/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 00:48:00,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 00:48:00,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 00:48:00,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 00:48:00,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 00:48:00,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 00:48:00,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 00:48:00,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 00:48:00,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 00:48:00,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 00:48:00,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 00:48:00,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 00:48:00,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 00:48:00,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 00:48:00,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 00:48:00,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 00:48:00,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 00:48:00,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 00:48:00,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 00:48:00,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 00:48:00,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 00:48:00,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 00:48:00,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 00:48:00,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 00:48:00,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 00:48:00,530 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 00:48:00,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 00:48:00,531 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 00:48:00,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 00:48:00,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 00:48:00,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 00:48:00,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 00:48:00,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 00:48:00,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 00:48:00,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 00:48:00,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 00:48:00,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 00:48:00,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 00:48:00,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 00:48:00,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 00:48:00,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 00:48:00,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 00:48:00,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:48:00,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 00:48:00,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 00:48:00,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 00:48:00,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 00:48:00,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 00:48:00,539 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 00:48:00,539 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 00:48:00,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 00:48:00,540 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 00:48:00,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 00:48:01,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 00:48:01,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 00:48:01,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 00:48:01,020 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 00:48:01,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2021-04-29 00:48:01,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2294e6c/3fa0f9ef2f494ea8b0ac6a916b646994/FLAG29530c1a4 [2021-04-29 00:48:01,946 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 00:48:01,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.oepc.i [2021-04-29 00:48:01,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2294e6c/3fa0f9ef2f494ea8b0ac6a916b646994/FLAG29530c1a4 [2021-04-29 00:48:01,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e2294e6c/3fa0f9ef2f494ea8b0ac6a916b646994 [2021-04-29 00:48:01,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 00:48:02,049 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 00:48:02,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 00:48:02,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 00:48:02,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 00:48:02,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:48:01" (1/1) ... [2021-04-29 00:48:02,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cada49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02, skipping insertion in model container [2021-04-29 00:48:02,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:48:01" (1/1) ... [2021-04-29 00:48:02,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 00:48:02,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 00:48:02,293 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/safe035_rmo.oepc.i[950,963] [2021-04-29 00:48:02,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:48:02,473 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 00:48:02,489 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/safe035_rmo.oepc.i[950,963] [2021-04-29 00:48:02,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:48:02,702 INFO L208 MainTranslator]: Completed translation [2021-04-29 00:48:02,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02 WrapperNode [2021-04-29 00:48:02,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 00:48:02,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 00:48:02,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 00:48:02,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 00:48:02,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... [2021-04-29 00:48:02,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... [2021-04-29 00:48:02,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 00:48:02,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 00:48:02,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 00:48:02,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 00:48:02,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... [2021-04-29 00:48:02,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... [2021-04-29 00:48:02,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... [2021-04-29 00:48:02,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... [2021-04-29 00:48:02,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... [2021-04-29 00:48:02,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... [2021-04-29 00:48:02,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... [2021-04-29 00:48:02,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 00:48:02,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 00:48:02,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 00:48:02,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 00:48:02,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:48:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 00:48:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 00:48:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 00:48:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 00:48:02,965 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-29 00:48:02,965 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-29 00:48:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-29 00:48:02,966 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-29 00:48:02,966 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-29 00:48:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-29 00:48:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 00:48:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 00:48:02,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 00:48:02,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 00:48:02,969 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 00:48:03,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 00:48:03,410 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-29 00:48:03,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:48:03 BoogieIcfgContainer [2021-04-29 00:48:03,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 00:48:03,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 00:48:03,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 00:48:03,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 