/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_ok_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:14:08,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:14:08,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:14:08,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:14:08,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:14:08,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:14:08,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:14:08,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:14:08,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:14:08,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:14:08,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:14:08,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:14:08,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:14:08,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:14:08,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:14:08,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:14:08,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:14:08,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:14:08,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:14:08,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:14:08,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:14:08,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:14:08,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:14:08,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:14:08,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 06:14:08,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 06:14:08,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 06:14:08,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 06:14:08,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 06:14:08,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 06:14:08,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 06:14:08,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 06:14:08,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 06:14:08,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 06:14:08,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 06:14:08,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 06:14:08,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 06:14:08,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 06:14:08,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:14:08,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:14:08,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:14:08,467 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 06:14:08,480 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:14:08,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:14:08,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:14:08,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:14:08,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:14:08,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:14:08,486 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:14:08,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:14:08,486 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:14:08,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:14:08,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:14:08,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:14:08,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:14:08,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:14:08,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:14:08,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:14:08,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:14:08,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:14:08,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:14:08,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:14:08,489 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:14:08,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:14:08,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:14:08,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:14:08,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:14:08,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:14:08,676 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:14:08,676 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:14:08,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-01-28 06:14:09,679 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:14:09,942 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:14:09,943 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-01-28 06:14:09,952 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecabf03e/77c609278a8b4a33a328d06d2a69e201/FLAGc9498f4ff [2023-01-28 06:14:09,964 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecabf03e/77c609278a8b4a33a328d06d2a69e201 [2023-01-28 06:14:09,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:14:09,967 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:14:09,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:14:09,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:14:09,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:14:09,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:14:09" (1/1) ... [2023-01-28 06:14:09,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4b419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:09, skipping insertion in model container [2023-01-28 06:14:09,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:14:09" (1/1) ... [2023-01-28 06:14:09,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:14:10,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:14:10,455 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2023-01-28 06:14:10,461 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2023-01-28 06:14:10,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:14:10,478 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:14:10,524 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43280,43293] [2023-01-28 06:14:10,528 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i[43553,43566] [2023-01-28 06:14:10,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:14:10,586 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:14:10,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10 WrapperNode [2023-01-28 06:14:10,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:14:10,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:14:10,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:14:10,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:14:10,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,647 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2023-01-28 06:14:10,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:14:10,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:14:10,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:14:10,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:14:10,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,680 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:14:10,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:14:10,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:14:10,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:14:10,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (1/1) ... [2023-01-28 06:14:10,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:14:10,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:14:10,718 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 06:14:10,724 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 06:14:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-28 06:14:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-28 06:14:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-28 06:14:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-28 06:14:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:14:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:14:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 06:14:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:14:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 06:14:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:14:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:14:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:14:10,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:14:10,750 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 06:14:10,854 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:14:10,855 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:14:11,074 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:14:11,080 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:14:11,081 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 06:14:11,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:14:11 BoogieIcfgContainer [2023-01-28 06:14:11,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:14:11,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:14:11,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:14:11,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:14:11,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:14:09" (1/3) ... [2023-01-28 06:14:11,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f207e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:14:11, skipping insertion in model container [2023-01-28 06:14:11,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:14:10" (2/3) ... [2023-01-28 06:14:11,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f207e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:14:11, skipping insertion in model container [2023-01-28 06:14:11,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:14:11" (3/3) ... [2023-01-28 06:14:11,087 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2023-01-28 06:14:11,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:14:11,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 06:14:11,099 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:14:11,168 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 06:14:11,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 216 transitions, 448 flow [2023-01-28 06:14:11,261 INFO L130 PetriNetUnfolder]: 13/214 cut-off events. [2023-01-28 06:14:11,261 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:14:11,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 13/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 359 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-01-28 06:14:11,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 216 transitions, 448 flow [2023-01-28 06:14:11,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 205 transitions, 419 flow [2023-01-28 06:14:11,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:14:11,279 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 205 transitions, 419 flow [2023-01-28 06:14:11,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 205 transitions, 419 flow [2023-01-28 06:14:11,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 419 flow [2023-01-28 06:14:11,305 INFO L130 PetriNetUnfolder]: 13/205 cut-off events. [2023-01-28 06:14:11,305 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 06:14:11,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 13/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 293 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-01-28 06:14:11,310 INFO L119 LiptonReduction]: Number of co-enabled transitions 9984 [2023-01-28 06:14:17,264 INFO L134 LiptonReduction]: Checked pairs total: 19772 [2023-01-28 06:14:17,264 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-01-28 06:14:17,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:14:17,278 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;@517bddfc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:14:17,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 