/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:27:42,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:27:42,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:27:42,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:27:42,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:27:42,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:27:42,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:27:42,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:27:42,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:27:42,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:27:42,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:27:42,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:27:42,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:27:42,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:27:42,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:27:42,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:27:42,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:27:42,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:27:42,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:27:42,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:27:42,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:27:42,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:27:42,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:27:42,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:27:42,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 03:27:42,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 03:27:42,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 03:27:42,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 03:27:42,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 03:27:42,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 03:27:42,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:27:42,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:27:42,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:27:42,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:27:42,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:27:42,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:27:42,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:27:42,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:27:42,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:27:42,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:27:42,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:27:42,094 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 [2023-01-28 03:27:42,107 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:27:42,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:27:42,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:27:42,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:27:42,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:27:42,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:27:42,111 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:27:42,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:27:42,111 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:27:42,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:27:42,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:27:42,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:27:42,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:27:42,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:27:42,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:27:42,112 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:27:42,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:27:42,112 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:27:42,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:27:42,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:27:42,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:27:42,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:27:42,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:27:42,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:27:42,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:27:42,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:27:42,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:27:42,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:27:42,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:27:42,114 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:27:42,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:27:42,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:27:42,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:27:42,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:27:42,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:27:42,330 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:27:42,331 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:27:42,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2023-01-28 03:27:43,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:27:43,390 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:27:43,390 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2023-01-28 03:27:43,394 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b01b782f/fe013020ba2e48cb8005bcaa4c05b4c1/FLAGabf90dca4 [2023-01-28 03:27:43,403 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b01b782f/fe013020ba2e48cb8005bcaa4c05b4c1 [2023-01-28 03:27:43,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:27:43,405 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:27:43,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:27:43,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:27:43,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:27:43,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7919f269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43, skipping insertion in model container [2023-01-28 03:27:43,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:27:43,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:27:43,533 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/parallel-misc-1.wvr.c[2755,2768] [2023-01-28 03:27:43,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:27:43,545 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:27:43,577 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/parallel-misc-1.wvr.c[2755,2768] [2023-01-28 03:27:43,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:27:43,589 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:27:43,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43 WrapperNode [2023-01-28 03:27:43,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:27:43,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:27:43,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:27:43,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:27:43,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,620 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 287 [2023-01-28 03:27:43,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:27:43,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:27:43,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:27:43,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:27:43,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:27:43,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:27:43,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:27:43,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:27:43,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:27:43,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:27:43,664 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) [2023-01-28 03:27:43,670 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 [2023-01-28 03:27:43,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:27:43,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:27:43,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:27:43,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:27:43,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:27:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:27:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:27:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:27:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 03:27:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:27:43,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:27:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:27:43,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:27:43,694 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 03:27:43,775 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:27:43,776 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:27:44,092 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:27:44,099 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:27:44,100 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 03:27:44,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:27:44 BoogieIcfgContainer [2023-01-28 03:27:44,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:27:44,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:27:44,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:27:44,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:27:44,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:27:43" (1/3) ... [2023-01-28 03:27:44,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cd784f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:27:44, skipping insertion in model container [2023-01-28 03:27:44,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43" (2/3) ... [2023-01-28 03:27:44,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cd784f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:27:44, skipping insertion in model container [2023-01-28 03:27:44,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:27:44" (3/3) ... [2023-01-28 03:27:44,107 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2023-01-28 03:27:44,118 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:27:44,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:27:44,118 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:27:44,222 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 03:27:44,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 346 transitions, 708 flow [2023-01-28 03:27:44,383 INFO L130 PetriNetUnfolder]: 28/344 cut-off events. [2023-01-28 03:27:44,383 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:27:44,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 344 events. 28/344 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 768 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2023-01-28 03:27:44,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 346 transitions, 708 flow [2023-01-28 03:27:44,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 336 transitions, 684 flow [2023-01-28 03:27:44,403 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:27:44,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 336 transitions, 684 flow [2023-01-28 03:27:44,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 336 transitions, 684 flow [2023-01-28 03:27:44,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 336 transitions, 684 flow [2023-01-28 03:27:44,457 INFO L130 PetriNetUnfolder]: 28/336 cut-off events. [2023-01-28 03:27:44,457 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:27:44,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 336 events. 28/336 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 761 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2023-01-28 03:27:44,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 25652 [2023-01-28 03:27:52,414 INFO L134 LiptonReduction]: Checked pairs total: 22140 [2023-01-28 03:27:52,414 INFO L136 LiptonReduction]: Total number of compositions: 413 [2023-01-28 03:27:52,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:27:52,428 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;@d737a28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:27:52,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 03:27:52,431 INFO L130 PetriNetUnfolder]: 4/16 cut-off events. [2023-01-28 03:27:52,431 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 03:27:52,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:52,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:52,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:27:52,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:52,435 INFO L85 PathProgramCache]: Analyzing trace with hash 200185486, now seen corresponding path program 1 times [2023-01-28 03:27:52,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:52,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731725085] [2023-01-28 03:27:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:52,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:53,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:27:53,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:53,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731725085] [2023-01-28 03:27:53,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731725085] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:27:53,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:27:53,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:27:53,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055544659] [2023-01-28 03:27:53,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:53,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:27:53,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:27:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 03:27:53,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 759 [2023-01-28 03:27:53,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 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) [2023-01-28 03:27:53,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:53,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 759 [2023-01-28 03:27:53,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:53,144 INFO L130 PetriNetUnfolder]: 99/168 cut-off events. [2023-01-28 03:27:53,144 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-01-28 03:27:53,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 168 events. 99/168 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 490 event pairs, 15 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 294. Up to 91 conditions per place. [2023-01-28 03:27:53,146 INFO L137 encePairwiseOnDemand]: 752/759 looper letters, 32 selfloop transitions, 10 changer transitions 1/43 dead transitions. [2023-01-28 03:27:53,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 43 transitions, 199 flow [2023-01-28 03:27:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:27:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:27:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1508 transitions. [2023-01-28 03:27:53,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397364953886693 [2023-01-28 03:27:53,164 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1508 transitions. [2023-01-28 03:27:53,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1508 transitions. [2023-01-28 03:27:53,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:53,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1508 transitions. [2023-01-28 03:27:53,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.6) internal successors, (1508), 5 states have internal predecessors, (1508), 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) [2023-01-28 03:27:53,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:53,184 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:53,185 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 46 flow. Second operand 5 states and 1508 transitions. [2023-01-28 03:27:53,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 43 transitions, 199 flow [2023-01-28 03:27:53,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 03:27:53,188 INFO L231 Difference]: Finished difference. Result has 23 places, 25 transitions, 99 flow [2023-01-28 03:27:53,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=23, PETRI_TRANSITIONS=25} [2023-01-28 03:27:53,191 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-01-28 03:27:53,192 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 25 transitions, 99 flow [2023-01-28 03:27:53,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.4) internal successors, (1472), 5 states have internal predecessors, (1472), 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) [2023-01-28 03:27:53,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:53,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:53,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:27:53,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:27:53,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:53,194 INFO L85 PathProgramCache]: Analyzing trace with hash -419197718, now seen corresponding path program 1 times [2023-01-28 03:27:53,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:53,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280812413] [2023-01-28 03:27:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:53,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:27:53,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:53,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280812413] [2023-01-28 03:27:53,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280812413] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:27:53,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:27:53,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:27:53,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25897728] [2023-01-28 03:27:53,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:53,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:27:53,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:27:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:27:53,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 759 [2023-01-28 03:27:53,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 25 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 299.25) internal successors, (1197), 4 states have internal predecessors, (1197), 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) [2023-01-28 03:27:53,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:53,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 759 [2023-01-28 03:27:53,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:53,436 INFO L130 PetriNetUnfolder]: 109/196 cut-off events. [2023-01-28 03:27:53,436 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-01-28 03:27:53,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 196 events. 