00:48:03,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 12:48:01" (1/3) ... [2021-04-29 00:48:03,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294f362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:48:03, skipping insertion in model container [2021-04-29 00:48:03,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:48:02" (2/3) ... [2021-04-29 00:48:03,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294f362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:48:03, skipping insertion in model container [2021-04-29 00:48:03,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:48:03" (3/3) ... [2021-04-29 00:48:03,426 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_rmo.oepc.i [2021-04-29 00:48:03,433 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 00:48:03,439 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 00:48:03,441 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 00:48:03,505 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,505 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,509 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,510 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,510 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,510 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,510 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,511 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,512 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,512 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,517 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,518 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,519 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,519 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,520 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,521 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,525 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,525 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,534 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,534 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,535 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,535 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,545 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,546 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,546 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,546 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:48:03,549 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 00:48:03,581 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 00:48:03,629 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 00:48:03,629 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 00:48:03,629 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 00:48:03,629 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 00:48:03,630 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 00:48:03,630 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 00:48:03,630 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 00:48:03,630 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 00:48:03,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-04-29 00:48:03,695 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-04-29 00:48:03,695 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:48:03,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-04-29 00:48:03,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-04-29 00:48:03,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-04-29 00:48:03,708 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:48:03,725 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-29 00:48:03,729 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-04-29 00:48:03,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-04-29 00:48:03,759 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-04-29 00:48:03,760 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:48:03,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-04-29 00:48:03,765 INFO L146 LiptonReduction]: Number of co-enabled transitions 864 [2021-04-29 00:48:07,706 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:48:07,860 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:48:08,022 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:48:08,212 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:48:08,397 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:48:08,570 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:48:08,774 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:48:09,020 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:48:09,243 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:48:09,445 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:48:09,614 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2021-04-29 00:48:11,005 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-29 00:48:11,325 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-04-29 00:48:12,484 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-29 00:48:12,800 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-04-29 00:48:12,902 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-04-29 00:48:13,220 INFO L158 LiptonReduction]: Checked pairs total: 5618 [2021-04-29 00:48:13,220 INFO L160 LiptonReduction]: Total number of compositions: 88 [2021-04-29 00:48:13,224 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9518 [2021-04-29 00:48:13,246 INFO L129 PetriNetUnfolder]: 0/63 cut-off events. [2021-04-29 00:48:13,247 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:48:13,247 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:48:13,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:48:13,248 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:48:13,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:48:13,254 INFO L82 PathProgramCache]: Analyzing trace with hash 361884970, now seen corresponding path program 1 times [2021-04-29 00:48:13,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:48:13,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650823792] [2021-04-29 00:48:13,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:48:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:48:13,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:13,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:48:13,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650823792] [2021-04-29 00:48:13,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:48:13,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:48:13,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315877108] [2021-04-29 00:48:13,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:48:13,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:48:13,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:48:13,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:48:13,627 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 163 [2021-04-29 00:48:13,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:13,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:48:13,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 163 [2021-04-29 00:48:13,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:48:13,800 INFO L129 PetriNetUnfolder]: 139/425 cut-off events. [2021-04-29 00:48:13,800 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:48:13,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 425 events. 