 21:31:16,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 394 flow [2021-06-10 21:31:16,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 394 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:31:16,254 INFO L241 Difference]: Finished difference. Result has 43 places, 41 transitions, 372 flow [2021-06-10 21:31:16,254 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2021-06-10 21:31:16,254 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-06-10 21:31:16,254 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 372 flow [2021-06-10 21:31:16,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 21:31:16,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:16,255 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:16,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:31:16,255 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:16,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:16,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1652248090, now seen corresponding path program 1 times [2021-06-10 21:31:16,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:16,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986531711] [2021-06-10 21:31:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:16,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:31:16,292 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 21:31:16,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986531711] [2021-06-10 21:31:16,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:16,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:31:16,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262947006] [2021-06-10 21:31:16,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:31:16,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:16,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:31:16,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:31:16,294 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 118 [2021-06-10 21:31:16,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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 21:31:16,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:16,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 118 [2021-06-10 21:31:16,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:16,347 INFO L129 PetriNetUnfolder]: 124/326 cut-off events. [2021-06-10 21:31:16,347 INFO L130 PetriNetUnfolder]: For 914/1032 co-relation queries the response was YES. [2021-06-10 21:31:16,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 326 events. 124/326 cut-off events. For 914/1032 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2033 event pairs, 27 based on Foata normal form. 38/350 useless extension candidates. Maximal degree in co-relation 1077. Up to 163 conditions per place. [2021-06-10 21:31:16,350 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 8 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2021-06-10 21:31:16,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 424 flow [2021-06-10 21:31:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:31:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:31:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-06-10 21:31:16,351 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7508474576271187 [2021-06-10 21:31:16,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-06-10 21:31:16,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-06-10 21:31:16,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:16,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-06-10 21:31:16,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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 21:31:16,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 21:31:16,353 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 21:31:16,353 INFO L185 Difference]: Start difference. First operand has 43 places, 41 transitions, 372 flow. Second operand 5 states and 443 transitions. [2021-06-10 21:31:16,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 424 flow [2021-06-10 21:31:16,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 418 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-06-10 21:31:16,359 INFO L241 Difference]: Finished difference. Result has 50 places, 48 transitions, 426 flow [2021-06-10 21:31:16,359 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2021-06-10 21:31:16,359 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2021-06-10 21:31:16,359 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 426 flow [2021-06-10 21:31:16,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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 21:31:16,359 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:16,359 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:16,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:31:16,360 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash 109783971, now seen corresponding path program 1 times [2021-06-10 21:31:16,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:16,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924175472] [2021-06-10 21:31:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:16,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:16,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,400 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:31:16,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:16,405 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 21:31:16,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924175472] [2021-06-10 21:31:16,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:16,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:31:16,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586093011] [2021-06-10 21:31:16,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:31:16,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:16,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:31:16,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:31:16,407 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 118 [2021-06-10 21:31:16,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 21:31:16,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:16,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 118 [2021-06-10 21:31:16,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:16,455 INFO L129 PetriNetUnfolder]: 163/421 cut-off events. [2021-06-10 21:31:16,456 INFO L130 PetriNetUnfolder]: For 1237/1433 co-relation queries the response was YES. [2021-06-10 21:31:16,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 421 events. 163/421 cut-off events. For 1237/1433 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 2873 event pairs, 44 based on Foata normal form. 41/432 useless extension candidates. Maximal degree in co-relation 1657. Up to 269 conditions per place. [2021-06-10 21:31:16,458 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 14 selfloop transitions, 20 changer transitions 3/53 dead transitions. [2021-06-10 21:31:16,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 558 flow [2021-06-10 21:31:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:31:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:31:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-06-10 21:31:16,460 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7860169491525424 [2021-06-10 21:31:16,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-06-10 21:31:16,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-06-10 21:31:16,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:16,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-06-10 21:31:16,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 21:31:16,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 21:31:16,461 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 21:31:16,462 INFO L185 Difference]: Start difference. First operand has 50 places, 48 transitions, 426 flow. Second operand 4 states and 371 transitions. [2021-06-10 21:31:16,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 558 flow [2021-06-10 21:31:16,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:31:16,466 INFO L241 Difference]: Finished difference. Result has 55 places, 48 transitions, 520 flow [2021-06-10 21:31:16,466 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=520, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2021-06-10 21:31:16,467 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2021-06-10 21:31:16,467 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 520 flow [2021-06-10 21:31:16,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 21:31:16,467 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:16,467 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:16,467 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:31:16,467 