/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 00:06:35,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 00:06:35,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 00:06:35,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-29 00:06:35,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-29 00:06:35,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-29 00:06:35,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-29 00:06:35,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-29 00:06:35,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-29 00:06:35,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-29 00:06:35,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-29 00:06:35,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-29 00:06:35,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 00:06:35,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 00:06:35,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 00:06:35,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 00:06:35,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 00:06:35,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 00:06:35,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 00:06:35,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 00:06:35,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 00:06:35,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 00:06:35,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 00:06:35,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 00:06:35,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 00:06:35,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 00:06:35,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 00:06:35,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 00:06:35,639 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-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 00:06:35,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 00:06:35,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 00:06:35,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 00:06:35,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 00:06:35,697 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 00:06:35,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 00:06:35,700 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 00:06:35,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 00:06:35,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 00:06:35,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 00:06:35,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 00:06:35,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 00:06:35,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 00:06:35,702 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 00:06:35,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 00:06:35,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 00:06:35,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 00:06:35,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 00:06:35,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 00:06:35,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 00:06:35,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 00:06:35,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:06:35,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 00:06:35,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 00:06:35,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 00:06:35,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 00:06:35,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 00:06:35,706 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 00:06:35,707 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 00:06:35,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 00:06:35,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 00:06:36,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 00:06:36,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 00:06:36,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 00:06:36,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 00:06:36,221 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 00:06:36,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-04-29 00:06:36,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593005ba2/dfa7cf22459a48519fb6a222ece07e2e/FLAG56e371721 [2021-04-29 00:06:37,022 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 00:06:37,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-04-29 00:06:37,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593005ba2/dfa7cf22459a48519fb6a222ece07e2e/FLAG56e371721 [2021-04-29 00:06:37,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593005ba2/dfa7cf22459a48519fb6a222ece07e2e [2021-04-29 00:06:37,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 00:06:37,348 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 00:06:37,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 00:06:37,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 00:06:37,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 00:06:37,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:06:37" (1/1) ... [2021-04-29 00:06:37,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20620c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:37, skipping insertion in model container [2021-04-29 00:06:37,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:06:37" (1/1) ... [2021-04-29 00:06:37,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 00:06:37,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 00:06:37,677 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/safe017_tso.opt.i[949,962] [2021-04-29 00:06:37,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:06:37,924 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 00:06:37,942 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/safe017_tso.opt.i[949,962] [2021-04-29 00:06:37,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:06:38,126 INFO L208 MainTranslator]: Completed translation [2021-04-29 00:06:38,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38 WrapperNode [2021-04-29 00:06:38,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 00:06:38,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 00:06:38,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 00:06:38,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 00:06:38,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (1/1) ... [2021-04-29 00:06:38,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (1/1) ... [2021-04-29 00:06:38,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 00:06:38,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 00:06:38,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 00:06:38,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 00:06:38,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (1/1) ... [2021-04-29 00:06:38,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (1/1) ... [2021-04-29 00:06:38,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (1/1) ... [2021-04-29 00:06:38,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (1/1) ... [2021-04-29 00:06:38,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (1/1) ... [2021-04-29 00:06:38,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (1/1) ... [2021-04-29 00:06:38,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (1/1) ... [2021-04-29 00:06:38,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 00:06:38,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 00:06:38,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 00:06:38,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 00:06:38,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (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 [2021-04-29 00:06:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 00:06:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 00:06:38,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 00:06:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 00:06:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-29 00:06:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-29 00:06:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-29 00:06:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-29 00:06:38,335 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-29 00:06:38,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-29 00:06:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 00:06:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 00:06:38,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 00:06:38,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 00:06:38,338 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 00:06:38,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 00:06:38,765 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-29 00:06:38,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:06:38 BoogieIcfgContainer [2021-04-29 00:06:38,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 00:06:38,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 00:06:38,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 00:06:38,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 00:06:38,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 12:06:37" (1/3) ... [2021-04-29 