/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:11:33,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:11:33,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:11:33,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:11:33,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:11:33,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:11:33,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:11:33,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:11:33,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:11:33,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:11:33,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:11:33,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:11:33,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:11:33,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:11:33,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:11:33,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:11:33,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:11:33,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:11:33,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:11:33,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:11:33,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:11:33,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:11:33,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:11:33,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:11:33,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 23:11:33,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 23:11:33,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 23:11:33,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 23:11:33,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 23:11:33,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 23:11:33,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:11:33,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:11:33,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:11:33,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:11:33,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:11:33,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:11:33,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:11:33,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:11:33,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:11:33,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:11:33,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:11:33,479 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-VariableLbe.epf [2023-01-27 23:11:33,503 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:11:33,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:11:33,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:11:33,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:11:33,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:11:33,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:11:33,504 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:11:33,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:11:33,504 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:11:33,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:11:33,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:11:33,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:11:33,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:11:33,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:11:33,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:11:33,505 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:11:33,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:11:33,505 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:11:33,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:11:33,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:11:33,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:11:33,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:11:33,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:11:33,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:11:33,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:11:33,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:11:33,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:11:33,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:11:33,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:11:33,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:11:33,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:11:33,506 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 23:11:33,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:11:33,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:11:33,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:11:33,699 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:11:33,700 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:11:33,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-01-27 23:11:34,589 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:11:34,733 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:11:34,734 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-01-27 23:11:34,738 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00b102a0f/593d321f095d4964b3b993c94821fcf3/FLAG04a723e89 [2023-01-27 23:11:34,747 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00b102a0f/593d321f095d4964b3b993c94821fcf3 [2023-01-27 23:11:34,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:11:34,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:11:34,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:11:34,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:11:34,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:11:34,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:34,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b6c9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34, skipping insertion in model container [2023-01-27 23:11:34,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:34,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:11:34,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:11:34,911 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c[2644,2657] [2023-01-27 23:11:34,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:11:34,926 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:11:34,944 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c[2644,2657] [2023-01-27 23:11:34,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:11:34,956 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:11:34,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34 WrapperNode [2023-01-27 23:11:34,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:11:34,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:11:34,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:11:34,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:11:34,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:34,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:34,993 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 167 [2023-01-27 23:11:34,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:11:34,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:11:34,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:11:34,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:11:35,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:35,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:35,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:35,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:35,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:35,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:35,013 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:35,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:35,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:11:35,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:11:35,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:11:35,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:11:35,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (1/1) ... [2023-01-27 23:11:35,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:11:35,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:11:35,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 23:11:35,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 23:11:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:11:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:11:35,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:11:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:11:35,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:11:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:11:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:11:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:11:35,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 23:11:35,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:11:35,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:11:35,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:11:35,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:11:35,068 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:11:35,132 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:11:35,133 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:11:35,424 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:11:35,430 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:11:35,430 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-27 