109/196 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 634 event pairs, 17 based on Foata normal form. 8/196 useless extension candidates. Maximal degree in co-relation 258. Up to 69 conditions per place. [2023-01-28 03:27:53,437 INFO L137 encePairwiseOnDemand]: 753/759 looper letters, 39 selfloop transitions, 13 changer transitions 2/54 dead transitions. [2023-01-28 03:27:53,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 54 transitions, 307 flow [2023-01-28 03:27:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:27:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:27:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1522 transitions. [2023-01-28 03:27:53,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010540184453228 [2023-01-28 03:27:53,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1522 transitions. [2023-01-28 03:27:53,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1522 transitions. [2023-01-28 03:27:53,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:53,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1522 transitions. [2023-01-28 03:27:53,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.4) internal successors, (1522), 5 states have internal predecessors, (1522), 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) [2023-01-28 03:27:53,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:53,449 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:53,449 INFO L175 Difference]: Start difference. First operand has 23 places, 25 transitions, 99 flow. Second operand 5 states and 1522 transitions. [2023-01-28 03:27:53,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 54 transitions, 307 flow [2023-01-28 03:27:53,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 54 transitions, 305 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 03:27:53,452 INFO L231 Difference]: Finished difference. Result has 30 places, 34 transitions, 205 flow [2023-01-28 03:27:53,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=30, PETRI_TRANSITIONS=34} [2023-01-28 03:27:53,454 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2023-01-28 03:27:53,454 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 34 transitions, 205 flow [2023-01-28 03:27:53,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 299.25) internal successors, (1197), 4 states have internal predecessors, (1197), 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) [2023-01-28 03:27:53,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:53,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:53,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:27:53,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:27:53,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1716415558, now seen corresponding path program 2 times [2023-01-28 03:27:53,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:53,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208581888] [2023-01-28 03:27:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:27:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208581888] [2023-01-28 03:27:53,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208581888] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:27:53,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:27:53,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:27:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733276277] [2023-01-28 03:27:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:53,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:27:53,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:27:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:27:53,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 759 [2023-01-28 03:27:53,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 34 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 295.25) internal successors, (1181), 4 states have internal predecessors, (1181), 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) [2023-01-28 03:27:53,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:53,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 759 [2023-01-28 03:27:53,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:53,673 INFO L130 PetriNetUnfolder]: 169/319 cut-off events. [2023-01-28 03:27:53,674 INFO L131 PetriNetUnfolder]: For 569/569 co-relation queries the response was YES. [2023-01-28 03:27:53,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 319 events. 169/319 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1234 event pairs, 67 based on Foata normal form. 16/335 useless extension candidates. Maximal degree in co-relation 612. Up to 122 conditions per place. [2023-01-28 03:27:53,675 INFO L137 encePairwiseOnDemand]: 754/759 looper letters, 55 selfloop transitions, 9 changer transitions 2/66 dead transitions. [2023-01-28 03:27:53,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 66 transitions, 514 flow [2023-01-28 03:27:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:27:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:27:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1497 transitions. [2023-01-28 03:27:53,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39446640316205533 [2023-01-28 03:27:53,680 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1497 transitions. [2023-01-28 03:27:53,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1497 transitions. [2023-01-28 03:27:53,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:53,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1497 transitions. [2023-01-28 03:27:53,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 299.4) internal successors, (1497), 5 states have internal predecessors, (1497), 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) [2023-01-28 03:27:53,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:53,688 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:53,688 INFO L175 Difference]: Start difference. First operand has 30 places, 34 transitions, 205 flow. Second operand 5 states and 1497 transitions. [2023-01-28 03:27:53,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 66 transitions, 514 flow [2023-01-28 03:27:53,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 66 transitions, 502 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-01-28 03:27:53,694 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 278 flow [2023-01-28 03:27:53,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2023-01-28 03:27:53,695 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 17 predicate places. [2023-01-28 03:27:53,697 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 278 flow [2023-01-28 03:27:53,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 295.25) internal successors, (1181), 4 states have internal predecessors, (1181), 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) [2023-01-28 03:27:53,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:53,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 03:27:53,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:27:53,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1708128844, now seen corresponding path program 1 times [2023-01-28 03:27:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:53,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089623706] [2023-01-28 03:27:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:53,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:53,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:53,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089623706] [2023-01-28 03:27:53,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089623706] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:27:53,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:27:53,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 03:27:53,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602736395] [2023-01-28 03:27:53,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:53,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:27:53,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:53,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:27:53,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:27:53,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 759 [2023-01-28 03:27:53,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 299.5) internal successors, (1198), 4 states have internal predecessors, (1198), 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) [2023-01-28 03:27:53,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:53,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 759 [2023-01-28 03:27:53,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:53,882 INFO L130 PetriNetUnfolder]: 155/293 cut-off events. [2023-01-28 03:27:53,882 INFO L131 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2023-01-28 03:27:53,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 293 events. 155/293 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1124 event pairs, 16 based on Foata normal form. 6/299 useless extension candidates. Maximal degree in co-relation 758. Up to 134 conditions per place. [2023-01-28 03:27:53,884 INFO L137 encePairwiseOnDemand]: 753/759 looper letters, 39 selfloop transitions, 20 changer transitions 6/65 dead transitions. [2023-01-28 03:27:53,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 551 flow [2023-01-28 03:27:53,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:27:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:27:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1519 transitions. [2023-01-28 03:27:53,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002635046113307 [2023-01-28 03:27:53,887 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1519 transitions. [2023-01-28 03:27:53,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1519 transitions. [2023-01-28 03:27:53,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:53,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1519 transitions. [2023-01-28 03:27:53,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.8) internal successors, (1519), 5 states have internal predecessors, (1519), 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) [2023-01-28 03:27:53,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:53,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:53,898 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 278 flow. Second operand 5 states and 1519 transitions. [2023-01-28 03:27:53,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 551 flow [2023-01-28 03:27:53,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 541 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-01-28 03:27:53,901 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 399 flow [2023-01-28 03:27:53,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-01-28 03:27:53,901 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2023-01-28 03:27:53,901 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 399 flow [2023-01-28 03:27:53,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 299.5) internal successors, (1198), 4 states have internal predecessors, (1198), 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) [2023-01-28 03:27:53,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:53,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:53,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 03:27:53,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:27:53,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:53,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1411080757, now seen corresponding path program 1 times [2023-01-28 03:27:53,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:53,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438396030] [2023-01-28 03:27:53,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:53,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:27:53,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438396030] [2023-01-28 03:27:53,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438396030] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:27:53,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:27:53,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:27:53,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634470541] [2023-01-28 03:27:53,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:53,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:27:53,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:27:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:27:53,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 759 [2023-01-28 03:27:53,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 295.5) internal successors, (1182), 4 states have internal predecessors, (1182), 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) [2023-01-28 03:27:53,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:53,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 759 [2023-01-28 03:27:53,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:54,042 INFO L130 PetriNetUnfolder]: 94/176 cut-off events. [2023-01-28 03:27:54,042 INFO L131 PetriNetUnfolder]: For 590/590 co-relation queries the response was YES. [2023-01-28 03:27:54,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 176 events. 94/176 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 536 event pairs, 34 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 765. Up to 126 conditions per place. [2023-01-28 03:27:54,043 INFO L137 encePairwiseOnDemand]: 754/759 looper letters, 40 selfloop transitions, 4 changer transitions 10/54 dead transitions. [2023-01-28 03:27:54,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 54 transitions, 510 flow [2023-01-28 03:27:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:27:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:27:54,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1493 transitions. [2023-01-28 03:27:54,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39341238471673257 [2023-01-28 03:27:54,046 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1493 transitions. [2023-01-28 03:27:54,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1493 transitions. [2023-01-28 03:27:54,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:54,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1493 transitions. [2023-01-28 03:27:54,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.6) internal successors, (1493), 5 states have internal predecessors, (1493), 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) [2023-01-28 03:27:54,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:54,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:54,054 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 399 flow. Second operand 5 states and 1493 transitions. [2023-01-28 03:27:54,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 54 transitions, 510 flow [2023-01-28 03:27:54,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 500 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-01-28 03:27:54,057 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 328 flow [2023-01-28 03:27:54,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-01-28 03:27:54,058 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2023-01-28 03:27:54,058 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 328 flow [2023-01-28 03:27:54,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 295.5) internal successors, (1182), 4 states have internal predecessors, (1182), 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) [2023-01-28 03:27:54,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:54,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 03:27:54,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:27:54,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1125366281, now seen corresponding path program 1 times [2023-01-28 03:27:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869779679] [2023-01-28 03:27:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869779679] [2023-01-28 03:27:54,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869779679] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:27:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270781567] [2023-01-28 03:27:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:54,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:27:54,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:27:54,200 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) [2023-01-28 03:27:54,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 03:27:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:54,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 03:27:54,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:27:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:54,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:27:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:54,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270781567] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 03:27:54,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 03:27:54,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2023-01-28 03:27:54,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333176579] [2023-01-28 03:27:54,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:54,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 03:27:54,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:54,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 03:27:54,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-28 03:27:54,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 759 [2023-01-28 03:27:54,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 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) [2023-01-28 03:27:54,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:54,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 759 [2023-01-28 03:27:54,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:54,576 INFO L130 PetriNetUnfolder]: 100/169 cut-off events. [2023-01-28 03:27:54,576 INFO L131 PetriNetUnfolder]: For 617/617 co-relation queries the response was YES. [2023-01-28 03:27:54,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 169 events. 