06:14:17,279 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-28 06:14:17,279 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:14:17,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:17,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-28 06:14:17,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:17,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash 839, now seen corresponding path program 1 times [2023-01-28 06:14:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:17,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231170329] [2023-01-28 06:14:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:17,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:17,380 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 06:14:17,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:17,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231170329] [2023-01-28 06:14:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231170329] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:14:17,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:14:17,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-28 06:14:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292679731] [2023-01-28 06:14:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:14:17,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 06:14:17,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:17,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 06:14:17,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 06:14:17,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 402 [2023-01-28 06:14:17,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 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 06:14:17,412 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:17,412 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 402 [2023-01-28 06:14:17,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:17,561 INFO L130 PetriNetUnfolder]: 829/1341 cut-off events. [2023-01-28 06:14:17,561 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-01-28 06:14:17,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 1341 events. 829/1341 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5736 event pairs, 621 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 2519. Up to 1297 conditions per place. [2023-01-28 06:14:17,570 INFO L137 encePairwiseOnDemand]: 401/402 looper letters, 38 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-01-28 06:14:17,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 179 flow [2023-01-28 06:14:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 06:14:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 06:14:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-01-28 06:14:17,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597014925373134 [2023-01-28 06:14:17,586 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-01-28 06:14:17,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-01-28 06:14:17,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:17,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-01-28 06:14:17,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 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 06:14:17,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 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 06:14:17,599 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 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 06:14:17,600 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 103 flow. Second operand 2 states and 450 transitions. [2023-01-28 06:14:17,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 179 flow [2023-01-28 06:14:17,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 06:14:17,604 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 94 flow [2023-01-28 06:14:17,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-01-28 06:14:17,608 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-01-28 06:14:17,608 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 94 flow [2023-01-28 06:14:17,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 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 06:14:17,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:17,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:17,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:14:17,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:17,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1319934340, now seen corresponding path program 1 times [2023-01-28 06:14:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:17,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573137717] [2023-01-28 06:14:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:17,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:17,809 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 06:14:17,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:17,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573137717] [2023-01-28 06:14:17,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573137717] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:14:17,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:14:17,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:14:17,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055724728] [2023-01-28 06:14:17,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:14:17,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:14:17,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:14:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:14:17,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 402 [2023-01-28 06:14:17,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 06:14:17,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:17,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 402 [2023-01-28 06:14:17,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:17,887 INFO L130 PetriNetUnfolder]: 248/490 cut-off events. [2023-01-28 06:14:17,887 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 06:14:17,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 490 events. 248/490 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2048 event pairs, 164 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 980. Up to 253 conditions per place. [2023-01-28 06:14:17,889 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 40 selfloop transitions, 2 changer transitions 8/53 dead transitions. [2023-01-28 06:14:17,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 209 flow [2023-01-28 06:14:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:14:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:14:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-01-28 06:14:17,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-01-28 06:14:17,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-01-28 06:14:17,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-01-28 06:14:17,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:17,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-01-28 06:14:17,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:14:17,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 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 06:14:17,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 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 06:14:17,896 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-01-28 06:14:17,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 209 flow [2023-01-28 06:14:17,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 06:14:17,897 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 94 flow [2023-01-28 06:14:17,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-01-28 06:14:17,898 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-01-28 06:14:17,899 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 94 flow [2023-01-28 06:14:17,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 06:14:17,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:17,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:17,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:14:17,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:17,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash -312369892, now seen corresponding path program 1 times [2023-01-28 06:14:17,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:17,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889058067] [2023-01-28 06:14:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:17,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:17,994 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 06:14:17,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:17,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889058067] [2023-01-28 06:14:17,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889058067] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:14:17,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:14:17,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:14:17,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140852182] [2023-01-28 06:14:17,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:14:17,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:14:17,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:17,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:14:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:14:17,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:14:17,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 06:14:17,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:17,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:14:17,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:18,081 INFO L130 PetriNetUnfolder]: 245/490 cut-off events. [2023-01-28 06:14:18,081 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-28 06:14:18,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 490 events. 