23:11:35,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:11:35 BoogieIcfgContainer [2023-01-27 23:11:35,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:11:35,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:11:35,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:11:35,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:11:35,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:11:34" (1/3) ... [2023-01-27 23:11:35,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0d9c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:11:35, skipping insertion in model container [2023-01-27 23:11:35,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:11:34" (2/3) ... [2023-01-27 23:11:35,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0d9c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:11:35, skipping insertion in model container [2023-01-27 23:11:35,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:11:35" (3/3) ... [2023-01-27 23:11:35,437 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2023-01-27 23:11:35,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:11:35,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:11:35,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:11:35,508 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:11:35,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 196 transitions, 408 flow [2023-01-27 23:11:35,583 INFO L130 PetriNetUnfolder]: 17/194 cut-off events. [2023-01-27 23:11:35,583 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:11:35,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 17/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 165 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-01-27 23:11:35,588 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 196 transitions, 408 flow [2023-01-27 23:11:35,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 186 transitions, 384 flow [2023-01-27 23:11:35,594 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:11:35,600 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 186 transitions, 384 flow [2023-01-27 23:11:35,601 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 186 transitions, 384 flow [2023-01-27 23:11:35,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 186 transitions, 384 flow [2023-01-27 23:11:35,655 INFO L130 PetriNetUnfolder]: 17/186 cut-off events. [2023-01-27 23:11:35,655 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:11:35,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 186 events. 17/186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 147 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-01-27 23:11:35,658 INFO L119 LiptonReduction]: Number of co-enabled transitions 3892 [2023-01-27 23:11:39,841 INFO L134 LiptonReduction]: Checked pairs total: 3908 [2023-01-27 23:11:39,841 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-01-27 23:11:39,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:11:39,854 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d0c409c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:11:39,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 23:11:39,858 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-27 23:11:39,858 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:11:39,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:39,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:39,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:39,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1925462898, now seen corresponding path program 1 times [2023-01-27 23:11:39,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:39,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794451904] [2023-01-27 23:11:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:40,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:11:40,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:40,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794451904] [2023-01-27 23:11:40,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794451904] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:11:40,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:11:40,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:11:40,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454286676] [2023-01-27 23:11:40,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:11:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:11:40,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:40,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:11:40,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:11:40,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 426 [2023-01-27 23:11:40,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-01-27 23:11:40,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:40,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 426 [2023-01-27 23:11:40,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:40,275 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2023-01-27 23:11:40,275 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-27 23:11:40,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 186 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-01-27 23:11:40,277 INFO L137 encePairwiseOnDemand]: 423/426 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-27 23:11:40,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-27 23:11:40,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:11:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:11:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-01-27 23:11:40,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4029733959311424 [2023-01-27 23:11:40,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-01-27 23:11:40,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-01-27 23:11:40,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:40,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-01-27 23:11:40,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:11:40,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 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) [2023-01-27 23:11:40,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 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) [2023-01-27 23:11:40,304 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 515 transitions. [2023-01-27 23:11:40,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-27 23:11:40,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 23:11:40,308 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-27 23:11:40,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-27 23:11:40,311 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-27 23:11:40,311 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-27 23:11:40,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-01-27 23:11:40,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:40,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:40,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:11:40,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:40,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:40,312 INFO L85 PathProgramCache]: Analyzing trace with hash 406205141, now seen corresponding path program 1 times [2023-01-27 23:11:40,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:40,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317180996] [2023-01-27 23:11:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:40,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:40,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:40,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:40,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317180996] [2023-01-27 23:11:40,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317180996] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:11:40,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:11:40,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 23:11:40,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912282651] [2023-01-27 23:11:40,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:11:40,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:11:40,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:40,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:11:40,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:11:40,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-27 23:11:40,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2023-01-27 23:11:40,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:40,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-27 23:11:40,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:40,528 INFO L130 PetriNetUnfolder]: 66/117 cut-off events. [2023-01-27 23:11:40,528 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:11:40,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 117 events. 