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:16,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:16,467 INFO L82 PathProgramCache]: Analyzing trace with hash -452949235, now seen corresponding path program 1 times [2021-06-10 21:31:16,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:16,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003910966] [2021-06-10 21:31:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:16,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:31:16,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,508 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:31:16,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:31:16,514 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 21:31:16,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003910966] [2021-06-10 21:31:16,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:16,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:31:16,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793482962] [2021-06-10 21:31:16,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:31:16,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:16,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:31:16,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:31:16,517 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 118 [2021-06-10 21:31:16,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 520 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 21:31:16,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:16,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 118 [2021-06-10 21:31:16,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:16,566 INFO L129 PetriNetUnfolder]: 211/531 cut-off events. [2021-06-10 21:31:16,566 INFO L130 PetriNetUnfolder]: For 1738/1981 co-relation queries the response was YES. [2021-06-10 21:31:16,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 531 events. 211/531 cut-off events. For 1738/1981 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 3832 event pairs, 68 based on Foata normal form. 38/518 useless extension candidates. Maximal degree in co-relation 2071. Up to 377 conditions per place. [2021-06-10 21:31:16,569 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 11 selfloop transitions, 19 changer transitions 7/53 dead transitions. [2021-06-10 21:31:16,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 664 flow [2021-06-10 21:31:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:31:16,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:31:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-06-10 21:31:16,570 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7860169491525424 [2021-06-10 21:31:16,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-06-10 21:31:16,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-06-10 21:31:16,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:16,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-06-10 21:31:16,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 21:31:16,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 21:31:16,572 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 21:31:16,572 INFO L185 Difference]: Start difference. First operand has 55 places, 48 transitions, 520 flow. Second operand 4 states and 371 transitions. [2021-06-10 21:31:16,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 664 flow [2021-06-10 21:31:16,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 662 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-06-10 21:31:16,577 INFO L241 Difference]: Finished difference. Result has 59 places, 44 transitions, 505 flow [2021-06-10 21:31:16,577 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=505, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2021-06-10 21:31:16,577 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 32 predicate places. [2021-06-10 21:31:16,577 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 505 flow [2021-06-10 21:31:16,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 21:31:16,577 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:16,577 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:16,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 21:31:16,578 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:16,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:16,578 INFO L82 PathProgramCache]: Analyzing trace with hash 436479811, now seen corresponding path program 1 times [2021-06-10 21:31:16,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:16,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721791450] [2021-06-10 21:31:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:16,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:31:16,604 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 21:31:16,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721791450] [2021-06-10 21:31:16,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:16,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:31:16,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894823250] [2021-06-10 21:31:16,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:31:16,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:16,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:31:16,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:31:16,606 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 118 [2021-06-10 21:31:16,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 505 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 21:31:16,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:16,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 118 [2021-06-10 21:31:16,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:16,677 INFO L129 PetriNetUnfolder]: 169/482 cut-off events. [2021-06-10 21:31:16,677 INFO L130 PetriNetUnfolder]: For 1950/2729 co-relation queries the response was YES. [2021-06-10 21:31:16,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2105 conditions, 482 events. 169/482 cut-off events. For 1950/2729 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 3697 event pairs, 10 based on Foata normal form. 236/688 useless extension candidates. Maximal degree in co-relation 2085. Up to 365 conditions per place. [2021-06-10 21:31:16,680 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 5 selfloop transitions, 7 changer transitions 23/54 dead transitions. [2021-06-10 21:31:16,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 54 transitions, 609 flow [2021-06-10 21:31:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:31:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:31:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2021-06-10 21:31:16,681 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7506053268765133 [2021-06-10 21:31:16,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2021-06-10 21:31:16,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2021-06-10 21:31:16,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:16,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2021-06-10 21:31:16,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 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 21:31:16,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 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 21:31:16,684 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 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 21:31:16,684 INFO L185 Difference]: Start difference. First operand has 59 places, 44 transitions, 505 flow. Second operand 7 states and 620 transitions. [2021-06-10 21:31:16,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 54 transitions, 609 flow [2021-06-10 21:31:16,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 554 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-06-10 21:31:16,689 INFO L241 Difference]: Finished difference. Result has 65 places, 31 transitions, 369 flow [2021-06-10 21:31:16,689 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=65, PETRI_TRANSITIONS=31} [2021-06-10 21:31:16,689 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2021-06-10 21:31:16,689 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 31 transitions, 369 flow [2021-06-10 21:31:16,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 21:31:16,690 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:31:16,690 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:31:16,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 21:31:16,690 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:31:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:31:16,690 INFO L82 PathProgramCache]: Analyzing trace with hash 618002270, now seen corresponding path program 1 times [2021-06-10 21:31:16,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:31:16,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976798370] [2021-06-10 