139/425 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 2975 event pairs, 85 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 636. Up to 215 conditions per place. [2021-04-29 00:48:13,806 INFO L132 encePairwiseOnDemand]: 152/163 looper letters, 6 selfloop transitions, 3 changer transitions 34/76 dead transitions. [2021-04-29 00:48:13,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 213 flow [2021-04-29 00:48:13,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:48:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:48:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2021-04-29 00:48:13,824 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8241308793456033 [2021-04-29 00:48:13,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2021-04-29 00:48:13,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2021-04-29 00:48:13,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:48:13,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2021-04-29 00:48:13,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:13,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:13,845 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:13,847 INFO L185 Difference]: Start difference. First operand has 78 places, 68 transitions, 145 flow. Second operand 3 states and 403 transitions. [2021-04-29 00:48:13,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 213 flow [2021-04-29 00:48:13,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 00:48:13,854 INFO L241 Difference]: Finished difference. Result has 78 places, 41 transitions, 103 flow [2021-04-29 00:48:13,857 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=78, PETRI_TRANSITIONS=41} [2021-04-29 00:48:13,858 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2021-04-29 00:48:13,858 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:48:13,858 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 41 transitions, 103 flow [2021-04-29 00:48:13,859 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 41 transitions, 103 flow [2021-04-29 00:48:13,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 41 transitions, 103 flow [2021-04-29 00:48:13,866 INFO L129 PetriNetUnfolder]: 3/53 cut-off events. [2021-04-29 00:48:13,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:48:13,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 53 events. 3/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 194 event pairs, 1 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 66. Up to 10 conditions per place. [2021-04-29 00:48:13,869 INFO L146 LiptonReduction]: Number of co-enabled transitions 870 [2021-04-29 00:48:13,897 INFO L158 LiptonReduction]: Checked pairs total: 604 [2021-04-29 00:48:13,898 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:48:13,898 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-04-29 00:48:13,900 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 103 flow [2021-04-29 00:48:13,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:13,901 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:48:13,901 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:48:13,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 00:48:13,901 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:48:13,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:48:13,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1666469150, now seen corresponding path program 1 times [2021-04-29 00:48:13,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:48:13,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213319819] [2021-04-29 00:48:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:48:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:48:13,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:13,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:48:13,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213319819] [2021-04-29 00:48:13,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:48:13,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-04-29 00:48:13,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21349872] [2021-04-29 00:48:13,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-29 00:48:13,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:48:13,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-29 00:48:13,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-29 00:48:13,990 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 163 [2021-04-29 00:48:13,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:13,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:48:13,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 163 [2021-04-29 00:48:13,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:48:14,003 INFO L129 PetriNetUnfolder]: 2/47 cut-off events. [2021-04-29 00:48:14,003 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-04-29 00:48:14,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 47 events. 2/47 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 172 event pairs, 0 based on Foata normal form. 3/28 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2021-04-29 00:48:14,004 INFO L132 encePairwiseOnDemand]: 160/163 looper letters, 1 selfloop transitions, 2 changer transitions 3/41 dead transitions. [2021-04-29 00:48:14,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 109 flow [2021-04-29 00:48:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-29 00:48:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-04-29 00:48:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2021-04-29 00:48:14,009 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.787321063394683 [2021-04-29 00:48:14,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2021-04-29 00:48:14,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2021-04-29 00:48:14,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:48:14,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2021-04-29 00:48:14,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,015 INFO L185 Difference]: Start difference. First operand has 49 places, 41 transitions, 103 flow. Second operand 3 states and 385 transitions. [2021-04-29 00:48:14,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 109 flow [2021-04-29 00:48:14,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-04-29 00:48:14,017 INFO L241 Difference]: Finished difference. Result has 51 places, 38 transitions, 102 flow [2021-04-29 00:48:14,018 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2021-04-29 00:48:14,018 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -27 predicate places. [2021-04-29 00:48:14,018 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:48:14,019 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 38 transitions, 102 flow [2021-04-29 00:48:14,019 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 38 transitions, 102 flow [2021-04-29 00:48:14,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 38 transitions, 102 flow [2021-04-29 00:48:14,025 INFO L129 PetriNetUnfolder]: 2/44 cut-off events. [2021-04-29 00:48:14,025 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-04-29 00:48:14,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 44 events. 2/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 154 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2021-04-29 00:48:14,027 INFO L146 LiptonReduction]: Number of co-enabled transitions 770 [2021-04-29 00:48:14,038 INFO L158 LiptonReduction]: Checked pairs total: 411 [2021-04-29 00:48:14,038 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:48:14,038 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-04-29 00:48:14,040 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 102 flow [2021-04-29 00:48:14,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:48:14,041 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:48:14,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 00:48:14,041 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:48:14,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:48:14,042 INFO L82 PathProgramCache]: Analyzing trace with hash -120935415, now seen corresponding path program 1 times [2021-04-29 00:48:14,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:48:14,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549465081] [2021-04-29 00:48:14,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:48:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:48:14,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:14,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:48:14,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:14,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:14,117 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-29 00:48:14,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 00:48:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:48:14,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549465081] [2021-04-29 00:48:14,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:48:14,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:48:14,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93636931] [2021-04-29 00:48:14,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:48:14,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:48:14,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:48:14,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:48:14,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 163 [2021-04-29 00:48:14,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:48:14,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 163 [2021-04-29 00:48:14,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:48:14,198 INFO L129 PetriNetUnfolder]: 25/154 cut-off events. [2021-04-29 00:48:14,198 INFO L130 PetriNetUnfolder]: For 39/42 co-relation queries the response was YES. [2021-04-29 00:48:14,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 154 events. 