/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 15:06:15,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 15:06:15,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 15:06:15,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 15:06:15,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 15:06:15,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 15:06:15,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 15:06:15,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 15:06:15,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 15:06:15,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 15:06:15,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 15:06:15,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 15:06:15,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 15:06:15,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 15:06:15,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 15:06:15,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 15:06:15,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 15:06:15,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 15:06:15,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 15:06:15,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 15:06:15,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 15:06:15,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 15:06:15,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 15:06:15,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 15:06:15,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 15:06:15,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 15:06:15,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 15:06:15,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 15:06:15,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 15:06:15,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 15:06:15,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 15:06:15,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 15:06:15,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 15:06:15,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 15:06:15,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 15:06:15,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 15:06:15,612 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-RepeatedSemanticLbe.epf [2021-03-25 15:06:15,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 15:06:15,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 15:06:15,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 15:06:15,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 15:06:15,633 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 15:06:15,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 15:06:15,634 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 15:06:15,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 15:06:15,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 15:06:15,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 15:06:15,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 15:06:15,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 15:06:15,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 15:06:15,635 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 15:06:15,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 15:06:15,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 15:06:15,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 15:06:15,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 15:06:15,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 15:06:15,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 15:06:15,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 15:06:15,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:06:15,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 15:06:15,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 15:06:15,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 15:06:15,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 15:06:15,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 15:06:15,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 15:06:15,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 15:06:15,639 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 15:06:15,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 15:06:16,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 15:06:16,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 15:06:16,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 15:06:16,019 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 15:06:16,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2021-03-25 15:06:16,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324c754a3/5f3b43be09204c62b591a1dd3d16c82f/FLAG9739dd813 [2021-03-25 15:06:16,569 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 15:06:16,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.oepc.i [2021-03-25 15:06:16,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324c754a3/5f3b43be09204c62b591a1dd3d16c82f/FLAG9739dd813 [2021-03-25 15:06:17,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324c754a3/5f3b43be09204c62b591a1dd3d16c82f [2021-03-25 15:06:17,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 15:06:17,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 15:06:17,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 15:06:17,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 15:06:17,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 15:06:17,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df29f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17, skipping insertion in model container [2021-03-25 15:06:17,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 15:06:17,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 15:06:17,283 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/thin002_tso.oepc.i[950,963] [2021-03-25 15:06:17,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:06:17,459 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 15:06:17,470 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/thin002_tso.oepc.i[950,963] [2021-03-25 15:06:17,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:06:17,586 INFO L208 MainTranslator]: Completed translation [2021-03-25 15:06:17,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17 WrapperNode [2021-03-25 15:06:17,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 15:06:17,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 15:06:17,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 15:06:17,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 15:06:17,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 15:06:17,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 15:06:17,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 15:06:17,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 15:06:17,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... [2021-03-25 15:06:17,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 15:06:17,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 15:06:17,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 15:06:17,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 15:06:17,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:06:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 15:06:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 15:06:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 15:06:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 15:06:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 15:06:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 15:06:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 15:06:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 15:06:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 15:06:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 15:06:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-25 15:06:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-25 15:06:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 15:06:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 15:06:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 15:06:17,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 15:06:17,762 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 15:06:18,057 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 15:06:18,057 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 15:06:18,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:06:18 BoogieIcfgContainer [2021-03-25 15:06:18,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 15:06:18,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 15:06:18,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 15:06:18,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 15:06:18,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 03:06:17" (1/3) ... [2021-03-25 15:06:18,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393dbbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:06:18, skipping insertion in model container [2021-03-25 15:06:18,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:06:17" (2/3) ... [2021-03-25 15:06:18,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393dbbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:06:18, skipping insertion in model container [2021-03-25 15:06:18,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:06:18" (3/3) ... [2021-03-25 15:06:18,064 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2021-03-25 15:06:18,069 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 15:06:18,072 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 15:06:18,073 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 15:06:18,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,109 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,109 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,113 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,113 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,113 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,113 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,114 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,114 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,114 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,114 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,115 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,115 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,115 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,115 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,115 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,115 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,115 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,116 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,116 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,117 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,118 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,118 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,121 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,121 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,122 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,122 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,123 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,123 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,123 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,124 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:06:18,126 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 15:06:18,141 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 15:06:18,157 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 15:06:18,158 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 15:06:18,158 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 15:06:18,158 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 15:06:18,158 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 15:06:18,158 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 15:06:18,158 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 15:06:18,158 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 15:06:18,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2021-03-25 15:06:18,198 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-03-25 15:06:18,198 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:06:18,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-03-25 15:06:18,201 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 91 transitions, 202 flow [2021-03-25 15:06:18,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 73 transitions, 158 flow [2021-03-25 15:06:18,206 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:06:18,216 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-25 15:06:18,218 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-25 15:06:18,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 73 transitions, 158 flow [2021-03-25 15:06:18,239 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-03-25 15:06:18,239 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:06:18,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 15:06:18,242 INFO L142 LiptonReduction]: Number of co-enabled transitions 1392 [2021-03-25 15:06:19,763 INFO L154 LiptonReduction]: Checked pairs total: 1938 [2021-03-25 15:06:19,763 INFO L156 LiptonReduction]: Total number of compositions: 46 [2021-03-25 15:06:19,765 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1560 [2021-03-25 15:06:19,781 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-25 15:06:19,781 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:06:19,781 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:06:19,782 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:06:19,782 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:06:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:06:19,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1692446056, now seen corresponding path program 1 times [2021-03-25 15:06:19,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:06:19,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800657476] [2021-03-25 15:06:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:06:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:06:20,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:20,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:06:20,015 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 15:06:20,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 15:06:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:06:20,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800657476] [2021-03-25 15:06:20,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:06:20,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:06:20,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844715129] [2021-03-25 15:06:20,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:06:20,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:06:20,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:06:20,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:06:20,059 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-25 15:06:20,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:20,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:06:20,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-25 15:06:20,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:06:20,121 INFO L129 PetriNetUnfolder]: 45/141 cut-off events. [2021-03-25 15:06:20,121 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:06:20,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 141 events. 45/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 606 event pairs, 23 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 216. Up to 76 conditions per place. [2021-03-25 15:06:20,126 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 6 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2021-03-25 15:06:20,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 96 flow [2021-03-25 15:06:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:06:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:06:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-03-25 15:06:20,142 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8467153284671532 [2021-03-25 15:06:20,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-03-25 15:06:20,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-03-25 15:06:20,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:06:20,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-03-25 15:06:20,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:20,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:20,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:20,169 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 66 flow. Second operand 3 states and 348 transitions. [2021-03-25 15:06:20,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 96 flow [2021-03-25 15:06:20,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 15:06:20,173 INFO L241 Difference]: Finished difference. Result has 39 places, 31 transitions, 95 flow [2021-03-25 15:06:20,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, 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=95, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2021-03-25 15:06:20,175 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2021-03-25 15:06:20,175 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:06:20,175 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 31 transitions, 95 flow [2021-03-25 15:06:20,175 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 31 transitions, 95 flow [2021-03-25 15:06:20,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 31 transitions, 95 flow [2021-03-25 15:06:20,200 INFO L129 PetriNetUnfolder]: 45/141 cut-off events. [2021-03-25 15:06:20,200 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 15:06:20,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 141 events. 45/141 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 588 event pairs, 23 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 220. Up to 76 conditions per place. [2021-03-25 15:06:20,204 INFO L142 LiptonReduction]: Number of co-enabled transitions 268 [2021-03-25 15:06:20,740 INFO L154 LiptonReduction]: Checked pairs total: 480 [2021-03-25 15:06:20,741 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 15:06:20,750 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 574 [2021-03-25 15:06:20,750 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 87 flow [2021-03-25 15:06:20,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:20,751 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:06:20,751 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:06:20,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 15:06:20,751 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:06:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:06:20,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2088650593, now seen corresponding path program 1 times [2021-03-25 15:06:20,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:06:20,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820730407] [2021-03-25 15:06:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:06:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:06:20,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:20,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:06:20,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:20,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:06:20,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820730407] [2021-03-25 15:06:20,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:06:20,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:06:20,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8171368] [2021-03-25 15:06:20,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:06:20,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:06:20,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:06:20,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:06:20,815 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 141 [2021-03-25 15:06:20,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:20,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:06:20,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 141 [2021-03-25 15:06:20,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:06:20,828 INFO L129 PetriNetUnfolder]: 29/98 cut-off events. [2021-03-25 15:06:20,829 INFO L130 PetriNetUnfolder]: For 22/46 co-relation queries the response was YES. [2021-03-25 15:06:20,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 98 events. 29/98 cut-off events. For 22/46 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 370 event pairs, 14 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 173. Up to 53 conditions per place. [2021-03-25 15:06:20,830 INFO L132 encePairwiseOnDemand]: 138/141 looper letters, 1 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2021-03-25 15:06:20,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 95 flow [2021-03-25 15:06:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:06:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:06:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2021-03-25 15:06:20,832 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9101654846335697 [2021-03-25 15:06:20,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2021-03-25 15:06:20,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2021-03-25 15:06:20,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:06:20,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2021-03-25 15:06:20,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:20,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:20,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:20,837 INFO L185 Difference]: Start difference. First operand has 35 places, 27 transitions, 87 flow. Second operand 3 states and 385 transitions. [2021-03-25 15:06:20,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 95 flow [2021-03-25 15:06:20,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 90 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 15:06:20,839 INFO L241 Difference]: Finished difference. Result has 37 places, 27 transitions, 93 flow [2021-03-25 15:06:20,839 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2021-03-25 15:06:20,839 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2021-03-25 15:06:20,840 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:06:20,840 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 27 transitions, 93 flow [2021-03-25 15:06:20,840 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 27 transitions, 93 flow [2021-03-25 15:06:20,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 27 transitions, 93 flow [2021-03-25 15:06:20,847 INFO L129 PetriNetUnfolder]: 29/106 cut-off events. [2021-03-25 15:06:20,847 INFO L130 PetriNetUnfolder]: For 16/19 co-relation queries the response was YES. [2021-03-25 15:06:20,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 106 events. 29/106 cut-off events. For 16/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 444 event pairs, 18 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 185. Up to 53 conditions per place. [2021-03-25 15:06:20,849 INFO L142 LiptonReduction]: Number of co-enabled transitions 236 [2021-03-25 15:06:21,028 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2021-03-25 15:06:21,258 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2021-03-25 15:06:21,362 INFO L154 LiptonReduction]: Checked pairs total: 316 [2021-03-25 15:06:21,362 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:06:21,363 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 523 [2021-03-25 15:06:21,364 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 91 flow [2021-03-25 15:06:21,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,365 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:06:21,365 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:06:21,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 15:06:21,365 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:06:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:06:21,369 INFO L82 PathProgramCache]: Analyzing trace with hash -2079597034, now seen corresponding path program 1 times [2021-03-25 15:06:21,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:06:21,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360610672] [2021-03-25 15:06:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:06:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:06:21,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:21,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:06:21,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:21,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:21,467 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 15:06:21,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 15:06:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:06:21,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360610672] [2021-03-25 15:06:21,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:06:21,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:06:21,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323328630] [2021-03-25 15:06:21,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:06:21,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:06:21,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:06:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:06:21,478 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 142 [2021-03-25 15:06:21,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:06:21,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 142 [2021-03-25 15:06:21,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:06:21,539 INFO L129 PetriNetUnfolder]: 52/165 cut-off events. [2021-03-25 15:06:21,539 INFO L130 PetriNetUnfolder]: For 86/471 co-relation queries the response was YES. [2021-03-25 15:06:21,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 165 events. 52/165 cut-off events. For 86/471 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 836 event pairs, 12 based on Foata normal form. 17/172 useless extension candidates. Maximal degree in co-relation 382. Up to 82 conditions per place. [2021-03-25 15:06:21,544 INFO L132 encePairwiseOnDemand]: 135/142 looper letters, 9 selfloop transitions, 12 changer transitions 0/36 dead transitions. [2021-03-25 15:06:21,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 176 flow [2021-03-25 15:06:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 15:06:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 15:06:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2021-03-25 15:06:21,548 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7887323943661971 [2021-03-25 15:06:21,548 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2021-03-25 15:06:21,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2021-03-25 15:06:21,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:06:21,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2021-03-25 15:06:21,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,555 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 91 flow. Second operand 5 states and 560 transitions. [2021-03-25 15:06:21,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 176 flow [2021-03-25 15:06:21,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 15:06:21,557 INFO L241 Difference]: Finished difference. Result has 41 places, 33 transitions, 172 flow [2021-03-25 15:06:21,558 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2021-03-25 15:06:21,558 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2021-03-25 15:06:21,558 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:06:21,558 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 33 transitions, 172 flow [2021-03-25 15:06:21,559 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 33 transitions, 172 flow [2021-03-25 15:06:21,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 33 transitions, 172 flow [2021-03-25 15:06:21,576 INFO L129 PetriNetUnfolder]: 41/143 cut-off events. [2021-03-25 15:06:21,576 INFO L130 PetriNetUnfolder]: For 111/225 co-relation queries the response was YES. [2021-03-25 15:06:21,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 143 events. 41/143 cut-off events. For 111/225 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 721 event pairs, 9 based on Foata normal form. 1/139 useless extension candidates. Maximal degree in co-relation 394. Up to 73 conditions per place. [2021-03-25 15:06:21,580 INFO L142 LiptonReduction]: Number of co-enabled transitions 344 [2021-03-25 15:06:21,583 INFO L154 LiptonReduction]: Checked pairs total: 208 [2021-03-25 15:06:21,583 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:06:21,583 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-25 15:06:21,588 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 172 flow [2021-03-25 15:06:21,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,589 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:06:21,589 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:06:21,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 15:06:21,589 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:06:21,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:06:21,590 INFO L82 PathProgramCache]: Analyzing trace with hash -155894057, now seen corresponding path program 1 times [2021-03-25 15:06:21,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:06:21,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079336867] [2021-03-25 15:06:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:06:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:06:21,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:21,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:21,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:21,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:21,671 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 15:06:21,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 15:06:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:06:21,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079336867] [2021-03-25 15:06:21,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:06:21,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:06:21,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030198434] [2021-03-25 15:06:21,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:06:21,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:06:21,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:06:21,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:06:21,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 142 [2021-03-25 15:06:21,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:06:21,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 142 [2021-03-25 15:06:21,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:06:21,714 INFO L129 PetriNetUnfolder]: 39/154 cut-off events. [2021-03-25 15:06:21,714 INFO L130 PetriNetUnfolder]: For 347/1308 co-relation queries the response was YES. [2021-03-25 15:06:21,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 154 events. 39/154 cut-off events. For 347/1308 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 854 event pairs, 3 based on Foata normal form. 18/164 useless extension candidates. Maximal degree in co-relation 474. Up to 70 conditions per place. [2021-03-25 15:06:21,716 INFO L132 encePairwiseOnDemand]: 138/142 looper letters, 11 selfloop transitions, 3 changer transitions 8/37 dead transitions. [2021-03-25 15:06:21,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 248 flow [2021-03-25 15:06:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:06:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:06:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2021-03-25 15:06:21,717 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7852112676056338 [2021-03-25 15:06:21,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2021-03-25 15:06:21,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2021-03-25 15:06:21,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:06:21,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2021-03-25 15:06:21,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,721 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,721 INFO L185 Difference]: Start difference. First operand has 41 places, 33 transitions, 172 flow. Second operand 4 states and 446 transitions. [2021-03-25 15:06:21,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 248 flow [2021-03-25 15:06:21,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 240 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 15:06:21,723 INFO L241 Difference]: Finished difference. Result has 45 places, 25 transitions, 126 flow [2021-03-25 15:06:21,723 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=25} [2021-03-25 15:06:21,724 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2021-03-25 15:06:21,724 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:06:21,724 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 25 transitions, 126 flow [2021-03-25 15:06:21,724 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 25 transitions, 126 flow [2021-03-25 15:06:21,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 25 transitions, 126 flow [2021-03-25 15:06:21,729 INFO L129 PetriNetUnfolder]: 13/59 cut-off events. [2021-03-25 15:06:21,729 INFO L130 PetriNetUnfolder]: For 93/112 co-relation queries the response was YES. [2021-03-25 15:06:21,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 59 events. 13/59 cut-off events. For 93/112 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 207 event pairs, 5 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 173. Up to 29 conditions per place. [2021-03-25 15:06:21,731 INFO L142 LiptonReduction]: Number of co-enabled transitions 210 [2021-03-25 15:06:21,732 INFO L154 LiptonReduction]: Checked pairs total: 128 [2021-03-25 15:06:21,732 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:06:21,732 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-25 15:06:21,733 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 126 flow [2021-03-25 15:06:21,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,734 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:06:21,734 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:06:21,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 15:06:21,734 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:06:21,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:06:21,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1206573239, now seen corresponding path program 1 times [2021-03-25 15:06:21,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:06:21,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413665665] [2021-03-25 15:06:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:06:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:06:21,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:21,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:21,767 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 15:06:21,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 15:06:21,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:06:21,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413665665] [2021-03-25 15:06:21,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:06:21,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:06:21,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774045047] [2021-03-25 15:06:21,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:06:21,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:06:21,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:06:21,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:06:21,778 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 142 [2021-03-25 15:06:21,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:06:21,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 142 [2021-03-25 15:06:21,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:06:21,793 INFO L129 PetriNetUnfolder]: 10/56 cut-off events. [2021-03-25 15:06:21,794 INFO L130 PetriNetUnfolder]: For 147/236 co-relation queries the response was YES. [2021-03-25 15:06:21,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 56 events. 10/56 cut-off events. For 147/236 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 170 event pairs, 2 based on Foata normal form. 4/58 useless extension candidates. Maximal degree in co-relation 166. Up to 24 conditions per place. [2021-03-25 15:06:21,794 INFO L132 encePairwiseOnDemand]: 139/142 looper letters, 9 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2021-03-25 15:06:21,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 28 transitions, 174 flow [2021-03-25 15:06:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:06:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:06:21,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2021-03-25 15:06:21,796 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8192488262910798 [2021-03-25 15:06:21,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2021-03-25 15:06:21,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2021-03-25 15:06:21,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:06:21,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2021-03-25 15:06:21,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,799 INFO L185 Difference]: Start difference. First operand has 44 places, 25 transitions, 126 flow. Second operand 3 states and 349 transitions. [2021-03-25 15:06:21,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 28 transitions, 174 flow [2021-03-25 15:06:21,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 120 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-03-25 15:06:21,801 INFO L241 Difference]: Finished difference. Result has 38 places, 25 transitions, 93 flow [2021-03-25 15:06:21,801 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2021-03-25 15:06:21,801 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2021-03-25 15:06:21,802 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:06:21,802 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 25 transitions, 93 flow [2021-03-25 15:06:21,802 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 25 transitions, 93 flow [2021-03-25 15:06:21,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 25 transitions, 93 flow [2021-03-25 15:06:21,806 INFO L129 PetriNetUnfolder]: 10/54 cut-off events. [2021-03-25 15:06:21,806 INFO L130 PetriNetUnfolder]: For 14/22 co-relation queries the response was YES. [2021-03-25 15:06:21,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 54 events. 10/54 cut-off events. For 14/22 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 174 event pairs, 6 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 102. Up to 24 conditions per place. [2021-03-25 15:06:21,807 INFO L142 LiptonReduction]: Number of co-enabled transitions 210 [2021-03-25 15:06:21,885 INFO L154 LiptonReduction]: Checked pairs total: 225 [2021-03-25 15:06:21,885 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 15:06:21,886 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 84 [2021-03-25 15:06:21,886 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 92 flow [2021-03-25 15:06:21,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,886 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:06:21,886 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:06:21,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 15:06:21,887 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:06:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:06:21,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1639921362, now seen corresponding path program 1 times [2021-03-25 15:06:21,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:06:21,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405585294] [2021-03-25 15:06:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:06:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:06:21,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:21,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:21,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:21,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:06:21,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405585294] [2021-03-25 15:06:21,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:06:21,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:06:21,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925420239] [2021-03-25 15:06:21,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:06:21,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:06:21,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:06:21,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:06:21,923 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 144 [2021-03-25 15:06:21,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:06:21,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 144 [2021-03-25 15:06:21,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:06:21,939 INFO L129 PetriNetUnfolder]: 11/62 cut-off events. [2021-03-25 15:06:21,939 INFO L130 PetriNetUnfolder]: For 60/93 co-relation queries the response was YES. [2021-03-25 15:06:21,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 62 events. 11/62 cut-off events. For 60/93 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 231 event pairs, 7 based on Foata normal form. 5/63 useless extension candidates. Maximal degree in co-relation 134. Up to 27 conditions per place. [2021-03-25 15:06:21,940 INFO L132 encePairwiseOnDemand]: 140/144 looper letters, 1 selfloop transitions, 3 changer transitions 2/25 dead transitions. [2021-03-25 15:06:21,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 111 flow [2021-03-25 15:06:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:06:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:06:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2021-03-25 15:06:21,941 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.859375 [2021-03-25 15:06:21,942 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2021-03-25 15:06:21,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2021-03-25 15:06:21,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:06:21,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2021-03-25 15:06:21,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,945 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,945 INFO L185 Difference]: Start difference. First operand has 37 places, 24 transitions, 92 flow. Second operand 4 states and 495 transitions. [2021-03-25 15:06:21,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 111 flow [2021-03-25 15:06:21,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 25 transitions, 103 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 15:06:21,946 INFO L241 Difference]: Finished difference. Result has 40 places, 23 transitions, 95 flow [2021-03-25 15:06:21,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2021-03-25 15:06:21,946 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2021-03-25 15:06:21,946 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:06:21,947 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 23 transitions, 95 flow [2021-03-25 15:06:21,947 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 23 transitions, 95 flow [2021-03-25 15:06:21,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 23 transitions, 95 flow [2021-03-25 15:06:21,950 INFO L129 PetriNetUnfolder]: 4/35 cut-off events. [2021-03-25 15:06:21,950 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-25 15:06:21,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 35 events. 4/35 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 3 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 74. Up to 14 conditions per place. [2021-03-25 15:06:21,951 INFO L142 LiptonReduction]: Number of co-enabled transitions 158 [2021-03-25 15:06:21,952 INFO L154 LiptonReduction]: Checked pairs total: 95 [2021-03-25 15:06:21,952 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:06:21,952 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 15:06:21,953 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 95 flow [2021-03-25 15:06:21,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,953 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:06:21,953 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:06:21,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 15:06:21,953 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:06:21,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:06:21,954 INFO L82 PathProgramCache]: Analyzing trace with hash -613017943, now seen corresponding path program 1 times [2021-03-25 15:06:21,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:06:21,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011788694] [2021-03-25 15:06:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:06:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:06:21,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:21,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:21,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:21,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:06:21,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011788694] [2021-03-25 15:06:21,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:06:21,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:06:21,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566101393] [2021-03-25 15:06:21,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:06:21,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:06:21,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:06:21,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:06:21,992 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 144 [2021-03-25 15:06:21,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:21,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:06:21,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 144 [2021-03-25 15:06:21,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:06:22,013 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2021-03-25 15:06:22,014 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-03-25 15:06:22,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 41 events. 3/41 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 2 based on Foata normal form. 3/43 useless extension candidates. Maximal degree in co-relation 90. Up to 15 conditions per place. [2021-03-25 15:06:22,014 INFO L132 encePairwiseOnDemand]: 140/144 looper letters, 1 selfloop transitions, 3 changer transitions 3/24 dead transitions. [2021-03-25 15:06:22,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 24 transitions, 112 flow [2021-03-25 15:06:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:06:22,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:06:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2021-03-25 15:06:22,016 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8541666666666666 [2021-03-25 15:06:22,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 492 transitions. [2021-03-25 15:06:22,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 492 transitions. [2021-03-25 15:06:22,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:06:22,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 492 transitions. [2021-03-25 15:06:22,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:22,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:22,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:22,019 INFO L185 Difference]: Start difference. First operand has 40 places, 23 transitions, 95 flow. Second operand 4 states and 492 transitions. [2021-03-25 15:06:22,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 24 transitions, 112 flow [2021-03-25 15:06:22,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 24 transitions, 96 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-03-25 15:06:22,020 INFO L241 Difference]: Finished difference. Result has 40 places, 21 transitions, 84 flow [2021-03-25 15:06:22,020 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=21} [2021-03-25 15:06:22,020 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2021-03-25 15:06:22,021 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:06:22,021 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 21 transitions, 84 flow [2021-03-25 15:06:22,021 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 21 transitions, 84 flow [2021-03-25 15:06:22,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 21 transitions, 84 flow [2021-03-25 15:06:22,023 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 15:06:22,023 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 15:06:22,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 21 events. 0/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-25 15:06:22,024 INFO L142 LiptonReduction]: Number of co-enabled transitions 66 [2021-03-25 15:06:22,095 INFO L154 LiptonReduction]: Checked pairs total: 73 [2021-03-25 15:06:22,095 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 15:06:22,095 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 74 [2021-03-25 15:06:22,100 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 78 flow [2021-03-25 15:06:22,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:22,101 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:06:22,101 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:06:22,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 15:06:22,101 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:06:22,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:06:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash 862101634, now seen corresponding path program 1 times [2021-03-25 15:06:22,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:06:22,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309808602] [2021-03-25 15:06:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:06:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:06:22,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:22,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:22,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:06:22,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:06:22,157 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 15:06:22,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 15:06:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:06:22,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309808602] [2021-03-25 15:06:22,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:06:22,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:06:22,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344570806] [2021-03-25 15:06:22,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:06:22,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:06:22,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:06:22,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:06:22,168 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 147 [2021-03-25 15:06:22,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:22,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:06:22,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 147 [2021-03-25 15:06:22,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:06:22,185 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 15:06:22,185 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-03-25 15:06:22,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 17 events. 0/17 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 2/19 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 15:06:22,185 INFO L132 encePairwiseOnDemand]: 144/147 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2021-03-25 15:06:22,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 17 transitions, 80 flow [2021-03-25 15:06:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:06:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:06:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2021-03-25 15:06:22,187 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7482993197278912 [2021-03-25 15:06:22,187 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2021-03-25 15:06:22,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2021-03-25 15:06:22,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:06:22,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2021-03-25 15:06:22,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:22,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:22,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:22,190 INFO L185 Difference]: Start difference. First operand has 37 places, 18 transitions, 78 flow. Second operand 4 states and 440 transitions. [2021-03-25 15:06:22,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 17 transitions, 80 flow [2021-03-25 15:06:22,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 54 flow, removed 3 selfloop flow, removed 10 redundant places. [2021-03-25 15:06:22,190 INFO L241 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2021-03-25 15:06:22,191 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2021-03-25 15:06:22,191 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -11 predicate places. [2021-03-25 15:06:22,191 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:06:22,191 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-25 15:06:22,191 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 0 transitions, 0 flow [2021-03-25 15:06:22,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 15:06:22,191 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 15:06:22,192 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:06:22,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 15:06:22,192 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 15:06:22,192 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 15:06:22,192 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:06:22,192 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 15:06:22,196 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 15:06:22,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:06:22,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 15:06:22,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 03:06:22 BasicIcfg [2021-03-25 15:06:22,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 15:06:22,204 INFO L168 Benchmark]: Toolchain (without parser) took 5149.04 ms. Allocated memory was 255.9 MB in the beginning and 440.4 MB in the end (delta: 184.5 MB). Free memory was 234.2 MB in the beginning and 346.3 MB in the end (delta: -112.1 MB). Peak memory consumption was 73.5 MB. Max. memory is 16.0 GB. [2021-03-25 15:06:22,204 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:06:22,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.81 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.7 MB in the beginning and 325.1 MB in the end (delta: -91.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-25 15:06:22,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.17 ms. Allocated memory is still 362.8 MB. Free memory was 325.1 MB in the beginning and 323.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:06:22,205 INFO L168 Benchmark]: Boogie Preprocessor took 31.95 ms. Allocated memory is still 362.8 MB. Free memory was 323.1 MB in the beginning and 321.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:06:22,206 INFO L168 Benchmark]: RCFGBuilder took 372.70 ms. Allocated memory is still 362.8 MB. Free memory was 321.8 MB in the beginning and 337.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.0 GB. [2021-03-25 15:06:22,206 INFO L168 Benchmark]: TraceAbstraction took 4142.71 ms. Allocated memory was 362.8 MB in the beginning and 440.4 MB in the end (delta: 77.6 MB). Free memory was 336.9 MB in the beginning and 346.3 MB in the end (delta: -9.4 MB). Peak memory consumption was 68.7 MB. Max. memory is 16.0 GB. [2021-03-25 15:06:22,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 536.81 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 233.7 MB in the beginning and 325.1 MB in the end (delta: -91.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 60.17 ms. Allocated memory is still 362.8 MB. Free memory was 325.1 MB in the beginning and 323.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.95 ms. Allocated memory is still 362.8 MB. Free memory was 323.1 MB in the beginning and 321.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 372.70 ms. Allocated memory is still 362.8 MB. Free memory was 321.8 MB in the beginning and 337.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4142.71 ms. Allocated memory was 362.8 MB in the beginning and 440.4 MB in the end (delta: 77.6 MB). Free memory was 336.9 MB in the beginning and 346.3 MB in the end (delta: -9.4 MB). Peak memory consumption was 68.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1544.9ms, 85 PlacesBefore, 40 PlacesAfterwards, 73 TransitionsBefore, 27 TransitionsAfterwards, 1392 CoEnabledTransitionPairs, 4 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1133, positive: 1081, positive conditional: 0, positive unconditional: 1081, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 882, positive: 846, positive conditional: 0, positive unconditional: 846, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 882, positive: 846, positive conditional: 0, positive unconditional: 846, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 882, positive: 835, positive conditional: 0, positive unconditional: 835, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 162, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 114, negative conditional: 0, negative unconditional: 114, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1133, positive: 235, positive conditional: 0, positive unconditional: 235, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 882, unknown conditional: 0, unknown unconditional: 882] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 573.8ms, 39 PlacesBefore, 35 PlacesAfterwards, 31 TransitionsBefore, 27 TransitionsAfterwards, 268 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 480 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 288, positive: 257, positive conditional: 0, positive unconditional: 257, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 63, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 63, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 63, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 79, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 288, positive: 204, positive conditional: 0, positive unconditional: 204, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 63, unknown conditional: 0, unknown unconditional: 63] , Statistics on independence cache: Total cache size (in pairs): 150, Positive cache size: 136, Positive conditional cache size: 0, Positive unconditional cache size: 136, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 522.5ms, 37 PlacesBefore, 36 PlacesAfterwards, 27 TransitionsBefore, 26 TransitionsAfterwards, 236 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 316 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 154, positive: 132, positive conditional: 0, positive unconditional: 132, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 154, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 151, Positive cache size: 137, Positive conditional cache size: 0, Positive unconditional cache size: 137, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.0ms, 41 PlacesBefore, 41 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 344 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 208 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 80, positive: 69, positive conditional: 0, positive unconditional: 69, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 80, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 138, Positive conditional cache size: 0, Positive unconditional cache size: 138, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3ms, 45 PlacesBefore, 44 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 210 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 128 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 68, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 68, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 154, Positive cache size: 140, Positive conditional cache size: 0, Positive unconditional cache size: 140, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 83.5ms, 38 PlacesBefore, 37 PlacesAfterwards, 25 TransitionsBefore, 24 TransitionsAfterwards, 210 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 102, positive: 86, positive conditional: 0, positive unconditional: 86, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 102, positive: 85, positive conditional: 0, positive unconditional: 85, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 131, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0ms, 40 PlacesBefore, 40 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 158 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 95 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 36, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 131, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 74.5ms, 40 PlacesBefore, 37 PlacesAfterwards, 21 TransitionsBefore, 18 TransitionsAfterwards, 66 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 73 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 24, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 29 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4042.5ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 373.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1611.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 30 SDslu, 16 SDs, 0 SdLazy, 50 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=3, InterpolantAutomatonStates: 30, 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: 20.7ms SsaConstructionTime, 131.6ms SatisfiabilityAnalysisTime, 411.1ms InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 668 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...