100/169 cut-off events. For 617/617 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 440 event pairs, 18 based on Foata normal form. 16/185 useless extension candidates. Maximal degree in co-relation 767. Up to 111 conditions per place. [2023-01-28 03:27:54,577 INFO L137 encePairwiseOnDemand]: 754/759 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-01-28 03:27:54,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 458 flow [2023-01-28 03:27:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 03:27:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 03:27:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1485 transitions. [2023-01-28 03:27:54,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2023-01-28 03:27:54,580 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1485 transitions. [2023-01-28 03:27:54,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1485 transitions. [2023-01-28 03:27:54,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:54,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1485 transitions. [2023-01-28 03:27:54,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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) [2023-01-28 03:27:54,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:54,587 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 759.0) internal successors, (4554), 6 states have internal predecessors, (4554), 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) [2023-01-28 03:27:54,587 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 328 flow. Second operand 5 states and 1485 transitions. [2023-01-28 03:27:54,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 458 flow [2023-01-28 03:27:54,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 410 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-01-28 03:27:54,590 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 303 flow [2023-01-28 03:27:54,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-01-28 03:27:54,592 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 25 predicate places. [2023-01-28 03:27:54,592 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 303 flow [2023-01-28 03:27:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 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) [2023-01-28 03:27:54,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:54,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:54,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 03:27:54,801 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 [2023-01-28 03:27:54,801 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:27:54,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -4780107, now seen corresponding path program 1 times [2023-01-28 03:27:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:54,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154150634] [2023-01-28 03:27:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:27:56,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:56,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154150634] [2023-01-28 03:27:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154150634] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:27:56,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917459569] [2023-01-28 03:27:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:56,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:27:56,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:27:56,470 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) [2023-01-28 03:27:56,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 03:27:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:56,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-28 03:27:56,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:27:56,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 107 [2023-01-28 03:27:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:56,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:27:57,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:27:57,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 253 treesize of output 221 [2023-01-28 03:27:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:57,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917459569] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:27:57,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:27:57,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 19 [2023-01-28 03:27:57,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987343228] [2023-01-28 03:27:57,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:27:57,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 03:27:57,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:57,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 03:27:57,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-01-28 03:27:57,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 759 [2023-01-28 03:27:57,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 303 flow. Second operand has 20 states, 20 states have (on average 245.25) internal successors, (4905), 20 states have internal predecessors, (4905), 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) [2023-01-28 03:27:57,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:57,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 759 [2023-01-28 03:27:57,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:58,893 INFO L130 PetriNetUnfolder]: 272/472 cut-off events. [2023-01-28 03:27:58,893 INFO L131 PetriNetUnfolder]: For 1192/1192 co-relation queries the response was YES. [2023-01-28 03:27:58,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 472 events. 272/472 cut-off events. For 1192/1192 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1811 event pairs, 6 based on Foata normal form. 3/475 useless extension candidates. Maximal degree in co-relation 1728. Up to 181 conditions per place. [2023-01-28 03:27:58,896 INFO L137 encePairwiseOnDemand]: 749/759 looper letters, 104 selfloop transitions, 55 changer transitions 7/166 dead transitions. [2023-01-28 03:27:58,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 166 transitions, 1411 flow [2023-01-28 03:27:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 03:27:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 03:27:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4743 transitions. [2023-01-28 03:27:58,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3288953609319742 [2023-01-28 03:27:58,906 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4743 transitions. [2023-01-28 03:27:58,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4743 transitions. [2023-01-28 03:27:58,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:58,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4743 transitions. [2023-01-28 03:27:58,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 249.6315789473684) internal successors, (4743), 19 states have internal predecessors, (4743), 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) [2023-01-28 03:27:58,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 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) [2023-01-28 03:27:58,938 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 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) [2023-01-28 03:27:58,938 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 303 flow. Second operand 19 states and 4743 transitions. [2023-01-28 03:27:58,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 166 transitions, 1411 flow [2023-01-28 03:27:58,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 166 transitions, 1408 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 03:27:58,947 INFO L231 Difference]: Finished difference. Result has 71 places, 87 transitions, 943 flow [2023-01-28 03:27:58,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=943, PETRI_PLACES=71, PETRI_TRANSITIONS=87} [2023-01-28 03:27:58,947 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 51 predicate places. [2023-01-28 03:27:58,948 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 87 transitions, 943 flow [2023-01-28 03:27:58,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 245.25) internal successors, (4905), 20 states have internal predecessors, (4905), 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) [2023-01-28 03:27:58,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:58,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:58,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 03:27:59,153 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 [2023-01-28 03:27:59,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:27:59,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1877271009, now seen corresponding path program 2 times [2023-01-28 03:27:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:59,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264863315] [2023-01-28 03:27:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:00,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:00,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264863315] [2023-01-28 03:28:00,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264863315] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:00,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435942914] [2023-01-28 03:28:00,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:28:00,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:00,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:00,304 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) [2023-01-28 03:28:00,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 03:28:00,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:28:00,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:00,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 53 conjunts are in the unsatisfiable core [2023-01-28 03:28:00,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:00,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 101 [2023-01-28 03:28:00,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:00,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:01,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:28:01,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 253 treesize of output 221 [2023-01-28 03:28:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435942914] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:01,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2023-01-28 03:28:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228279006] [2023-01-28 03:28:01,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:01,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 03:28:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 03:28:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-01-28 03:28:01,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 759 [2023-01-28 03:28:01,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 87 transitions, 943 flow. Second operand has 21 states, 21 states have (on average 252.04761904761904) internal successors, (5293), 21 states have internal predecessors, (5293), 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) [2023-01-28 03:28:01,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:01,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 759 [2023-01-28 03:28:01,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:03,922 INFO L130 PetriNetUnfolder]: 647/1126 cut-off events. [2023-01-28 03:28:03,922 INFO L131 PetriNetUnfolder]: For 7759/7759 co-relation queries the response was YES. [2023-01-28 03:28:03,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6907 conditions, 1126 events. 647/1126 cut-off events. For 7759/7759 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5655 event pairs, 14 based on Foata normal form. 24/1150 useless extension candidates. Maximal degree in co-relation 5613. Up to 387 conditions per place. [2023-01-28 03:28:03,929 INFO L137 encePairwiseOnDemand]: 749/759 looper letters, 172 selfloop transitions, 212 changer transitions 17/401 dead transitions. [2023-01-28 03:28:03,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 401 transitions, 4549 flow [2023-01-28 03:28:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-01-28 03:28:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-01-28 03:28:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 11788 transitions. [2023-01-28 03:28:03,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3376296041702469 [2023-01-28 03:28:03,951 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 11788 transitions. [2023-01-28 03:28:03,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 11788 transitions. [2023-01-28 03:28:03,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:03,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 11788 transitions. [2023-01-28 03:28:03,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 256.2608695652174) internal successors, (11788), 46 states have internal predecessors, (11788), 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) [2023-01-28 03:28:03,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 759.0) internal successors, (35673), 47 states have internal predecessors, (35673), 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) [2023-01-28 03:28:04,000 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 759.0) internal successors, (35673), 47 states have internal predecessors, (35673), 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) [2023-01-28 03:28:04,000 INFO L175 Difference]: Start difference. First operand has 71 places, 87 transitions, 943 flow. Second operand 46 states and 11788 transitions. [2023-01-28 03:28:04,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 401 transitions, 4549 flow [2023-01-28 03:28:04,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 401 transitions, 4260 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-01-28 03:28:04,027 INFO L231 Difference]: Finished difference. Result has 125 places, 253 transitions, 3493 flow [2023-01-28 03:28:04,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3493, PETRI_PLACES=125, PETRI_TRANSITIONS=253} [2023-01-28 03:28:04,029 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 105 predicate places. [2023-01-28 03:28:04,029 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 253 transitions, 3493 flow [2023-01-28 03:28:04,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 252.04761904761904) internal successors, (5293), 21 states have internal predecessors, (5293), 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) [2023-01-28 03:28:04,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:04,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:04,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:04,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:04,237 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:04,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:04,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1904976639, now seen corresponding path program 3 times [2023-01-28 03:28:04,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:04,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460560463] [2023-01-28 03:28:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:04,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460560463] [2023-01-28 03:28:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460560463] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877893095] [2023-01-28 03:28:05,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:28:05,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:05,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:05,344 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) [2023-01-28 03:28:05,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 03:28:05,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:28:05,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:05,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 03:28:05,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:05,452 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 [2023-01-28 03:28:05,525 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 [2023-01-28 03:28:05,562 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 [2023-01-28 03:28:05,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 107 [2023-01-28 03:28:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:05,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877893095] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:06,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-01-28 03:28:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005258167] [2023-01-28 03:28:06,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:06,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 03:28:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:06,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 03:28:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=328, Unknown=2, NotChecked=0, Total=420 [2023-01-28 03:28:06,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 759 [2023-01-28 03:28:06,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 253 transitions, 3493 flow. Second operand has 21 states, 21 states have (on average 245.0) internal successors, (5145), 21 states have internal predecessors, (5145), 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) [2023-01-28 03:28:06,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:06,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 759 [2023-01-28 03:28:06,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:15,128 WARN L222 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 84 DAG size of output: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:28:16,721 INFO L130 PetriNetUnfolder]: 713/1249 cut-off events. [2023-01-28 03:28:16,721 INFO L131 PetriNetUnfolder]: For 11887/11887 co-relation queries the response was YES. [2023-01-28 03:28:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8707 conditions, 1249 events. 713/1249 cut-off events. For 11887/11887 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6482 event pairs, 34 based on Foata normal form. 3/1252 useless extension candidates. Maximal degree in co-relation 7940. Up to 526 conditions per place. [2023-01-28 03:28:16,731 INFO L137 encePairwiseOnDemand]: 750/759 looper letters, 199 selfloop transitions, 158 changer transitions 10/367 dead transitions. [2023-01-28 03:28:16,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 367 transitions, 5322 flow [2023-01-28 03:28:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-28 03:28:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-28 03:28:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6231 transitions. [2023-01-28 03:28:16,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3283794466403162 [2023-01-28 03:28:16,737 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6231 transitions. [2023-01-28 03:28:16,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6231 transitions. [2023-01-28 03:28:16,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:16,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6231 transitions. [2023-01-28 03:28:16,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 249.24) internal successors, (6231), 25 states have internal predecessors, (6231), 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) [2023-01-28 03:28:16,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 759.0) internal successors, (19734), 26 states have internal predecessors, (19734), 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) [2023-01-28 03:28:16,756 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 759.0) internal successors, (19734), 26 states have internal predecessors, (19734), 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) [2023-01-28 03:28:16,756 INFO L175 Difference]: Start difference. First operand has 125 places, 253 transitions, 3493 flow. Second operand 25 states and 6231 transitions. [2023-01-28 03:28:16,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 367 transitions, 5322 flow [2023-01-28 03:28:16,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 367 transitions, 4260 flow, removed 496 selfloop flow, removed 9 redundant places. [2023-01-28 03:28:16,839 INFO L231 Difference]: Finished difference. Result has 151 places, 290 transitions, 3554 flow [2023-01-28 03:28:16,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3554, PETRI_PLACES=151, PETRI_TRANSITIONS=290} [2023-01-28 03:28:16,840 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 131 predicate places. [2023-01-28 03:28:16,840 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 290 transitions, 3554 flow [2023-01-28 03:28:16,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 245.0) internal successors, (5145), 21 states have internal predecessors, (5145), 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) [2023-01-28 03:28:16,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:16,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:16,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:17,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:17,046 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:17,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:17,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1874892425, now seen corresponding path program 4 times [2023-01-28 03:28:17,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:17,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954701241] [2023-01-28 03:28:17,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:17,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:18,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954701241] [2023-01-28 03:28:18,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954701241] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422581472] [2023-01-28 03:28:18,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:28:18,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:18,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:18,978 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) [2023-01-28 03:28:18,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 03:28:19,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:28:19,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:19,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 03:28:19,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:19,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 103 [2023-01-28 03:28:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:19,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:20,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:28:20,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 349 treesize of output 261 [2023-01-28 03:28:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:20,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422581472] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:20,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:20,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-01-28 03:28:20,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735506269] [2023-01-28 03:28:20,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:20,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 03:28:20,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 03:28:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-01-28 03:28:20,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 759 [2023-01-28 03:28:20,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 290 transitions, 3554 flow. Second operand has 22 states, 22 states have (on average 244.95454545454547) internal successors, (5389), 22 states have internal predecessors, (5389), 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) [2023-01-28 03:28:20,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:20,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 759 [2023-01-28 03:28:20,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:23,463 INFO L130 PetriNetUnfolder]: 799/1438 cut-off events. [2023-01-28 03:28:23,463 INFO L131 PetriNetUnfolder]: For 9008/9008 co-relation queries the response was YES. [2023-01-28 03:28:23,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8860 conditions, 1438 events. 799/1438 cut-off events. For 9008/9008 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7882 event pairs, 14 based on Foata normal form. 11/1449 useless extension candidates. Maximal degree in co-relation 8745. Up to 414 conditions per place. [2023-01-28 03:28:23,475 INFO L137 encePairwiseOnDemand]: 749/759 looper letters, 153 selfloop transitions, 292 changer transitions 21/466 dead transitions. [2023-01-28 03:28:23,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 466 transitions, 5847 flow [2023-01-28 03:28:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-28 03:28:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-28 03:28:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 9196 transitions. [2023-01-28 03:28:23,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32745789267528397 [2023-01-28 03:28:23,482 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 9196 transitions. [2023-01-28 03:28:23,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 9196 transitions. [2023-01-28 03:28:23,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:23,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 9196 transitions. [2023-01-28 03:28:23,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 248.54054054054055) internal successors, (9196), 37 states have internal predecessors, (9196), 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) [2023-01-28 03:28:23,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 759.0) internal successors, (28842), 38 states have internal predecessors, (28842), 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) [2023-01-28 03:28:23,506 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 759.0) internal successors, (28842), 38 states have internal predecessors, (28842), 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) [2023-01-28 03:28:23,506 INFO L175 Difference]: Start difference. First operand has 151 places, 290 transitions, 3554 flow. Second operand 37 states and 9196 transitions. [2023-01-28 03:28:23,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 466 transitions, 5847 flow [2023-01-28 03:28:23,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 466 transitions, 5634 flow, removed 81 selfloop flow, removed 9 redundant places. [2023-01-28 03:28:23,587 INFO L231 Difference]: Finished difference. Result has 187 places, 371 transitions, 5451 flow [2023-01-28 03:28:23,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=3349, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5451, PETRI_PLACES=187, PETRI_TRANSITIONS=371} [2023-01-28 03:28:23,588 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 167 predicate places. [2023-01-28 03:28:23,588 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 371 transitions, 5451 flow [2023-01-28 03:28:23,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 244.95454545454547) internal successors, (5389), 22 states have internal predecessors, (5389), 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) [2023-01-28 03:28:23,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:23,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:23,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:23,794 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,SelfDestructingSolverStorable9 [2023-01-28 03:28:23,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:23,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1562389633, now seen corresponding path program 5 times [2023-01-28 03:28:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:23,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304917132] [2023-01-28 03:28:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:23,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:24,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:24,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304917132] [2023-01-28 03:28:24,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304917132] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:24,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575406396] [2023-01-28 03:28:24,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:28:24,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:24,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:24,364 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:24,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 03:28:24,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:28:24,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:24,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 03:28:24,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:24,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 103 [2023-01-28 03:28:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:24,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:25,471 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:28:25,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 349 treesize of output 261 [2023-01-28 03:28:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:26,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575406396] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:26,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:26,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-01-28 03:28:26,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145464111] [2023-01-28 03:28:26,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:26,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 03:28:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:26,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 03:28:26,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-01-28 03:28:26,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 759 [2023-01-28 03:28:26,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 371 transitions, 5451 flow. Second operand has 22 states, 22 states have (on average 252.0) internal successors, (5544), 22 states have internal predecessors, (5544), 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) [2023-01-28 03:28:26,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:26,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 759 [2023-01-28 03:28:26,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:27,530 INFO L130 PetriNetUnfolder]: 788/1403 cut-off events. [2023-01-28 03:28:27,531 INFO L131 PetriNetUnfolder]: For 11309/11309 co-relation queries the response was YES. [2023-01-28 03:28:27,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10021 conditions, 1403 events. 788/1403 cut-off events. For 11309/11309 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7559 event pairs, 15 based on Foata normal form. 9/1412 useless extension candidates. Maximal degree in co-relation 9951. Up to 400 conditions per place. [2023-01-28 03:28:27,543 INFO L137 encePairwiseOnDemand]: 749/759 looper letters, 139 selfloop transitions, 301 changer transitions 13/453 dead transitions. [2023-01-28 03:28:27,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 453 transitions, 6676 flow [2023-01-28 03:28:27,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-01-28 03:28:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-01-28 03:28:27,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7930 transitions. [2023-01-28 03:28:27,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33703089804071573 [2023-01-28 03:28:27,550 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7930 transitions. [2023-01-28 03:28:27,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7930 transitions. [2023-01-28 03:28:27,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:27,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7930 transitions. [2023-01-28 03:28:27,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 255.80645161290323) internal successors, (7930), 31 states have internal predecessors, (7930), 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) [2023-01-28 03:28:27,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 759.0) internal successors, (24288), 32 states have internal predecessors, (24288), 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) [2023-01-28 03:28:27,572 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 759.0) internal successors, (24288), 32 states have internal predecessors, (24288), 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) [2023-01-28 03:28:27,572 INFO L175 Difference]: Start difference. First operand has 187 places, 371 transitions, 5451 flow. Second operand 31 states and 7930 transitions. [2023-01-28 03:28:27,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 453 transitions, 6676 flow [2023-01-28 03:28:27,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 453 transitions, 6325 flow, removed 114 selfloop flow, removed 16 redundant places. [2023-01-28 03:28:27,641 INFO L231 Difference]: Finished difference. Result has 200 places, 375 transitions, 5830 flow [2023-01-28 03:28:27,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=4837, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=5830, PETRI_PLACES=200, PETRI_TRANSITIONS=375} [2023-01-28 03:28:27,642 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 180 predicate places. [2023-01-28 03:28:27,642 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 375 transitions, 5830 flow [2023-01-28 03:28:27,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 252.0) internal successors, (5544), 22 states have internal predecessors, (5544), 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) [2023-01-28 03:28:27,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:27,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:27,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:27,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:27,851 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:27,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:27,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1534684003, now seen corresponding path program 6 times [2023-01-28 03:28:27,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:27,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894252889] [2023-01-28 03:28:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:27,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:28,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:28,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894252889] [2023-01-28 03:28:28,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894252889] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:28,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153017945] [2023-01-28 03:28:28,379 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:28:28,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:28,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:28,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:28,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 03:28:28,462 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 03:28:28,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:28,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 03:28:28,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:28,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 103 [2023-01-28 03:28:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:28,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:29,364 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:28:29,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 339 treesize of output 251 [2023-01-28 03:28:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153017945] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:29,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:29,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2023-01-28 03:28:29,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623222478] [2023-01-28 03:28:29,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:29,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 03:28:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:29,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 03:28:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-01-28 03:28:29,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 759 [2023-01-28 03:28:29,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 375 transitions, 5830 flow. Second operand has 18 states, 18 states have (on average 252.33333333333334) internal successors, (4542), 18 states have internal predecessors, (4542), 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) [2023-01-28 03:28:29,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:29,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 759 [2023-01-28 03:28:29,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:30,381 INFO L130 PetriNetUnfolder]: 790/1396 cut-off events. [2023-01-28 03:28:30,381 INFO L131 PetriNetUnfolder]: For 9236/9236 co-relation queries the response was YES. [2023-01-28 03:28:30,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10342 conditions, 1396 events. 790/1396 cut-off events. For 9236/9236 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7397 event pairs, 41 based on Foata normal form. 2/1398 useless extension candidates. Maximal degree in co-relation 10229. Up to 680 conditions per place. [2023-01-28 03:28:30,392 INFO L137 encePairwiseOnDemand]: 751/759 looper letters, 251 selfloop transitions, 164 changer transitions 10/425 dead transitions. [2023-01-28 03:28:30,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 425 transitions, 6887 flow [2023-01-28 03:28:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 03:28:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 03:28:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5372 transitions. [2023-01-28 03:28:30,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3370349457305979 [2023-01-28 03:28:30,396 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5372 transitions. [2023-01-28 03:28:30,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5372 transitions. [2023-01-28 03:28:30,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:30,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5372 transitions. [2023-01-28 03:28:30,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 255.8095238095238) internal successors, (5372), 21 states have internal predecessors, (5372), 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) [2023-01-28 03:28:30,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 759.0) internal successors, (16698), 22 states have internal predecessors, (16698), 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) [2023-01-28 03:28:30,408 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 759.0) internal successors, (16698), 22 states have internal predecessors, (16698), 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) [2023-01-28 03:28:30,408 INFO L175 Difference]: Start difference. First operand has 200 places, 375 transitions, 5830 flow. Second operand 21 states and 5372 transitions. [2023-01-28 03:28:30,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 425 transitions, 6887 flow [2023-01-28 03:28:30,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 425 transitions, 6639 flow, removed 36 selfloop flow, removed 20 redundant places. [2023-01-28 03:28:30,479 INFO L231 Difference]: Finished difference. Result has 200 places, 375 transitions, 5939 flow [2023-01-28 03:28:30,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=5601, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5939, PETRI_PLACES=200, PETRI_TRANSITIONS=375} [2023-01-28 03:28:30,480 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 180 predicate places. [2023-01-28 03:28:30,480 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 375 transitions, 5939 flow [2023-01-28 03:28:30,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 252.33333333333334) internal successors, (4542), 18 states have internal predecessors, (4542), 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) [2023-01-28 03:28:30,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:30,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:30,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 03:28:30,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:30,686 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:30,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:30,686 INFO L85 PathProgramCache]: Analyzing trace with hash 761414257, now seen corresponding path program 7 times [2023-01-28 03:28:30,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:30,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033595891] [2023-01-28 03:28:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:31,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:31,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033595891] [2023-01-28 03:28:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033595891] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:31,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970367427] [2023-01-28 03:28:31,347 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:28:31,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:31,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:31,349 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:31,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 03:28:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:31,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 49 conjunts are in the unsatisfiable core [2023-01-28 03:28:31,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:31,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:28:31,616 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 [2023-01-28 03:28:31,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 107 [2023-01-28 03:28:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:31,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:32,100 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~bag1~0 c_~sum1~0)) (.cse2 (+ c_~A~0.offset (* c_~j~0 4)))) (and (forall ((v_ArrVal_312 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_312) c_~A~0.base) .cse2))) (or (< 2147483647 (+ c_~bag2~0 .cse0)) (< (+ c_~bag2~0 .cse0 2147483648) 0) (<= (+ c_~bag2~0 .cse0 c_~sum2~0) .cse1)))) (forall ((v_ArrVal_312 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_312) c_~A~0.base) .cse2))) (or (< 2147483647 (+ c_~bag2~0 .cse3)) (<= .cse1 (+ c_~bag2~0 .cse3 c_~sum2~0)) (< (+ c_~bag2~0 .cse3 2147483648) 0)))))) is different from false [2023-01-28 03:28:32,292 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:28:32,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 427 treesize of output 371 [2023-01-28 03:28:32,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 151 [2023-01-28 03:28:32,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 133 [2023-01-28 03:28:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:32,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970367427] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:32,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:32,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2023-01-28 03:28:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145387180] [2023-01-28 03:28:32,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:32,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 03:28:32,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 03:28:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=344, Unknown=1, NotChecked=38, Total=462 [2023-01-28 03:28:32,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 759 [2023-01-28 03:28:32,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 375 transitions, 5939 flow. Second operand has 22 states, 22 states have (on average 247.9090909090909) internal successors, (5454), 22 states have internal predecessors, (5454), 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) [2023-01-28 03:28:32,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:32,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 759 [2023-01-28 03:28:32,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:33,317 INFO L130 PetriNetUnfolder]: 796/1410 cut-off events. [2023-01-28 03:28:33,317 INFO L131 PetriNetUnfolder]: For 9902/9902 co-relation queries the response was YES. [2023-01-28 03:28:33,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 1410 events. 796/1410 cut-off events. For 9902/9902 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7533 event pairs, 54 based on Foata normal form. 2/1412 useless extension candidates. Maximal degree in co-relation 10473. Up to 917 conditions per place. [2023-01-28 03:28:33,327 INFO L137 encePairwiseOnDemand]: 751/759 looper letters, 330 selfloop transitions, 75 changer transitions 8/413 dead transitions. [2023-01-28 03:28:33,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 413 transitions, 6957 flow [2023-01-28 03:28:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 03:28:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 03:28:33,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3786 transitions. [2023-01-28 03:28:33,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3325428194993412 [2023-01-28 03:28:33,330 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3786 transitions. [2023-01-28 03:28:33,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3786 transitions. [2023-01-28 03:28:33,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:33,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3786 transitions. [2023-01-28 03:28:33,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 252.4) internal successors, (3786), 15 states have internal predecessors, (3786), 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) [2023-01-28 03:28:33,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 759.0) internal successors, (12144), 16 states have internal predecessors, (12144), 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) [2023-01-28 03:28:33,339 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 759.0) internal successors, (12144), 16 states have internal predecessors, (12144), 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) [2023-01-28 03:28:33,339 INFO L175 Difference]: Start difference. First operand has 200 places, 375 transitions, 5939 flow. Second operand 15 states and 3786 transitions. [2023-01-28 03:28:33,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 413 transitions, 6957 flow [2023-01-28 03:28:33,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 413 transitions, 6747 flow, removed 14 selfloop flow, removed 16 redundant places. [2023-01-28 03:28:33,401 INFO L231 Difference]: Finished difference. Result has 200 places, 377 transitions, 5948 flow [2023-01-28 03:28:33,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=5735, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5948, PETRI_PLACES=200, PETRI_TRANSITIONS=377} [2023-01-28 03:28:33,401 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 180 predicate places. [2023-01-28 03:28:33,401 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 377 transitions, 5948 flow [2023-01-28 03:28:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 247.9090909090909) internal successors, (5454), 22 states have internal predecessors, (5454), 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) [2023-01-28 03:28:33,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:33,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:33,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 03:28:33,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 03:28:33,603 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:33,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1100080267, now seen corresponding path program 8 times [2023-01-28 03:28:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:33,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647302356] [2023-01-28 03:28:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:34,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:34,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647302356] [2023-01-28 03:28:34,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647302356] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:34,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135737557] [2023-01-28 03:28:34,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:28:34,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:34,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:34,589 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:34,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 03:28:34,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:28:34,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:34,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 03:28:34,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:34,719 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 [2023-01-28 03:28:34,760 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 [2023-01-28 03:28:34,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:28:34,922 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 [2023-01-28 03:28:35,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 101 [2023-01-28 03:28:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:35,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:36,123 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:28:36,123 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 97 treesize of output 61 [2023-01-28 03:28:36,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 204 [2023-01-28 03:28:36,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 122 [2023-01-28 03:28:36,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 57 [2023-01-28 03:28:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:36,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135737557] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:36,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:36,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2023-01-28 03:28:36,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318704655] [2023-01-28 03:28:36,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:36,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 03:28:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 03:28:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=501, Unknown=2, NotChecked=0, Total=600 [2023-01-28 03:28:36,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 759 [2023-01-28 03:28:36,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 377 transitions, 5948 flow. Second operand has 25 states, 25 states have (on average 244.72) internal successors, (6118), 25 states have internal predecessors, (6118), 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) [2023-01-28 03:28:36,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:36,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 759 [2023-01-28 03:28:36,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:37,571 INFO L130 PetriNetUnfolder]: 862/1536 cut-off events. [2023-01-28 03:28:37,571 INFO L131 PetriNetUnfolder]: For 10826/10826 co-relation queries the response was YES. [2023-01-28 03:28:37,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11375 conditions, 1536 events. 862/1536 cut-off events. For 10826/10826 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8463 event pairs, 34 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 11233. Up to 865 conditions per place. [2023-01-28 03:28:37,582 INFO L137 encePairwiseOnDemand]: 751/759 looper letters, 242 selfloop transitions, 208 changer transitions 5/455 dead transitions. [2023-01-28 03:28:37,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 455 transitions, 7598 flow [2023-01-28 03:28:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 03:28:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 03:28:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4720 transitions. [2023-01-28 03:28:37,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32730046460023576 [2023-01-28 03:28:37,586 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4720 transitions. [2023-01-28 03:28:37,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4720 transitions. [2023-01-28 03:28:37,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:37,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4720 transitions. [2023-01-28 03:28:37,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 248.42105263157896) internal successors, (4720), 19 states have internal predecessors, (4720), 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) [2023-01-28 03:28:37,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 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) [2023-01-28 03:28:37,618 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 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) [2023-01-28 03:28:37,618 INFO L175 Difference]: Start difference. First operand has 200 places, 377 transitions, 5948 flow. Second operand 19 states and 4720 transitions. [2023-01-28 03:28:37,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 455 transitions, 7598 flow [2023-01-28 03:28:37,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 455 transitions, 7478 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-01-28 03:28:37,682 INFO L231 Difference]: Finished difference. Result has 208 places, 406 transitions, 6780 flow [2023-01-28 03:28:37,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=5832, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6780, PETRI_PLACES=208, PETRI_TRANSITIONS=406} [2023-01-28 03:28:37,683 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 188 predicate places. [2023-01-28 03:28:37,683 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 406 transitions, 6780 flow [2023-01-28 03:28:37,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 244.72) internal successors, (6118), 25 states have internal predecessors, (6118), 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) [2023-01-28 03:28:37,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:37,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:37,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:37,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 03:28:37,884 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:37,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:37,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2101266629, now seen corresponding path program 9 times [2023-01-28 03:28:37,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:37,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684755392] [2023-01-28 03:28:37,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:37,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:37,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:37,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:37,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684755392] [2023-01-28 03:28:37,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684755392] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:37,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584522670] [2023-01-28 03:28:37,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:28:37,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:37,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:37,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:38,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 03:28:38,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:28:38,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:38,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 03:28:38,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:38,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:38,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 201 [2023-01-28 03:28:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:38,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584522670] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:38,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:38,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-01-28 03:28:38,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098206318] [2023-01-28 03:28:38,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:38,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 03:28:38,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 03:28:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-01-28 03:28:38,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 759 [2023-01-28 03:28:38,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 406 transitions, 6780 flow. Second operand has 16 states, 16 states have (on average 274.9375) internal successors, (4399), 16 states have internal predecessors, (4399), 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) [2023-01-28 03:28:38,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:38,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 759 [2023-01-28 03:28:38,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:39,193 INFO L130 PetriNetUnfolder]: 808/1431 cut-off events. [2023-01-28 03:28:39,193 INFO L131 PetriNetUnfolder]: For 12169/12169 co-relation queries the response was YES. [2023-01-28 03:28:39,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10979 conditions, 1431 events. 808/1431 cut-off events. For 12169/12169 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7604 event pairs, 82 based on Foata normal form. 61/1492 useless extension candidates. Maximal degree in co-relation 10925. Up to 474 conditions per place. [2023-01-28 03:28:39,203 INFO L137 encePairwiseOnDemand]: 751/759 looper letters, 205 selfloop transitions, 222 changer transitions 0/427 dead transitions. [2023-01-28 03:28:39,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 427 transitions, 7280 flow [2023-01-28 03:28:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 03:28:39,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 03:28:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5271 transitions. [2023-01-28 03:28:39,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365508633243187 [2023-01-28 03:28:39,222 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5271 transitions. [2023-01-28 03:28:39,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5271 transitions. [2023-01-28 03:28:39,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:39,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5271 transitions. [2023-01-28 03:28:39,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 277.42105263157896) internal successors, (5271), 19 states have internal predecessors, (5271), 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) [2023-01-28 03:28:39,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 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) [2023-01-28 03:28:39,242 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 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) [2023-01-28 03:28:39,242 INFO L175 Difference]: Start difference. First operand has 208 places, 406 transitions, 6780 flow. Second operand 19 states and 5271 transitions. [2023-01-28 03:28:39,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 427 transitions, 7280 flow [2023-01-28 03:28:39,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 427 transitions, 6957 flow, removed 23 selfloop flow, removed 22 redundant places. [2023-01-28 03:28:39,310 INFO L231 Difference]: Finished difference. Result has 202 places, 380 transitions, 6523 flow [2023-01-28 03:28:39,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=5717, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6523, PETRI_PLACES=202, PETRI_TRANSITIONS=380} [2023-01-28 03:28:39,310 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 182 predicate places. [2023-01-28 03:28:39,311 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 380 transitions, 6523 flow [2023-01-28 03:28:39,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 274.9375) internal successors, (4399), 16 states have internal predecessors, (4399), 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) [2023-01-28 03:28:39,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:39,311 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:39,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:39,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 03:28:39,513 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:39,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:39,513 INFO L85 PathProgramCache]: Analyzing trace with hash 962779119, now seen corresponding path program 10 times [2023-01-28 03:28:39,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:39,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794711209] [2023-01-28 03:28:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794711209] [2023-01-28 03:28:39,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794711209] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401876273] [2023-01-28 03:28:39,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:28:39,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:39,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:39,618 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:39,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 03:28:39,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:28:39,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:39,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 03:28:39,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:39,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:40,148 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 03:28:40,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 353 treesize of output 249 [2023-01-28 03:28:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:40,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401876273] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:40,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:40,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-01-28 03:28:40,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761849582] [2023-01-28 03:28:40,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:40,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 03:28:40,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 03:28:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-01-28 03:28:40,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 759 [2023-01-28 03:28:40,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 380 transitions, 6523 flow. Second operand has 13 states, 13 states have (on average 266.7692307692308) internal successors, (3468), 13 states have internal predecessors, (3468), 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) [2023-01-28 03:28:40,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:40,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 759 [2023-01-28 03:28:40,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:40,610 INFO L130 PetriNetUnfolder]: 588/1107 cut-off events. [2023-01-28 03:28:40,610 INFO L131 PetriNetUnfolder]: For 9578/9578 co-relation queries the response was YES. [2023-01-28 03:28:40,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8954 conditions, 1107 events. 588/1107 cut-off events. For 9578/9578 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5929 event pairs, 106 based on Foata normal form. 96/1203 useless extension candidates. Maximal degree in co-relation 8900. Up to 296 conditions per place. [2023-01-28 03:28:40,617 INFO L137 encePairwiseOnDemand]: 754/759 looper letters, 221 selfloop transitions, 77 changer transitions 29/327 dead transitions. [2023-01-28 03:28:40,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 327 transitions, 6156 flow [2023-01-28 03:28:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 03:28:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 03:28:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2163 transitions. [2023-01-28 03:28:40,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35622529644268774 [2023-01-28 03:28:40,622 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2163 transitions. [2023-01-28 03:28:40,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2163 transitions. [2023-01-28 03:28:40,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:40,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2163 transitions. [2023-01-28 03:28:40,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 270.375) internal successors, (2163), 8 states have internal predecessors, (2163), 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) [2023-01-28 03:28:40,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 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) [2023-01-28 03:28:40,628 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 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) [2023-01-28 03:28:40,628 INFO L175 Difference]: Start difference. First operand has 202 places, 380 transitions, 6523 flow. Second operand 8 states and 2163 transitions. [2023-01-28 03:28:40,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 327 transitions, 6156 flow [2023-01-28 03:28:40,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 327 transitions, 5841 flow, removed 50 selfloop flow, removed 12 redundant places. [2023-01-28 03:28:40,689 INFO L231 Difference]: Finished difference. Result has 193 places, 282 transitions, 4919 flow [2023-01-28 03:28:40,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=5106, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4919, PETRI_PLACES=193, PETRI_TRANSITIONS=282} [2023-01-28 03:28:40,690 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 173 predicate places. [2023-01-28 03:28:40,690 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 282 transitions, 4919 flow [2023-01-28 03:28:40,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 266.7692307692308) internal successors, (3468), 13 states have internal predecessors, (3468), 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) [2023-01-28 03:28:40,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:40,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:40,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:40,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 03:28:40,896 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:40,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1145652988, now seen corresponding path program 11 times [2023-01-28 03:28:40,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:40,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051519100] [2023-01-28 03:28:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:40,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:40,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051519100] [2023-01-28 03:28:40,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051519100] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:40,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852912956] [2023-01-28 03:28:40,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 03:28:40,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:40,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:40,998 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:41,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 03:28:41,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 03:28:41,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:41,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 03:28:41,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:41,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:41,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 193 [2023-01-28 03:28:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852912956] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:41,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:41,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 03:28:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010332995] [2023-01-28 03:28:41,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:41,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 03:28:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 03:28:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-01-28 03:28:41,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 759 [2023-01-28 03:28:41,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 282 transitions, 4919 flow. Second operand has 12 states, 12 states have (on average 281.5) internal successors, (3378), 12 states have internal predecessors, (3378), 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) [2023-01-28 03:28:41,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:41,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 759 [2023-01-28 03:28:41,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:41,585 INFO L130 PetriNetUnfolder]: 221/415 cut-off events. [2023-01-28 03:28:41,585 INFO L131 PetriNetUnfolder]: For 2709/2709 co-relation queries the response was YES. [2023-01-28 03:28:41,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 415 events. 221/415 cut-off events. For 2709/2709 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1545 event pairs, 64 based on Foata normal form. 15/430 useless extension candidates. Maximal degree in co-relation 2866. Up to 295 conditions per place. [2023-01-28 03:28:41,588 INFO L137 encePairwiseOnDemand]: 753/759 looper letters, 107 selfloop transitions, 11 changer transitions 14/132 dead transitions. [2023-01-28 03:28:41,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 132 transitions, 1978 flow [2023-01-28 03:28:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:28:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:28:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1989 transitions. [2023-01-28 03:28:41,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3743647656691135 [2023-01-28 03:28:41,602 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1989 transitions. [2023-01-28 03:28:41,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1989 transitions. [2023-01-28 03:28:41,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:41,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1989 transitions. [2023-01-28 03:28:41,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.14285714285717) internal successors, (1989), 7 states have internal predecessors, (1989), 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) [2023-01-28 03:28:41,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 759.0) internal successors, (6072), 8 states have internal predecessors, (6072), 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) [2023-01-28 03:28:41,610 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 759.0) internal successors, (6072), 8 states have internal predecessors, (6072), 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) [2023-01-28 03:28:41,610 INFO L175 Difference]: Start difference. First operand has 193 places, 282 transitions, 4919 flow. Second operand 7 states and 1989 transitions. [2023-01-28 03:28:41,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 132 transitions, 1978 flow [2023-01-28 03:28:41,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 132 transitions, 1822 flow, removed 2 selfloop flow, removed 24 redundant places. [2023-01-28 03:28:41,622 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 1439 flow [2023-01-28 03:28:41,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1439, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2023-01-28 03:28:41,623 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 108 predicate places. [2023-01-28 03:28:41,623 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 1439 flow [2023-01-28 03:28:41,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 281.5) internal successors, (3378), 12 states have internal predecessors, (3378), 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) [2023-01-28 03:28:41,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:41,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:41,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:41,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 03:28:41,828 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:28:41,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:41,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1590715580, now seen corresponding path program 12 times [2023-01-28 03:28:41,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:41,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028789853] [2023-01-28 03:28:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:41,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:55,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028789853] [2023-01-28 03:28:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028789853] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:55,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561909361] [2023-01-28 03:28:55,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 03:28:55,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:55,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:55,113 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:28:55,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 