25/154 cut-off events. For 39/42 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 869 event pairs, 2 based on Foata normal form. 12/106 useless extension candidates. Maximal degree in co-relation 266. Up to 24 conditions per place. [2021-04-29 00:48:14,200 INFO L132 encePairwiseOnDemand]: 156/163 looper letters, 6 selfloop transitions, 6 changer transitions 4/45 dead transitions. [2021-04-29 00:48:14,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 156 flow [2021-04-29 00:48:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:48:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:48:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 445 transitions. [2021-04-29 00:48:14,204 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6825153374233128 [2021-04-29 00:48:14,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 445 transitions. [2021-04-29 00:48:14,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 445 transitions. [2021-04-29 00:48:14,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:48:14,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 445 transitions. [2021-04-29 00:48:14,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,210 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,211 INFO L185 Difference]: Start difference. First operand has 48 places, 38 transitions, 102 flow. Second operand 4 states and 445 transitions. [2021-04-29 00:48:14,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 156 flow [2021-04-29 00:48:14,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:48:14,213 INFO L241 Difference]: Finished difference. Result has 52 places, 39 transitions, 131 flow [2021-04-29 00:48:14,214 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2021-04-29 00:48:14,214 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -26 predicate places. [2021-04-29 00:48:14,214 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:48:14,214 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 39 transitions, 131 flow [2021-04-29 00:48:14,215 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 39 transitions, 131 flow [2021-04-29 00:48:14,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 39 transitions, 131 flow [2021-04-29 00:48:14,227 INFO L129 PetriNetUnfolder]: 13/103 cut-off events. [2021-04-29 00:48:14,228 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-04-29 00:48:14,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 103 events. 13/103 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 530 event pairs, 4 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 186. Up to 19 conditions per place. [2021-04-29 00:48:14,231 INFO L146 LiptonReduction]: Number of co-enabled transitions 750 [2021-04-29 00:48:14,245 INFO L158 LiptonReduction]: Checked pairs total: 76 [2021-04-29 00:48:14,245 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:48:14,245 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-04-29 00:48:14,247 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 131 flow [2021-04-29 00:48:14,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,248 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:48:14,248 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:48:14,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 00:48:14,248 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:48:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:48:14,249 INFO L82 PathProgramCache]: Analyzing trace with hash 530313409, now seen corresponding path program 1 times [2021-04-29 00:48:14,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:48:14,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375570284] [2021-04-29 00:48:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:48:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:48:14,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:14,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:14,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:14,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 00:48:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:48:14,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375570284] [2021-04-29 00:48:14,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:48:14,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:48:14,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301742075] [2021-04-29 00:48:14,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:48:14,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:48:14,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:48:14,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:48:14,364 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 163 [2021-04-29 00:48:14,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:14,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:48:14,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 163 [2021-04-29 00:48:14,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:48:15,546 INFO L129 PetriNetUnfolder]: 5689/9362 cut-off events. [2021-04-29 00:48:15,546 INFO L130 PetriNetUnfolder]: For 2392/3685 co-relation queries the response was YES. [2021-04-29 00:48:15,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19156 conditions, 9362 events. 5689/9362 cut-off events. For 2392/3685 co-relation queries the response was YES. Maximal size of possible extension queue 2352. Compared 84084 event pairs, 2478 based on Foata normal form. 93/2432 useless extension candidates. Maximal degree in co-relation 19141. Up to 6064 conditions per place. [2021-04-29 00:48:15,608 INFO L132 encePairwiseOnDemand]: 145/163 looper letters, 27 selfloop transitions, 25 changer transitions 6/75 dead transitions. [2021-04-29 00:48:15,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 319 flow [2021-04-29 00:48:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:48:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:48:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2021-04-29 00:48:15,612 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7190184049079754 [2021-04-29 00:48:15,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2021-04-29 00:48:15,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2021-04-29 00:48:15,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:48:15,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2021-04-29 00:48:15,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:15,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:15,620 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:15,620 INFO L185 Difference]: Start difference. First operand has 52 places, 39 transitions, 131 flow. Second operand 5 states and 586 transitions. [2021-04-29 00:48:15,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 319 flow [2021-04-29 00:48:15,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 315 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-04-29 00:48:15,626 INFO L241 Difference]: Finished difference. Result has 58 places, 62 transitions, 320 flow [2021-04-29 00:48:15,627 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2021-04-29 00:48:15,627 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -20 predicate places. [2021-04-29 00:48:15,627 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:48:15,628 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 62 transitions, 320 flow [2021-04-29 00:48:15,628 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 62 transitions, 320 flow [2021-04-29 00:48:15,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 62 transitions, 320 flow [2021-04-29 00:48:16,471 INFO L129 PetriNetUnfolder]: 4588/7973 cut-off events. [2021-04-29 00:48:16,472 INFO L130 PetriNetUnfolder]: For 3373/6133 co-relation queries the response was YES. [2021-04-29 00:48:16,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22593 conditions, 7973 events. 4588/7973 cut-off events. For 3373/6133 co-relation queries the response was YES. Maximal size of possible extension queue 1764. Compared 73207 event pairs, 2391 based on Foata normal form. 10/2169 useless extension candidates. Maximal degree in co-relation 22576. Up to 7545 conditions per place. [2021-04-29 00:48:16,622 INFO L146 LiptonReduction]: Number of co-enabled transitions 938 [2021-04-29 00:48:16,642 INFO L158 LiptonReduction]: Checked pairs total: 90 [2021-04-29 00:48:16,643 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:48:16,643 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1016 [2021-04-29 00:48:16,648 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 320 flow [2021-04-29 00:48:16,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:16,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:48:16,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:48:16,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 00:48:16,649 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:48:16,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:48:16,650 INFO L82 PathProgramCache]: Analyzing trace with hash -740374906, now seen corresponding path program 1 times [2021-04-29 00:48:16,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:48:16,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169557993] [2021-04-29 00:48:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:48:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:48:16,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:16,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:16,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:16,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:16,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:16,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 00:48:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:48:16,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169557993] [2021-04-29 00:48:16,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:48:16,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:48:16,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434792673] [2021-04-29 00:48:16,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:48:16,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:48:16,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:48:16,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:48:16,806 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 163 [2021-04-29 00:48:16,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:16,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:48:16,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 163 [2021-04-29 00:48:16,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:48:18,158 INFO L129 PetriNetUnfolder]: 4837/9305 cut-off events. [2021-04-29 00:48:18,158 INFO L130 PetriNetUnfolder]: For 6127/30584 co-relation queries the response was YES. [2021-04-29 00:48:18,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35321 conditions, 9305 events. 4837/9305 cut-off events. For 6127/30584 co-relation queries the response was YES. Maximal size of possible extension queue 2730. Compared 98755 event pairs, 525 based on Foata normal form. 154/2942 useless extension candidates. Maximal degree in co-relation 35302. Up to 8595 conditions per place. [2021-04-29 00:48:18,231 INFO L132 encePairwiseOnDemand]: 145/163 looper letters, 22 selfloop transitions, 48 changer transitions 12/99 dead transitions. [2021-04-29 00:48:18,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 683 flow [2021-04-29 00:48:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 00:48:18,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 00:48:18,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 819 transitions. [2021-04-29 00:48:18,236 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7177914110429447 [2021-04-29 00:48:18,236 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 819 transitions. [2021-04-29 00:48:18,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 819 transitions. [2021-04-29 00:48:18,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:48:18,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 819 transitions. [2021-04-29 00:48:18,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:18,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:18,245 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:18,245 INFO L185 Difference]: Start difference. First operand has 58 places, 62 transitions, 320 flow. Second operand 7 states and 819 transitions. [2021-04-29 00:48:18,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 683 flow [2021-04-29 00:48:18,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 679 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-04-29 00:48:18,276 INFO L241 Difference]: Finished difference. Result has 66 places, 85 transitions, 634 flow [2021-04-29 00:48:18,277 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=634, PETRI_PLACES=66, PETRI_TRANSITIONS=85} [2021-04-29 00:48:18,277 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -12 predicate places. [2021-04-29 00:48:18,277 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:48:18,277 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 85 transitions, 634 flow [2021-04-29 00:48:18,278 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 85 transitions, 634 flow [2021-04-29 00:48:18,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 85 transitions, 634 flow [2021-04-29 00:48:18,956 INFO L129 PetriNetUnfolder]: 2286/6126 cut-off events. [2021-04-29 00:48:18,957 INFO L130 PetriNetUnfolder]: For 10112/14484 co-relation queries the response was YES. [2021-04-29 00:48:18,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26144 conditions, 6126 events. 2286/6126 cut-off events. For 10112/14484 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 76937 event pairs, 516 based on Foata normal form. 8/1774 useless extension candidates. Maximal degree in co-relation 26123. Up to 5619 conditions per place. [2021-04-29 00:48:19,075 INFO L146 LiptonReduction]: Number of co-enabled transitions 1202 [2021-04-29 00:48:19,113 INFO L158 LiptonReduction]: Checked pairs total: 112 [2021-04-29 00:48:19,113 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:48:19,114 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 837 [2021-04-29 00:48:19,124 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 85 transitions, 634 flow [2021-04-29 00:48:19,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:19,125 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:48:19,125 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:48:19,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 00:48:19,125 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:48:19,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:48:19,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1445517428, now seen corresponding path program 1 times [2021-04-29 00:48:19,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:48:19,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825021148] [2021-04-29 00:48:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:48:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:48:19,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:19,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:19,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:19,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:19,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:19,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:19,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:19,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 00:48:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:48:19,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825021148] [2021-04-29 00:48:19,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:48:19,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:48:19,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874902430] [2021-04-29 00:48:19,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 00:48:19,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:48:19,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 00:48:19,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 00:48:19,216 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 163 [2021-04-29 00:48:19,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 85 transitions, 634 flow. Second operand has 6 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:19,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:48:19,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 163 [2021-04-29 00:48:19,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:48:20,325 INFO L129 PetriNetUnfolder]: 1921/6065 cut-off events. [2021-04-29 00:48:20,325 INFO L130 PetriNetUnfolder]: For 8601/36881 co-relation queries the response was YES. [2021-04-29 00:48:20,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31516 conditions, 6065 events. 