66/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 310 event pairs, 9 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 234. Up to 85 conditions per place. [2023-01-27 23:11:40,532 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 22 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2023-01-27 23:11:40,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 125 flow [2023-01-27 23:11:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:11:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:11:40,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-01-27 23:11:40,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3865414710485133 [2023-01-27 23:11:40,535 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-01-27 23:11:40,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-01-27 23:11:40,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:40,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-01-27 23:11:40,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2023-01-27 23:11:40,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 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) [2023-01-27 23:11:40,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 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) [2023-01-27 23:11:40,541 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 3 states and 494 transitions. [2023-01-27 23:11:40,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 28 transitions, 125 flow [2023-01-27 23:11:40,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 121 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 23:11:40,543 INFO L231 Difference]: Finished difference. Result has 22 places, 20 transitions, 65 flow [2023-01-27 23:11:40,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2023-01-27 23:11:40,543 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-01-27 23:11:40,543 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 65 flow [2023-01-27 23:11:40,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2023-01-27 23:11:40,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:40,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:40,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:11:40,544 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:40,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:40,545 INFO L85 PathProgramCache]: Analyzing trace with hash -91515540, now seen corresponding path program 1 times [2023-01-27 23:11:40,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:40,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371179539] [2023-01-27 23:11:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:40,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:40,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371179539] [2023-01-27 23:11:40,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371179539] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:11:40,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:11:40,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:11:40,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51152550] [2023-01-27 23:11:40,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:11:40,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:11:40,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:40,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:11:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:11:40,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-27 23:11:40,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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) [2023-01-27 23:11:40,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:40,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-27 23:11:40,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:40,812 INFO L130 PetriNetUnfolder]: 85/170 cut-off events. [2023-01-27 23:11:40,812 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-01-27 23:11:40,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 170 events. 85/170 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 576 event pairs, 26 based on Foata normal form. 12/181 useless extension candidates. Maximal degree in co-relation 386. Up to 87 conditions per place. [2023-01-27 23:11:40,813 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 31 selfloop transitions, 4 changer transitions 8/43 dead transitions. [2023-01-27 23:11:40,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 43 transitions, 212 flow [2023-01-27 23:11:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:11:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:11:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 821 transitions. [2023-01-27 23:11:40,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854460093896714 [2023-01-27 23:11:40,816 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 821 transitions. [2023-01-27 23:11:40,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 821 transitions. [2023-01-27 23:11:40,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:40,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 821 transitions. [2023-01-27 23:11:40,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 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) [2023-01-27 23:11:40,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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) [2023-01-27 23:11:40,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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) [2023-01-27 23:11:40,821 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 65 flow. Second operand 5 states and 821 transitions. [2023-01-27 23:11:40,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 43 transitions, 212 flow [2023-01-27 23:11:40,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 43 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:11:40,823 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 93 flow [2023-01-27 23:11:40,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-27 23:11:40,824 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2023-01-27 23:11:40,826 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 93 flow [2023-01-27 23:11:40,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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) [2023-01-27 23:11:40,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:40,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:40,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:11:40,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:40,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash 531655878, now seen corresponding path program 2 times [2023-01-27 23:11:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:40,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017992749] [2023-01-27 23:11:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:40,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:40,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:40,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017992749] [2023-01-27 23:11:40,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017992749] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:11:40,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:11:40,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:11:40,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332455768] [2023-01-27 23:11:40,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:11:40,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:11:40,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:40,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:11:40,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:11:40,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 426 [2023-01-27 23:11:40,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 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) [2023-01-27 23:11:40,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:40,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 426 [2023-01-27 23:11:40,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:40,992 INFO L130 PetriNetUnfolder]: 85/163 cut-off events. [2023-01-27 23:11:40,992 INFO L131 PetriNetUnfolder]: For 123/135 co-relation queries the response was YES. [2023-01-27 23:11:40,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 163 events. 85/163 cut-off events. For 123/135 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 524 event pairs, 24 based on Foata normal form. 7/164 useless extension candidates. Maximal degree in co-relation 474. Up to 104 conditions per place. [2023-01-27 23:11:40,994 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 26 selfloop transitions, 4 changer transitions 4/35 dead transitions. [2023-01-27 23:11:40,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 206 flow [2023-01-27 23:11:40,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 23:11:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 23:11:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 700 transitions. [2023-01-27 23:11:40,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107981220657277 [2023-01-27 23:11:40,996 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 700 transitions. [2023-01-27 23:11:40,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 700 transitions. [2023-01-27 23:11:40,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:40,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 700 transitions. [2023-01-27 23:11:40,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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) [2023-01-27 23:11:41,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 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) [2023-01-27 23:11:41,003 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 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) [2023-01-27 23:11:41,003 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 93 flow. Second operand 4 states and 700 transitions. [2023-01-27 23:11:41,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 206 flow [2023-01-27 23:11:41,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 193 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 23:11:41,007 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 112 flow [2023-01-27 23:11:41,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-01-27 23:11:41,009 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-01-27 23:11:41,009 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 112 flow [2023-01-27 23:11:41,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 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) [2023-01-27 23:11:41,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:41,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:41,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:11:41,010 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:41,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:41,010 INFO L85 PathProgramCache]: Analyzing trace with hash 51165837, now seen corresponding path program 1 times [2023-01-27 23:11:41,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:41,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411304459] [2023-01-27 23:11:41,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:41,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411304459] [2023-01-27 23:11:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411304459] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:11:41,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:11:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:11:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020330162] [2023-01-27 23:11:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:11:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:11:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:41,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:11:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:11:41,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-01-27 23:11:41,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 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) [2023-01-27 23:11:41,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:41,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-01-27 23:11:41,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:41,153 INFO L130 PetriNetUnfolder]: 82/167 cut-off events. [2023-01-27 23:11:41,153 INFO L131 PetriNetUnfolder]: For 226/246 co-relation queries the response was YES. [2023-01-27 23:11:41,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 167 events. 82/167 cut-off events. For 226/246 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 565 event pairs, 31 based on Foata normal form. 18/180 useless extension candidates. Maximal degree in co-relation 491. Up to 114 conditions per place. [2023-01-27 23:11:41,154 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 32 selfloop transitions, 4 changer transitions 2/40 dead transitions. [2023-01-27 23:11:41,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 254 flow [2023-01-27 23:11:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 23:11:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 23:11:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 666 transitions. [2023-01-27 23:11:41,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3908450704225352 [2023-01-27 23:11:41,156 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 666 transitions. [2023-01-27 23:11:41,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 666 transitions. [2023-01-27 23:11:41,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:41,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 666 transitions. [2023-01-27 23:11:41,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 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) [2023-01-27 23:11:41,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 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) [2023-01-27 23:11:41,160 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 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) [2023-01-27 23:11:41,160 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 112 flow. Second operand 4 states and 666 transitions. [2023-01-27 23:11:41,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 254 flow [2023-01-27 23:11:41,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:11:41,164 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 139 flow [2023-01-27 23:11:41,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-01-27 23:11:41,165 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2023-01-27 23:11:41,165 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 139 flow [2023-01-27 23:11:41,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 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) [2023-01-27 23:11:41,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:41,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:41,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:11:41,166 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:41,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash 151453329, now seen corresponding path program 2 times [2023-01-27 23:11:41,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:41,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451941254] [2023-01-27 23:11:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:41,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:41,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451941254] [2023-01-27 23:11:41,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451941254] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:11:41,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467716420] [2023-01-27 23:11:41,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:11:41,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:11:41,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:11:41,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:11:41,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:11:41,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:11:41,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:11:41,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:11:41,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:11:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:41,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:11:41,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467716420] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:11:41,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:11:41,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-01-27 23:11:41,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591640374] [2023-01-27 23:11:41,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:11:41,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:11:41,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:11:41,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:11:41,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-01-27 23:11:41,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 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) [2023-01-27 23:11:41,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:41,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-01-27 23:11:41,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:41,537 INFO L130 PetriNetUnfolder]: 90/181 cut-off events. [2023-01-27 23:11:41,537 INFO L131 PetriNetUnfolder]: For 303/321 co-relation queries the response was YES. [2023-01-27 23:11:41,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 181 events. 90/181 cut-off events. For 303/321 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 602 event pairs, 27 based on Foata normal form. 20/196 useless extension candidates. Maximal degree in co-relation 643. Up to 126 conditions per place. [2023-01-27 23:11:41,539 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 30 selfloop transitions, 4 changer transitions 5/41 dead transitions. [2023-01-27 23:11:41,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 281 flow [2023-01-27 23:11:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 23:11:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 23:11:41,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 670 transitions. [2023-01-27 23:11:41,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931924882629108 [2023-01-27 23:11:41,540 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 670 transitions. [2023-01-27 23:11:41,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 670 transitions. [2023-01-27 23:11:41,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:41,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 670 transitions. [2023-01-27 23:11:41,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 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) [2023-01-27 23:11:41,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 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) [2023-01-27 23:11:41,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 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) [2023-01-27 23:11:41,544 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 139 flow. Second operand 4 states and 670 transitions. [2023-01-27 23:11:41,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 281 flow [2023-01-27 23:11:41,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 270 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 23:11:41,546 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 164 flow [2023-01-27 23:11:41,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-01-27 23:11:41,546 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-01-27 23:11:41,546 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 164 flow [2023-01-27 23:11:41,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 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) [2023-01-27 23:11:41,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:41,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:41,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 23:11:41,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-27 23:11:41,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:41,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1653193011, now seen corresponding path program 3 times [2023-01-27 23:11:41,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:41,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156418018] [2023-01-27 23:11:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:41,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:41,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:41,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156418018] [2023-01-27 23:11:41,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156418018] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:11:41,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543918037] [2023-01-27 23:11:41,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:11:41,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:11:41,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:11:41,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:11:41,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:11:41,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 23:11:41,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:11:41,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:11:41,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:11:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:42,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:11:42,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543918037] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:11:42,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:11:42,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-01-27 23:11:42,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615078105] [2023-01-27 23:11:42,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:11:42,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:11:42,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:42,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:11:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:11:42,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-01-27 23:11:42,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 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) [2023-01-27 23:11:42,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:42,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-01-27 23:11:42,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:42,092 INFO L130 PetriNetUnfolder]: 92/180 cut-off events. [2023-01-27 23:11:42,092 INFO L131 PetriNetUnfolder]: For 506/524 co-relation queries the response was YES. [2023-01-27 23:11:42,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 180 events. 92/180 cut-off events. For 506/524 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 604 event pairs, 35 based on Foata normal form. 20/194 useless extension candidates. Maximal degree in co-relation 672. Up to 126 conditions per place. [2023-01-27 23:11:42,093 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 29 selfloop transitions, 8 changer transitions 3/42 dead transitions. [2023-01-27 23:11:42,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 314 flow [2023-01-27 23:11:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 23:11:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 23:11:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 667 transitions. [2023-01-27 23:11:42,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3914319248826291 [2023-01-27 23:11:42,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 667 transitions. [2023-01-27 23:11:42,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 667 transitions. [2023-01-27 23:11:42,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:42,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 667 transitions. [2023-01-27 23:11:42,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 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) [2023-01-27 23:11:42,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 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) [2023-01-27 23:11:42,099 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 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) [2023-01-27 23:11:42,099 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 164 flow. Second operand 4 states and 667 transitions. [2023-01-27 23:11:42,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 314 flow [2023-01-27 23:11:42,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 301 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-27 23:11:42,103 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 200 flow [2023-01-27 23:11:42,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-01-27 23:11:42,104 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-01-27 23:11:42,104 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 200 flow [2023-01-27 23:11:42,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 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) [2023-01-27 23:11:42,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:42,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:42,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:11:42,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-01-27 23:11:42,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:42,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:42,311 INFO L85 PathProgramCache]: Analyzing trace with hash 414711862, now seen corresponding path program 3 times [2023-01-27 23:11:42,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:42,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771534068] [2023-01-27 23:11:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:42,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:42,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:42,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771534068] [2023-01-27 23:11:42,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771534068] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:11:42,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:11:42,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:11:42,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583335644] [2023-01-27 23:11:42,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:11:42,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:11:42,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:11:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:11:42,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-27 23:11:42,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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) [2023-01-27 23:11:42,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:42,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-27 23:11:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:42,464 INFO L130 PetriNetUnfolder]: 108/207 cut-off events. [2023-01-27 23:11:42,464 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-01-27 23:11:42,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 207 events. 108/207 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 670 event pairs, 38 based on Foata normal form. 4/210 useless extension candidates. Maximal degree in co-relation 824. Up to 147 conditions per place. [2023-01-27 23:11:42,465 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 33 selfloop transitions, 10 changer transitions 4/47 dead transitions. [2023-01-27 23:11:42,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 388 flow [2023-01-27 23:11:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:11:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:11:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2023-01-27 23:11:42,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3826291079812207 [2023-01-27 23:11:42,467 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2023-01-27 23:11:42,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2023-01-27 23:11:42,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:42,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2023-01-27 23:11:42,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 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) [2023-01-27 23:11:42,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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) [2023-01-27 23:11:42,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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) [2023-01-27 23:11:42,471 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 200 flow. Second operand 5 states and 815 transitions. [2023-01-27 23:11:42,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 388 flow [2023-01-27 23:11:42,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 364 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-27 23:11:42,472 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 255 flow [2023-01-27 23:11:42,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-01-27 23:11:42,473 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 23 predicate places. [2023-01-27 23:11:42,473 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 255 flow [2023-01-27 23:11:42,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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) [2023-01-27 23:11:42,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:42,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:42,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 23:11:42,474 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:42,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:42,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1611530206, now seen corresponding path program 4 times [2023-01-27 23:11:42,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:42,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026253048] [2023-01-27 23:11:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:42,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:11:42,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:42,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026253048] [2023-01-27 23:11:42,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026253048] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:11:42,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:11:42,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:11:42,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051203170] [2023-01-27 23:11:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:11:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:11:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:11:42,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:11:42,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-27 23:11:42,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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) [2023-01-27 23:11:42,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:42,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-27 23:11:42,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:42,636 INFO L130 PetriNetUnfolder]: 108/201 cut-off events. [2023-01-27 23:11:42,636 INFO L131 PetriNetUnfolder]: For 630/630 co-relation queries the response was YES. [2023-01-27 23:11:42,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 201 events. 108/201 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 643 event pairs, 31 based on Foata normal form. 4/204 useless extension candidates. Maximal degree in co-relation 858. Up to 138 conditions per place. [2023-01-27 23:11:42,637 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 31 selfloop transitions, 14 changer transitions 6/51 dead transitions. [2023-01-27 23:11:42,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 446 flow [2023-01-27 23:11:42,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:11:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:11:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2023-01-27 23:11:42,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38403755868544603 [2023-01-27 23:11:42,639 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2023-01-27 23:11:42,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2023-01-27 23:11:42,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:42,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2023-01-27 23:11:42,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 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) [2023-01-27 23:11:42,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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) [2023-01-27 23:11:42,643 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 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) [2023-01-27 23:11:42,643 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 255 flow. Second operand 5 states and 818 transitions. [2023-01-27 23:11:42,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 446 flow [2023-01-27 23:11:42,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 435 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 23:11:42,645 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 322 flow [2023-01-27 23:11:42,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-01-27 23:11:42,645 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 28 predicate places. [2023-01-27 23:11:42,645 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 322 flow [2023-01-27 23:11:42,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 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) [2023-01-27 23:11:42,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:42,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:42,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 23:11:42,646 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:42,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:42,646 INFO L85 PathProgramCache]: Analyzing trace with hash -541961488, now seen corresponding path program 1 times [2023-01-27 23:11:42,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:42,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996995953] [2023-01-27 23:11:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:42,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:42,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:11:42,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:42,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996995953] [2023-01-27 23:11:42,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996995953] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:11:42,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379047725] [2023-01-27 23:11:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:42,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:11:42,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:11:42,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:11:42,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:11:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:42,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-27 23:11:42,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:11:43,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:11:43,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:11:43,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:11:43,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:11:43,229 INFO L321 Elim1Store]: treesize reduction 29, result has 64.2 percent of original size [2023-01-27 23:11:43,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 84 [2023-01-27 23:11:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:11:43,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:11:43,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:11:43,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 371 treesize of output 215 [2023-01-27 23:11:43,578 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:11:43,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 700 treesize of output 708 [2023-01-27 23:11:43,663 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:11:43,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 370 treesize of output 342 [2023-01-27 23:11:43,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:11:43,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 245 [2023-01-27 23:11:51,072 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-27 23:11:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:11:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379047725] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:11:51,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:11:51,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2023-01-27 23:11:51,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063645668] [2023-01-27 23:11:51,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:11:51,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 23:11:51,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:51,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 23:11:51,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=188, Unknown=8, NotChecked=0, Total=240 [2023-01-27 23:11:51,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 426 [2023-01-27 23:11:51,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 322 flow. Second operand has 16 states, 16 states have (on average 116.6875) internal successors, (1867), 16 states have internal predecessors, (1867), 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) [2023-01-27 23:11:51,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:51,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 426 [2023-01-27 23:11:51,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:52,446 INFO L130 PetriNetUnfolder]: 243/430 cut-off events. [2023-01-27 23:11:52,446 INFO L131 PetriNetUnfolder]: For 1418/1444 co-relation queries the response was YES. [2023-01-27 23:11:52,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 430 events. 243/430 cut-off events. For 1418/1444 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1657 event pairs, 16 based on Foata normal form. 36/460 useless extension candidates. Maximal degree in co-relation 1656. Up to 209 conditions per place. [2023-01-27 23:11:52,448 INFO L137 encePairwiseOnDemand]: 418/426 looper letters, 35 selfloop transitions, 20 changer transitions 64/122 dead transitions. [2023-01-27 23:11:52,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 1087 flow [2023-01-27 23:11:52,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-27 23:11:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-27 23:11:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2380 transitions. [2023-01-27 23:11:52,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2793427230046948 [2023-01-27 23:11:52,453 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2380 transitions. [2023-01-27 23:11:52,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2380 transitions. [2023-01-27 23:11:52,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:11:52,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2380 transitions. [2023-01-27 23:11:52,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 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) [2023-01-27 23:11:52,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 426.0) internal successors, (8946), 21 states have internal predecessors, (8946), 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) [2023-01-27 23:11:52,465 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 426.0) internal successors, (8946), 21 states have internal predecessors, (8946), 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) [2023-01-27 23:11:52,465 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 322 flow. Second operand 20 states and 2380 transitions. [2023-01-27 23:11:52,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 1087 flow [2023-01-27 23:11:52,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 122 transitions, 999 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-01-27 23:11:52,469 INFO L231 Difference]: Finished difference. Result has 70 places, 40 transitions, 383 flow [2023-01-27 23:11:52,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=383, PETRI_PLACES=70, PETRI_TRANSITIONS=40} [2023-01-27 23:11:52,469 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 49 predicate places. [2023-01-27 23:11:52,469 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 40 transitions, 383 flow [2023-01-27 23:11:52,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 116.6875) internal successors, (1867), 16 states have internal predecessors, (1867), 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) [2023-01-27 23:11:52,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:11:52,470 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:11:52,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 23:11:52,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:11:52,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:11:52,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:11:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1708393027, now seen corresponding path program 2 times [2023-01-27 23:11:52,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:11:52,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501211632] [2023-01-27 23:11:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:11:52,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:11:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:11:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 23:11:53,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:11:53,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501211632] [2023-01-27 23:11:53,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501211632] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:11:53,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283476228] [2023-01-27 23:11:53,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:11:53,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:11:53,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:11:53,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:11:53,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 23:11:54,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:11:54,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:11:54,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 23:11:54,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:11:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 23:11:54,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:11:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 23:11:54,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283476228] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:11:54,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:11:54,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 15 [2023-01-27 23:11:54,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819824944] [2023-01-27 23:11:54,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:11:54,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 23:11:54,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:11:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 23:11:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-01-27 23:11:54,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-27 23:11:54,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 40 transitions, 383 flow. Second operand has 15 states, 15 states have (on average 158.33333333333334) internal successors, (2375), 15 states have internal predecessors, (2375), 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) [2023-01-27 23:11:54,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:11:54,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-27 23:11:54,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:11:59,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-27 23:12:07,782 INFO L130 PetriNetUnfolder]: 230/398 cut-off events. [2023-01-27 23:12:07,782 INFO L131 PetriNetUnfolder]: For 2010/2010 co-relation queries the response was YES. [2023-01-27 23:12:07,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 398 events. 230/398 cut-off events. For 2010/2010 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1390 event pairs, 11 based on Foata normal form. 62/460 useless extension candidates. Maximal degree in co-relation 2182. Up to 213 conditions per place. [2023-01-27 23:12:07,785 INFO L137 encePairwiseOnDemand]: 420/426 looper letters, 89 selfloop transitions, 52 changer transitions 0/141 dead transitions. [2023-01-27 23:12:07,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 141 transitions, 1397 flow [2023-01-27 23:12:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 23:12:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 23:12:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3869 transitions. [2023-01-27 23:12:07,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37842331768388104 [2023-01-27 23:12:07,795 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3869 transitions. [2023-01-27 23:12:07,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3869 transitions. [2023-01-27 23:12:07,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:12:07,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3869 transitions. [2023-01-27 23:12:07,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 161.20833333333334) internal successors, (3869), 24 states have internal predecessors, (3869), 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) [2023-01-27 23:12:07,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 426.0) internal successors, (10650), 25 states have internal predecessors, (10650), 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) [2023-01-27 23:12:07,822 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 426.0) internal successors, (10650), 25 states have internal predecessors, (10650), 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) [2023-01-27 23:12:07,822 INFO L175 Difference]: Start difference. First operand has 70 places, 40 transitions, 383 flow. Second operand 24 states and 3869 transitions. [2023-01-27 23:12:07,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 141 transitions, 1397 flow [2023-01-27 23:12:07,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 141 transitions, 1266 flow, removed 47 selfloop flow, removed 11 redundant places. [2023-01-27 23:12:07,832 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 889 flow [2023-01-27 23:12:07,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=889, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2023-01-27 23:12:07,833 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 57 predicate places. [2023-01-27 23:12:07,833 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 889 flow [2023-01-27 23:12:07,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 158.33333333333334) internal successors, (2375), 15 states have internal predecessors, (2375), 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) [2023-01-27 23:12:07,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:12:07,834 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:12:07,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-27 23:12:08,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:12:08,039 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:12:08,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:12:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1666646071, now seen corresponding path program 3 times [2023-01-27 23:12:08,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:12:08,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820897451] [2023-01-27 23:12:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:12:08,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:12:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:12:10,487 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:12:10,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:12:10,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820897451] [2023-01-27 23:12:10,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820897451] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:12:10,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279910975] [2023-01-27 23:12:10,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:12:10,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:12:10,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:12:10,490 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:12:10,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 23:12:10,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 23:12:10,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:12:10,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 66 conjunts are in the unsatisfiable core [2023-01-27 23:12:10,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:12:10,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:12:11,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:12:11,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:12:11,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:12:11,373 INFO L321 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2023-01-27 23:12:11,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 153 treesize of output 62 [2023-01-27 23:12:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:12:11,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:12:12,828 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:12:12,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 1536 treesize of output 681 [2023-01-27 23:12:13,581 INFO L321 Elim1Store]: treesize reduction 5, result has 98.8 percent of original size [2023-01-27 23:12:13,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1678 treesize of output 1809 [2023-01-27 23:12:14,959 INFO L321 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-01-27 23:12:14,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1326 treesize of output 1278 [2023-01-27 23:12:16,660 INFO L321 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-01-27 23:12:16,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 525 treesize of output 741 [2023-01-27 23:12:37,601 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:12:38,519 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 23:12:56,567 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 23:13:08,394 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-27 23:13:14,019 WARN L222 SmtUtils]: Spent 5.59s on a formula simplification that was a NOOP. DAG size: 625 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 23:13:42,281 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 23:13:46,737 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 23:13:58,124 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 23:14:09,874 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 23:14:14,410 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:14:16,372 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:14:21,078 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 23:15:11,299 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:15:12,888 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:15:14,438 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 23:15:30,055 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:15:37,253 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:15:38,650 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:15:51,422 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:16:05,824 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:16:45,509 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 23:16:57,850 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 23:17:03,073 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 23:17:15,848 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 23:17:28,630 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-27 23:17:33,551 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:17:35,473 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-27 23:18:04,519 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-27 23:18:06,472 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2023-01-27 23:25:46,006 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 23:25:46,007 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 23:25:46,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 23:25:46,025 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 23:25:46,038 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 23:25:46,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-27 23:25:46,208 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 8ms.. [2023-01-27 23:25:46,209 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 23:25:46,210 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 23:25:46,210 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1] [2023-01-27 23:25:46,212 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:25:46,212 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:25:46,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:25:46 BasicIcfg [2023-01-27 23:25:46,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:25:46,214 INFO L158 Benchmark]: Toolchain (without parser) took 851464.65ms. Allocated memory was 400.6MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 370.6MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-01-27 23:25:46,214 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:25:46,214 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.66ms. Allocated memory is still 400.6MB. Free memory was 370.2MB in the beginning and 358.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 23:25:46,214 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.71ms. Allocated memory is still 400.6MB. Free memory was 358.6MB in the beginning and 356.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:25:46,214 INFO L158 Benchmark]: Boogie Preprocessor took 21.05ms. Allocated memory is still 400.6MB. Free memory was 356.5MB in the beginning and 354.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:25:46,214 INFO L158 Benchmark]: RCFGBuilder took 416.32ms. Allocated memory is still 400.6MB. Free memory was 354.8MB in the beginning and 337.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-27 23:25:46,214 INFO L158 Benchmark]: TraceAbstraction took 850780.02ms. Allocated memory was 400.6MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 336.3MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. [2023-01-27 23:25:46,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 206.66ms. Allocated memory is still 400.6MB. Free memory was 370.2MB in the beginning and 358.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.71ms. Allocated memory is still 400.6MB. Free memory was 358.6MB in the beginning and 356.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.05ms. Allocated memory is still 400.6MB. Free memory was 356.5MB in the beginning and 354.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 416.32ms. Allocated memory is still 400.6MB. Free memory was 354.8MB in the beginning and 337.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 850780.02ms. Allocated memory was 400.6MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 336.3MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 176 PlacesBefore, 21 PlacesAfterwards, 186 TransitionsBefore, 17 TransitionsAfterwards, 3892 CoEnabledTransitionPairs, 8 FixpointIterations, 74 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 35 ConcurrentYvCompositions, 14 ChoiceCompositions, 230 TotalNumberOfCompositions, 3908 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3865, independent: 3854, independent conditional: 0, independent unconditional: 3854, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2368, independent: 2362, independent conditional: 0, independent unconditional: 2362, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3865, independent: 1492, independent conditional: 0, independent unconditional: 1492, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 2368, unknown conditional: 0, unknown unconditional: 2368] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 8ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 8ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 8ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 264 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 850.7s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 15.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 408 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 408 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1201 IncrementalHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 23 mSDtfsCounter, 1201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=889occurred in iteration=11, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 264 ConstructedInterpolants, 5 QuantifiedInterpolants, 3968 SizeOfPredicates, 26 NumberOfNonLiveVariables, 727 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 30/49 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown