/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 15:02:00,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 15:02:00,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 15:02:00,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 15:02:00,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 15:02:00,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 15:02:00,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 15:02:00,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 15:02:00,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 15:02:00,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 15:02:00,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 15:02:00,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 15:02:00,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 15:02:00,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 15:02:00,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 15:02:00,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 15:02:00,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 15:02:00,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 15:02:00,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 15:02:00,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 15:02:00,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 15:02:00,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 15:02:00,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 15:02:00,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 15:02:00,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 15:02:00,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 15:02:00,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 15:02:00,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 15:02:00,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 15:02:00,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 15:02:00,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 15:02:00,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 15:02:00,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 15:02:00,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 15:02:00,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 15:02:00,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 15:02:00,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 15:02:00,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 15:02:00,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 15:02:00,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 15:02:00,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 15:02:00,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2021-03-25 15:02:00,108 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 15:02:00,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 15:02:00,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 15:02:00,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 15:02:00,109 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 15:02:00,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 15:02:00,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 15:02:00,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 15:02:00,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 15:02:00,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 15:02:00,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 15:02:00,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 15:02:00,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 15:02:00,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 15:02:00,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 15:02:00,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 15:02:00,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 15:02:00,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 15:02:00,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 15:02:00,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 15:02:00,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 15:02:00,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:02:00,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 15:02:00,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 15:02:00,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 15:02:00,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 15:02:00,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 15:02:00,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 15:02:00,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 15:02:00,112 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 15:02:00,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 15:02:00,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 15:02:00,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 15:02:00,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 15:02:00,442 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 15:02:00,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-25 15:02:00,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a22e85c/1da2bbf79fd147c68c62a9b1196f8fb9/FLAGd3a962a3a [2021-03-25 15:02:00,946 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 15:02:00,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-25 15:02:00,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a22e85c/1da2bbf79fd147c68c62a9b1196f8fb9/FLAGd3a962a3a [2021-03-25 15:02:00,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a22e85c/1da2bbf79fd147c68c62a9b1196f8fb9 [2021-03-25 15:02:00,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 15:02:00,974 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 15:02:00,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 15:02:00,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 15:02:00,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 15:02:00,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:02:00" (1/1) ... [2021-03-25 15:02:00,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff99382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:00, skipping insertion in model container [2021-03-25 15:02:00,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:02:00" (1/1) ... [2021-03-25 15:02:00,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 15:02:01,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 15:02:01,197 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i[950,963] [2021-03-25 15:02:01,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:02:01,331 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 15:02:01,340 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i[950,963] [2021-03-25 15:02:01,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 15:02:01,415 INFO L208 MainTranslator]: Completed translation [2021-03-25 15:02:01,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01 WrapperNode [2021-03-25 15:02:01,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 15:02:01,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 15:02:01,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 15:02:01,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 15:02:01,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... [2021-03-25 15:02:01,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... [2021-03-25 15:02:01,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 15:02:01,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 15:02:01,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 15:02:01,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 15:02:01,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... [2021-03-25 15:02:01,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... [2021-03-25 15:02:01,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... [2021-03-25 15:02:01,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... [2021-03-25 15:02:01,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... [2021-03-25 15:02:01,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... [2021-03-25 15:02:01,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... [2021-03-25 15:02:01,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 15:02:01,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 15:02:01,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 15:02:01,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 15:02:01,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 15:02:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 15:02:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 15:02:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 15:02:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 15:02:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 15:02:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 15:02:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 15:02:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 15:02:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 15:02:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 15:02:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 15:02:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 15:02:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 15:02:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 15:02:01,537 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 15:02:01,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 15:02:01,888 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 15:02:01,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:02:01 BoogieIcfgContainer [2021-03-25 15:02:01,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 15:02:01,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 15:02:01,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 15:02:01,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 15:02:01,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 03:02:00" (1/3) ... [2021-03-25 15:02:01,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c30f465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:02:01, skipping insertion in model container [2021-03-25 15:02:01,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:02:01" (2/3) ... [2021-03-25 15:02:01,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c30f465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:02:01, skipping insertion in model container [2021-03-25 15:02:01,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:02:01" (3/3) ... [2021-03-25 15:02:01,896 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2021-03-25 15:02:01,899 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 15:02:01,902 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 15:02:01,903 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 15:02:01,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,935 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,938 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,938 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,940 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,940 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,940 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,941 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,941 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,941 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,941 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,942 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,944 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,944 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,944 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,945 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,948 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,948 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,948 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,951 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,951 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,951 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 15:02:01,952 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 15:02:01,964 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 15:02:01,984 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 15:02:01,984 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 15:02:01,984 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 15:02:01,984 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 15:02:01,984 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 15:02:01,984 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 15:02:01,984 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 15:02:01,984 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 15:02:01,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 15:02:02,034 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-25 15:02:02,034 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:02:02,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 15:02:02,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 15:02:02,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-25 15:02:02,044 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:02,051 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 15:02:02,054 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 15:02:02,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-25 15:02:02,073 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-25 15:02:02,073 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:02:02,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 15:02:02,076 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 15:02:03,110 INFO L154 LiptonReduction]: Checked pairs total: 1207 [2021-03-25 15:02:03,110 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 15:02:03,112 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1069 [2021-03-25 15:02:03,118 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 15:02:03,118 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:02:03,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:03,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:03,118 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:03,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:03,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1494745171, now seen corresponding path program 1 times [2021-03-25 15:02:03,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:03,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198401415] [2021-03-25 15:02:03,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:03,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:03,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:02:03,263 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 15:02:03,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 15:02:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:03,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198401415] [2021-03-25 15:02:03,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:03,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:02:03,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432540782] [2021-03-25 15:02:03,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:02:03,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:03,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:02:03,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:02:03,285 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2021-03-25 15:02:03,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:03,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:03,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2021-03-25 15:02:03,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:03,320 INFO L129 PetriNetUnfolder]: 90/214 cut-off events. [2021-03-25 15:02:03,320 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:02:03,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 214 events. 90/214 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 995 event pairs, 28 based on Foata normal form. 14/218 useless extension candidates. Maximal degree in co-relation 380. Up to 85 conditions per place. [2021-03-25 15:02:03,322 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 7 selfloop transitions, 7 changer transitions 0/26 dead transitions. [2021-03-25 15:02:03,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 89 flow [2021-03-25 15:02:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:02:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:02:03,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2021-03-25 15:02:03,330 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2021-03-25 15:02:03,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2021-03-25 15:02:03,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2021-03-25 15:02:03,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:03,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2021-03-25 15:02:03,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:03,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:03,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:03,339 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 3 states and 279 transitions. [2021-03-25 15:02:03,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 89 flow [2021-03-25 15:02:03,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 15:02:03,341 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 100 flow [2021-03-25 15:02:03,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2021-03-25 15:02:03,343 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-03-25 15:02:03,343 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:03,343 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 100 flow [2021-03-25 15:02:03,343 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 100 flow [2021-03-25 15:02:03,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 100 flow [2021-03-25 15:02:03,354 INFO L129 PetriNetUnfolder]: 90/214 cut-off events. [2021-03-25 15:02:03,354 INFO L130 PetriNetUnfolder]: For 25/33 co-relation queries the response was YES. [2021-03-25 15:02:03,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 214 events. 90/214 cut-off events. For 25/33 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1007 event pairs, 34 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 467. Up to 85 conditions per place. [2021-03-25 15:02:03,356 INFO L142 LiptonReduction]: Number of co-enabled transitions 172 [2021-03-25 15:02:03,716 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-25 15:02:03,879 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-25 15:02:03,937 INFO L154 LiptonReduction]: Checked pairs total: 204 [2021-03-25 15:02:03,956 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 15:02:03,956 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 613 [2021-03-25 15:02:03,957 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2021-03-25 15:02:03,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:03,957 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:03,957 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:03,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 15:02:03,957 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:03,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:03,958 INFO L82 PathProgramCache]: Analyzing trace with hash -59456381, now seen corresponding path program 1 times [2021-03-25 15:02:03,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:03,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089853248] [2021-03-25 15:02:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:03,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:03,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:02:03,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:03,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:04,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089853248] [2021-03-25 15:02:04,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:04,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:02:04,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76469744] [2021-03-25 15:02:04,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 15:02:04,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:04,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 15:02:04,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 15:02:04,003 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 114 [2021-03-25 15:02:04,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:04,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 114 [2021-03-25 15:02:04,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:04,020 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-03-25 15:02:04,020 INFO L130 PetriNetUnfolder]: For 66/98 co-relation queries the response was YES. [2021-03-25 15:02:04,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 184 events. 75/184 cut-off events. For 66/98 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 851 event pairs, 18 based on Foata normal form. 3/181 useless extension candidates. Maximal degree in co-relation 457. Up to 78 conditions per place. [2021-03-25 15:02:04,022 INFO L132 encePairwiseOnDemand]: 110/114 looper letters, 5 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2021-03-25 15:02:04,022 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 134 flow [2021-03-25 15:02:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 15:02:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 15:02:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-03-25 15:02:04,023 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8801169590643275 [2021-03-25 15:02:04,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-03-25 15:02:04,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-03-25 15:02:04,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:04,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-03-25 15:02:04,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,026 INFO L185 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 3 states and 301 transitions. [2021-03-25 15:02:04,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 134 flow [2021-03-25 15:02:04,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 15:02:04,028 INFO L241 Difference]: Finished difference. Result has 29 places, 27 transitions, 121 flow [2021-03-25 15:02:04,028 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2021-03-25 15:02:04,028 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2021-03-25 15:02:04,028 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:04,029 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 27 transitions, 121 flow [2021-03-25 15:02:04,029 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 27 transitions, 121 flow [2021-03-25 15:02:04,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 27 transitions, 121 flow [2021-03-25 15:02:04,038 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-03-25 15:02:04,038 INFO L130 PetriNetUnfolder]: For 32/55 co-relation queries the response was YES. [2021-03-25 15:02:04,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 184 events. 75/184 cut-off events. For 32/55 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 890 event pairs, 25 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 392. Up to 78 conditions per place. [2021-03-25 15:02:04,040 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-25 15:02:04,044 INFO L154 LiptonReduction]: Checked pairs total: 62 [2021-03-25 15:02:04,044 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:02:04,044 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 15:02:04,044 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 121 flow [2021-03-25 15:02:04,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,045 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:04,045 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:04,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 15:02:04,045 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:04,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:04,045 INFO L82 PathProgramCache]: Analyzing trace with hash 891277436, now seen corresponding path program 1 times [2021-03-25 15:02:04,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:04,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596138034] [2021-03-25 15:02:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:04,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:04,080 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 15:02:04,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 15:02:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:04,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596138034] [2021-03-25 15:02:04,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:04,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:02:04,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775877401] [2021-03-25 15:02:04,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:02:04,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:04,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:02:04,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:02:04,088 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 15:02:04,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 121 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) [2021-03-25 15:02:04,088 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:04,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 15:02:04,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:04,111 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-03-25 15:02:04,111 INFO L130 PetriNetUnfolder]: For 55/152 co-relation queries the response was YES. [2021-03-25 15:02:04,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 164 events. 64/164 cut-off events. For 55/152 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 711 event pairs, 2 based on Foata normal form. 3/164 useless extension candidates. Maximal degree in co-relation 476. Up to 72 conditions per place. [2021-03-25 15:02:04,119 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 16 selfloop transitions, 13 changer transitions 0/38 dead transitions. [2021-03-25 15:02:04,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 236 flow [2021-03-25 15:02:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:02:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:02:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-03-25 15:02:04,120 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-03-25 15:02:04,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-03-25 15:02:04,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-03-25 15:02:04,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:04,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-03-25 15:02:04,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,123 INFO L185 Difference]: Start difference. First operand has 29 places, 27 transitions, 121 flow. Second operand 4 states and 376 transitions. [2021-03-25 15:02:04,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 236 flow [2021-03-25 15:02:04,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 15:02:04,124 INFO L241 Difference]: Finished difference. Result has 34 places, 36 transitions, 228 flow [2021-03-25 15:02:04,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2021-03-25 15:02:04,125 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-03-25 15:02:04,125 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:04,125 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 36 transitions, 228 flow [2021-03-25 15:02:04,125 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 36 transitions, 228 flow [2021-03-25 15:02:04,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 36 transitions, 228 flow [2021-03-25 15:02:04,133 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-03-25 15:02:04,134 INFO L130 PetriNetUnfolder]: For 181/232 co-relation queries the response was YES. [2021-03-25 15:02:04,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 164 events. 64/164 cut-off events. For 181/232 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 721 event pairs, 9 based on Foata normal form. 2/163 useless extension candidates. Maximal degree in co-relation 502. Up to 72 conditions per place. [2021-03-25 15:02:04,135 INFO L142 LiptonReduction]: Number of co-enabled transitions 198 [2021-03-25 15:02:04,138 INFO L154 LiptonReduction]: Checked pairs total: 111 [2021-03-25 15:02:04,138 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:02:04,138 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-25 15:02:04,139 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 228 flow [2021-03-25 15:02:04,139 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) [2021-03-25 15:02:04,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:04,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:04,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 15:02:04,139 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:04,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:04,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1923230549, now seen corresponding path program 1 times [2021-03-25 15:02:04,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:04,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112447943] [2021-03-25 15:02:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:04,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:04,214 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 15:02:04,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 15:02:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:04,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112447943] [2021-03-25 15:02:04,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:04,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:02:04,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638513467] [2021-03-25 15:02:04,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:02:04,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:04,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:02:04,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:02:04,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 15:02:04,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:04,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 15:02:04,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:04,266 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-03-25 15:02:04,267 INFO L130 PetriNetUnfolder]: For 193/373 co-relation queries the response was YES. [2021-03-25 15:02:04,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 151 events. 57/151 cut-off events. For 193/373 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 627 event pairs, 2 based on Foata normal form. 13/163 useless extension candidates. Maximal degree in co-relation 578. Up to 67 conditions per place. [2021-03-25 15:02:04,268 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 18 selfloop transitions, 19 changer transitions 0/46 dead transitions. [2021-03-25 15:02:04,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 372 flow [2021-03-25 15:02:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:02:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:02:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-03-25 15:02:04,271 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-03-25 15:02:04,271 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-03-25 15:02:04,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-03-25 15:02:04,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:04,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-03-25 15:02:04,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,274 INFO L185 Difference]: Start difference. First operand has 34 places, 36 transitions, 228 flow. Second operand 4 states and 376 transitions. [2021-03-25 15:02:04,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 372 flow [2021-03-25 15:02:04,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 372 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 15:02:04,279 INFO L241 Difference]: Finished difference. Result has 40 places, 44 transitions, 374 flow [2021-03-25 15:02:04,280 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2021-03-25 15:02:04,280 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-25 15:02:04,280 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:04,280 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 44 transitions, 374 flow [2021-03-25 15:02:04,280 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 44 transitions, 374 flow [2021-03-25 15:02:04,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 44 transitions, 374 flow [2021-03-25 15:02:04,299 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-03-25 15:02:04,299 INFO L130 PetriNetUnfolder]: For 429/502 co-relation queries the response was YES. [2021-03-25 15:02:04,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 151 events. 57/151 cut-off events. For 429/502 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 642 event pairs, 3 based on Foata normal form. 3/152 useless extension candidates. Maximal degree in co-relation 612. Up to 67 conditions per place. [2021-03-25 15:02:04,301 INFO L142 LiptonReduction]: Number of co-enabled transitions 226 [2021-03-25 15:02:04,305 INFO L154 LiptonReduction]: Checked pairs total: 131 [2021-03-25 15:02:04,305 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:02:04,306 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-25 15:02:04,307 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 374 flow [2021-03-25 15:02:04,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,308 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:04,308 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:04,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 15:02:04,308 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:04,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:04,308 INFO L82 PathProgramCache]: Analyzing trace with hash -513229394, now seen corresponding path program 1 times [2021-03-25 15:02:04,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:04,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28954106] [2021-03-25 15:02:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:04,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:02:04,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:04,350 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 15:02:04,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 15:02:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:04,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28954106] [2021-03-25 15:02:04,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:04,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:02:04,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731649626] [2021-03-25 15:02:04,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:02:04,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:04,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:02:04,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:02:04,358 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 15:02:04,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:04,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 15:02:04,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:04,383 INFO L129 PetriNetUnfolder]: 54/162 cut-off events. [2021-03-25 15:02:04,384 INFO L130 PetriNetUnfolder]: For 497/721 co-relation queries the response was YES. [2021-03-25 15:02:04,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 162 events. 54/162 cut-off events. For 497/721 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 758 event pairs, 1 based on Foata normal form. 28/188 useless extension candidates. Maximal degree in co-relation 759. Up to 74 conditions per place. [2021-03-25 15:02:04,385 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 14 selfloop transitions, 23 changer transitions 3/49 dead transitions. [2021-03-25 15:02:04,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 502 flow [2021-03-25 15:02:04,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:02:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:02:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 15:02:04,386 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223684210526315 [2021-03-25 15:02:04,386 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 15:02:04,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 15:02:04,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:04,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 15:02:04,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,388 INFO L185 Difference]: Start difference. First operand has 40 places, 44 transitions, 374 flow. Second operand 4 states and 375 transitions. [2021-03-25 15:02:04,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 502 flow [2021-03-25 15:02:04,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 15:02:04,391 INFO L241 Difference]: Finished difference. Result has 46 places, 44 transitions, 476 flow [2021-03-25 15:02:04,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=476, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2021-03-25 15:02:04,392 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2021-03-25 15:02:04,392 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:04,392 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 44 transitions, 476 flow [2021-03-25 15:02:04,392 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 44 transitions, 476 flow [2021-03-25 15:02:04,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 44 transitions, 476 flow [2021-03-25 15:02:04,402 INFO L129 PetriNetUnfolder]: 51/156 cut-off events. [2021-03-25 15:02:04,402 INFO L130 PetriNetUnfolder]: For 767/849 co-relation queries the response was YES. [2021-03-25 15:02:04,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 156 events. 51/156 cut-off events. For 767/849 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 740 event pairs, 3 based on Foata normal form. 4/158 useless extension candidates. Maximal degree in co-relation 754. Up to 70 conditions per place. [2021-03-25 15:02:04,404 INFO L142 LiptonReduction]: Number of co-enabled transitions 224 [2021-03-25 15:02:04,407 INFO L154 LiptonReduction]: Checked pairs total: 116 [2021-03-25 15:02:04,407 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:02:04,408 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 15:02:04,408 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 476 flow [2021-03-25 15:02:04,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,408 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:04,409 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:04,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 15:02:04,409 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:04,409 INFO L82 PathProgramCache]: Analyzing trace with hash -512179021, now seen corresponding path program 1 times [2021-03-25 15:02:04,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:04,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695983174] [2021-03-25 15:02:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:04,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:04,438 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 15:02:04,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:02:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:04,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695983174] [2021-03-25 15:02:04,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:04,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 15:02:04,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050376359] [2021-03-25 15:02:04,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:02:04,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:04,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:02:04,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:02:04,445 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-25 15:02:04,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 476 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:04,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-25 15:02:04,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:04,493 INFO L129 PetriNetUnfolder]: 125/328 cut-off events. [2021-03-25 15:02:04,493 INFO L130 PetriNetUnfolder]: For 1283/1380 co-relation queries the response was YES. [2021-03-25 15:02:04,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 328 events. 125/328 cut-off events. For 1283/1380 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2029 event pairs, 27 based on Foata normal form. 35/348 useless extension candidates. Maximal degree in co-relation 1179. Up to 164 conditions per place. [2021-03-25 15:02:04,495 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 8 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2021-03-25 15:02:04,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 528 flow [2021-03-25 15:02:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 15:02:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 15:02:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-25 15:02:04,497 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7771929824561403 [2021-03-25 15:02:04,497 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-25 15:02:04,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-25 15:02:04,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:04,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-25 15:02:04,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,499 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,499 INFO L185 Difference]: Start difference. First operand has 46 places, 44 transitions, 476 flow. Second operand 5 states and 443 transitions. [2021-03-25 15:02:04,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 528 flow [2021-03-25 15:02:04,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 522 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-03-25 15:02:04,503 INFO L241 Difference]: Finished difference. Result has 53 places, 51 transitions, 530 flow [2021-03-25 15:02:04,503 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2021-03-25 15:02:04,503 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2021-03-25 15:02:04,503 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:04,503 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 51 transitions, 530 flow [2021-03-25 15:02:04,503 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 51 transitions, 530 flow [2021-03-25 15:02:04,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 51 transitions, 530 flow [2021-03-25 15:02:04,522 INFO L129 PetriNetUnfolder]: 124/325 cut-off events. [2021-03-25 15:02:04,523 INFO L130 PetriNetUnfolder]: For 1156/1229 co-relation queries the response was YES. [2021-03-25 15:02:04,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 325 events. 124/325 cut-off events. For 1156/1229 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2080 event pairs, 29 based on Foata normal form. 14/319 useless extension candidates. Maximal degree in co-relation 1331. Up to 183 conditions per place. [2021-03-25 15:02:04,526 INFO L142 LiptonReduction]: Number of co-enabled transitions 388 [2021-03-25 15:02:04,532 INFO L154 LiptonReduction]: Checked pairs total: 33 [2021-03-25 15:02:04,532 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:02:04,533 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-25 15:02:04,534 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 524 flow [2021-03-25 15:02:04,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,534 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:04,534 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:04,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 15:02:04,534 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:04,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:04,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1361662799, now seen corresponding path program 1 times [2021-03-25 15:02:04,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:04,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973759887] [2021-03-25 15:02:04,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:04,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:02:04,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:04,576 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 15:02:04,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 15:02:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:04,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973759887] [2021-03-25 15:02:04,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:04,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:02:04,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277373576] [2021-03-25 15:02:04,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:02:04,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:04,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:02:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:02:04,589 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 15:02:04,590 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:04,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 15:02:04,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:04,645 INFO L129 PetriNetUnfolder]: 135/341 cut-off events. [2021-03-25 15:02:04,645 INFO L130 PetriNetUnfolder]: For 1340/1432 co-relation queries the response was YES. [2021-03-25 15:02:04,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 341 events. 135/341 cut-off events. For 1340/1432 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2033 event pairs, 40 based on Foata normal form. 23/343 useless extension candidates. Maximal degree in co-relation 1512. Up to 216 conditions per place. [2021-03-25 15:02:04,647 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 14 selfloop transitions, 22 changer transitions 4/52 dead transitions. [2021-03-25 15:02:04,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 652 flow [2021-03-25 15:02:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:02:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:02:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 15:02:04,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223684210526315 [2021-03-25 15:02:04,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 15:02:04,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 15:02:04,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:04,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 15:02:04,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,650 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,650 INFO L185 Difference]: Start difference. First operand has 53 places, 50 transitions, 524 flow. Second operand 4 states and 375 transitions. [2021-03-25 15:02:04,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 652 flow [2021-03-25 15:02:04,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 646 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 15:02:04,655 INFO L241 Difference]: Finished difference. Result has 55 places, 46 transitions, 592 flow [2021-03-25 15:02:04,656 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=592, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2021-03-25 15:02:04,656 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2021-03-25 15:02:04,656 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:04,657 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 46 transitions, 592 flow [2021-03-25 15:02:04,657 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 46 transitions, 592 flow [2021-03-25 15:02:04,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 592 flow [2021-03-25 15:02:04,685 INFO L129 PetriNetUnfolder]: 130/331 cut-off events. [2021-03-25 15:02:04,685 INFO L130 PetriNetUnfolder]: For 1587/1677 co-relation queries the response was YES. [2021-03-25 15:02:04,686 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 331 events. 130/331 cut-off events. For 1587/1677 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2032 event pairs, 40 based on Foata normal form. 3/318 useless extension candidates. Maximal degree in co-relation 1439. Up to 213 conditions per place. [2021-03-25 15:02:04,688 INFO L142 LiptonReduction]: Number of co-enabled transitions 246 [2021-03-25 15:02:04,691 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 15:02:04,691 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:02:04,691 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-25 15:02:04,694 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 592 flow [2021-03-25 15:02:04,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,695 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:04,695 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:04,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 15:02:04,696 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:04,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:04,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1137926189, now seen corresponding path program 1 times [2021-03-25 15:02:04,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:04,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710399556] [2021-03-25 15:02:04,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:04,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 15:02:04,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:04,736 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 15:02:04,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 15:02:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:04,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710399556] [2021-03-25 15:02:04,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:04,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:02:04,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525228873] [2021-03-25 15:02:04,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 15:02:04,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:04,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 15:02:04,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 15:02:04,748 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 15:02:04,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 592 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:04,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 15:02:04,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:04,787 INFO L129 PetriNetUnfolder]: 167/413 cut-off events. [2021-03-25 15:02:04,788 INFO L130 PetriNetUnfolder]: For 1667/1767 co-relation queries the response was YES. [2021-03-25 15:02:04,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 413 events. 167/413 cut-off events. For 1667/1767 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2659 event pairs, 60 based on Foata normal form. 25/406 useless extension candidates. Maximal degree in co-relation 1775. Up to 295 conditions per place. [2021-03-25 15:02:04,790 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 11 selfloop transitions, 21 changer transitions 7/51 dead transitions. [2021-03-25 15:02:04,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 752 flow [2021-03-25 15:02:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 15:02:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 15:02:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 15:02:04,791 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223684210526315 [2021-03-25 15:02:04,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 15:02:04,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 15:02:04,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:04,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 15:02:04,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,794 INFO L185 Difference]: Start difference. First operand has 55 places, 46 transitions, 592 flow. Second operand 4 states and 375 transitions. [2021-03-25 15:02:04,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 752 flow [2021-03-25 15:02:04,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 731 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 15:02:04,800 INFO L241 Difference]: Finished difference. Result has 58 places, 42 transitions, 558 flow [2021-03-25 15:02:04,800 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2021-03-25 15:02:04,800 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2021-03-25 15:02:04,801 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:04,801 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 42 transitions, 558 flow [2021-03-25 15:02:04,801 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 42 transitions, 558 flow [2021-03-25 15:02:04,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 42 transitions, 558 flow [2021-03-25 15:02:04,832 INFO L129 PetriNetUnfolder]: 159/403 cut-off events. [2021-03-25 15:02:04,832 INFO L130 PetriNetUnfolder]: For 1702/1820 co-relation queries the response was YES. [2021-03-25 15:02:04,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 403 events. 159/403 cut-off events. For 1702/1820 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2631 event pairs, 61 based on Foata normal form. 6/385 useless extension candidates. Maximal degree in co-relation 1622. Up to 295 conditions per place. [2021-03-25 15:02:04,836 INFO L142 LiptonReduction]: Number of co-enabled transitions 214 [2021-03-25 15:02:04,842 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 15:02:04,842 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:02:04,843 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-03-25 15:02:04,845 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 558 flow [2021-03-25 15:02:04,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,845 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:04,845 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:04,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 15:02:04,845 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:04,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:04,846 INFO L82 PathProgramCache]: Analyzing trace with hash 725328041, now seen corresponding path program 1 times [2021-03-25 15:02:04,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:04,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057567552] [2021-03-25 15:02:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:04,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:04,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:04,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:04,904 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 15:02:04,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:02:04,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:04,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057567552] [2021-03-25 15:02:04,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:04,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 15:02:04,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311175089] [2021-03-25 15:02:04,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 15:02:04,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:04,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 15:02:04,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 15:02:04,909 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-25 15:02:04,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,910 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:04,910 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-25 15:02:04,910 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:04,972 INFO L129 PetriNetUnfolder]: 126/365 cut-off events. [2021-03-25 15:02:04,972 INFO L130 PetriNetUnfolder]: For 1747/2072 co-relation queries the response was YES. [2021-03-25 15:02:04,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 365 events. 126/365 cut-off events. For 1747/2072 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 2469 event pairs, 9 based on Foata normal form. 88/442 useless extension candidates. Maximal degree in co-relation 1639. Up to 283 conditions per place. [2021-03-25 15:02:04,974 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 5 selfloop transitions, 7 changer transitions 19/52 dead transitions. [2021-03-25 15:02:04,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 654 flow [2021-03-25 15:02:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 15:02:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 15:02:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2021-03-25 15:02:04,975 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7763157894736842 [2021-03-25 15:02:04,976 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2021-03-25 15:02:04,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2021-03-25 15:02:04,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:04,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2021-03-25 15:02:04,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,978 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:04,978 INFO L185 Difference]: Start difference. First operand has 58 places, 42 transitions, 558 flow. Second operand 6 states and 531 transitions. [2021-03-25 15:02:04,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 654 flow [2021-03-25 15:02:04,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 52 transitions, 597 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 15:02:04,983 INFO L241 Difference]: Finished difference. Result has 63 places, 33 transitions, 437 flow [2021-03-25 15:02:04,983 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=437, PETRI_PLACES=63, PETRI_TRANSITIONS=33} [2021-03-25 15:02:04,983 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2021-03-25 15:02:04,983 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:04,983 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 33 transitions, 437 flow [2021-03-25 15:02:04,983 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 33 transitions, 437 flow [2021-03-25 15:02:04,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 33 transitions, 437 flow [2021-03-25 15:02:04,990 INFO L129 PetriNetUnfolder]: 24/90 cut-off events. [2021-03-25 15:02:04,990 INFO L130 PetriNetUnfolder]: For 514/591 co-relation queries the response was YES. [2021-03-25 15:02:04,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 90 events. 24/90 cut-off events. For 514/591 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 334 event pairs, 3 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 490. Up to 61 conditions per place. [2021-03-25 15:02:04,990 INFO L142 LiptonReduction]: Number of co-enabled transitions 122 [2021-03-25 15:02:05,058 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 15:02:05,058 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 15:02:05,058 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 75 [2021-03-25 15:02:05,058 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 32 transitions, 435 flow [2021-03-25 15:02:05,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:05,059 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 15:02:05,059 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 15:02:05,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 15:02:05,059 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 15:02:05,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 15:02:05,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2129966832, now seen corresponding path program 1 times [2021-03-25 15:02:05,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 15:02:05,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580069479] [2021-03-25 15:02:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 15:02:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 15:02:05,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:05,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:05,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:05,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:05,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 15:02:05,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 15:02:05,123 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 15:02:05,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 15:02:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 15:02:05,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580069479] [2021-03-25 15:02:05,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 15:02:05,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 15:02:05,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725442802] [2021-03-25 15:02:05,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 15:02:05,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 15:02:05,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 15:02:05,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 15:02:05,130 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2021-03-25 15:02:05,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 32 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:05,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 15:02:05,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2021-03-25 15:02:05,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 15:02:05,148 INFO L129 PetriNetUnfolder]: 15/60 cut-off events. [2021-03-25 15:02:05,148 INFO L130 PetriNetUnfolder]: For 495/637 co-relation queries the response was YES. [2021-03-25 15:02:05,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 60 events. 15/60 cut-off events. For 495/637 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 188 event pairs, 0 based on Foata normal form. 39/96 useless extension candidates. Maximal degree in co-relation 385. Up to 37 conditions per place. [2021-03-25 15:02:05,149 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2021-03-25 15:02:05,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 31 transitions, 429 flow [2021-03-25 15:02:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 15:02:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 15:02:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2021-03-25 15:02:05,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7582608695652174 [2021-03-25 15:02:05,150 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2021-03-25 15:02:05,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2021-03-25 15:02:05,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 15:02:05,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2021-03-25 15:02:05,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:05,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:05,152 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:05,152 INFO L185 Difference]: Start difference. First operand has 60 places, 32 transitions, 435 flow. Second operand 5 states and 436 transitions. [2021-03-25 15:02:05,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 31 transitions, 429 flow [2021-03-25 15:02:05,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 31 transitions, 292 flow, removed 12 selfloop flow, removed 14 redundant places. [2021-03-25 15:02:05,154 INFO L241 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2021-03-25 15:02:05,154 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2021-03-25 15:02:05,154 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2021-03-25 15:02:05,154 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 15:02:05,155 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 0 transitions, 0 flow [2021-03-25 15:02:05,155 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 0 transitions, 0 flow [2021-03-25 15:02:05,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 15:02:05,155 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 15:02:05,155 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 15:02:05,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 15:02:05,155 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 15:02:05,155 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 15:02:05,155 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 15:02:05,155 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 15:02:05,156 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 15:02:05,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 15:02:05,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 15:02:05,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 03:02:05 BasicIcfg [2021-03-25 15:02:05,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 15:02:05,159 INFO L168 Benchmark]: Toolchain (without parser) took 4184.28 ms. Allocated memory was 406.8 MB in the beginning and 528.5 MB in the end (delta: 121.6 MB). Free memory was 368.8 MB in the beginning and 494.8 MB in the end (delta: -126.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:02:05,159 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 406.8 MB. Free memory was 387.8 MB in the beginning and 387.7 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:02:05,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.76 ms. Allocated memory is still 406.8 MB. Free memory was 368.7 MB in the beginning and 369.2 MB in the end (delta: -502.8 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2021-03-25 15:02:05,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.74 ms. Allocated memory is still 406.8 MB. Free memory was 369.2 MB in the beginning and 367.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:02:05,160 INFO L168 Benchmark]: Boogie Preprocessor took 17.25 ms. Allocated memory is still 406.8 MB. Free memory was 367.1 MB in the beginning and 366.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:02:05,160 INFO L168 Benchmark]: RCFGBuilder took 413.17 ms. Allocated memory is still 406.8 MB. Free memory was 366.0 MB in the beginning and 341.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 15:02:05,160 INFO L168 Benchmark]: TraceAbstraction took 3266.93 ms. Allocated memory was 406.8 MB in the beginning and 528.5 MB in the end (delta: 121.6 MB). Free memory was 341.9 MB in the beginning and 494.8 MB in the end (delta: -152.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 15:02:05,161 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 406.8 MB. Free memory was 387.8 MB in the beginning and 387.7 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 439.76 ms. Allocated memory is still 406.8 MB. Free memory was 368.7 MB in the beginning and 369.2 MB in the end (delta: -502.8 kB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.74 ms. Allocated memory is still 406.8 MB. Free memory was 369.2 MB in the beginning and 367.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.25 ms. Allocated memory is still 406.8 MB. Free memory was 367.1 MB in the beginning and 366.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 413.17 ms. Allocated memory is still 406.8 MB. Free memory was 366.0 MB in the beginning and 341.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3266.93 ms. Allocated memory was 406.8 MB in the beginning and 528.5 MB in the end (delta: 121.6 MB). Free memory was 341.9 MB in the beginning and 494.8 MB in the end (delta: -152.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1056.5ms, 67 PlacesBefore, 30 PlacesAfterwards, 58 TransitionsBefore, 20 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1207 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 760, positive: 718, positive conditional: 0, positive unconditional: 718, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 590, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 590, positive: 560, positive conditional: 0, positive unconditional: 560, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 590, positive: 549, positive conditional: 0, positive unconditional: 549, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 145, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 86, negative conditional: 0, negative unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 760, positive: 158, positive conditional: 0, positive unconditional: 158, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 590, unknown conditional: 0, unknown unconditional: 590] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 612.7ms, 31 PlacesBefore, 28 PlacesAfterwards, 26 TransitionsBefore, 23 TransitionsAfterwards, 172 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 204 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 170, positive: 157, positive conditional: 0, positive unconditional: 157, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 21, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 21, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 21, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 170, positive: 140, positive conditional: 0, positive unconditional: 140, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 21, unknown conditional: 0, unknown unconditional: 21] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.0ms, 29 PlacesBefore, 29 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 62 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 62, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 62, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.7ms, 34 PlacesBefore, 34 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 198 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 111 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 108, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 108, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.2ms, 40 PlacesBefore, 40 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 226 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 131 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 130, positive: 123, positive conditional: 0, positive unconditional: 123, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 130, positive: 123, positive conditional: 0, positive unconditional: 123, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.4ms, 46 PlacesBefore, 46 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 224 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 116 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 115, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 115, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.0ms, 53 PlacesBefore, 53 PlacesAfterwards, 51 TransitionsBefore, 50 TransitionsAfterwards, 388 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 33 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, 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): 69, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.0ms, 55 PlacesBefore, 55 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 246 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.6ms, 58 PlacesBefore, 58 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 214 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 74.6ms, 63 PlacesBefore, 60 PlacesAfterwards, 33 TransitionsBefore, 32 TransitionsAfterwards, 122 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4ms, 49 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3175.7ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 480.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1130.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 81 SDtfs, 23 SDslu, 37 SDs, 0 SdLazy, 112 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 113.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=592occurred in iteration=7, InterpolantAutomatonStates: 42, 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: 25.1ms SsaConstructionTime, 131.5ms SatisfiabilityAnalysisTime, 398.5ms InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 498 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...