245/490 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1755 event pairs, 155 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1020. Up to 357 conditions per place. [2023-01-28 06:14:18,084 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 48 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-28 06:14:18,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 226 flow [2023-01-28 06:14:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:14:18,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:14:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-01-28 06:14:18,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-01-28 06:14:18,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-01-28 06:14:18,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-01-28 06:14:18,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:18,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-01-28 06:14:18,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 06:14:18,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 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 06:14:18,091 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 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 06:14:18,091 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-01-28 06:14:18,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 226 flow [2023-01-28 06:14:18,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:14:18,093 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 109 flow [2023-01-28 06:14:18,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-01-28 06:14:18,094 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-01-28 06:14:18,094 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 109 flow [2023-01-28 06:14:18,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 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 06:14:18,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:18,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:18,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 06:14:18,095 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:18,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:18,095 INFO L85 PathProgramCache]: Analyzing trace with hash -824947493, now seen corresponding path program 1 times [2023-01-28 06:14:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286535080] [2023-01-28 06:14:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:18,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:18,230 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 06:14:18,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286535080] [2023-01-28 06:14:18,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286535080] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:14:18,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:14:18,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:14:18,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37238078] [2023-01-28 06:14:18,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:14:18,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 06:14:18,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:18,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 06:14:18,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 06:14:18,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 402 [2023-01-28 06:14:18,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 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 06:14:18,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:18,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 402 [2023-01-28 06:14:18,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:18,293 INFO L130 PetriNetUnfolder]: 187/394 cut-off events. [2023-01-28 06:14:18,294 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-28 06:14:18,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 394 events. 187/394 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 12 based on Foata normal form. 42/410 useless extension candidates. Maximal degree in co-relation 865. Up to 341 conditions per place. [2023-01-28 06:14:18,295 INFO L137 encePairwiseOnDemand]: 399/402 looper letters, 43 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-01-28 06:14:18,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 216 flow [2023-01-28 06:14:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 06:14:18,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 06:14:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-01-28 06:14:18,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207296849087893 [2023-01-28 06:14:18,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-01-28 06:14:18,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-01-28 06:14:18,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:18,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-01-28 06:14:18,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 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 06:14:18,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 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 06:14:18,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 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 06:14:18,307 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 109 flow. Second operand 3 states and 628 transitions. [2023-01-28 06:14:18,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 216 flow [2023-01-28 06:14:18,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:14:18,309 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 112 flow [2023-01-28 06:14:18,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-01-28 06:14:18,310 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-01-28 06:14:18,310 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 112 flow [2023-01-28 06:14:18,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 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 06:14:18,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:18,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:18,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 06:14:18,312 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:18,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 818194887, now seen corresponding path program 1 times [2023-01-28 06:14:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:18,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238428759] [2023-01-28 06:14:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:18,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:18,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:18,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238428759] [2023-01-28 06:14:18,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238428759] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:14:18,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733002722] [2023-01-28 06:14:18,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:18,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:18,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:14:18,368 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 06:14:18,396 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 06:14:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:18,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 06:14:18,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:14:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:18,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:14:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:18,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733002722] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:14:18,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:14:18,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-28 06:14:18,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863583140] [2023-01-28 06:14:18,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:14:18,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 06:14:18,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:18,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 06:14:18,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 06:14:18,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:14:18,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 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 06:14:18,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:18,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:14:18,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:18,706 INFO L130 PetriNetUnfolder]: 246/531 cut-off events. [2023-01-28 06:14:18,706 INFO L131 PetriNetUnfolder]: For 36/38 co-relation queries the response was YES. [2023-01-28 06:14:18,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 531 events. 246/531 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1513 event pairs, 100 based on Foata normal form. 12/507 useless extension candidates. Maximal degree in co-relation 1194. Up to 238 conditions per place. [2023-01-28 06:14:18,709 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 70 selfloop transitions, 10 changer transitions 1/84 dead transitions. [2023-01-28 06:14:18,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 370 flow [2023-01-28 06:14:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:14:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:14:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1271 transitions. [2023-01-28 06:14:18,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269485903814262 [2023-01-28 06:14:18,711 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1271 transitions. [2023-01-28 06:14:18,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1271 transitions. [2023-01-28 06:14:18,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:18,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1271 transitions. [2023-01-28 06:14:18,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.83333333333334) internal successors, (1271), 6 states have internal predecessors, (1271), 0 states have call successors, (0), 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 06:14:18,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 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 06:14:18,718 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 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 06:14:18,718 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 112 flow. Second operand 6 states and 1271 transitions. [2023-01-28 06:14:18,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 370 flow [2023-01-28 06:14:18,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 06:14:18,721 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 170 flow [2023-01-28 06:14:18,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-01-28 06:14:18,723 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-01-28 06:14:18,723 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 170 flow [2023-01-28 06:14:18,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 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 06:14:18,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:18,724 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:18,741 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 06:14:18,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:18,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:18,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1030938622, now seen corresponding path program 2 times [2023-01-28 06:14:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:18,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478204268] [2023-01-28 06:14:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:18,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:19,038 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:19,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:19,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478204268] [2023-01-28 06:14:19,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478204268] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:14:19,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929318418] [2023-01-28 06:14:19,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 06:14:19,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:19,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:14:19,041 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 06:14:19,054 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 06:14:19,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:14:19,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:14:19,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 06:14:19,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:14:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:19,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:14:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:19,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929318418] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:14:19,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:14:19,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-28 06:14:19,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577722331] [2023-01-28 06:14:19,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:14:19,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 06:14:19,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:19,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 06:14:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-01-28 06:14:19,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:14:19,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 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 06:14:19,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:19,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:14:19,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:19,569 INFO L130 PetriNetUnfolder]: 423/934 cut-off events. [2023-01-28 06:14:19,569 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2023-01-28 06:14:19,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 934 events. 