00:06:38,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eff3a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:06:38, skipping insertion in model container [2021-04-29 00:06:38,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:06:38" (2/3) ... [2021-04-29 00:06:38,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eff3a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:06:38, skipping insertion in model container [2021-04-29 00:06:38,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:06:38" (3/3) ... [2021-04-29 00:06:38,782 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2021-04-29 00:06:38,798 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 00:06:38,805 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 00:06:38,806 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 00:06:38,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,889 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,889 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,889 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,890 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,891 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,891 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,891 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,891 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,891 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,892 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,895 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,897 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,899 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,899 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,900 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,900 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,907 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,916 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,916 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,916 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:06:38,926 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 00:06:38,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 00:06:38,998 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 00:06:38,998 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 00:06:38,999 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 00:06:38,999 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 00:06:38,999 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 00:06:38,999 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 00:06:38,999 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 00:06:38,999 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 00:06:39,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-04-29 00:06:39,102 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-04-29 00:06:39,102 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:39,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-04-29 00:06:39,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 72 transitions, 159 flow [2021-04-29 00:06:39,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2021-04-29 00:06:39,121 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:39,138 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2021-04-29 00:06:39,143 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2021-04-29 00:06:39,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2021-04-29 00:06:39,178 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-04-29 00:06:39,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:39,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-04-29 00:06:39,182 INFO L146 LiptonReduction]: Number of co-enabled transitions 804 [2021-04-29 00:06:43,241 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:06:45,293 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:06:45,457 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:06:45,871 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:06:47,295 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:47,463 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:47,632 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:47,804 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:47,976 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:48,148 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:48,323 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:06:48,665 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-04-29 00:06:48,916 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-04-29 00:06:49,106 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:49,275 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:49,674 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:49,848 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:06:50,059 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-04-29 00:06:50,305 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2021-04-29 00:06:50,424 INFO L158 LiptonReduction]: Checked pairs total: 7301 [2021-04-29 00:06:50,424 INFO L160 LiptonReduction]: Total number of compositions: 116 [2021-04-29 00:06:50,428 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11309 [2021-04-29 00:06:50,450 INFO L129 PetriNetUnfolder]: 0/64 cut-off events. [2021-04-29 00:06:50,450 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:50,450 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:50,451 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:50,452 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:50,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:50,458 INFO L82 PathProgramCache]: Analyzing trace with hash -199458746, now seen corresponding path program 1 times [2021-04-29 00:06:50,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:50,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784832890] [2021-04-29 00:06:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:50,777 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:06:50,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:50,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784832890] [2021-04-29 00:06:50,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:50,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:06:50,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112666700] [2021-04-29 00:06:50,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:06:50,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:50,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:06:50,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:06:50,836 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 188 [2021-04-29 00:06:50,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2021-04-29 00:06:50,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:50,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 188 [2021-04-29 00:06:50,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:51,051 INFO L129 PetriNetUnfolder]: 278/904 cut-off events. [2021-04-29 00:06:51,052 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:51,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1404 conditions, 904 events. 278/904 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 8229 event pairs, 112 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 1352. Up to 293 conditions per place. [2021-04-29 00:06:51,063 INFO L132 encePairwiseOnDemand]: 167/188 looper letters, 6 selfloop transitions, 6 changer transitions 42/85 dead transitions. [2021-04-29 00:06:51,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 251 flow [2021-04-29 00:06:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:06:51,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:06:51,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2021-04-29 00:06:51,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6631205673758865 [2021-04-29 00:06:51,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2021-04-29 00:06:51,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2021-04-29 00:06:51,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:51,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2021-04-29 00:06:51,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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) [2021-04-29 00:06:51,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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) [2021-04-29 00:06:51,102 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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) [2021-04-29 00:06:51,105 INFO L185 Difference]: Start difference. First operand has 85 places, 75 transitions, 159 flow. Second operand 3 states and 374 transitions. [2021-04-29 00:06:51,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 251 flow [2021-04-29 00:06:51,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 00:06:51,112 INFO L241 Difference]: Finished difference. Result has 86 places, 43 transitions, 128 flow [2021-04-29 00:06:51,115 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=86, PETRI_TRANSITIONS=43} [2021-04-29 00:06:51,116 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, 1 predicate places. [2021-04-29 00:06:51,116 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:51,116 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 43 transitions, 128 flow [2021-04-29 00:06:51,117 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 43 transitions, 128 flow [2021-04-29 00:06:51,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 43 transitions, 128 flow [2021-04-29 00:06:51,139 INFO L129 PetriNetUnfolder]: 45/209 cut-off events. [2021-04-29 00:06:51,140 INFO L130 PetriNetUnfolder]: For 13/15 co-relation queries the response was YES. [2021-04-29 00:06:51,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 209 events. 45/209 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1322 event pairs, 17 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 349. Up to 62 conditions per place. [2021-04-29 00:06:51,145 INFO L146 LiptonReduction]: Number of co-enabled transitions 932 [2021-04-29 00:06:51,151 INFO L158 LiptonReduction]: Checked pairs total: 22 [2021-04-29 00:06:51,152 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:51,152 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-04-29 00:06:51,158 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 128 flow [2021-04-29 00:06:51,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2021-04-29 00:06:51,159 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:51,159 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:51,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 00:06:51,159 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:51,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2125702475, now seen corresponding path program 1 times [2021-04-29 00:06:51,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:51,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868038323] [2021-04-29 00:06:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:51,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:51,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:51,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868038323] [2021-04-29 00:06:51,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:51,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:06:51,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679722665] [2021-04-29 00:06:51,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:06:51,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:51,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:06:51,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:06:51,257 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 188 [2021-04-29 00:06:51,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2021-04-29 00:06:51,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:51,258 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 188 [2021-04-29 00:06:51,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:51,283 INFO L129 PetriNetUnfolder]: 36/176 cut-off events. [2021-04-29 00:06:51,284 INFO L130 PetriNetUnfolder]: For 41/48 co-relation queries the response was YES. [2021-04-29 00:06:51,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 176 events. 36/176 cut-off events. For 41/48 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1027 event pairs, 15 based on Foata normal form. 1/111 useless extension candidates. Maximal degree in co-relation 313. Up to 49 conditions per place. [2021-04-29 00:06:51,286 INFO L132 encePairwiseOnDemand]: 185/188 looper letters, 1 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2021-04-29 00:06:51,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 136 flow [2021-04-29 00:06:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:06:51,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:06:51,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2021-04-29 00:06:51,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2021-04-29 00:06:51,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2021-04-29 00:06:51,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2021-04-29 00:06:51,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:51,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2021-04-29 00:06:51,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:51,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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) [2021-04-29 00:06:51,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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) [2021-04-29 00:06:51,298 INFO L185 Difference]: Start difference. First operand has 49 places, 43 transitions, 128 flow. Second operand 3 states and 388 transitions. [2021-04-29 00:06:51,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 136 flow [2021-04-29 00:06:51,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:06:51,302 INFO L241 Difference]: Finished difference. Result has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:51,302 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2021-04-29 00:06:51,303 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -35 predicate places. [2021-04-29 00:06:51,303 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:51,303 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:51,304 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:51,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:51,322 INFO L129 PetriNetUnfolder]: 36/179 cut-off events. [2021-04-29 00:06:51,322 INFO L130 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2021-04-29 00:06:51,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 179 events. 36/179 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1068 event pairs, 11 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 283. Up to 49 conditions per place. [2021-04-29 00:06:51,330 INFO L146 LiptonReduction]: Number of co-enabled transitions 930 [2021-04-29 00:06:51,335 INFO L158 LiptonReduction]: Checked pairs total: 22 [2021-04-29 00:06:51,336 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:51,336 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-04-29 00:06:51,338 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 127 flow [2021-04-29 00:06:51,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2021-04-29 00:06:51,339 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:51,339 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:51,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 00:06:51,339 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:51,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1888286041, now seen corresponding path program 1 times [2021-04-29 00:06:51,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:51,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693312423] [2021-04-29 00:06:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:51,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:51,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:51,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693312423] [2021-04-29 00:06:51,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:51,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:06:51,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979358965] [2021-04-29 00:06:51,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:06:51,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:51,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:06:51,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:06:51,396 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 188 [2021-04-29 00:06:51,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2021-04-29 00:06:51,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:51,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 188 [2021-04-29 00:06:51,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:51,424 INFO L129 PetriNetUnfolder]: 30/163 cut-off events. [2021-04-29 00:06:51,424 INFO L130 PetriNetUnfolder]: For 41/46 co-relation queries the response was YES. [2021-04-29 00:06:51,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 163 events. 30/163 cut-off events. For 41/46 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 937 event pairs, 6 based on Foata normal form. 3/102 useless extension candidates. Maximal degree in co-relation 285. Up to 41 conditions per place. [2021-04-29 00:06:51,426 INFO L132 encePairwiseOnDemand]: 184/188 looper letters, 5 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2021-04-29 00:06:51,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 157 flow [2021-04-29 00:06:51,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:06:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:06:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2021-04-29 00:06:51,429 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7464539007092199 [2021-04-29 00:06:51,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2021-04-29 00:06:51,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2021-04-29 00:06:51,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:51,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2021-04-29 00:06:51,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:51,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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) [2021-04-29 00:06:51,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 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) [2021-04-29 00:06:51,436 INFO L185 Difference]: Start difference. First operand has 50 places, 43 transitions, 127 flow. Second operand 3 states and 421 transitions. [2021-04-29 00:06:51,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 157 flow [2021-04-29 00:06:51,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:06:51,440 INFO L241 Difference]: Finished difference. Result has 51 places, 46 transitions, 153 flow [2021-04-29 00:06:51,440 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2021-04-29 00:06:51,440 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -34 predicate places. [2021-04-29 00:06:51,440 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:51,441 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 46 transitions, 153 flow [2021-04-29 00:06:51,441 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 46 transitions, 153 flow [2021-04-29 00:06:51,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 153 flow [2021-04-29 00:06:51,459 INFO L129 PetriNetUnfolder]: 30/166 cut-off events. [2021-04-29 00:06:51,459 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-04-29 00:06:51,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 166 events. 