/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 10:32:54,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 10:32:54,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 10:32:54,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 10:32:54,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 10:32:54,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 10:32:54,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 10:32:54,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 10:32:54,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 10:32:54,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 10:32:54,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 10:32:54,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 10:32:54,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 10:32:54,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 10:32:54,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 10:32:54,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 10:32:54,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 10:32:54,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 10:32:54,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 10:32:54,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 10:32:54,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 10:32:54,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 10:32:54,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 10:32:54,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 10:32:55,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 10:32:55,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 10:32:55,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 10:32:55,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 10:32:55,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 10:32:55,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 10:32:55,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 10:32:55,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 10:32:55,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 10:32:55,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 10:32:55,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 10:32:55,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 10:32:55,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 10:32:55,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 10:32:55,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 10:32:55,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 10:32:55,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 10:32:55,008 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 10:32:55,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 10:32:55,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 10:32:55,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 10:32:55,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 10:32:55,023 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 10:32:55,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 10:32:55,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 10:32:55,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 10:32:55,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 10:32:55,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 10:32:55,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 10:32:55,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 10:32:55,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 10:32:55,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 10:32:55,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 10:32:55,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 10:32:55,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 10:32:55,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 10:32:55,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 10:32:55,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 10:32:55,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 10:32:55,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 10:32:55,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 10:32:55,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 10:32:55,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 10:32:55,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 10:32:55,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 10:32:55,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 10:32:55,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 10:32:55,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 10:32:55,026 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 10:32:55,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 10:32:55,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 10:32:55,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 10:32:55,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 10:32:55,262 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 10:32:55,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-26 10:32:55,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39aad08f1/d2e47aa673de4eb1a8ecabc9816477c1/FLAG6b6934b26 [2021-03-26 10:32:55,754 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 10:32:55,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-26 10:32:55,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39aad08f1/d2e47aa673de4eb1a8ecabc9816477c1/FLAG6b6934b26 [2021-03-26 10:32:55,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39aad08f1/d2e47aa673de4eb1a8ecabc9816477c1 [2021-03-26 10:32:55,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 10:32:55,775 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 10:32:55,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 10:32:55,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 10:32:55,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 10:32:55,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:32:55" (1/1) ... [2021-03-26 10:32:55,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c35b5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:55, skipping insertion in model container [2021-03-26 10:32:55,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:32:55" (1/1) ... [2021-03-26 10:32:55,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 10:32:55,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 10:32:55,905 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/safe014_pso.oepc.i[950,963] [2021-03-26 10:32:56,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:32:56,051 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 10:32:56,059 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/safe014_pso.oepc.i[950,963] [2021-03-26 10:32:56,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:32:56,136 INFO L208 MainTranslator]: Completed translation [2021-03-26 10:32:56,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56 WrapperNode [2021-03-26 10:32:56,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 10:32:56,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 10:32:56,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 10:32:56,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 10:32:56,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... [2021-03-26 10:32:56,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... [2021-03-26 10:32:56,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 10:32:56,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 10:32:56,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 10:32:56,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 10:32:56,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... [2021-03-26 10:32:56,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... [2021-03-26 10:32:56,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... [2021-03-26 10:32:56,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... [2021-03-26 10:32:56,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... [2021-03-26 10:32:56,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... [2021-03-26 10:32:56,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... [2021-03-26 10:32:56,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 10:32:56,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 10:32:56,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 10:32:56,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 10:32:56,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 10:32:56,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 10:32:56,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 10:32:56,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 10:32:56,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 10:32:56,255 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 10:32:56,255 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 10:32:56,256 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 10:32:56,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 10:32:56,256 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 10:32:56,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 10:32:56,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 10:32:56,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 10:32:56,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 10:32:56,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 10:32:56,257 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 10:32:56,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 10:32:56,525 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 10:32:56,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:32:56 BoogieIcfgContainer [2021-03-26 10:32:56,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 10:32:56,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 10:32:56,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 10:32:56,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 10:32:56,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 10:32:55" (1/3) ... [2021-03-26 10:32:56,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f447b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:32:56, skipping insertion in model container [2021-03-26 10:32:56,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:32:56" (2/3) ... [2021-03-26 10:32:56,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f447b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:32:56, skipping insertion in model container [2021-03-26 10:32:56,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:32:56" (3/3) ... [2021-03-26 10:32:56,532 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-03-26 10:32:56,535 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 10:32:56,538 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 10:32:56,538 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 10:32:56,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,559 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,564 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,565 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,565 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,566 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,566 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,567 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,569 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,574 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,579 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,579 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:32:56,583 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 10:32:56,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 10:32:56,619 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 10:32:56,619 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 10:32:56,619 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 10:32:56,619 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 10:32:56,619 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 10:32:56,619 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 10:32:56,619 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 10:32:56,619 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 10:32:56,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 10:32:56,680 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-26 10:32:56,680 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:32:56,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-26 10:32:56,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-26 10:32:56,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-26 10:32:56,696 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:56,708 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 10:32:56,711 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-26 10:32:56,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-26 10:32:56,729 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-26 10:32:56,730 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:32:56,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-26 10:32:56,732 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 10:32:57,927 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-26 10:32:57,927 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-26 10:32:57,929 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1234 [2021-03-26 10:32:57,935 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-26 10:32:57,935 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:32:57,935 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:57,936 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:57,936 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:57,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:57,939 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-26 10:32:57,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:57,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565997635] [2021-03-26 10:32:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:32:58,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:58,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:58,102 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 10:32:58,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 10:32:58,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:58,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:32:58,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565997635] [2021-03-26 10:32:58,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:32:58,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:32:58,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635789343] [2021-03-26 10:32:58,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:32:58,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:32:58,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:32:58,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:32:58,140 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-26 10:32:58,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,148 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:32:58,148 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-26 10:32:58,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:32:58,237 INFO L129 PetriNetUnfolder]: 78/208 cut-off events. [2021-03-26 10:32:58,237 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:32:58,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 208 events. 78/208 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1017 event pairs, 4 based on Foata normal form. 23/218 useless extension candidates. Maximal degree in co-relation 358. Up to 58 conditions per place. [2021-03-26 10:32:58,239 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 6 changer transitions 15/45 dead transitions. [2021-03-26 10:32:58,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 165 flow [2021-03-26 10:32:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:32:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:32:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2021-03-26 10:32:58,248 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7598522167487685 [2021-03-26 10:32:58,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2021-03-26 10:32:58,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2021-03-26 10:32:58,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:32:58,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2021-03-26 10:32:58,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,263 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,264 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 617 transitions. [2021-03-26 10:32:58,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 165 flow [2021-03-26 10:32:58,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 10:32:58,267 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-26 10:32:58,268 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-26 10:32:58,269 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-26 10:32:58,269 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:58,269 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-26 10:32:58,269 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-26 10:32:58,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 25 transitions, 106 flow [2021-03-26 10:32:58,278 INFO L129 PetriNetUnfolder]: 36/118 cut-off events. [2021-03-26 10:32:58,278 INFO L130 PetriNetUnfolder]: For 79/88 co-relation queries the response was YES. [2021-03-26 10:32:58,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 118 events. 36/118 cut-off events. For 79/88 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 512 event pairs, 11 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 289. Up to 42 conditions per place. [2021-03-26 10:32:58,282 INFO L142 LiptonReduction]: Number of co-enabled transitions 154 [2021-03-26 10:32:58,621 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 10:32:58,785 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 10:32:58,841 INFO L154 LiptonReduction]: Checked pairs total: 78 [2021-03-26 10:32:58,841 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 10:32:58,841 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 572 [2021-03-26 10:32:58,842 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 100 flow [2021-03-26 10:32:58,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,843 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:58,843 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:58,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 10:32:58,843 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:58,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:58,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1039221852, now seen corresponding path program 1 times [2021-03-26 10:32:58,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:58,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841314376] [2021-03-26 10:32:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:32:58,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:58,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:32:58,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:58,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:58,894 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 10:32:58,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 10:32:58,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:58,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:58,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:32:58,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841314376] [2021-03-26 10:32:58,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:32:58,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:32:58,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496093983] [2021-03-26 10:32:58,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:32:58,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:32:58,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:32:58,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:32:58,906 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-26 10:32:58,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:32:58,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-26 10:32:58,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:32:58,954 INFO L129 PetriNetUnfolder]: 39/130 cut-off events. [2021-03-26 10:32:58,954 INFO L130 PetriNetUnfolder]: For 214/284 co-relation queries the response was YES. [2021-03-26 10:32:58,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 130 events. 39/130 cut-off events. For 214/284 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 569 event pairs, 1 based on Foata normal form. 14/139 useless extension candidates. Maximal degree in co-relation 413. Up to 48 conditions per place. [2021-03-26 10:32:58,956 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 11 selfloop transitions, 10 changer transitions 11/42 dead transitions. [2021-03-26 10:32:58,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 286 flow [2021-03-26 10:32:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:32:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:32:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2021-03-26 10:32:58,957 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7406962785114045 [2021-03-26 10:32:58,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2021-03-26 10:32:58,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2021-03-26 10:32:58,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:32:58,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2021-03-26 10:32:58,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,961 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,961 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 100 flow. Second operand 7 states and 617 transitions. [2021-03-26 10:32:58,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 286 flow [2021-03-26 10:32:58,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 278 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-26 10:32:58,963 INFO L241 Difference]: Finished difference. Result has 44 places, 27 transitions, 185 flow [2021-03-26 10:32:58,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2021-03-26 10:32:58,964 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2021-03-26 10:32:58,964 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:58,964 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 27 transitions, 185 flow [2021-03-26 10:32:58,964 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 27 transitions, 185 flow [2021-03-26 10:32:58,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 27 transitions, 185 flow [2021-03-26 10:32:58,970 INFO L129 PetriNetUnfolder]: 30/101 cut-off events. [2021-03-26 10:32:58,970 INFO L130 PetriNetUnfolder]: For 225/248 co-relation queries the response was YES. [2021-03-26 10:32:58,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 101 events. 30/101 cut-off events. For 225/248 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 416 event pairs, 4 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 350. Up to 40 conditions per place. [2021-03-26 10:32:58,971 INFO L142 LiptonReduction]: Number of co-enabled transitions 174 [2021-03-26 10:32:58,976 INFO L154 LiptonReduction]: Checked pairs total: 90 [2021-03-26 10:32:58,977 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:32:58,977 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 10:32:58,977 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 185 flow [2021-03-26 10:32:58,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:58,978 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:58,978 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:58,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 10:32:58,978 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:58,978 INFO L82 PathProgramCache]: Analyzing trace with hash 595453726, now seen corresponding path program 1 times [2021-03-26 10:32:58,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:58,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638417115] [2021-03-26 10:32:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:32:59,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,021 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 10:32:59,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 10:32:59,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:32:59,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638417115] [2021-03-26 10:32:59,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:32:59,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:32:59,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032886506] [2021-03-26 10:32:59,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:32:59,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:32:59,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:32:59,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:32:59,034 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-26 10:32:59,035 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:32:59,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-26 10:32:59,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:32:59,075 INFO L129 PetriNetUnfolder]: 29/111 cut-off events. [2021-03-26 10:32:59,075 INFO L130 PetriNetUnfolder]: For 379/509 co-relation queries the response was YES. [2021-03-26 10:32:59,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 111 events. 29/111 cut-off events. For 379/509 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 473 event pairs, 0 based on Foata normal form. 11/120 useless extension candidates. Maximal degree in co-relation 446. Up to 40 conditions per place. [2021-03-26 10:32:59,076 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 14 selfloop transitions, 14 changer transitions 6/44 dead transitions. [2021-03-26 10:32:59,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 406 flow [2021-03-26 10:32:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:32:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:32:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2021-03-26 10:32:59,079 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7358943577430972 [2021-03-26 10:32:59,079 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2021-03-26 10:32:59,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2021-03-26 10:32:59,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:32:59,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2021-03-26 10:32:59,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,082 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,082 INFO L185 Difference]: Start difference. First operand has 41 places, 27 transitions, 185 flow. Second operand 7 states and 613 transitions. [2021-03-26 10:32:59,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 406 flow [2021-03-26 10:32:59,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 384 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-26 10:32:59,085 INFO L241 Difference]: Finished difference. Result has 50 places, 34 transitions, 316 flow [2021-03-26 10:32:59,085 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2021-03-26 10:32:59,085 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2021-03-26 10:32:59,085 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:59,086 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 34 transitions, 316 flow [2021-03-26 10:32:59,086 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 34 transitions, 316 flow [2021-03-26 10:32:59,086 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 34 transitions, 316 flow [2021-03-26 10:32:59,091 INFO L129 PetriNetUnfolder]: 24/86 cut-off events. [2021-03-26 10:32:59,091 INFO L130 PetriNetUnfolder]: For 272/323 co-relation queries the response was YES. [2021-03-26 10:32:59,092 INFO L84 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 86 events. 24/86 cut-off events. For 272/323 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 341 event pairs, 2 based on Foata normal form. 3/86 useless extension candidates. Maximal degree in co-relation 367. Up to 34 conditions per place. [2021-03-26 10:32:59,092 INFO L142 LiptonReduction]: Number of co-enabled transitions 210 [2021-03-26 10:32:59,098 INFO L154 LiptonReduction]: Checked pairs total: 189 [2021-03-26 10:32:59,098 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:32:59,098 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 10:32:59,099 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 316 flow [2021-03-26 10:32:59,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,099 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:59,099 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:59,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 10:32:59,099 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:59,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1709419105, now seen corresponding path program 1 times [2021-03-26 10:32:59,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:59,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028214147] [2021-03-26 10:32:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:32:59,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:32:59,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028214147] [2021-03-26 10:32:59,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:32:59,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:32:59,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353469342] [2021-03-26 10:32:59,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:32:59,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:32:59,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:32:59,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:32:59,134 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 119 [2021-03-26 10:32:59,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:32:59,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 119 [2021-03-26 10:32:59,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:32:59,167 INFO L129 PetriNetUnfolder]: 37/129 cut-off events. [2021-03-26 10:32:59,168 INFO L130 PetriNetUnfolder]: For 612/702 co-relation queries the response was YES. [2021-03-26 10:32:59,168 INFO L84 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 129 events. 37/129 cut-off events. For 612/702 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 566 event pairs, 2 based on Foata normal form. 13/139 useless extension candidates. Maximal degree in co-relation 583. Up to 45 conditions per place. [2021-03-26 10:32:59,169 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 2 selfloop transitions, 4 changer transitions 12/39 dead transitions. [2021-03-26 10:32:59,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 388 flow [2021-03-26 10:32:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 10:32:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 10:32:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 563 transitions. [2021-03-26 10:32:59,170 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.788515406162465 [2021-03-26 10:32:59,170 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 563 transitions. [2021-03-26 10:32:59,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 563 transitions. [2021-03-26 10:32:59,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:32:59,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 563 transitions. [2021-03-26 10:32:59,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.83333333333333) internal successors, (563), 6 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,173 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,173 INFO L185 Difference]: Start difference. First operand has 47 places, 34 transitions, 316 flow. Second operand 6 states and 563 transitions. [2021-03-26 10:32:59,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 388 flow [2021-03-26 10:32:59,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 364 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-26 10:32:59,176 INFO L241 Difference]: Finished difference. Result has 51 places, 27 transitions, 231 flow [2021-03-26 10:32:59,176 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=51, PETRI_TRANSITIONS=27} [2021-03-26 10:32:59,176 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-26 10:32:59,177 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:59,177 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 27 transitions, 231 flow [2021-03-26 10:32:59,177 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 27 transitions, 231 flow [2021-03-26 10:32:59,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 27 transitions, 231 flow [2021-03-26 10:32:59,181 INFO L129 PetriNetUnfolder]: 10/56 cut-off events. [2021-03-26 10:32:59,181 INFO L130 PetriNetUnfolder]: For 182/190 co-relation queries the response was YES. [2021-03-26 10:32:59,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 56 events. 10/56 cut-off events. For 182/190 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 152 event pairs, 3 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 229. Up to 17 conditions per place. [2021-03-26 10:32:59,182 INFO L142 LiptonReduction]: Number of co-enabled transitions 110 [2021-03-26 10:32:59,217 INFO L154 LiptonReduction]: Checked pairs total: 107 [2021-03-26 10:32:59,217 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 10:32:59,217 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-26 10:32:59,221 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 233 flow [2021-03-26 10:32:59,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,221 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:59,221 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:59,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 10:32:59,221 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:59,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:59,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1748794311, now seen corresponding path program 1 times [2021-03-26 10:32:59,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:59,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452423443] [2021-03-26 10:32:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:32:59,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:32:59,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,266 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-26 10:32:59,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 10:32:59,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:32:59,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452423443] [2021-03-26 10:32:59,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:32:59,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:32:59,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447528595] [2021-03-26 10:32:59,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:32:59,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:32:59,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:32:59,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:32:59,276 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2021-03-26 10:32:59,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:32:59,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2021-03-26 10:32:59,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:32:59,312 INFO L129 PetriNetUnfolder]: 8/53 cut-off events. [2021-03-26 10:32:59,312 INFO L130 PetriNetUnfolder]: For 245/258 co-relation queries the response was YES. [2021-03-26 10:32:59,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 53 events. 8/53 cut-off events. For 245/258 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 154 event pairs, 0 based on Foata normal form. 8/61 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2021-03-26 10:32:59,313 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 10 selfloop transitions, 11 changer transitions 5/35 dead transitions. [2021-03-26 10:32:59,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 35 transitions, 398 flow [2021-03-26 10:32:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:32:59,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:32:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2021-03-26 10:32:59,315 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.71900826446281 [2021-03-26 10:32:59,315 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2021-03-26 10:32:59,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2021-03-26 10:32:59,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:32:59,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2021-03-26 10:32:59,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 121.0) internal successors, (968), 8 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,318 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 121.0) internal successors, (968), 8 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,318 INFO L185 Difference]: Start difference. First operand has 48 places, 26 transitions, 233 flow. Second operand 7 states and 609 transitions. [2021-03-26 10:32:59,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 35 transitions, 398 flow [2021-03-26 10:32:59,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 346 flow, removed 13 selfloop flow, removed 9 redundant places. [2021-03-26 10:32:59,320 INFO L241 Difference]: Finished difference. Result has 51 places, 28 transitions, 279 flow [2021-03-26 10:32:59,321 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=51, PETRI_TRANSITIONS=28} [2021-03-26 10:32:59,321 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-26 10:32:59,321 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:59,321 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 28 transitions, 279 flow [2021-03-26 10:32:59,321 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 28 transitions, 279 flow [2021-03-26 10:32:59,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 28 transitions, 279 flow [2021-03-26 10:32:59,327 INFO L129 PetriNetUnfolder]: 7/43 cut-off events. [2021-03-26 10:32:59,327 INFO L130 PetriNetUnfolder]: For 183/193 co-relation queries the response was YES. [2021-03-26 10:32:59,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 43 events. 7/43 cut-off events. For 183/193 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 196. Up to 14 conditions per place. [2021-03-26 10:32:59,328 INFO L142 LiptonReduction]: Number of co-enabled transitions 104 [2021-03-26 10:32:59,374 INFO L154 LiptonReduction]: Checked pairs total: 152 [2021-03-26 10:32:59,374 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:32:59,375 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 54 [2021-03-26 10:32:59,376 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 277 flow [2021-03-26 10:32:59,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,377 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:59,377 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:59,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 10:32:59,377 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:59,378 INFO L82 PathProgramCache]: Analyzing trace with hash 969154814, now seen corresponding path program 1 times [2021-03-26 10:32:59,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:59,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157109309] [2021-03-26 10:32:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:32:59,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:32:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:32:59,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157109309] [2021-03-26 10:32:59,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:32:59,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:32:59,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622512652] [2021-03-26 10:32:59,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:32:59,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:32:59,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:32:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:32:59,439 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-26 10:32:59,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:32:59,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-26 10:32:59,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:32:59,480 INFO L129 PetriNetUnfolder]: 58/140 cut-off events. [2021-03-26 10:32:59,481 INFO L130 PetriNetUnfolder]: For 1150/1203 co-relation queries the response was YES. [2021-03-26 10:32:59,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 140 events. 58/140 cut-off events. For 1150/1203 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 592 event pairs, 21 based on Foata normal form. 16/148 useless extension candidates. Maximal degree in co-relation 483. Up to 85 conditions per place. [2021-03-26 10:32:59,481 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 5 selfloop transitions, 6 changer transitions 5/37 dead transitions. [2021-03-26 10:32:59,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 329 flow [2021-03-26 10:32:59,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:32:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:32:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2021-03-26 10:32:59,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.759016393442623 [2021-03-26 10:32:59,483 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2021-03-26 10:32:59,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2021-03-26 10:32:59,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:32:59,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2021-03-26 10:32:59,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 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) [2021-03-26 10:32:59,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,485 INFO L185 Difference]: Start difference. First operand has 47 places, 27 transitions, 277 flow. Second operand 5 states and 463 transitions. [2021-03-26 10:32:59,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 329 flow [2021-03-26 10:32:59,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 304 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-26 10:32:59,489 INFO L241 Difference]: Finished difference. Result has 49 places, 32 transitions, 298 flow [2021-03-26 10:32:59,489 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2021-03-26 10:32:59,489 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-26 10:32:59,489 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:59,489 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 32 transitions, 298 flow [2021-03-26 10:32:59,490 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 32 transitions, 298 flow [2021-03-26 10:32:59,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 32 transitions, 298 flow [2021-03-26 10:32:59,499 INFO L129 PetriNetUnfolder]: 41/126 cut-off events. [2021-03-26 10:32:59,499 INFO L130 PetriNetUnfolder]: For 385/417 co-relation queries the response was YES. [2021-03-26 10:32:59,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 126 events. 41/126 cut-off events. For 385/417 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 600 event pairs, 23 based on Foata normal form. 2/120 useless extension candidates. Maximal degree in co-relation 473. Up to 79 conditions per place. [2021-03-26 10:32:59,501 INFO L142 LiptonReduction]: Number of co-enabled transitions 152 [2021-03-26 10:32:59,502 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:32:59,502 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:32:59,502 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 10:32:59,507 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 298 flow [2021-03-26 10:32:59,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,507 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:59,508 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:59,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 10:32:59,508 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:59,508 INFO L82 PathProgramCache]: Analyzing trace with hash -735162295, now seen corresponding path program 1 times [2021-03-26 10:32:59,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:59,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868073537] [2021-03-26 10:32:59,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:32:59,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,552 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-26 10:32:59,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 10:32:59,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:32:59,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868073537] [2021-03-26 10:32:59,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:32:59,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:32:59,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992110544] [2021-03-26 10:32:59,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:32:59,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:32:59,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:32:59,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:32:59,561 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-26 10:32:59,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:32:59,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-26 10:32:59,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:32:59,600 INFO L129 PetriNetUnfolder]: 38/113 cut-off events. [2021-03-26 10:32:59,600 INFO L130 PetriNetUnfolder]: For 531/670 co-relation queries the response was YES. [2021-03-26 10:32:59,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 113 events. 38/113 cut-off events. For 531/670 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 478 event pairs, 3 based on Foata normal form. 41/148 useless extension candidates. Maximal degree in co-relation 482. Up to 63 conditions per place. [2021-03-26 10:32:59,601 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 5 selfloop transitions, 10 changer transitions 6/42 dead transitions. [2021-03-26 10:32:59,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 42 transitions, 392 flow [2021-03-26 10:32:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:32:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:32:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 646 transitions. [2021-03-26 10:32:59,602 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7564402810304449 [2021-03-26 10:32:59,602 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 646 transitions. [2021-03-26 10:32:59,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 646 transitions. [2021-03-26 10:32:59,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:32:59,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 646 transitions. [2021-03-26 10:32:59,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.28571428571429) internal successors, (646), 7 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,605 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,605 INFO L185 Difference]: Start difference. First operand has 49 places, 32 transitions, 298 flow. Second operand 7 states and 646 transitions. [2021-03-26 10:32:59,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 42 transitions, 392 flow [2021-03-26 10:32:59,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-26 10:32:59,608 INFO L241 Difference]: Finished difference. Result has 58 places, 36 transitions, 365 flow [2021-03-26 10:32:59,608 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=365, PETRI_PLACES=58, PETRI_TRANSITIONS=36} [2021-03-26 10:32:59,608 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-26 10:32:59,608 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:59,608 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 36 transitions, 365 flow [2021-03-26 10:32:59,608 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 36 transitions, 365 flow [2021-03-26 10:32:59,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 36 transitions, 365 flow [2021-03-26 10:32:59,616 INFO L129 PetriNetUnfolder]: 28/96 cut-off events. [2021-03-26 10:32:59,616 INFO L130 PetriNetUnfolder]: For 463/524 co-relation queries the response was YES. [2021-03-26 10:32:59,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 96 events. 28/96 cut-off events. For 463/524 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 374 event pairs, 3 based on Foata normal form. 8/104 useless extension candidates. Maximal degree in co-relation 460. Up to 52 conditions per place. [2021-03-26 10:32:59,617 INFO L142 LiptonReduction]: Number of co-enabled transitions 152 [2021-03-26 10:32:59,621 INFO L154 LiptonReduction]: Checked pairs total: 29 [2021-03-26 10:32:59,621 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 10:32:59,621 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-26 10:32:59,622 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 349 flow [2021-03-26 10:32:59,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,622 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:59,622 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:59,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 10:32:59,623 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:59,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:59,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1573840862, now seen corresponding path program 1 times [2021-03-26 10:32:59,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:59,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321748480] [2021-03-26 10:32:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:32:59,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,664 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-26 10:32:59,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 10:32:59,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:32:59,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321748480] [2021-03-26 10:32:59,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:32:59,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:32:59,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224388316] [2021-03-26 10:32:59,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 10:32:59,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:32:59,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 10:32:59,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 10:32:59,672 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-26 10:32:59,672 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 349 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,672 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:32:59,672 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-26 10:32:59,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:32:59,704 INFO L129 PetriNetUnfolder]: 21/67 cut-off events. [2021-03-26 10:32:59,705 INFO L130 PetriNetUnfolder]: For 420/476 co-relation queries the response was YES. [2021-03-26 10:32:59,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 67 events. 21/67 cut-off events. For 420/476 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 187 event pairs, 0 based on Foata normal form. 23/88 useless extension candidates. Maximal degree in co-relation 357. Up to 33 conditions per place. [2021-03-26 10:32:59,705 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 2 selfloop transitions, 10 changer transitions 9/37 dead transitions. [2021-03-26 10:32:59,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 37 transitions, 406 flow [2021-03-26 10:32:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:32:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:32:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 641 transitions. [2021-03-26 10:32:59,707 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7505854800936768 [2021-03-26 10:32:59,707 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 641 transitions. [2021-03-26 10:32:59,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 641 transitions. [2021-03-26 10:32:59,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:32:59,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 641 transitions. [2021-03-26 10:32:59,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.57142857142857) internal successors, (641), 7 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,711 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,711 INFO L185 Difference]: Start difference. First operand has 57 places, 34 transitions, 349 flow. Second operand 7 states and 641 transitions. [2021-03-26 10:32:59,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 37 transitions, 406 flow [2021-03-26 10:32:59,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 37 transitions, 372 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-26 10:32:59,714 INFO L241 Difference]: Finished difference. Result has 58 places, 28 transitions, 278 flow [2021-03-26 10:32:59,714 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=58, PETRI_TRANSITIONS=28} [2021-03-26 10:32:59,714 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-26 10:32:59,715 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:59,715 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 28 transitions, 278 flow [2021-03-26 10:32:59,715 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 28 transitions, 278 flow [2021-03-26 10:32:59,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 56 places, 28 transitions, 278 flow [2021-03-26 10:32:59,718 INFO L129 PetriNetUnfolder]: 10/41 cut-off events. [2021-03-26 10:32:59,719 INFO L130 PetriNetUnfolder]: For 128/130 co-relation queries the response was YES. [2021-03-26 10:32:59,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 41 events. 10/41 cut-off events. For 128/130 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 91 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 189. Up to 15 conditions per place. [2021-03-26 10:32:59,719 INFO L142 LiptonReduction]: Number of co-enabled transitions 34 [2021-03-26 10:32:59,791 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-26 10:32:59,792 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 10:32:59,792 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 77 [2021-03-26 10:32:59,793 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 27 transitions, 291 flow [2021-03-26 10:32:59,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,793 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:59,793 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:59,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 10:32:59,793 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:59,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:59,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2030725203, now seen corresponding path program 1 times [2021-03-26 10:32:59,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:59,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395905942] [2021-03-26 10:32:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:32:59,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:32:59,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:32:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:32:59,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395905942] [2021-03-26 10:32:59,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:32:59,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:32:59,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43021537] [2021-03-26 10:32:59,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:32:59,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:32:59,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:32:59,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:32:59,827 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 124 [2021-03-26 10:32:59,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 27 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:32:59,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 124 [2021-03-26 10:32:59,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:32:59,846 INFO L129 PetriNetUnfolder]: 13/50 cut-off events. [2021-03-26 10:32:59,846 INFO L130 PetriNetUnfolder]: For 333/344 co-relation queries the response was YES. [2021-03-26 10:32:59,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 50 events. 13/50 cut-off events. For 333/344 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 140 event pairs, 0 based on Foata normal form. 6/54 useless extension candidates. Maximal degree in co-relation 279. Up to 22 conditions per place. [2021-03-26 10:32:59,846 INFO L132 encePairwiseOnDemand]: 120/124 looper letters, 4 selfloop transitions, 3 changer transitions 9/30 dead transitions. [2021-03-26 10:32:59,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 30 transitions, 378 flow [2021-03-26 10:32:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:32:59,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:32:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2021-03-26 10:32:59,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7762096774193549 [2021-03-26 10:32:59,848 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2021-03-26 10:32:59,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2021-03-26 10:32:59,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:32:59,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2021-03-26 10:32:59,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,850 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,850 INFO L185 Difference]: Start difference. First operand has 55 places, 27 transitions, 291 flow. Second operand 4 states and 385 transitions. [2021-03-26 10:32:59,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 30 transitions, 378 flow [2021-03-26 10:32:59,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 293 flow, removed 16 selfloop flow, removed 12 redundant places. [2021-03-26 10:32:59,853 INFO L241 Difference]: Finished difference. Result has 47 places, 21 transitions, 166 flow [2021-03-26 10:32:59,853 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=47, PETRI_TRANSITIONS=21} [2021-03-26 10:32:59,853 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2021-03-26 10:32:59,853 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:32:59,853 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 21 transitions, 166 flow [2021-03-26 10:32:59,854 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 21 transitions, 166 flow [2021-03-26 10:32:59,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 21 transitions, 166 flow [2021-03-26 10:32:59,856 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-26 10:32:59,856 INFO L130 PetriNetUnfolder]: For 56/57 co-relation queries the response was YES. [2021-03-26 10:32:59,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 24 events. 5/24 cut-off events. For 56/57 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 85. Up to 8 conditions per place. [2021-03-26 10:32:59,856 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 10:32:59,974 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-26 10:32:59,974 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 10:32:59,975 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 122 [2021-03-26 10:32:59,975 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 19 transitions, 190 flow [2021-03-26 10:32:59,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:32:59,975 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:32:59,975 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:32:59,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 10:32:59,976 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:32:59,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:32:59,976 INFO L82 PathProgramCache]: Analyzing trace with hash 660186943, now seen corresponding path program 1 times [2021-03-26 10:32:59,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:32:59,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663649016] [2021-03-26 10:32:59,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:32:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:33:00,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:33:00,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:33:00,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:33:00,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:33:00,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:33:00,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:33:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:33:00,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663649016] [2021-03-26 10:33:00,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:33:00,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:33:00,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698006747] [2021-03-26 10:33:00,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:33:00,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:33:00,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:33:00,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:33:00,012 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 129 [2021-03-26 10:33:00,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 19 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:33:00,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:33:00,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 129 [2021-03-26 10:33:00,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:33:00,026 INFO L129 PetriNetUnfolder]: 5/22 cut-off events. [2021-03-26 10:33:00,026 INFO L130 PetriNetUnfolder]: For 111/113 co-relation queries the response was YES. [2021-03-26 10:33:00,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 22 events. 5/22 cut-off events. For 111/113 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 3/25 useless extension candidates. Maximal degree in co-relation 115. Up to 7 conditions per place. [2021-03-26 10:33:00,026 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-03-26 10:33:00,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 18 transitions, 190 flow [2021-03-26 10:33:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:33:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:33:00,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2021-03-26 10:33:00,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7364341085271318 [2021-03-26 10:33:00,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2021-03-26 10:33:00,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2021-03-26 10:33:00,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:33:00,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2021-03-26 10:33:00,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 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) [2021-03-26 10:33:00,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:33:00,029 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:33:00,030 INFO L185 Difference]: Start difference. First operand has 45 places, 19 transitions, 190 flow. Second operand 5 states and 475 transitions. [2021-03-26 10:33:00,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 18 transitions, 190 flow [2021-03-26 10:33:00,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 81 flow, removed 4 selfloop flow, removed 21 redundant places. [2021-03-26 10:33:00,031 INFO L241 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2021-03-26 10:33:00,031 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2021-03-26 10:33:00,031 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2021-03-26 10:33:00,031 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:33:00,031 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 0 transitions, 0 flow [2021-03-26 10:33:00,032 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 0 transitions, 0 flow [2021-03-26 10:33:00,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 10:33:00,032 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 10:33:00,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:33:00,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 10:33:00,032 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 10:33:00,032 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:33:00,032 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:33:00,032 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 10:33:00,033 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 10:33:00,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:33:00,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 10:33:00,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 10:33:00 BasicIcfg [2021-03-26 10:33:00,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 10:33:00,036 INFO L168 Benchmark]: Toolchain (without parser) took 4261.14 ms. Allocated memory was 255.9 MB in the beginning and 413.1 MB in the end (delta: 157.3 MB). Free memory was 234.9 MB in the beginning and 235.0 MB in the end (delta: -111.1 kB). Peak memory consumption was 156.8 MB. Max. memory is 16.0 GB. [2021-03-26 10:33:00,036 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 178.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:33:00,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.78 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.9 MB in the beginning and 307.0 MB in the end (delta: -72.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-26 10:33:00,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.14 ms. Allocated memory is still 343.9 MB. Free memory was 307.0 MB in the beginning and 304.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:33:00,037 INFO L168 Benchmark]: Boogie Preprocessor took 24.56 ms. Allocated memory is still 343.9 MB. Free memory was 304.9 MB in the beginning and 304.2 MB in the end (delta: 684.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:33:00,037 INFO L168 Benchmark]: RCFGBuilder took 335.41 ms. Allocated memory is still 343.9 MB. Free memory was 303.5 MB in the beginning and 281.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-26 10:33:00,037 INFO L168 Benchmark]: TraceAbstraction took 3507.46 ms. Allocated memory was 343.9 MB in the beginning and 413.1 MB in the end (delta: 69.2 MB). Free memory was 281.1 MB in the beginning and 235.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 118.5 MB. Max. memory is 16.0 GB. [2021-03-26 10:33:00,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 178.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 362.78 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 234.9 MB in the beginning and 307.0 MB in the end (delta: -72.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.14 ms. Allocated memory is still 343.9 MB. Free memory was 307.0 MB in the beginning and 304.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.56 ms. Allocated memory is still 343.9 MB. Free memory was 304.9 MB in the beginning and 304.2 MB in the end (delta: 684.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 335.41 ms. Allocated memory is still 343.9 MB. Free memory was 303.5 MB in the beginning and 281.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3507.46 ms. Allocated memory was 343.9 MB in the beginning and 413.1 MB in the end (delta: 69.2 MB). Free memory was 281.1 MB in the beginning and 235.0 MB in the end (delta: 46.1 MB). Peak memory consumption was 118.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1216.4ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 680, positive: 633, positive conditional: 633, positive unconditional: 0, negative: 47, negative conditional: 47, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 680, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 680, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 572, positive: 547, positive conditional: 0, positive unconditional: 547, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 572, positive: 547, positive conditional: 0, positive unconditional: 547, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 68, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 680, positive: 86, positive conditional: 0, positive unconditional: 86, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 572, Positive cache size: 547, Positive conditional cache size: 0, Positive unconditional cache size: 547, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 571.9ms, 40 PlacesBefore, 34 PlacesAfterwards, 25 TransitionsBefore, 22 TransitionsAfterwards, 154 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 78 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 36, positive: 30, positive conditional: 30, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 36, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 36, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 579, Positive cache size: 553, Positive conditional cache size: 0, Positive unconditional cache size: 553, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.4ms, 44 PlacesBefore, 41 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 174 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 20, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 20, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 582, Positive cache size: 555, Positive conditional cache size: 0, Positive unconditional cache size: 555, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Eliminated conditions: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.0ms, 50 PlacesBefore, 47 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 210 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 189 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 50, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 60, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 60, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 60, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 584, Positive cache size: 556, Positive conditional cache size: 0, Positive unconditional cache size: 556, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Eliminated conditions: 25 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.9ms, 51 PlacesBefore, 48 PlacesAfterwards, 27 TransitionsBefore, 26 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 107 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 19, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 19, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 19, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 585, Positive cache size: 557, Positive conditional cache size: 0, Positive unconditional cache size: 557, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Eliminated conditions: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 53.2ms, 51 PlacesBefore, 47 PlacesAfterwards, 28 TransitionsBefore, 27 TransitionsAfterwards, 104 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 152 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 27, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 15, negative conditional: 15, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 27, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 27, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, 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: 7, positive: 7, positive conditional: 0, positive unconditional: 7, 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: 27, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 592, Positive cache size: 564, Positive conditional cache size: 0, Positive unconditional cache size: 564, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Eliminated conditions: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.7ms, 49 PlacesBefore, 49 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 152 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 592, Positive cache size: 564, Positive conditional cache size: 0, Positive unconditional cache size: 564, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.6ms, 58 PlacesBefore, 57 PlacesAfterwards, 36 TransitionsBefore, 34 TransitionsAfterwards, 152 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 29 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 29, positive conditional: 29, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 29, positive: 29, positive conditional: 29, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 29, positive conditional: 29, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 29, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 595, Positive cache size: 567, Positive conditional cache size: 3, Positive unconditional cache size: 564, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 76.8ms, 58 PlacesBefore, 55 PlacesAfterwards, 28 TransitionsBefore, 27 TransitionsAfterwards, 34 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 597, Positive cache size: 569, Positive conditional cache size: 5, Positive unconditional cache size: 564, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 120.9ms, 47 PlacesBefore, 45 PlacesAfterwards, 21 TransitionsBefore, 19 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 14, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 14, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 5, 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: 5, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 602, Positive cache size: 574, Positive conditional cache size: 10, Positive unconditional cache size: 564, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 27 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: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 602, Positive cache size: 574, Positive conditional cache size: 10, Positive unconditional cache size: 564, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Eliminated conditions: 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, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3418.4ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 524.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1313.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 70 SDtfs, 68 SDslu, 82 SDs, 0 SdLazy, 209 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 114.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 158.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=365occurred in iteration=7, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.5ms SsaConstructionTime, 137.4ms SatisfiabilityAnalysisTime, 362.4ms InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 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...