03:28:55,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 03:28:55,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:55,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 89 conjunts are in the unsatisfiable core [2023-01-28 03:28:55,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:55,265 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 [2023-01-28 03:28:55,319 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 [2023-01-28 03:28:55,370 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 [2023-01-28 03:28:56,133 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:28:56,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 154 [2023-01-28 03:28:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:28:56,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:29:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:29:03,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561909361] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:29:03,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:29:03,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 35 [2023-01-28 03:29:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480732314] [2023-01-28 03:29:03,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:29:03,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-01-28 03:29:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:29:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-01-28 03:29:03,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1098, Unknown=2, NotChecked=0, Total=1260 [2023-01-28 03:29:03,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 759 [2023-01-28 03:29:03,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 1439 flow. Second operand has 36 states, 36 states have (on average 232.58333333333334) internal successors, (8373), 36 states have internal predecessors, (8373), 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) [2023-01-28 03:29:03,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:29:03,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 759 [2023-01-28 03:29:03,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:29:14,594 WARN L222 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 223 DAG size of output: 175 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:29:28,632 WARN L222 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 236 DAG size of output: 188 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:29:44,587 WARN L222 SmtUtils]: Spent 15.46s on a formula simplification. DAG size of input: 214 DAG size of output: 179 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:29:53,856 INFO L130 PetriNetUnfolder]: 536/937 cut-off events. [2023-01-28 03:29:53,856 INFO L131 PetriNetUnfolder]: For 5210/5210 co-relation queries the response was YES. [2023-01-28 03:29:53,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6390 conditions, 937 events. 536/937 cut-off events. For 5210/5210 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4372 event pairs, 11 based on Foata normal form. 1/938 useless extension candidates. Maximal degree in co-relation 6346. Up to 355 conditions per place. [2023-01-28 03:29:53,861 INFO L137 encePairwiseOnDemand]: 749/759 looper letters, 173 selfloop transitions, 203 changer transitions 4/380 dead transitions. [2023-01-28 03:29:53,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 380 transitions, 4736 flow [2023-01-28 03:29:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-28 03:29:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-28 03:29:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 11090 transitions. [2023-01-28 03:29:53,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31087937655930253 [2023-01-28 03:29:53,870 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 11090 transitions. [2023-01-28 03:29:53,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 11090 transitions. [2023-01-28 03:29:53,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:29:53,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 11090 transitions. [2023-01-28 03:29:53,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 235.95744680851064) internal successors, (11090), 47 states have internal predecessors, (11090), 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) [2023-01-28 03:29:53,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 759.0) internal successors, (36432), 48 states have internal predecessors, (36432), 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) [2023-01-28 03:29:53,895 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 759.0) internal successors, (36432), 48 states have internal predecessors, (36432), 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) [2023-01-28 03:29:53,895 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 1439 flow. Second operand 47 states and 11090 transitions. [2023-01-28 03:29:53,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 380 transitions, 4736 flow [2023-01-28 03:29:53,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 380 transitions, 4698 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-01-28 03:29:53,925 INFO L231 Difference]: Finished difference. Result has 159 places, 261 transitions, 3993 flow [2023-01-28 03:29:53,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3993, PETRI_PLACES=159, PETRI_TRANSITIONS=261} [2023-01-28 03:29:53,926 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 139 predicate places. [2023-01-28 03:29:53,926 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 261 transitions, 3993 flow [2023-01-28 03:29:53,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 232.58333333333334) internal successors, (8373), 36 states have internal predecessors, (8373), 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) [2023-01-28 03:29:53,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:29:53,927 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:29:53,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 03:29:54,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 03:29:54,132 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:29:54,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:29:54,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1379553724, now seen corresponding path program 13 times [2023-01-28 03:29:54,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:29:54,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926578449] [2023-01-28 03:29:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:29:54,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:29:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:29:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:29:56,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:29:56,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926578449] [2023-01-28 03:29:56,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926578449] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:29:56,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619132085] [2023-01-28 03:29:56,945 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 03:29:56,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:29:56,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:29:56,946 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:29:56,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 03:29:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:29:57,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 81 conjunts are in the unsatisfiable core [2023-01-28 03:29:57,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:29:57,946 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:29:57,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 295 treesize of output 191 [2023-01-28 03:29:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:29:58,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:30:03,032 INFO L321 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-01-28 03:30:03,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 469 treesize of output 201 [2023-01-28 03:30:03,890 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-01-28 03:30:03,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 940 treesize of output 1 [2023-01-28 03:30:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:30:04,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619132085] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:30:04,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:30:04,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 33 [2023-01-28 03:30:04,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221726502] [2023-01-28 03:30:04,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:30:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 03:30:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:30:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 03:30:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2023-01-28 03:30:04,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 759 [2023-01-28 03:30:04,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 261 transitions, 3993 flow. Second operand has 34 states, 34 states have (on average 232.6764705882353) internal successors, (7911), 34 states have internal predecessors, (7911), 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) [2023-01-28 03:30:04,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:30:04,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 759 [2023-01-28 03:30:04,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:30:30,590 INFO L130 PetriNetUnfolder]: 1506/2544 cut-off events. [2023-01-28 03:30:30,590 INFO L131 PetriNetUnfolder]: For 18019/18019 co-relation queries the response was YES. [2023-01-28 03:30:30,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19760 conditions, 2544 events. 1506/2544 cut-off events. For 18019/18019 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14177 event pairs, 18 based on Foata normal form. 10/2554 useless extension candidates. Maximal degree in co-relation 19710. Up to 827 conditions per place. [2023-01-28 03:30:30,605 INFO L137 encePairwiseOnDemand]: 749/759 looper letters, 280 selfloop transitions, 634 changer transitions 24/938 dead transitions. [2023-01-28 03:30:30,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 938 transitions, 14079 flow [2023-01-28 03:30:30,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-01-28 03:30:30,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2023-01-28 03:30:30,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 23167 transitions. [2023-01-28 03:30:30,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31145976177032075 [2023-01-28 03:30:30,620 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 23167 transitions. [2023-01-28 03:30:30,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 23167 transitions. [2023-01-28 03:30:30,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:30:30,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 23167 transitions. [2023-01-28 03:30:30,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 236.39795918367346) internal successors, (23167), 98 states have internal predecessors, (23167), 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) [2023-01-28 03:30:30,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 759.0) internal successors, (75141), 99 states have internal predecessors, (75141), 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) [2023-01-28 03:30:30,689 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 759.0) internal successors, (75141), 99 states have internal predecessors, (75141), 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) [2023-01-28 03:30:30,689 INFO L175 Difference]: Start difference. First operand has 159 places, 261 transitions, 3993 flow. Second operand 98 states and 23167 transitions. [2023-01-28 03:30:30,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 938 transitions, 14079 flow [2023-01-28 03:30:30,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 938 transitions, 13278 flow, removed 233 selfloop flow, removed 12 redundant places. [2023-01-28 03:30:30,851 INFO L231 Difference]: Finished difference. Result has 258 places, 702 transitions, 12130 flow [2023-01-28 03:30:30,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=12130, PETRI_PLACES=258, PETRI_TRANSITIONS=702} [2023-01-28 03:30:30,852 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 238 predicate places. [2023-01-28 03:30:30,852 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 702 transitions, 12130 flow [2023-01-28 03:30:30,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 232.6764705882353) internal successors, (7911), 34 states have internal predecessors, (7911), 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) [2023-01-28 03:30:30,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:30:30,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:30:30,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-01-28 03:30:31,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:30:31,053 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:30:31,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:30:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1053050234, now seen corresponding path program 14 times [2023-01-28 03:30:31,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:30:31,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966975608] [2023-01-28 03:30:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:30:31,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:30:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:32:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:32:03,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:32:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966975608] [2023-01-28 03:32:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966975608] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:32:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153796309] [2023-01-28 03:32:03,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 03:32:03,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:32:03,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:32:03,406 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:32:03,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 03:32:03,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 03:32:03,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:32:03,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 81 conjunts are in the unsatisfiable core [2023-01-28 03:32:03,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:32:04,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:32:04,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 154 [2023-01-28 03:32:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:32:04,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:32:09,443 INFO L321 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-01-28 03:32:09,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 469 treesize of output 201 [2023-01-28 03:32:10,606 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-01-28 03:32:10,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 940 treesize of output 1 [2023-01-28 03:32:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:32:11,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153796309] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:32:11,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:32:11,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 34 [2023-01-28 03:32:11,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666451451] [2023-01-28 03:32:11,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:32:11,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-28 03:32:11,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:32:11,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-28 03:32:11,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2023-01-28 03:32:11,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 759 [2023-01-28 03:32:11,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 702 transitions, 12130 flow. Second operand has 35 states, 35 states have (on average 232.62857142857143) internal successors, (8142), 35 states have internal predecessors, (8142), 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) [2023-01-28 03:32:11,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:32:11,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 759 [2023-01-28 03:32:11,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:32:39,649 INFO L130 PetriNetUnfolder]: 1761/3059 cut-off events. [2023-01-28 03:32:39,649 INFO L131 PetriNetUnfolder]: For 25066/25066 co-relation queries the response was YES. [2023-01-28 03:32:39,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24936 conditions, 3059 events. 