423/934 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2534 event pairs, 91 based on Foata normal form. 24/900 useless extension candidates. Maximal degree in co-relation 2357. Up to 217 conditions per place. [2023-01-28 06:14:19,573 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 136 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2023-01-28 06:14:19,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 161 transitions, 836 flow [2023-01-28 06:14:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 06:14:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 06:14:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2540 transitions. [2023-01-28 06:14:19,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265339966832504 [2023-01-28 06:14:19,577 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2540 transitions. [2023-01-28 06:14:19,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2540 transitions. [2023-01-28 06:14:19,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:19,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2540 transitions. [2023-01-28 06:14:19,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 211.66666666666666) internal successors, (2540), 12 states have internal predecessors, (2540), 0 states have call successors, (0), 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 06:14:19,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 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 06:14:19,586 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 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 06:14:19,586 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 170 flow. Second operand 12 states and 2540 transitions. [2023-01-28 06:14:19,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 161 transitions, 836 flow [2023-01-28 06:14:19,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 161 transitions, 797 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-01-28 06:14:19,594 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 320 flow [2023-01-28 06:14:19,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=320, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-01-28 06:14:19,596 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-01-28 06:14:19,596 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 320 flow [2023-01-28 06:14:19,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 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 06:14:19,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:19,598 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:19,606 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 06:14:19,803 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,SelfDestructingSolverStorable5 [2023-01-28 06:14:19,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:19,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:19,804 INFO L85 PathProgramCache]: Analyzing trace with hash -122187422, now seen corresponding path program 3 times [2023-01-28 06:14:19,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:19,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79284061] [2023-01-28 06:14:19,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:19,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:20,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:20,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79284061] [2023-01-28 06:14:20,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79284061] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:14:20,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248867096] [2023-01-28 06:14:20,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 06:14:20,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:20,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:14:20,085 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 06:14:20,087 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 06:14:20,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 06:14:20,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:14:20,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 06:14:20,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:14:20,912 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 06:14:20,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:14:20,933 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 06:14:20,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:14:20,979 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 21 treesize of output 20 [2023-01-28 06:14:21,011 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 19 treesize of output 18 [2023-01-28 06:14:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-01-28 06:14:21,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:14:21,106 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_38| Int) (v_ArrVal_576 (Array Int Int)) (v_ArrVal_578 Int)) (let ((.cse0 (select (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_576) |c_~#queue~0.base|)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (< (select (store .cse0 (+ (* 4 |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_38|) |c_~#queue~0.offset|) v_ArrVal_578) .cse1) 800) (< (select .cse0 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_38|)))) is different from false [2023-01-28 06:14:21,126 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:14:21,128 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 52 treesize of output 42 [2023-01-28 06:14:21,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:14:21,139 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 75 treesize of output 77 [2023-01-28 06:14:21,145 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 36 treesize of output 28 [2023-01-28 06:14:21,166 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 8 treesize of output 4 [2023-01-28 06:14:21,193 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:14:21,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 50 treesize of output 46 [2023-01-28 06:14:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 68 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 8 not checked. [2023-01-28 06:14:21,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248867096] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:14:21,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:14:21,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2023-01-28 06:14:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685302303] [2023-01-28 06:14:21,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:14:21,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 06:14:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 06:14:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=434, Unknown=1, NotChecked=44, Total=600 [2023-01-28 06:14:21,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 402 [2023-01-28 06:14:21,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 320 flow. Second operand has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 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 06:14:21,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:21,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 402 [2023-01-28 06:14:21,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:22,718 INFO L130 PetriNetUnfolder]: 821/1800 cut-off events. [2023-01-28 06:14:22,718 INFO L131 PetriNetUnfolder]: For 1316/1316 co-relation queries the response was YES. [2023-01-28 06:14:22,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 1800 events. 821/1800 cut-off events. For 1316/1316 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6406 event pairs, 57 based on Foata normal form. 8/1737 useless extension candidates. Maximal degree in co-relation 4844. Up to 285 conditions per place. [2023-01-28 06:14:22,727 INFO L137 encePairwiseOnDemand]: 390/402 looper letters, 267 selfloop transitions, 110 changer transitions 1/380 dead transitions. [2023-01-28 06:14:22,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 380 transitions, 2040 flow [2023-01-28 06:14:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-28 06:14:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-28 06:14:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6885 transitions. [2023-01-28 06:14:22,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982992016660882 [2023-01-28 06:14:22,740 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6885 transitions. [2023-01-28 06:14:22,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6885 transitions. [2023-01-28 06:14:22,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:22,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6885 transitions. [2023-01-28 06:14:22,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 160.11627906976744) internal successors, (6885), 43 states have internal predecessors, (6885), 0 states have call successors, (0), 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 06:14:22,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 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 06:14:22,782 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 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 06:14:22,782 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 320 flow. Second operand 43 states and 6885 transitions. [2023-01-28 06:14:22,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 380 transitions, 2040 flow [2023-01-28 06:14:22,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 380 transitions, 2025 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 06:14:22,791 INFO L231 Difference]: Finished difference. Result has 134 places, 163 transitions, 1172 flow [2023-01-28 06:14:22,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1172, PETRI_PLACES=134, PETRI_TRANSITIONS=163} [2023-01-28 06:14:22,792 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 87 predicate places. [2023-01-28 06:14:22,792 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 163 transitions, 1172 flow [2023-01-28 06:14:22,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 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 06:14:22,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:22,794 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:22,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 06:14:23,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:23,001 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:23,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash -161773555, now seen corresponding path program 1 times [2023-01-28 06:14:23,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:23,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723002208] [2023-01-28 06:14:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:23,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723002208] [2023-01-28 06:14:23,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723002208] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:14:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253422703] [2023-01-28 06:14:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:23,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:23,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:14:23,289 