1921/6065 cut-off events. For 8601/36881 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 82957 event pairs, 3 based on Foata normal form. 151/2042 useless extension candidates. Maximal degree in co-relation 31493. Up to 5418 conditions per place. [2021-04-29 00:48:20,374 INFO L132 encePairwiseOnDemand]: 145/163 looper letters, 5 selfloop transitions, 64 changer transitions 19/105 dead transitions. [2021-04-29 00:48:20,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 105 transitions, 944 flow [2021-04-29 00:48:20,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-29 00:48:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-04-29 00:48:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1034 transitions. [2021-04-29 00:48:20,379 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7048398091342877 [2021-04-29 00:48:20,379 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1034 transitions. [2021-04-29 00:48:20,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1034 transitions. [2021-04-29 00:48:20,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:48:20,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1034 transitions. [2021-04-29 00:48:20,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 114.88888888888889) internal successors, (1034), 9 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:20,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:20,388 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:20,389 INFO L185 Difference]: Start difference. First operand has 66 places, 85 transitions, 634 flow. Second operand 9 states and 1034 transitions. [2021-04-29 00:48:20,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 105 transitions, 944 flow [2021-04-29 00:48:20,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 825 flow, removed 37 selfloop flow, removed 3 redundant places. [2021-04-29 00:48:20,707 INFO L241 Difference]: Finished difference. Result has 74 places, 84 transitions, 684 flow [2021-04-29 00:48:20,707 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=684, PETRI_PLACES=74, PETRI_TRANSITIONS=84} [2021-04-29 00:48:20,707 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2021-04-29 00:48:20,708 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:48:20,708 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 84 transitions, 684 flow [2021-04-29 00:48:20,708 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 84 transitions, 684 flow [2021-04-29 00:48:20,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 84 transitions, 684 flow [2021-04-29 00:48:21,051 INFO L129 PetriNetUnfolder]: 730/3071 cut-off events. [2021-04-29 00:48:21,052 INFO L130 PetriNetUnfolder]: For 4673/8065 co-relation queries the response was YES. [2021-04-29 00:48:21,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13760 conditions, 3071 events. 730/3071 cut-off events. For 4673/8065 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 41733 event pairs, 3 based on Foata normal form. 4/849 useless extension candidates. Maximal degree in co-relation 13736. Up to 2034 conditions per place. [2021-04-29 00:48:21,105 INFO L146 LiptonReduction]: Number of co-enabled transitions 1152 [2021-04-29 00:48:21,129 INFO L158 LiptonReduction]: Checked pairs total: 106 [2021-04-29 00:48:21,129 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:48:21,130 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 422 [2021-04-29 00:48:21,131 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 84 transitions, 684 flow [2021-04-29 00:48:21,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:21,132 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:48:21,132 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:48:21,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 00:48:21,133 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:48:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:48:21,133 INFO L82 PathProgramCache]: Analyzing trace with hash -824826597, now seen corresponding path program 1 times [2021-04-29 00:48:21,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:48:21,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837352957] [2021-04-29 00:48:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:48:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:48:21,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:21,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:48:21,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:21,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:21,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:21,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:21,200 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-04-29 00:48:21,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-29 00:48:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:48:21,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837352957] [2021-04-29 00:48:21,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:48:21,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:48:21,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403011758] [2021-04-29 00:48:21,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:48:21,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:48:21,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:48:21,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:48:21,219 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 163 [2021-04-29 00:48:21,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 84 transitions, 684 flow. Second operand has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:21,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:48:21,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 163 [2021-04-29 00:48:21,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:48:21,857 INFO L129 PetriNetUnfolder]: 1382/5283 cut-off events. [2021-04-29 00:48:21,857 INFO L130 PetriNetUnfolder]: For 10033/18166 co-relation queries the response was YES. [2021-04-29 00:48:21,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23660 conditions, 5283 events. 1382/5283 cut-off events. For 10033/18166 co-relation queries the response was YES. Maximal size of possible extension queue 1803. Compared 75967 event pairs, 2 based on Foata normal form. 33/1526 useless extension candidates. Maximal degree in co-relation 23634. Up to 3636 conditions per place. [2021-04-29 00:48:21,906 INFO L132 encePairwiseOnDemand]: 156/163 looper letters, 9 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2021-04-29 00:48:21,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 91 transitions, 755 flow [2021-04-29 00:48:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 00:48:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 00:48:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 659 transitions. [2021-04-29 00:48:21,910 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6738241308793456 [2021-04-29 00:48:21,910 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 659 transitions. [2021-04-29 00:48:21,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 659 transitions. [2021-04-29 00:48:21,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:48:21,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 659 transitions. [2021-04-29 00:48:21,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:21,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:21,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:21,917 INFO L185 Difference]: Start difference. First operand has 71 places, 84 transitions, 684 flow. Second operand 6 states and 659 transitions. [2021-04-29 00:48:21,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 91 transitions, 755 flow [2021-04-29 00:48:23,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 557 flow, removed 46 selfloop flow, removed 8 redundant places. [2021-04-29 00:48:23,498 INFO L241 Difference]: Finished difference. Result has 72 places, 88 transitions, 547 flow [2021-04-29 00:48:23,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=72, PETRI_TRANSITIONS=88} [2021-04-29 00:48:23,499 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -6 predicate places. [2021-04-29 00:48:23,499 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:48:23,499 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 88 transitions, 547 flow [2021-04-29 00:48:23,499 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 88 transitions, 547 flow [2021-04-29 00:48:23,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 88 transitions, 547 flow [2021-04-29 00:48:23,927 INFO L129 PetriNetUnfolder]: 1382/5283 cut-off events. [2021-04-29 00:48:23,927 INFO L130 PetriNetUnfolder]: For 3691/4104 co-relation queries the response was YES. [2021-04-29 00:48:23,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18928 conditions, 5283 events. 1382/5283 cut-off events. For 3691/4104 co-relation queries the response was YES. Maximal size of possible extension queue 1752. Compared 76711 event pairs, 3 based on Foata normal form. 4/1416 useless extension candidates. Maximal degree in co-relation 18903. Up to 3636 conditions per place. [2021-04-29 00:48:23,989 INFO L146 LiptonReduction]: Number of co-enabled transitions 1488 [2021-04-29 00:48:24,039 INFO L158 LiptonReduction]: Checked pairs total: 159 [2021-04-29 00:48:24,040 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:48:24,040 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 541 [2021-04-29 00:48:24,041 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 88 transitions, 547 flow [2021-04-29 00:48:24,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:24,042 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:48:24,042 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:48:24,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-29 00:48:24,043 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:48:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:48:24,043 INFO L82 PathProgramCache]: Analyzing trace with hash 83178683, now seen corresponding path program 1 times [2021-04-29 00:48:24,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:48:24,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651181522] [2021-04-29 00:48:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:48:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:48:24,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:24,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:48:24,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:24,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:24,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:48:24,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:48:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:48:24,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651181522] [2021-04-29 00:48:24,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:48:24,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:48:24,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571518006] [2021-04-29 00:48:24,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:48:24,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:48:24,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:48:24,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:48:24,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 163 [2021-04-29 00:48:24,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 88 transitions, 547 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:24,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:48:24,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 163 [2021-04-29 00:48:24,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:48:24,798 INFO L129 PetriNetUnfolder]: 1673/6589 cut-off events. [2021-04-29 00:48:24,798 INFO L130 PetriNetUnfolder]: For 5599/6332 co-relation queries the response was YES. [2021-04-29 00:48:24,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23386 conditions, 6589 events. 1673/6589 cut-off events. For 5599/6332 co-relation queries the response was YES. Maximal size of possible extension queue 2505. Compared 99897 event pairs, 3 based on Foata normal form. 34/1881 useless extension candidates. Maximal degree in co-relation 23359. Up to 4554 conditions per place. [2021-04-29 00:48:24,829 INFO L132 encePairwiseOnDemand]: 160/163 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2021-04-29 00:48:24,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 557 flow [2021-04-29 00:48:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:48:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:48:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 465 transitions. [2021-04-29 00:48:24,832 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7131901840490797 [2021-04-29 00:48:24,832 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 465 transitions. [2021-04-29 00:48:24,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 465 transitions. [2021-04-29 00:48:24,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:48:24,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 465 transitions. [2021-04-29 00:48:24,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:24,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:24,837 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:24,837 INFO L185 Difference]: Start difference. First operand has 72 places, 88 transitions, 547 flow. Second operand 4 states and 465 transitions. [2021-04-29 00:48:24,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 557 flow [2021-04-29 00:48:26,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 490 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-04-29 00:48:26,741 INFO L241 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2021-04-29 00:48:26,742 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2021-04-29 00:48:26,742 INFO L343 CegarLoopForPetriNet]: 78 programPoint places, -12 predicate places. [2021-04-29 00:48:26,742 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:48:26,742 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 0 transitions, 0 flow [2021-04-29 00:48:26,743 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 0 transitions, 0 flow [2021-04-29 00:48:26,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 00:48:26,743 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 00:48:26,743 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:48:26,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-04-29 00:48:26,744 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 00:48:26,744 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:48:26,744 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:48:26,744 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 00:48:26,746 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 00:48:26,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:48:26,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-29 00:48:26,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 12:48:26 BasicIcfg [2021-04-29 00:48:26,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 00:48:26,752 INFO L168 Benchmark]: Toolchain (without parser) took 24759.42 ms. Allocated memory was 302.0 MB in the beginning and 723.5 MB in the end (delta: 421.5 MB). Free memory was 275.4 MB in the beginning and 285.4 MB in the end (delta: -10.1 MB). Peak memory consumption was 414.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:48:26,752 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 302.0 MB. Free memory was 287.0 MB in the beginning and 287.0 MB in the end (delta: 59.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:48:26,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.03 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 271.9 MB in the end (delta: 320.9 kB). Peak memory consumption was 24.8 MB. Max. memory is 16.0 GB. [2021-04-29 00:48:26,759 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.97 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 270.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:48:26,760 INFO L168 Benchmark]: Boogie Preprocessor took 56.45 ms. Allocated memory is still 302.0 MB. Free memory was 269.9 MB in the beginning and 269.0 MB in the end (delta: 882.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:48:26,761 INFO L168 Benchmark]: RCFGBuilder took 557.46 ms. Allocated memory is still 302.0 MB. Free memory was 269.0 MB in the beginning and 246.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:48:26,762 INFO L168 Benchmark]: TraceAbstraction took 23332.64 ms. Allocated memory was 302.0 MB in the beginning and 723.5 MB in the end (delta: 421.5 MB). Free memory was 246.2 MB in the beginning and 285.4 MB in the end (delta: -39.2 MB). Peak memory consumption was 385.2 MB. Max. memory is 16.0 GB. [2021-04-29 00:48:26,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 302.0 MB. Free memory was 287.0 MB in the beginning and 287.0 MB in the end (delta: 59.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 654.03 ms. Allocated memory is still 302.0 MB. Free memory was 272.2 MB in the beginning and 271.9 MB in the end (delta: 320.9 kB). Peak memory consumption was 24.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 86.97 ms. Allocated memory is still 302.0 MB. Free memory was 271.9 MB in the beginning and 270.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 56.45 ms. Allocated memory is still 302.0 MB. Free memory was 269.9 MB in the beginning and 269.0 MB in the end (delta: 882.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 557.46 ms. Allocated memory is still 302.0 MB. Free memory was 269.0 MB in the beginning and 246.8 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 23332.64 ms. Allocated memory was 302.0 MB in the beginning and 723.5 MB in the end (delta: 421.5 MB). Free memory was 246.2 MB in the beginning and 285.4 MB in the end (delta: -39.2 MB). Peak memory consumption was 385.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9491.0ms, 69 PlacesBefore, 78 PlacesAfterwards, 60 TransitionsBefore, 68 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 88 TotalNumberOfCompositions, 5618 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1686, positive: 1520, positive conditional: 1520, positive unconditional: 0, negative: 166, negative conditional: 166, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 913, positive: 857, positive conditional: 0, positive unconditional: 857, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 913, positive: 857, positive conditional: 0, positive unconditional: 857, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 913, positive: 843, positive conditional: 0, positive unconditional: 843, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 70, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 376, positive: 85, positive conditional: 0, positive unconditional: 85, negative: 291, negative conditional: 0, negative unconditional: 291, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1686, positive: 663, positive conditional: 663, positive unconditional: 0, negative: 110, negative conditional: 110, negative unconditional: 0, unknown: 913, unknown conditional: 913, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 899, Positive cache size: 843, Positive conditional cache size: 843, Positive unconditional cache size: 0, Negative cache size: 56, Negative conditional cache size: 56, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38.9ms, 78 PlacesBefore, 49 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 870 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 604 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 75, positive: 54, positive conditional: 54, positive unconditional: 0, negative: 21, negative conditional: 21, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 10, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 10, positive: 5, positive conditional: 0, positive unconditional: 5, 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: 21, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 75, positive: 48, positive conditional: 48, positive unconditional: 0, negative: 17, negative conditional: 17, negative unconditional: 0, unknown: 10, unknown conditional: 10, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 909, Positive cache size: 849, Positive conditional cache size: 849, Positive unconditional cache size: 0, Negative cache size: 60, Negative conditional cache size: 60, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.9ms, 51 PlacesBefore, 48 PlacesAfterwards, 38 TransitionsBefore, 38 TransitionsAfterwards, 770 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 411 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57, positive: 42, positive conditional: 42, positive unconditional: 0, negative: 15, negative conditional: 15, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 57, positive: 41, positive conditional: 41, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 911, Positive cache size: 850, Positive conditional cache size: 850, Positive unconditional cache size: 0, Negative cache size: 61, Negative conditional cache size: 61, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.2ms, 52 PlacesBefore, 52 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 750 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 76 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 16, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 914, Positive cache size: 852, Positive conditional cache size: 852, Positive unconditional cache size: 0, Negative cache size: 62, Negative conditional cache size: 62, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1015.0ms, 58 PlacesBefore, 58 PlacesAfterwards, 62 TransitionsBefore, 62 TransitionsAfterwards, 938 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 3, positive unconditional: 4, 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: 7, positive: 7, positive conditional: 3, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 20, positive: 11, positive conditional: 11, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 921, Positive cache size: 859, Positive conditional cache size: 859, Positive unconditional cache size: 0, Negative cache size: 62, Negative conditional cache size: 62, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 835.8ms, 66 PlacesBefore, 66 PlacesAfterwards, 85 TransitionsBefore, 85 TransitionsAfterwards, 1202 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 112 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 52, positive: 50, positive conditional: 50, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, positive: 21, positive conditional: 11, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 22, positive: 21, positive conditional: 11, positive unconditional: 10, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 22, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 52, positive: 29, positive conditional: 29, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 22, unknown conditional: 22, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 943, Positive cache size: 880, Positive conditional cache size: 880, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 421.4ms, 74 PlacesBefore, 71 PlacesAfterwards, 84 TransitionsBefore, 84 TransitionsAfterwards, 1152 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 54, positive conditional: 54, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 17, 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: 17, positive: 17, positive conditional: 17, 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: 17, positive: 17, positive conditional: 0, positive unconditional: 17, 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: 56, positive: 37, positive conditional: 37, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 960, Positive cache size: 897, Positive conditional cache size: 897, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 540.4ms, 72 PlacesBefore, 72 PlacesAfterwards, 88 TransitionsBefore, 88 TransitionsAfterwards, 1488 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 159 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 75, positive: 72, positive conditional: 72, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 16, positive: 16, positive conditional: 15, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 16, positive: 16, positive conditional: 15, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 16, positive: 16, positive conditional: 0, positive unconditional: 16, 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: 75, positive: 56, positive conditional: 56, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 16, unknown conditional: 16, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 976, Positive cache size: 913, Positive conditional cache size: 913, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3ms, 66 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): 976, Positive cache size: 913, Positive conditional cache size: 913, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 23127.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 9511.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9603.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 69 SDslu, 19 SDs, 0 SdLazy, 330 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 398.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 166.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=684occurred in iteration=6, InterpolantAutomatonStates: 41, 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: 35.5ms SsaConstructionTime, 207.3ms SatisfiabilityAnalysisTime, 572.4ms InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...