1761/3059 cut-off events. For 25066/25066 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18126 event pairs, 24 based on Foata normal form. 84/3143 useless extension candidates. Maximal degree in co-relation 24873. Up to 949 conditions per place. [2023-01-28 03:32:39,668 INFO L137 encePairwiseOnDemand]: 749/759 looper letters, 298 selfloop transitions, 739 changer transitions 36/1073 dead transitions. [2023-01-28 03:32:39,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1073 transitions, 18264 flow [2023-01-28 03:32:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-01-28 03:32:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-01-28 03:32:39,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 21499 transitions. [2023-01-28 03:32:39,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3112684417032243 [2023-01-28 03:32:39,681 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 21499 transitions. [2023-01-28 03:32:39,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 21499 transitions. [2023-01-28 03:32:39,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:32:39,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 21499 transitions. [2023-01-28 03:32:39,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 236.25274725274724) internal successors, (21499), 91 states have internal predecessors, (21499), 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) [2023-01-28 03:32:39,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 759.0) internal successors, (69828), 92 states have internal predecessors, (69828), 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) [2023-01-28 03:32:39,738 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 759.0) internal successors, (69828), 92 states have internal predecessors, (69828), 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) [2023-01-28 03:32:39,739 INFO L175 Difference]: Start difference. First operand has 258 places, 702 transitions, 12130 flow. Second operand 91 states and 21499 transitions. [2023-01-28 03:32:39,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1073 transitions, 18264 flow [2023-01-28 03:32:40,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1073 transitions, 16236 flow, removed 770 selfloop flow, removed 24 redundant places. [2023-01-28 03:32:40,048 INFO L231 Difference]: Finished difference. Result has 330 places, 853 transitions, 15347 flow [2023-01-28 03:32:40,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=9109, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=509, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=15347, PETRI_PLACES=330, PETRI_TRANSITIONS=853} [2023-01-28 03:32:40,048 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 310 predicate places. [2023-01-28 03:32:40,048 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 853 transitions, 15347 flow [2023-01-28 03:32:40,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 232.62857142857143) internal successors, (8142), 35 states have internal predecessors, (8142), 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) [2023-01-28 03:32:40,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:32:40,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:32:40,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 03:32:40,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:32:40,255 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:32:40,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:32:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1040887714, now seen corresponding path program 15 times [2023-01-28 03:32:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:32:40,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828909825] [2023-01-28 03:32:40,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:32:40,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:32:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:32:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:32:42,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:32:42,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828909825] [2023-01-28 03:32:42,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828909825] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:32:42,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198973393] [2023-01-28 03:32:42,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:32:42,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:32:42,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:32:42,088 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:32:42,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 03:32:42,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 03:32:42,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:32:42,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 97 conjunts are in the unsatisfiable core [2023-01-28 03:32:42,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:32:42,300 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 [2023-01-28 03:32:42,378 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 [2023-01-28 03:32:42,444 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 [2023-01-28 03:32:43,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:32:43,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 295 treesize of output 191 [2023-01-28 03:32:43,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:32:43,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:32:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:32:54,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198973393] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:32:54,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:32:54,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 35 [2023-01-28 03:32:54,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418743082] [2023-01-28 03:32:54,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:32:54,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-01-28 03:32:54,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:32:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-01-28 03:32:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1030, Unknown=4, NotChecked=0, Total=1260 [2023-01-28 03:32:54,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 759 [2023-01-28 03:32:54,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 853 transitions, 15347 flow. Second operand has 36 states, 36 states have (on average 232.52777777777777) internal successors, (8371), 36 states have internal predecessors, (8371), 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) [2023-01-28 03:32:54,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:32:54,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 759 [2023-01-28 03:32:54,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:34:15,289 INFO L130 PetriNetUnfolder]: 2006/3504 cut-off events. [2023-01-28 03:34:15,289 INFO L131 PetriNetUnfolder]: For 26273/26273 co-relation queries the response was YES. [2023-01-28 03:34:15,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29396 conditions, 3504 events. 2006/3504 cut-off events. For 26273/26273 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 20400 event pairs, 25 based on Foata normal form. 10/3514 useless extension candidates. Maximal degree in co-relation 29327. Up to 1091 conditions per place. [2023-01-28 03:34:15,313 INFO L137 encePairwiseOnDemand]: 748/759 looper letters, 253 selfloop transitions, 924 changer transitions 26/1203 dead transitions. [2023-01-28 03:34:15,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 1203 transitions, 22074 flow [2023-01-28 03:34:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-01-28 03:34:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-01-28 03:34:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 20028 transitions. [2023-01-28 03:34:15,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31043943269007207 [2023-01-28 03:34:15,326 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 20028 transitions. [2023-01-28 03:34:15,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 20028 transitions. [2023-01-28 03:34:15,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:34:15,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 20028 transitions. [2023-01-28 03:34:15,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 235.6235294117647) internal successors, (20028), 85 states have internal predecessors, (20028), 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) [2023-01-28 03:34:15,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 759.0) internal successors, (65274), 86 states have internal predecessors, (65274), 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) [2023-01-28 03:34:15,376 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 759.0) internal successors, (65274), 86 states have internal predecessors, (65274), 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) [2023-01-28 03:34:15,377 INFO L175 Difference]: Start difference. First operand has 330 places, 853 transitions, 15347 flow. Second operand 85 states and 20028 transitions. [2023-01-28 03:34:15,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 1203 transitions, 22074 flow [2023-01-28 03:34:15,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1203 transitions, 20766 flow, removed 424 selfloop flow, removed 33 redundant places. [2023-01-28 03:34:15,888 INFO L231 Difference]: Finished difference. Result has 393 places, 1039 transitions, 20412 flow [2023-01-28 03:34:15,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=13815, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=815, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=706, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=20412, PETRI_PLACES=393, PETRI_TRANSITIONS=1039} [2023-01-28 03:34:15,889 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 373 predicate places. [2023-01-28 03:34:15,889 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 1039 transitions, 20412 flow [2023-01-28 03:34:15,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 232.52777777777777) internal successors, (8371), 36 states have internal predecessors, (8371), 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) [2023-01-28 03:34:15,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:34:15,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:34:15,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 03:34:16,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:34:16,090 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 03:34:16,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:34:16,091 INFO L85 PathProgramCache]: Analyzing trace with hash 220455428, now seen corresponding path program 16 times [2023-01-28 03:34:16,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:34:16,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679388636] [2023-01-28 03:34:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:34:16,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:34:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:34:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 03:34:17,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:34:17,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679388636] [2023-01-28 03:34:17,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679388636] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:34:17,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650547365] [2023-01-28 03:34:17,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:34:17,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:34:17,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:34:17,604 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 03:34:17,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 03:34:17,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:34:17,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:34:17,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 97 conjunts are in the unsatisfiable core [2023-01-28 03:34:17,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:34:17,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-01-28 03:34:17,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-01-28 03:34:17,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 03:34:17,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-01-28 03:34:17,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-01-28 03:34:18,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:34:18,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 350 treesize of output 202 [2023-01-28 03:34:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:34:18,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:34:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:34:35,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650547365] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:34:35,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:34:35,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 32 [2023-01-28 03:34:35,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157522526] [2023-01-28 03:34:35,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:34:35,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-01-28 03:34:35,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:34:35,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-01-28 03:34:35,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=871, Unknown=3, NotChecked=0, Total=1056 [2023-01-28 03:34:35,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 759 [2023-01-28 03:34:35,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 1039 transitions, 20412 flow. Second operand has 33 states, 33 states have (on average 232.6060606060606) internal successors, (7676), 33 states have internal predecessors, (7676), 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) [2023-01-28 03:34:35,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:34:35,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 759 [2023-01-28 03:34:35,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:34:44,419 WARN L222 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 323 DAG size of output: 301 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:34:50,072 WARN L222 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 295 DAG size of output: 280 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:35:05,444 WARN L222 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 309 DAG size of output: 298 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:35:20,890 WARN L222 SmtUtils]: Spent 9.56s on a formula simplification. DAG size of input: 300 DAG size of output: 297 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:35:35,837 WARN L222 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 306 DAG size of output: 284 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 03:35:39,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-01-28 03:35:39,231 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-01-28 03:35:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 03:35:39,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 03:35:39,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:35:39,433 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:376) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.NestedWordAutomataUtils.getSuccessorState(NestedWordAutomataUtils.java:483) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getOrConstructTransition(DifferencePetriNet.java:279) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getTransitions(DifferencePetriNet.java:261) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.addFullyInstantiatedCandidate(PossibleExtensions.java:168) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:195) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.update(PossibleExtensions.java:135) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.computeUnfoldingHelper(PetriNetUnfolder.java:209) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.computeUnfolding(PetriNetUnfolder.java:168) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.(PetriNetUnfolder.java:129) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:76) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:64) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePairwiseOnDemand.(DifferencePairwiseOnDemand.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.enhanceAnddeterminizeInterpolantAutomaton(CegarLoopForPetriNet.java:481) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.refineAbstraction(CegarLoopForPetriNet.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 61 more [2023-01-28 03:35:39,436 INFO L158 Benchmark]: Toolchain (without parser) took 476031.12ms. Allocated memory was 388.0MB in the beginning and 1.2GB in the end (delta: 780.1MB). Free memory was 356.7MB in the beginning and 662.1MB in the end (delta: -305.4MB). Peak memory consumption was 476.1MB. Max. memory is 16.0GB. [2023-01-28 03:35:39,436 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:35:39,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.44ms. Allocated memory is still 388.0MB. Free memory was 356.7MB in the beginning and 344.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 03:35:39,437 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.76ms. Allocated memory is still 388.0MB. Free memory was 344.7MB in the beginning and 342.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 03:35:39,437 INFO L158 Benchmark]: Boogie Preprocessor took 21.15ms. Allocated memory is still 388.0MB. Free memory was 342.1MB in the beginning and 340.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:35:39,437 INFO L158 Benchmark]: RCFGBuilder took 458.95ms. Allocated memory is still 388.0MB. Free memory was 340.3MB in the beginning and 315.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 03:35:39,437 INFO L158 Benchmark]: TraceAbstraction took 475333.02ms. Allocated memory was 388.0MB in the beginning and 1.2GB in the end (delta: 780.1MB). Free memory was 314.4MB in the beginning and 662.1MB in the end (delta: -347.7MB). Peak memory consumption was 434.2MB. Max. memory is 16.0GB. [2023-01-28 03:35:39,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 183.44ms. Allocated memory is still 388.0MB. Free memory was 356.7MB in the beginning and 344.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.76ms. Allocated memory is still 388.0MB. Free memory was 344.7MB in the beginning and 342.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.15ms. Allocated memory is still 388.0MB. Free memory was 342.1MB in the beginning and 340.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 458.95ms. Allocated memory is still 388.0MB. Free memory was 340.3MB in the beginning and 315.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 475333.02ms. Allocated memory was 388.0MB in the beginning and 1.2GB in the end (delta: 780.1MB). Free memory was 314.4MB in the beginning and 662.1MB in the end (delta: -347.7MB). Peak memory consumption was 434.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.0s, 315 PlacesBefore, 20 PlacesAfterwards, 336 TransitionsBefore, 17 TransitionsAfterwards, 25652 CoEnabledTransitionPairs, 8 FixpointIterations, 100 TrivialSequentialCompositions, 198 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 75 ConcurrentYvCompositions, 24 ChoiceCompositions, 413 TotalNumberOfCompositions, 22140 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21832, independent: 21808, independent conditional: 0, independent unconditional: 21808, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15314, independent: 15300, independent conditional: 0, independent unconditional: 15300, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21832, independent: 6508, independent conditional: 0, independent unconditional: 6508, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 15314, unknown conditional: 0, unknown unconditional: 15314] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...