21:31:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:31:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:31:16,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:31:16,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:31:16,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:31:16,723 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 21:31:16,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976798370] [2021-06-10 21:31:16,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:31:16,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:31:16,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342787375] [2021-06-10 21:31:16,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:31:16,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:31:16,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:31:16,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:31:16,726 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 118 [2021-06-10 21:31:16,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 31 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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 21:31:16,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:31:16,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 118 [2021-06-10 21:31:16,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:31:16,756 INFO L129 PetriNetUnfolder]: 21/81 cut-off events. [2021-06-10 21:31:16,757 INFO L130 PetriNetUnfolder]: For 451/577 co-relation queries the response was YES. [2021-06-10 21:31:16,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 81 events. 21/81 cut-off events. For 451/577 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 300 event pairs, 0 based on Foata normal form. 35/113 useless extension candidates. Maximal degree in co-relation 466. Up to 58 conditions per place. [2021-06-10 21:31:16,759 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2021-06-10 21:31:16,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 34 transitions, 411 flow [2021-06-10 21:31:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:31:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:31:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2021-06-10 21:31:16,760 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7397094430992736 [2021-06-10 21:31:16,760 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2021-06-10 21:31:16,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2021-06-10 21:31:16,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:31:16,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2021-06-10 21:31:16,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:31:16,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 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 21:31:16,764 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 118.0) internal successors, (944), 8 states have internal predecessors, (944), 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 21:31:16,764 INFO L185 Difference]: Start difference. First operand has 65 places, 31 transitions, 369 flow. Second operand 7 states and 611 transitions. [2021-06-10 21:31:16,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 34 transitions, 411 flow [2021-06-10 21:31:16,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 34 transitions, 268 flow, removed 18 selfloop flow, removed 14 redundant places. [2021-06-10 21:31:16,766 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2021-06-10 21:31:16,766 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2021-06-10 21:31:16,766 INFO L343 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2021-06-10 21:31:16,766 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2021-06-10 21:31:16,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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 21:31:16,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 21:31:16,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:31:16 BasicIcfg [2021-06-10 21:31:16,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:31:16,770 INFO L168 Benchmark]: Toolchain (without parser) took 4214.09 ms. Allocated memory was 400.6 MB in the beginning and 482.3 MB in the end (delta: 81.8 MB). Free memory was 362.5 MB in the beginning and 203.9 MB in the end (delta: 158.6 MB). Peak memory consumption was 242.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:31:16,770 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 400.6 MB. Free memory was 380.6 MB in the beginning and 380.5 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:31:16,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.68 ms. Allocated memory is still 400.6 MB. Free memory was 362.4 MB in the beginning and 362.2 MB in the end (delta: 186.8 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:31:16,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.22 ms. Allocated memory is still 400.6 MB. Free memory was 362.2 MB in the beginning and 361.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:31:16,771 INFO L168 Benchmark]: Boogie Preprocessor took 14.43 ms. Allocated memory is still 400.6 MB. Free memory was 360.1 MB in the beginning and 359.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:31:16,771 INFO L168 Benchmark]: RCFGBuilder took 309.22 ms. Allocated memory is still 400.6 MB. Free memory was 359.0 MB in the beginning and 334.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:31:16,773 INFO L168 Benchmark]: TraceAbstraction took 3486.14 ms. Allocated memory was 400.6 MB in the beginning and 482.3 MB in the end (delta: 81.8 MB). Free memory was 334.9 MB in the beginning and 203.9 MB in the end (delta: 131.0 MB). Peak memory consumption was 216.0 MB. Max. memory is 16.0 GB. [2021-06-10 21:31:16,776 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 400.6 MB. Free memory was 380.6 MB in the beginning and 380.5 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 355.68 ms. Allocated memory is still 400.6 MB. Free memory was 362.4 MB in the beginning and 362.2 MB in the end (delta: 186.8 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.22 ms. Allocated memory is still 400.6 MB. Free memory was 362.2 MB in the beginning and 361.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.43 ms. Allocated memory is still 400.6 MB. Free memory was 360.1 MB in the beginning and 359.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 309.22 ms. Allocated memory is still 400.6 MB. Free memory was 359.0 MB in the beginning and 334.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3486.14 ms. Allocated memory was 400.6 MB in the beginning and 482.3 MB in the end (delta: 81.8 MB). Free memory was 334.9 MB in the beginning and 203.9 MB in the end (delta: 131.0 MB). Peak memory consumption was 216.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2097.1ms, 67 PlacesBefore, 27 PlacesAfterwards, 58 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 45 TotalNumberOfCompositions, 1792 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1024, positive: 941, positive conditional: 0, positive unconditional: 941, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 671, positive: 621, positive conditional: 0, positive unconditional: 621, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 671, positive: 621, positive conditional: 0, positive unconditional: 621, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 671, positive: 607, positive conditional: 0, positive unconditional: 607, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 220, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 154, negative conditional: 0, negative unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1024, positive: 320, positive conditional: 0, positive unconditional: 320, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 671, unknown conditional: 0, unknown unconditional: 671] , Statistics on independence cache: Total cache size (in pairs): 1158, Positive cache size: 1108, Positive conditional cache size: 0, Positive unconditional cache size: 1108, Negative cache size: 50, Negative conditional cache size: 0, Negative unconditional cache size: 50 - 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, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3418.9ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 561.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2148.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 81 SDtfs, 22 SDslu, 33 SDs, 0 SdLazy, 127 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=520occurred in iteration=8, InterpolantAutomatonStates: 46, 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: 19.4ms SsaConstructionTime, 129.4ms SatisfiabilityAnalysisTime, 387.1ms InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...