30/166 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 990 event pairs, 8 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 283. Up to 41 conditions per place. [2021-04-29 00:06:51,464 INFO L146 LiptonReduction]: Number of co-enabled transitions 1018 [2021-04-29 00:06:51,470 INFO L158 LiptonReduction]: Checked pairs total: 25 [2021-04-29 00:06:51,470 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:51,470 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-04-29 00:06:51,472 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 153 flow [2021-04-29 00:06:51,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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) [2021-04-29 00:06:51,473 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:51,473 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:51,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 00:06:51,473 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:51,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:51,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1593626664, now seen corresponding path program 1 times [2021-04-29 00:06:51,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:51,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394110095] [2021-04-29 00:06:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:51,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:51,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:51,522 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:06:51,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:51,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394110095] [2021-04-29 00:06:51,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:51,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:06:51,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213759954] [2021-04-29 00:06:51,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:51,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:51,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:51,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:51,534 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 188 [2021-04-29 00:06:51,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:51,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:51,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 188 [2021-04-29 00:06:51,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:51,576 INFO L129 PetriNetUnfolder]: 23/149 cut-off events. [2021-04-29 00:06:51,577 INFO L130 PetriNetUnfolder]: For 41/75 co-relation queries the response was YES. [2021-04-29 00:06:51,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 149 events. 23/149 cut-off events. For 41/75 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 840 event pairs, 1 based on Foata normal form. 8/97 useless extension candidates. Maximal degree in co-relation 307. Up to 35 conditions per place. [2021-04-29 00:06:51,579 INFO L132 encePairwiseOnDemand]: 181/188 looper letters, 14 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2021-04-29 00:06:51,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 255 flow [2021-04-29 00:06:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:06:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:06:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2021-04-29 00:06:51,582 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6196808510638298 [2021-04-29 00:06:51,582 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 466 transitions. [2021-04-29 00:06:51,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 466 transitions. [2021-04-29 00:06:51,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:51,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 466 transitions. [2021-04-29 00:06:51,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 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) [2021-04-29 00:06:51,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2021-04-29 00:06:51,588 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2021-04-29 00:06:51,588 INFO L185 Difference]: Start difference. First operand has 51 places, 46 transitions, 153 flow. Second operand 4 states and 466 transitions. [2021-04-29 00:06:51,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 255 flow [2021-04-29 00:06:51,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 249 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 00:06:51,592 INFO L241 Difference]: Finished difference. Result has 56 places, 54 transitions, 246 flow [2021-04-29 00:06:51,593 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2021-04-29 00:06:51,593 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -29 predicate places. [2021-04-29 00:06:51,593 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:51,593 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 54 transitions, 246 flow [2021-04-29 00:06:51,594 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 54 transitions, 246 flow [2021-04-29 00:06:51,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 54 transitions, 246 flow [2021-04-29 00:06:51,611 INFO L129 PetriNetUnfolder]: 23/143 cut-off events. [2021-04-29 00:06:51,611 INFO L130 PetriNetUnfolder]: For 92/94 co-relation queries the response was YES. [2021-04-29 00:06:51,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 143 events. 23/143 cut-off events. For 92/94 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 805 event pairs, 2 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 312. Up to 35 conditions per place. [2021-04-29 00:06:51,616 INFO L146 LiptonReduction]: Number of co-enabled transitions 1260 [2021-04-29 00:06:51,624 INFO L158 LiptonReduction]: Checked pairs total: 33 [2021-04-29 00:06:51,624 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:51,625 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-04-29 00:06:51,626 INFO L480 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 246 flow [2021-04-29 00:06:51,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:51,627 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:51,627 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:51,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 00:06:51,628 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:51,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2127994830, now seen corresponding path program 1 times [2021-04-29 00:06:51,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:51,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112512065] [2021-04-29 00:06:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:51,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:51,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:06:51,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:51,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:51,704 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:06:51,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:51,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112512065] [2021-04-29 00:06:51,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:51,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:06:51,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679342006] [2021-04-29 00:06:51,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:51,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:51,722 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 188 [2021-04-29 00:06:51,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 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) [2021-04-29 00:06:51,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:51,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 188 [2021-04-29 00:06:51,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:51,779 INFO L129 PetriNetUnfolder]: 19/149 cut-off events. [2021-04-29 00:06:51,779 INFO L130 PetriNetUnfolder]: For 134/184 co-relation queries the response was YES. [2021-04-29 00:06:51,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 149 events. 19/149 cut-off events. For 134/184 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 881 event pairs, 2 based on Foata normal form. 20/106 useless extension candidates. Maximal degree in co-relation 363. Up to 32 conditions per place. [2021-04-29 00:06:51,782 INFO L132 encePairwiseOnDemand]: 181/188 looper letters, 8 selfloop transitions, 16 changer transitions 0/55 dead transitions. [2021-04-29 00:06:51,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 304 flow [2021-04-29 00:06:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:06:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:06:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2021-04-29 00:06:51,785 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6156914893617021 [2021-04-29 00:06:51,785 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2021-04-29 00:06:51,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2021-04-29 00:06:51,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:51,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2021-04-29 00:06:51,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2021-04-29 00:06:51,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2021-04-29 00:06:51,791 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2021-04-29 00:06:51,791 INFO L185 Difference]: Start difference. First operand has 56 places, 54 transitions, 246 flow. Second operand 4 states and 463 transitions. [2021-04-29 00:06:51,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 304 flow [2021-04-29 00:06:51,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 302 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-04-29 00:06:51,796 INFO L241 Difference]: Finished difference. Result has 61 places, 55 transitions, 310 flow [2021-04-29 00:06:51,797 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2021-04-29 00:06:51,797 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -24 predicate places. [2021-04-29 00:06:51,797 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:51,797 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 55 transitions, 310 flow [2021-04-29 00:06:51,798 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 55 transitions, 310 flow [2021-04-29 00:06:51,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 310 flow [2021-04-29 00:06:51,816 INFO L129 PetriNetUnfolder]: 19/137 cut-off events. [2021-04-29 00:06:51,816 INFO L130 PetriNetUnfolder]: For 184/193 co-relation queries the response was YES. [2021-04-29 00:06:51,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 137 events. 19/137 cut-off events. For 184/193 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 779 event pairs, 2 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 351. Up to 32 conditions per place. [2021-04-29 00:06:51,821 INFO L146 LiptonReduction]: Number of co-enabled transitions 1294 [2021-04-29 00:06:51,830 INFO L158 LiptonReduction]: Checked pairs total: 34 [2021-04-29 00:06:51,830 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:51,830 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-04-29 00:06:51,832 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 310 flow [2021-04-29 00:06:51,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 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) [2021-04-29 00:06:51,833 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:51,833 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:51,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 00:06:51,833 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1605381329, now seen corresponding path program 1 times [2021-04-29 00:06:51,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:51,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850623451] [2021-04-29 00:06:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:51,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:51,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:51,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:51,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:51,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850623451] [2021-04-29 00:06:51,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:51,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:06:51,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847137501] [2021-04-29 00:06:51,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:51,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:51,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:51,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:51,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 188 [2021-04-29 00:06:51,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-04-29 00:06:51,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:51,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 188 [2021-04-29 00:06:51,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:51,935 INFO L129 PetriNetUnfolder]: 17/178 cut-off events. [2021-04-29 00:06:51,935 INFO L130 PetriNetUnfolder]: For 321/356 co-relation queries the response was YES. [2021-04-29 00:06:51,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 178 events. 17/178 cut-off events. For 321/356 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1194 event pairs, 0 based on Foata normal form. 12/114 useless extension candidates. Maximal degree in co-relation 465. Up to 33 conditions per place. [2021-04-29 00:06:51,937 INFO L132 encePairwiseOnDemand]: 183/188 looper letters, 6 selfloop transitions, 6 changer transitions 11/59 dead transitions. [2021-04-29 00:06:51,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 382 flow [2021-04-29 00:06:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:06:51,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:06:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2021-04-29 00:06:51,940 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6316489361702128 [2021-04-29 00:06:51,940 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2021-04-29 00:06:51,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2021-04-29 00:06:51,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:51,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2021-04-29 00:06:51,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 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) [2021-04-29 00:06:51,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2021-04-29 00:06:51,946 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2021-04-29 00:06:51,946 INFO L185 Difference]: Start difference. First operand has 61 places, 55 transitions, 310 flow. Second operand 4 states and 475 transitions. [2021-04-29 00:06:51,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 382 flow [2021-04-29 00:06:51,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 374 flow, removed 4 selfloop flow, removed 0 redundant places. [2021-04-29 00:06:51,951 INFO L241 Difference]: Finished difference. Result has 65 places, 47 transitions, 261 flow [2021-04-29 00:06:51,951 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2021-04-29 00:06:51,951 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -20 predicate places. [2021-04-29 00:06:51,952 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:51,952 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 47 transitions, 261 flow [2021-04-29 00:06:51,952 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 47 transitions, 261 flow [2021-04-29 00:06:51,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 47 transitions, 261 flow [2021-04-29 00:06:51,967 INFO L129 PetriNetUnfolder]: 8/104 cut-off events. [2021-04-29 00:06:51,967 INFO L130 PetriNetUnfolder]: For 173/179 co-relation queries the response was YES. [2021-04-29 00:06:51,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 104 events. 8/104 cut-off events. For 173/179 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 554 event pairs, 1 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 264. Up to 19 conditions per place. [2021-04-29 00:06:51,971 INFO L146 LiptonReduction]: Number of co-enabled transitions 972 [2021-04-29 00:06:51,978 INFO L158 LiptonReduction]: Checked pairs total: 26 [2021-04-29 00:06:51,978 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:51,978 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-04-29 00:06:51,980 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 261 flow [2021-04-29 00:06:51,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2021-04-29 00:06:51,980 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:51,981 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:51,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 00:06:51,981 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:51,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:51,982 INFO L82 PathProgramCache]: Analyzing trace with hash -2137178645, now seen corresponding path program 2 times [2021-04-29 00:06:51,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:51,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261108151] [2021-04-29 00:06:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:52,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:52,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:52,059 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:06:52,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:52,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261108151] [2021-04-29 00:06:52,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:52,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:06:52,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237442914] [2021-04-29 00:06:52,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:52,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:52,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:52,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:52,080 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 188 [2021-04-29 00:06:52,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2021-04-29 00:06:52,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:52,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 188 [2021-04-29 00:06:52,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:53,585 INFO L129 PetriNetUnfolder]: 6852/10946 cut-off events. [2021-04-29 00:06:53,585 INFO L130 PetriNetUnfolder]: For 5663/6497 co-relation queries the response was YES. [2021-04-29 00:06:53,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22732 conditions, 10946 events. 6852/10946 cut-off events. For 5663/6497 co-relation queries the response was YES. Maximal size of possible extension queue 2391. Compared 94008 event pairs, 3150 based on Foata normal form. 109/2897 useless extension candidates. Maximal degree in co-relation 22708. Up to 7171 conditions per place. [2021-04-29 00:06:53,754 INFO L132 encePairwiseOnDemand]: 170/188 looper letters, 20 selfloop transitions, 24 changer transitions 12/82 dead transitions. [2021-04-29 00:06:53,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 443 flow [2021-04-29 00:06:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:06:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:06:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 601 transitions. [2021-04-29 00:06:53,758 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6393617021276595 [2021-04-29 00:06:53,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 601 transitions. [2021-04-29 00:06:53,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 601 transitions. [2021-04-29 00:06:53,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:53,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 601 transitions. [2021-04-29 00:06:53,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.2) internal successors, (601), 5 states have internal predecessors, (601), 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) [2021-04-29 00:06:53,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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) [2021-04-29 00:06:53,766 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 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) [2021-04-29 00:06:53,766 INFO L185 Difference]: Start difference. First operand has 63 places, 47 transitions, 261 flow. Second operand 5 states and 601 transitions. [2021-04-29 00:06:53,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 443 flow [2021-04-29 00:06:53,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 82 transitions, 411 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-04-29 00:06:53,775 INFO L241 Difference]: Finished difference. Result has 65 places, 69 transitions, 402 flow [2021-04-29 00:06:53,775 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2021-04-29 00:06:53,775 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -20 predicate places. [2021-04-29 00:06:53,775 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:53,776 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 69 transitions, 402 flow [2021-04-29 00:06:53,776 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 69 transitions, 402 flow [2021-04-29 00:06:53,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 69 transitions, 402 flow [2021-04-29 00:06:54,103 INFO L129 PetriNetUnfolder]: 429/2318 cut-off events. [2021-04-29 00:06:54,103 INFO L130 PetriNetUnfolder]: For 1971/3305 co-relation queries the response was YES. [2021-04-29 00:06:54,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 2318 events. 429/2318 cut-off events. For 1971/3305 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 32786 event pairs, 276 based on Foata normal form. 5/699 useless extension candidates. Maximal degree in co-relation 6278. Up to 1523 conditions per place. [2021-04-29 00:06:54,165 INFO L146 LiptonReduction]: Number of co-enabled transitions 1390 [2021-04-29 00:06:54,180 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:06:54,180 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:54,180 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 405 [2021-04-29 00:06:54,181 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 402 flow [2021-04-29 00:06:54,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2021-04-29 00:06:54,182 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:54,182 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:54,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 00:06:54,183 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:54,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:54,183 INFO L82 PathProgramCache]: Analyzing trace with hash -389170988, now seen corresponding path program 1 times [2021-04-29 00:06:54,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:54,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112454276] [2021-04-29 00:06:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:54,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:54,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:54,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:54,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:54,230 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:06:54,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:54,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112454276] [2021-04-29 00:06:54,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:54,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:06:54,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694758297] [2021-04-29 00:06:54,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:06:54,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:54,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:06:54,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:06:54,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 188 [2021-04-29 00:06:54,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 402 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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) [2021-04-29 00:06:54,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:54,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 188 [2021-04-29 00:06:54,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:55,960 INFO L129 PetriNetUnfolder]: 4590/8867 cut-off events. [2021-04-29 00:06:55,960 INFO L130 PetriNetUnfolder]: For 9194/24419 co-relation queries the response was YES. [2021-04-29 00:06:56,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29629 conditions, 8867 events. 4590/8867 cut-off events. For 9194/24419 co-relation queries the response was YES. Maximal size of possible extension queue 2691. Compared 90504 event pairs, 675 based on Foata normal form. 156/2844 useless extension candidates. Maximal degree in co-relation 29605. Up to 4771 conditions per place. [2021-04-29 00:06:56,070 INFO L132 encePairwiseOnDemand]: 170/188 looper letters, 13 selfloop transitions, 36 changer transitions 34/105 dead transitions. [2021-04-29 00:06:56,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 719 flow [2021-04-29 00:06:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 00:06:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 00:06:56,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 840 transitions. [2021-04-29 00:06:56,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2021-04-29 00:06:56,075 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 840 transitions. [2021-04-29 00:06:56,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 840 transitions. [2021-04-29 00:06:56,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:56,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 840 transitions. [2021-04-29 00:06:56,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 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) [2021-04-29 00:06:56,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2021-04-29 00:06:56,083 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 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) [2021-04-29 00:06:56,084 INFO L185 Difference]: Start difference. First operand has 65 places, 69 transitions, 402 flow. Second operand 7 states and 840 transitions. [2021-04-29 00:06:56,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 719 flow [2021-04-29 00:06:56,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 719 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-04-29 00:06:56,135 INFO L241 Difference]: Finished difference. Result has 74 places, 70 transitions, 546 flow [2021-04-29 00:06:56,135 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2021-04-29 00:06:56,135 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -11 predicate places. [2021-04-29 00:06:56,135 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:56,136 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 70 transitions, 546 flow [2021-04-29 00:06:56,136 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 70 transitions, 546 flow [2021-04-29 00:06:56,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 70 transitions, 546 flow [2021-04-29 00:06:56,305 INFO L129 PetriNetUnfolder]: 574/1302 cut-off events. [2021-04-29 00:06:56,305 INFO L130 PetriNetUnfolder]: For 4618/7118 co-relation queries the response was YES. [2021-04-29 00:06:56,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 1302 events. 574/1302 cut-off events. For 4618/7118 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 10703 event pairs, 108 based on Foata normal form. 8/574 useless extension candidates. Maximal degree in co-relation 5752. Up to 1114 conditions per place. [2021-04-29 00:06:56,334 INFO L146 LiptonReduction]: Number of co-enabled transitions 940 [2021-04-29 00:06:56,356 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:06:56,356 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:56,356 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 221 [2021-04-29 00:06:56,357 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 546 flow [2021-04-29 00:06:56,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 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) [2021-04-29 00:06:56,358 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:56,358 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:56,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 00:06:56,359 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:56,364 INFO L82 PathProgramCache]: Analyzing trace with hash -446559813, now seen corresponding path program 1 times [2021-04-29 00:06:56,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:56,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13998114] [2021-04-29 00:06:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:56,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:56,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:56,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:56,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:56,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:56,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:56,471 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-04-29 00:06:56,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:56,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13998114] [2021-04-29 00:06:56,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:56,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:06:56,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842775148] [2021-04-29 00:06:56,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 00:06:56,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:56,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 00:06:56,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 00:06:56,486 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 188 [2021-04-29 00:06:56,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 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) [2021-04-29 00:06:56,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:56,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 188 [2021-04-29 00:06:56,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:56,988 INFO L129 PetriNetUnfolder]: 841/1719 cut-off events. [2021-04-29 00:06:56,989 INFO L130 PetriNetUnfolder]: For 8071/43699 co-relation queries the response was YES. [2021-04-29 00:06:56,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8369 conditions, 1719 events. 841/1719 cut-off events. For 8071/43699 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 13892 event pairs, 0 based on Foata normal form. 153/908 useless extension candidates. Maximal degree in co-relation 8340. Up to 1384 conditions per place. [2021-04-29 00:06:57,001 INFO L132 encePairwiseOnDemand]: 172/188 looper letters, 2 selfloop transitions, 28 changer transitions 41/83 dead transitions. [2021-04-29 00:06:57,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 758 flow [2021-04-29 00:06:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 00:06:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 00:06:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1040 transitions. [2021-04-29 00:06:57,006 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6146572104018913 [2021-04-29 00:06:57,007 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1040 transitions. [2021-04-29 00:06:57,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1040 transitions. [2021-04-29 00:06:57,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:57,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1040 transitions. [2021-04-29 00:06:57,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 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) [2021-04-29 00:06:57,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 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) [2021-04-29 00:06:57,016 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 188.0) internal successors, (1880), 10 states have internal predecessors, (1880), 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) [2021-04-29 00:06:57,017 INFO L185 Difference]: Start difference. First operand has 71 places, 70 transitions, 546 flow. Second operand 9 states and 1040 transitions. [2021-04-29 00:06:57,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 758 flow [2021-04-29 00:06:57,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 661 flow, removed 21 selfloop flow, removed 7 redundant places. [2021-04-29 00:06:57,066 INFO L241 Difference]: Finished difference. Result has 75 places, 42 transitions, 354 flow [2021-04-29 00:06:57,066 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=75, PETRI_TRANSITIONS=42} [2021-04-29 00:06:57,067 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -10 predicate places. [2021-04-29 00:06:57,067 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:57,067 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 42 transitions, 354 flow [2021-04-29 00:06:57,068 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 42 transitions, 354 flow [2021-04-29 00:06:57,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 42 transitions, 354 flow [2021-04-29 00:06:57,103 INFO L129 PetriNetUnfolder]: 90/233 cut-off events. [2021-04-29 00:06:57,104 INFO L130 PetriNetUnfolder]: For 969/996 co-relation queries the response was YES. [2021-04-29 00:06:57,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 233 events. 90/233 cut-off events. For 969/996 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1228 event pairs, 0 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 1177. Up to 181 conditions per place. [2021-04-29 00:06:57,110 INFO L146 LiptonReduction]: Number of co-enabled transitions 244 [2021-04-29 00:06:57,122 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:06:57,122 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:57,122 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55 [2021-04-29 00:06:57,123 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 354 flow [2021-04-29 00:06:57,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 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) [2021-04-29 00:06:57,124 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:06:57,125 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:06:57,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-29 00:06:57,125 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:06:57,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:06:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash 55169510, now seen corresponding path program 1 times [2021-04-29 00:06:57,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:06:57,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760691368] [2021-04-29 00:06:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:06:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:06:57,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:57,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:06:57,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:06:57,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:06:57,212 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:06:57,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:06:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:06:57,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760691368] [2021-04-29 00:06:57,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:06:57,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:06:57,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626249180] [2021-04-29 00:06:57,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:06:57,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:06:57,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:06:57,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:06:57,230 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 188 [2021-04-29 00:06:57,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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) [2021-04-29 00:06:57,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:06:57,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 188 [2021-04-29 00:06:57,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:06:57,278 INFO L129 PetriNetUnfolder]: 90/206 cut-off events. [2021-04-29 00:06:57,279 INFO L130 PetriNetUnfolder]: For 1197/1244 co-relation queries the response was YES. [2021-04-29 00:06:57,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 206 events. 90/206 cut-off events. For 1197/1244 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 972 event pairs, 0 based on Foata normal form. 29/115 useless extension candidates. Maximal degree in co-relation 951. Up to 181 conditions per place. [2021-04-29 00:06:57,280 INFO L132 encePairwiseOnDemand]: 181/188 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2021-04-29 00:06:57,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 42 transitions, 359 flow [2021-04-29 00:06:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:06:57,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:06:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2021-04-29 00:06:57,284 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2021-04-29 00:06:57,284 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2021-04-29 00:06:57,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2021-04-29 00:06:57,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:06:57,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2021-04-29 00:06:57,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:06:57,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2021-04-29 00:06:57,291 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 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) [2021-04-29 00:06:57,292 INFO L185 Difference]: Start difference. First operand has 58 places, 42 transitions, 354 flow. Second operand 4 states and 456 transitions. [2021-04-29 00:06:57,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 42 transitions, 359 flow [2021-04-29 00:06:57,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 209 flow, removed 32 selfloop flow, removed 17 redundant places. [2021-04-29 00:06:57,298 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-04-29 00:06:57,299 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-04-29 00:06:57,300 INFO L343 CegarLoopForPetriNet]: 85 programPoint places, -42 predicate places. [2021-04-29 00:06:57,300 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:06:57,300 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 0 transitions, 0 flow [2021-04-29 00:06:57,300 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 0 transitions, 0 flow [2021-04-29 00:06:57,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 00:06:57,301 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 00:06:57,301 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:06:57,301 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. [2021-04-29 00:06:57,302 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 00:06:57,302 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:06:57,302 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:06:57,302 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 00:06:57,303 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 00:06:57,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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) [2021-04-29 00:06:57,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-29 00:06:57,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 12:06:57 BasicIcfg [2021-04-29 00:06:57,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 00:06:57,310 INFO L168 Benchmark]: Toolchain (without parser) took 20015.45 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 838.9 MB). Free memory was 275.5 MB in the beginning and 945.3 MB in the end (delta: -669.8 MB). Peak memory consumption was 171.5 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:57,310 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:06:57,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.92 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 269.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:57,312 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.34 ms. Allocated memory is still 302.0 MB. Free memory was 269.9 MB in the beginning and 268.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:06:57,312 INFO L168 Benchmark]: Boogie Preprocessor took 28.07 ms. Allocated memory is still 302.0 MB. Free memory was 268.8 MB in the beginning and 266.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:57,313 INFO L168 Benchmark]: RCFGBuilder took 564.28 ms. Allocated memory is still 302.0 MB. Free memory was 266.9 MB in the beginning and 245.7 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:57,313 INFO L168 Benchmark]: TraceAbstraction took 18539.16 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 838.9 MB). Free memory was 244.8 MB in the beginning and 945.3 MB in the end (delta: -700.5 MB). Peak memory consumption was 140.3 MB. Max. memory is 16.0 GB. [2021-04-29 00:06:57,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 302.0 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 775.92 ms. Allocated memory is still 302.0 MB. Free memory was 272.3 MB in the beginning and 269.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.34 ms. Allocated memory is still 302.0 MB. Free memory was 269.9 MB in the beginning and 268.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.07 ms. Allocated memory is still 302.0 MB. Free memory was 268.8 MB in the beginning and 266.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 564.28 ms. Allocated memory is still 302.0 MB. Free memory was 266.9 MB in the beginning and 245.7 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 18539.16 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 838.9 MB). Free memory was 244.8 MB in the beginning and 945.3 MB in the end (delta: -700.5 MB). Peak memory consumption was 140.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11281.3ms, 66 PlacesBefore, 85 PlacesAfterwards, 57 TransitionsBefore, 75 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 8 FixpointIterations, 69 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 116 TotalNumberOfCompositions, 7301 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2127, positive: 1895, positive conditional: 1895, positive unconditional: 0, negative: 232, negative conditional: 232, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 865, positive: 819, positive conditional: 0, positive unconditional: 819, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 865, positive: 819, positive conditional: 0, positive unconditional: 819, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 865, positive: 785, positive conditional: 0, positive unconditional: 785, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 80, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 397, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 223, negative conditional: 0, negative unconditional: 223, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2127, positive: 1076, positive conditional: 1076, positive unconditional: 0, negative: 186, negative conditional: 186, negative unconditional: 0, unknown: 865, unknown conditional: 865, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.8ms, 86 PlacesBefore, 49 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 932 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 22 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.3ms, 50 PlacesBefore, 50 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 930 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 22 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.0ms, 51 PlacesBefore, 51 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 1018 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 25 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.9ms, 56 PlacesBefore, 56 PlacesAfterwards, 54 TransitionsBefore, 54 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 33 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.5ms, 61 PlacesBefore, 61 PlacesAfterwards, 55 TransitionsBefore, 55 TransitionsAfterwards, 1294 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 34 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.8ms, 65 PlacesBefore, 63 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 972 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 26 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 404.2ms, 65 PlacesBefore, 65 PlacesAfterwards, 69 TransitionsBefore, 69 TransitionsAfterwards, 1390 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): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 220.1ms, 74 PlacesBefore, 71 PlacesAfterwards, 70 TransitionsBefore, 70 TransitionsAfterwards, 940 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): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.4ms, 75 PlacesBefore, 58 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 244 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): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7ms, 43 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): 860, Positive cache size: 814, Positive conditional cache size: 814, Positive unconditional cache size: 0, Negative cache size: 46, Negative conditional cache size: 46, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 18314.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4844.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11437.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 78 SDtfs, 68 SDslu, 21 SDs, 0 SdLazy, 339 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 366.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 146.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=546occurred in iteration=8, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.0ms SsaConstructionTime, 187.2ms SatisfiabilityAnalysisTime, 676.1ms InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...