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 06:14:23,290 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 06:14:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:23,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 06:14:23,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:14:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:23,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:14:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:23,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253422703] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:14:23,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:14:23,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-01-28 06:14:23,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613714480] [2023-01-28 06:14:23,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:14:23,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 06:14:23,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:23,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 06:14:23,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-01-28 06:14:23,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:14:23,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 163 transitions, 1172 flow. Second operand has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 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 06:14:23,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:23,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:14:23,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:24,614 INFO L130 PetriNetUnfolder]: 1371/3210 cut-off events. [2023-01-28 06:14:24,614 INFO L131 PetriNetUnfolder]: For 28289/28289 co-relation queries the response was YES. [2023-01-28 06:14:24,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14004 conditions, 3210 events. 1371/3210 cut-off events. For 28289/28289 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 11580 event pairs, 136 based on Foata normal form. 104/3290 useless extension candidates. Maximal degree in co-relation 13961. Up to 452 conditions per place. [2023-01-28 06:14:24,635 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 413 selfloop transitions, 75 changer transitions 0/491 dead transitions. [2023-01-28 06:14:24,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 491 transitions, 5503 flow [2023-01-28 06:14:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 06:14:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 06:14:24,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5501 transitions. [2023-01-28 06:14:24,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263107539226942 [2023-01-28 06:14:24,644 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5501 transitions. [2023-01-28 06:14:24,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5501 transitions. [2023-01-28 06:14:24,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:24,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5501 transitions. [2023-01-28 06:14:24,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 211.57692307692307) internal successors, (5501), 26 states have internal predecessors, (5501), 0 states have call successors, (0), 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 06:14:24,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 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 06:14:24,663 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 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 06:14:24,664 INFO L175 Difference]: Start difference. First operand has 134 places, 163 transitions, 1172 flow. Second operand 26 states and 5501 transitions. [2023-01-28 06:14:24,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 491 transitions, 5503 flow [2023-01-28 06:14:24,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 491 transitions, 5316 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-01-28 06:14:24,697 INFO L231 Difference]: Finished difference. Result has 162 places, 201 transitions, 1742 flow [2023-01-28 06:14:24,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1742, PETRI_PLACES=162, PETRI_TRANSITIONS=201} [2023-01-28 06:14:24,698 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 115 predicate places. [2023-01-28 06:14:24,698 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 201 transitions, 1742 flow [2023-01-28 06:14:24,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 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 06:14:24,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:24,699 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:24,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 06:14:24,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:24,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:24,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash -346057744, now seen corresponding path program 2 times [2023-01-28 06:14:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:24,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107112107] [2023-01-28 06:14:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:24,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:25,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:25,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107112107] [2023-01-28 06:14:25,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107112107] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:14:25,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895286842] [2023-01-28 06:14:25,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 06:14:25,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:25,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:14:25,871 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 06:14:25,873 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 06:14:26,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:14:26,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:14:26,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-28 06:14:26,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:14:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:26,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:14:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:27,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895286842] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:14:27,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:14:27,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2023-01-28 06:14:27,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84039355] [2023-01-28 06:14:27,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:14:27,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-01-28 06:14:27,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:27,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-01-28 06:14:27,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-01-28 06:14:27,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:14:27,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 201 transitions, 1742 flow. Second operand has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 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 06:14:27,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:27,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:14:27,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:14:29,553 INFO L130 PetriNetUnfolder]: 2697/6382 cut-off events. [2023-01-28 06:14:29,553 INFO L131 PetriNetUnfolder]: For 100006/100006 co-relation queries the response was YES. [2023-01-28 06:14:29,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29607 conditions, 6382 events. 2697/6382 cut-off events. For 100006/100006 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 23247 event pairs, 136 based on Foata normal form. 208/6566 useless extension candidates. Maximal degree in co-relation 29551. Up to 1128 conditions per place. [2023-01-28 06:14:29,596 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 829 selfloop transitions, 153 changer transitions 0/985 dead transitions. [2023-01-28 06:14:29,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 985 transitions, 11795 flow [2023-01-28 06:14:29,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-01-28 06:14:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-01-28 06:14:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 11000 transitions. [2023-01-28 06:14:29,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262150784538844 [2023-01-28 06:14:29,607 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 11000 transitions. [2023-01-28 06:14:29,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 11000 transitions. [2023-01-28 06:14:29,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:14:29,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 11000 transitions. [2023-01-28 06:14:29,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 211.53846153846155) internal successors, (11000), 52 states have internal predecessors, (11000), 0 states have call successors, (0), 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 06:14:29,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 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 06:14:29,642 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 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 06:14:29,642 INFO L175 Difference]: Start difference. First operand has 162 places, 201 transitions, 1742 flow. Second operand 52 states and 11000 transitions. [2023-01-28 06:14:29,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 985 transitions, 11795 flow [2023-01-28 06:14:29,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 985 transitions, 11732 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-01-28 06:14:29,752 INFO L231 Difference]: Finished difference. Result has 229 places, 281 transitions, 3410 flow [2023-01-28 06:14:29,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3410, PETRI_PLACES=229, PETRI_TRANSITIONS=281} [2023-01-28 06:14:29,754 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 182 predicate places. [2023-01-28 06:14:29,754 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 281 transitions, 3410 flow [2023-01-28 06:14:29,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 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 06:14:29,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:14:29,756 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 50, 50, 50, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:14:29,762 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 06:14:29,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:29,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:14:29,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:14:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash 890330880, now seen corresponding path program 3 times [2023-01-28 06:14:29,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:14:29,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809697636] [2023-01-28 06:14:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:14:29,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:14:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:14:32,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 0 proven. 7675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:14:32,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:14:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809697636] [2023-01-28 06:14:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809697636] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:14:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853350040] [2023-01-28 06:14:32,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 06:14:32,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:14:32,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:14:32,882 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 06:14:32,885 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 06:14:34,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-28 06:14:34,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:14:34,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 06:14:34,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:14:35,112 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 13 treesize of output 9 [2023-01-28 06:14:35,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:14:35,144 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 16 treesize of output 18 [2023-01-28 06:14:35,195 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:14:35,201 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-01-28 06:14:35,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-28 06:14:35,262 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 23 treesize of output 22 [2023-01-28 06:14:35,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2023-01-28 06:14:35,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:14:35,363 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 16 treesize of output 18 [2023-01-28 06:14:35,438 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:14:35,445 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-01-28 06:14:35,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2023-01-28 06:14:35,492 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 23 treesize of output 22 [2023-01-28 06:14:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 644 proven. 245 refuted. 0 times theorem prover too weak. 6786 trivial. 0 not checked. [2023-01-28 06:14:35,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:14:35,687 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (or (< (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1) v_ArrVal_2171) (not (= (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1)) 800)))) is different from false [2023-01-28 06:14:35,697 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_2171) (not (= (let ((.cse3 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse0 .cse1 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse2 (+ |c_~#queue~0.offset| (* (select .cse2 .cse3) 4)) v_ArrVal_2175)) .cse3)) 800))))) is different from false [2023-01-28 06:14:35,717 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2169 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (not (= (let ((.cse1 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1)) 800)) (< (+ (select .cse2 .cse3) 1) v_ArrVal_2171)))) is different from false [2023-01-28 06:14:35,742 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2167 Int) (v_ArrVal_2169 Int) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse0 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2167)) (.cse1 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_2171) (not (= 800 (let ((.cse3 (+ |c_~#queue~0.offset| 3204))) (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse0 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse1 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse2 (+ (* (select .cse2 .cse3) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse3))))))) is different from false [2023-01-28 06:14:37,898 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_131| Int) (v_ArrVal_2167 Int) (v_ArrVal_2169 Int) (v_ArrVal_2166 (Array Int Int)) (v_ArrVal_2171 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_~#stored_elements~0.base| v_ArrVal_2166))) (let ((.cse4 (select .cse2 |c_~#queue~0.base|))) (let ((.cse3 (store .cse4 (+ |c_~#queue~0.offset| (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_131| 4)) v_ArrVal_2167)) (.cse1 (+ |c_~#queue~0.offset| 3204))) (or (not (= 800 (select (let ((.cse0 (select (store (store .cse2 |c_~#queue~0.base| (store (store .cse3 (+ 3208 |c_~#queue~0.offset|) v_ArrVal_2169) .cse1 v_ArrVal_2171)) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1))) (< (select .cse4 .cse1) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_131|) (< (+ (select .cse3 .cse1) 1) v_ArrVal_2171)))))) is different from false [2023-01-28 06:14:37,912 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:14:37,912 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 179 treesize of output 129 [2023-01-28 06:14:37,921 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:14:37,922 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 212 treesize of output 212 [2023-01-28 06:14:37,929 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 72 treesize of output 60 [2023-01-28 06:14:37,938 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 40 treesize of output 32 [2023-01-28 06:14:37,956 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 7 treesize of output 3 [2023-01-28 06:14:37,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 06:14:37,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 75 treesize of output 71 [2023-01-28 06:14:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 333 proven. 241 refuted. 48 times theorem prover too weak. 6786 trivial. 267 not checked. [2023-01-28 06:14:40,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853350040] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:14:40,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:14:40,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 11, 13] total 75 [2023-01-28 06:14:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758672540] [2023-01-28 06:14:40,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:14:40,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-01-28 06:14:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:14:40,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-01-28 06:14:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1491, Invalid=3349, Unknown=10, NotChecked=700, Total=5550 [2023-01-28 06:14:40,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 402 [2023-01-28 06:14:40,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 281 transitions, 3410 flow. Second operand has 75 states, 75 states have (on average 155.26666666666668) internal successors, (11645), 75 states have internal predecessors, (11645), 0 states have call successors, (0), 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 06:14:40,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:14:40,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 402 [2023-01-28 06:14:40,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:15:58,506 INFO L130 PetriNetUnfolder]: 5789/13244 cut-off events. [2023-01-28 06:15:58,506 INFO L131 PetriNetUnfolder]: For 195510/195510 co-relation queries the response was YES. [2023-01-28 06:15:58,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67354 conditions, 13244 events. 5789/13244 cut-off events. For 195510/195510 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 61762 event pairs, 213 based on Foata normal form. 408/13616 useless extension candidates. Maximal degree in co-relation 67271. Up to 2163 conditions per place. [2023-01-28 06:15:58,605 INFO L137 encePairwiseOnDemand]: 386/402 looper letters, 1958 selfloop transitions, 1567 changer transitions 1/3528 dead transitions. [2023-01-28 06:15:58,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 749 places, 3528 transitions, 35161 flow [2023-01-28 06:15:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 521 states. [2023-01-28 06:15:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2023-01-28 06:15:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 81260 transitions. [2023-01-28 06:15:58,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879833080279982 [2023-01-28 06:15:58,663 INFO L72 ComplementDD]: Start complementDD. Operand 521 states and 81260 transitions. [2023-01-28 06:15:58,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 521 states and 81260 transitions. [2023-01-28 06:15:58,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:15:58,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 521 states and 81260 transitions. [2023-01-28 06:15:58,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 522 states, 521 states have (on average 155.96928982725527) internal successors, (81260), 521 states have internal predecessors, (81260), 0 states have call successors, (0), 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 06:15:58,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 522 states, 522 states have (on average 402.0) internal successors, (209844), 522 states have internal predecessors, (209844), 0 states have call successors, (0), 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 06:15:58,938 INFO L81 ComplementDD]: Finished complementDD. Result has 522 states, 522 states have (on average 402.0) internal successors, (209844), 522 states have internal predecessors, (209844), 0 states have call successors, (0), 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 06:15:58,938 INFO L175 Difference]: Start difference. First operand has 229 places, 281 transitions, 3410 flow. Second operand 521 states and 81260 transitions. [2023-01-28 06:15:58,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 749 places, 3528 transitions, 35161 flow [2023-01-28 06:15:59,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 3528 transitions, 34942 flow, removed 0 selfloop flow, removed 23 redundant places. [2023-01-28 06:15:59,529 INFO L231 Difference]: Finished difference. Result has 982 places, 1808 transitions, 28624 flow [2023-01-28 06:15:59,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=521, PETRI_FLOW=28624, PETRI_PLACES=982, PETRI_TRANSITIONS=1808} [2023-01-28 06:15:59,530 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 935 predicate places. [2023-01-28 06:15:59,530 INFO L495 AbstractCegarLoop]: Abstraction has has 982 places, 1808 transitions, 28624 flow [2023-01-28 06:15:59,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 155.26666666666668) internal successors, (11645), 75 states have internal predecessors, (11645), 0 states have call successors, (0), 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 06:15:59,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:15:59,532 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 51, 51, 51, 38, 38, 38, 38, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:15:59,544 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 06:15:59,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:15:59,738 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:15:59,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:15:59,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1940408699, now seen corresponding path program 4 times [2023-01-28 06:15:59,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:15:59,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108132688] [2023-01-28 06:15:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:15:59,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:15:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:16:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:16:02,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:16:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108132688] [2023-01-28 06:16:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108132688] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:16:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87916292] [2023-01-28 06:16:02,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 06:16:02,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:16:02,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:16:02,520 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 06:16:02,522 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 06:17:55,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 06:17:55,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:17:55,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 53 conjunts are in the unsatisfiable core [2023-01-28 06:17:55,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:17:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:17:55,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:17:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:17:58,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87916292] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:17:58,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:17:58,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2023-01-28 06:17:58,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650986418] [2023-01-28 06:17:58,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:17:58,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-01-28 06:17:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:17:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-01-28 06:17:58,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2023-01-28 06:17:58,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-28 06:17:58,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 982 places, 1808 transitions, 28624 flow. Second operand has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 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 06:17:58,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:17:58,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-28 06:17:58,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:18:36,248 INFO L130 PetriNetUnfolder]: 10300/25207 cut-off events. [2023-01-28 06:18:36,248 INFO L131 PetriNetUnfolder]: For 19688464/19688464 co-relation queries the response was YES. [2023-01-28 06:18:36,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700705 conditions, 25207 events. 10300/25207 cut-off events. For 19688464/19688464 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 122062 event pairs, 399 based on Foata normal form. 848/26019 useless extension candidates. Maximal degree in co-relation 700365. Up to 6939 conditions per place. [2023-01-28 06:18:37,010 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 3731 selfloop transitions, 522 changer transitions 0/4256 dead transitions. [2023-01-28 06:18:37,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1087 places, 4256 transitions, 144092 flow [2023-01-28 06:18:37,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-01-28 06:18:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-01-28 06:18:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 22421 transitions. [2023-01-28 06:18:37,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261663381207171 [2023-01-28 06:18:37,023 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 22421 transitions. [2023-01-28 06:18:37,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 22421 transitions. [2023-01-28 06:18:37,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:18:37,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 22421 transitions. [2023-01-28 06:18:37,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 211.5188679245283) internal successors, (22421), 106 states have internal predecessors, (22421), 0 states have call successors, (0), 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 06:18:37,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 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 06:18:37,076 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 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 06:18:37,076 INFO L175 Difference]: Start difference. First operand has 982 places, 1808 transitions, 28624 flow. Second operand 106 states and 22421 transitions. [2023-01-28 06:18:37,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1087 places, 4256 transitions, 144092 flow [2023-01-28 06:19:00,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 996 places, 4256 transitions, 119310 flow, removed 10235 selfloop flow, removed 91 redundant places. [2023-01-28 06:19:00,293 INFO L231 Difference]: Finished difference. Result has 1050 places, 2072 transitions, 22080 flow [2023-01-28 06:19:00,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=16141, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=22080, PETRI_PLACES=1050, PETRI_TRANSITIONS=2072} [2023-01-28 06:19:00,295 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1003 predicate places. [2023-01-28 06:19:00,295 INFO L495 AbstractCegarLoop]: Abstraction has has 1050 places, 2072 transitions, 22080 flow [2023-01-28 06:19:00,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 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 06:19:00,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:19:00,297 INFO L208 CegarLoopForPetriNet]: trace histogram [104, 104, 104, 104, 77, 77, 77, 77, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:19:00,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 06:19:00,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:19:00,505 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 06:19:00,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:19:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1986383804, now seen corresponding path program 5 times [2023-01-28 06:19:00,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:19:00,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124273334] [2023-01-28 06:19:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:19:00,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:19:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:19:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 0 proven. 36364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:19:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:19:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124273334] [2023-01-28 06:19:10,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124273334] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:19:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649703596] [2023-01-28 06:19:10,825 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 06:19:10,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:19:10,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:19:10,827 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 06:19:10,827 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 06:19:12,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-01-28 06:19:12,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:19:12,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 195 conjunts are in the unsatisfiable core [2023-01-28 06:19:12,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:19:12,841 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 13 treesize of output 9 [2023-01-28 06:19:12,896 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-28 06:19:12,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 25 treesize of output 38 [2023-01-28 06:19:13,093 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:19:13,102 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-28 06:19:13,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-28 06:19:13,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:13,234 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 48 treesize of output 47 [2023-01-28 06:19:13,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 59 treesize of output 43 [2023-01-28 06:19:13,458 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-28 06:19:13,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 50 treesize of output 63 [2023-01-28 06:19:13,598 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:19:13,608 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-28 06:19:13,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-28 06:19:13,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:13,724 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 48 treesize of output 47 [2023-01-28 06:19:13,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 69 treesize of output 47 [2023-01-28 06:19:14,037 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-28 06:19:14,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 50 treesize of output 63 [2023-01-28 06:19:14,198 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:19:14,206 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-28 06:19:14,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-28 06:19:14,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:14,321 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 48 treesize of output 47 [2023-01-28 06:19:14,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 69 treesize of output 47 [2023-01-28 06:19:14,610 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-28 06:19:14,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 50 treesize of output 63 [2023-01-28 06:19:14,810 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:19:14,819 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-28 06:19:14,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-28 06:19:14,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:14,950 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 48 treesize of output 47 [2023-01-28 06:19:15,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 13 [2023-01-28 06:19:15,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:15,141 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 25 treesize of output 24 [2023-01-28 06:19:15,308 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:19:15,314 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-28 06:19:15,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-28 06:19:15,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:15,425 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 23 treesize of output 22 [2023-01-28 06:19:15,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 13 [2023-01-28 06:19:15,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:15,621 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 25 treesize of output 24 [2023-01-28 06:19:15,794 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:19:15,801 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-28 06:19:15,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-28 06:19:15,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:15,918 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 23 treesize of output 22 [2023-01-28 06:19:16,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 13 [2023-01-28 06:19:16,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:16,131 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 25 treesize of output 24 [2023-01-28 06:19:16,315 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:19:16,321 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-28 06:19:16,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-28 06:19:16,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:16,427 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 23 treesize of output 22 [2023-01-28 06:19:16,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 34 treesize of output 18 [2023-01-28 06:19:16,672 INFO L321 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-01-28 06:19:16,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 31 treesize of output 30 [2023-01-28 06:19:16,801 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 06:19:16,807 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-28 06:19:16,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-28 06:19:16,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 06:19:16,876 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 23 treesize of output 22 [2023-01-28 06:19:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 12060 proven. 93 refuted. 0 times theorem prover too weak. 24211 trivial. 0 not checked. [2023-01-28 06:19:16,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:22:25,754 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4859 Int) (v_ArrVal_4849 Int) (v_ArrVal_4866 Int) (v_ArrVal_4856 Int) (v_ArrVal_4853 Int) (v_ArrVal_4864 Int) (v_ArrVal_4854 Int) (v_ArrVal_4851 Int) (v_ArrVal_4863 Int) (v_ArrVal_4861 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| Int) (|v_t1Thread1of1ForFork0_~i~0#1_396| Int) (|v_t1Thread1of1ForFork0_~i~0#1_395| Int)) (let ((.cse11 (store |c_#memory_int| |c_~#stored_elements~0.base| (store (select |c_#memory_int| |c_~#stored_elements~0.base|) (+ |c_~#stored_elements~0.offset| (* |c_t1Thread1of1ForFork0_~i~0#1| 4)) v_ArrVal_4849)))) (let ((.cse1 (select .cse11 |c_~#queue~0.base|))) (let ((.cse9 (store .cse1 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| 4) |c_~#queue~0.offset|) v_ArrVal_4851)) (.cse8 (+ 3208 |c_~#queue~0.offset|)) (.cse2 (+ |c_~#queue~0.offset| 3204))) (let ((.cse7 (let ((.cse10 (store .cse11 |c_~#queue~0.base| (store (store .cse9 .cse8 v_ArrVal_4853) .cse2 v_ArrVal_4854)))) (store .cse10 |c_~#stored_elements~0.base| (store (select .cse10 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_396| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4856))))) (let ((.cse5 (select .cse7 |c_~#queue~0.base|))) (let ((.cse4 (store .cse5 (+ |c_~#queue~0.offset| (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| 4)) v_ArrVal_4859))) (let ((.cse0 (select .cse9 .cse2)) (.cse3 (select (let ((.cse6 (store .cse7 |c_~#queue~0.base| (store (store .cse4 .cse8 v_ArrVal_4861) .cse2 v_ArrVal_4863)))) (store .cse6 |c_~#stored_elements~0.base| (store (select .cse6 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_395| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4864))) |c_~#queue~0.base|))) (or (< (+ .cse0 1) v_ArrVal_4854) (< (select .cse1 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504|) (= 800 .cse0) (< (select .cse3 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500|) (< (+ (select .cse4 .cse2) 1) v_ArrVal_4863) (< |v_t1Thread1of1ForFork0_~i~0#1_396| (+ |c_t1Thread1of1ForFork0_~i~0#1| 1)) (< (select .cse5 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502|) (not (= 800 (select (store .cse3 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| 4) |c_~#queue~0.offset|) v_ArrVal_4866) .cse2))) (< |v_t1Thread1of1ForFork0_~i~0#1_395| (+ |v_t1Thread1of1ForFork0_~i~0#1_396| 1))))))))))) is different from false [2023-01-28 06:24:34,369 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4859 Int) (v_ArrVal_4849 Int) (v_ArrVal_4866 Int) (v_ArrVal_4845 Int) (v_ArrVal_4856 Int) (v_ArrVal_4853 Int) (v_ArrVal_4864 Int) (v_ArrVal_4854 Int) (v_ArrVal_4851 Int) (v_ArrVal_4863 Int) (v_ArrVal_4861 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| Int) (|v_t1Thread1of1ForFork0_~i~0#1_396| Int) (|v_t1Thread1of1ForFork0_~i~0#1_395| Int)) (let ((.cse11 (let ((.cse12 (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (let ((.cse13 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse14 (+ 3204 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|))) (store (store .cse13 (+ 3208 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_4845) .cse14 (+ (select .cse13 .cse14) 1)))))) (store .cse12 |c_~#stored_elements~0.base| (store (select .cse12 |c_~#stored_elements~0.base|) (+ |c_~#stored_elements~0.offset| (* |c_t1Thread1of1ForFork0_~i~0#1| 4)) v_ArrVal_4849))))) (let ((.cse5 (select .cse11 |c_~#queue~0.base|))) (let ((.cse9 (store .cse5 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504| 4) |c_~#queue~0.offset|) v_ArrVal_4851)) (.cse8 (+ 3208 |c_~#queue~0.offset|)) (.cse2 (+ |c_~#queue~0.offset| 3204))) (let ((.cse7 (let ((.cse10 (store .cse11 |c_~#queue~0.base| (store (store .cse9 .cse8 v_ArrVal_4853) .cse2 v_ArrVal_4854)))) (store .cse10 |c_~#stored_elements~0.base| (store (select .cse10 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_396| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4856))))) (let ((.cse4 (select .cse7 |c_~#queue~0.base|))) (let ((.cse1 (store .cse4 (+ |c_~#queue~0.offset| (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502| 4)) v_ArrVal_4859))) (let ((.cse0 (select .cse9 .cse2)) (.cse3 (select (let ((.cse6 (store .cse7 |c_~#queue~0.base| (store (store .cse1 .cse8 v_ArrVal_4861) .cse2 v_ArrVal_4863)))) (store .cse6 |c_~#stored_elements~0.base| (store (select .cse6 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_395| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4864))) |c_~#queue~0.base|))) (or (= 800 .cse0) (< |v_t1Thread1of1ForFork0_~i~0#1_396| (+ |c_t1Thread1of1ForFork0_~i~0#1| 1)) (< (+ (select .cse1 .cse2) 1) v_ArrVal_4863) (< (select .cse3 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500|) (< (select .cse4 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_502|) (< |v_t1Thread1of1ForFork0_~i~0#1_395| (+ |v_t1Thread1of1ForFork0_~i~0#1_396| 1)) (< (select .cse5 .cse2) |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_504|) (< (+ .cse0 1) v_ArrVal_4854) (not (= 800 (select (store .cse3 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_500| 4) |c_~#queue~0.offset|) v_ArrVal_4866) .cse2)))))))))))) is different from false Received shutdown request... [2023-01-28 06:28:15,904 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 06:28:15,907 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 06:28:16,215 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 06:28:16,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 06:28:16,415 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,SelfDestructingSolverStorable11 [2023-01-28 06:28:16,415 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 168 known predicates. [2023-01-28 06:28:16,417 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-28 06:28:16,417 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 06:28:16,417 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 06:28:16,417 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-28 06:28:16,417 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1, 1, 1] [2023-01-28 06:28:16,420 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:28:16,420 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:28:16,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:28:16 BasicIcfg [2023-01-28 06:28:16,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:28:16,422 INFO L158 Benchmark]: Toolchain (without parser) took 846455.44ms. Allocated memory was 331.4MB in the beginning and 5.5GB in the end (delta: 5.2GB). Free memory was 298.5MB in the beginning and 1.1GB in the end (delta: -792.3MB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-28 06:28:16,422 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:28:16,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.43ms. Allocated memory is still 331.4MB. Free memory was 298.2MB in the beginning and 268.4MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-28 06:28:16,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.73ms. Allocated memory is still 331.4MB. Free memory was 268.4MB in the beginning and 265.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:28:16,422 INFO L158 Benchmark]: Boogie Preprocessor took 34.73ms. Allocated memory is still 331.4MB. Free memory was 265.6MB in the beginning and 263.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:28:16,423 INFO L158 Benchmark]: RCFGBuilder took 398.86ms. Allocated memory is still 331.4MB. Free memory was 263.2MB in the beginning and 242.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 06:28:16,423 INFO L158 Benchmark]: TraceAbstraction took 845337.91ms. Allocated memory was 331.4MB in the beginning and 5.5GB in the end (delta: 5.2GB). Free memory was 241.9MB in the beginning and 1.1GB in the end (delta: -848.9MB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2023-01-28 06:28:16,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 613.43ms. Allocated memory is still 331.4MB. Free memory was 298.2MB in the beginning and 268.4MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.73ms. Allocated memory is still 331.4MB. Free memory was 268.4MB in the beginning and 265.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.73ms. Allocated memory is still 331.4MB. Free memory was 265.6MB in the beginning and 263.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 398.86ms. Allocated memory is still 331.4MB. Free memory was 263.2MB in the beginning and 242.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 845337.91ms. Allocated memory was 331.4MB in the beginning and 5.5GB in the end (delta: 5.2GB). Free memory was 241.9MB in the beginning and 1.1GB in the end (delta: -848.9MB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 199 PlacesBefore, 47 PlacesAfterwards, 205 TransitionsBefore, 47 TransitionsAfterwards, 9984 CoEnabledTransitionPairs, 7 FixpointIterations, 58 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 186 TotalNumberOfCompositions, 19772 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9519, independent: 9080, independent conditional: 0, independent unconditional: 9080, dependent: 439, dependent conditional: 0, dependent unconditional: 439, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5401, independent: 5319, independent conditional: 0, independent unconditional: 5319, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9519, independent: 3761, independent conditional: 0, independent unconditional: 3761, dependent: 357, dependent conditional: 0, dependent unconditional: 357, unknown: 5401, unknown conditional: 0, unknown unconditional: 5401] , Statistics on independence cache: Total cache size (in pairs): 268, Positive cache size: 233, Positive conditional cache size: 0, Positive unconditional cache size: 233, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1033]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 168 known predicates. - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 168 known predicates. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 168 known predicates. - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 168 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 327 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 845.2s, OverallIterations: 12, TraceHistogramMax: 104, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 146.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10208 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10208 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 17326 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1614 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5639 IncrementalHoareTripleChecker+Invalid, 24579 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1614 mSolverCounterUnsat, 1 mSDtfsCounter, 5639 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4266 GetRequests, 2943 SyntacticMatches, 474 SemanticMatches, 849 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 310141 ImplicationChecksByTransitivity, 77.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28624occurred in iteration=10, InterpolantAutomatonStates: 777, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 114.9s SatisfiabilityAnalysisTime, 18.7s InterpolantComputationTime, 2615 NumberOfCodeBlocks, 2221 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 3867 ConstructedInterpolants, 14 QuantifiedInterpolants, 14444 SizeOfPredicates, 23 NumberOfNonLiveVariables, 6392 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 15102/56455 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown