/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 17:43:12,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 17:43:12,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 17:43:12,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 17:43:12,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 17:43:12,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 17:43:12,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 17:43:12,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 17:43:12,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 17:43:12,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 17:43:12,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 17:43:12,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 17:43:12,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 17:43:12,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 17:43:12,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 17:43:12,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 17:43:12,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 17:43:12,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 17:43:12,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 17:43:12,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 17:43:12,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 17:43:12,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 17:43:12,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 17:43:12,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 17:43:12,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 17:43:12,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 17:43:12,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 17:43:12,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 17:43:12,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 17:43:12,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 17:43:12,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 17:43:12,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 17:43:12,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 17:43:12,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 17:43:12,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 17:43:12,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 17:43:12,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 17:43:12,544 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 17:43:12,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 17:43:12,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 17:43:12,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 17:43:12,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 17:43:12,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 17:43:12,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 17:43:12,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 17:43:12,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 17:43:12,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 17:43:12,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 17:43:12,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 17:43:12,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:43:12,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 17:43:12,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 17:43:12,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 17:43:12,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 17:43:12,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 17:43:12,547 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 17:43:12,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 17:43:12,548 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 17:43:12,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 17:43:12,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 17:43:12,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 17:43:12,724 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 17:43:12,725 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 17:43:12,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-1.i [2023-01-27 17:43:13,725 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 17:43:13,943 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 17:43:13,943 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-1.i [2023-01-27 17:43:13,959 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47396659a/d3d568d9d07448e9a8056c0b14895c05/FLAG11f7c8073 [2023-01-27 17:43:13,969 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47396659a/d3d568d9d07448e9a8056c0b14895c05 [2023-01-27 17:43:13,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 17:43:13,972 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 17:43:13,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 17:43:13,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 17:43:13,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 17:43:13,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:43:13" (1/1) ... [2023-01-27 17:43:13,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c53dc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:13, skipping insertion in model container [2023-01-27 17:43:13,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:43:13" (1/1) ... [2023-01-27 17:43:13,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 17:43:14,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 17:43:14,241 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/stack_longest-1.i[41530,41543] [2023-01-27 17:43:14,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:43:14,279 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 17:43:14,303 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/stack_longest-1.i[41530,41543] [2023-01-27 17:43:14,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:43:14,350 INFO L208 MainTranslator]: Completed translation [2023-01-27 17:43:14,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14 WrapperNode [2023-01-27 17:43:14,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 17:43:14,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 17:43:14,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 17:43:14,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 17:43:14,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,402 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 156 [2023-01-27 17:43:14,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 17:43:14,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 17:43:14,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 17:43:14,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 17:43:14,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,429 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 17:43:14,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 17:43:14,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 17:43:14,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 17:43:14,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (1/1) ... [2023-01-27 17:43:14,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:43:14,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:43:14,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 17:43:14,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 17:43:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 17:43:14,493 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 17:43:14,493 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 17:43:14,494 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 17:43:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 17:43:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 17:43:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 17:43:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 17:43:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 17:43:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 17:43:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 17:43:14,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 17:43:14,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 17:43:14,495 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 17:43:14,582 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 17:43:14,583 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 17:43:14,796 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 17:43:14,802 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 17:43:14,802 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 17:43:14,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:43:14 BoogieIcfgContainer [2023-01-27 17:43:14,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 17:43:14,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 17:43:14,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 17:43:14,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 17:43:14,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 05:43:13" (1/3) ... [2023-01-27 17:43:14,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5455101c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:43:14, skipping insertion in model container [2023-01-27 17:43:14,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:43:14" (2/3) ... [2023-01-27 17:43:14,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5455101c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:43:14, skipping insertion in model container [2023-01-27 17:43:14,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:43:14" (3/3) ... [2023-01-27 17:43:14,809 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2023-01-27 17:43:14,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 17:43:14,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 17:43:14,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 17:43:14,920 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 17:43:14,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 158 transitions, 332 flow [2023-01-27 17:43:15,002 INFO L130 PetriNetUnfolder]: 10/156 cut-off events. [2023-01-27 17:43:15,002 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:43:15,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 156 events. 10/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 386 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2023-01-27 17:43:15,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 158 transitions, 332 flow [2023-01-27 17:43:15,014 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 147 transitions, 303 flow [2023-01-27 17:43:15,016 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:43:15,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 147 transitions, 303 flow [2023-01-27 17:43:15,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 147 transitions, 303 flow [2023-01-27 17:43:15,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 147 transitions, 303 flow [2023-01-27 17:43:15,047 INFO L130 PetriNetUnfolder]: 10/147 cut-off events. [2023-01-27 17:43:15,047 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 17:43:15,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 147 events. 10/147 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 316 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2023-01-27 17:43:15,051 INFO L119 LiptonReduction]: Number of co-enabled transitions 7334 [2023-01-27 17:43:17,808 INFO L134 LiptonReduction]: Checked pairs total: 9508 [2023-01-27 17:43:17,809 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-01-27 17:43:17,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:43:17,828 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;@6777e132, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:43:17,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 17:43:17,833 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-27 17:43:17,833 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 17:43:17,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:17,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 17:43:17,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:17,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1714417513, now seen corresponding path program 1 times [2023-01-27 17:43:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790949916] [2023-01-27 17:43:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:17,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:18,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:43:18,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790949916] [2023-01-27 17:43:18,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790949916] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:43:18,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:43:18,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:43:18,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619306574] [2023-01-27 17:43:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:43:18,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:43:18,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:43:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:43:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:43:18,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 294 [2023-01-27 17:43:18,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:43:18,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 294 [2023-01-27 17:43:18,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:43:18,293 INFO L130 PetriNetUnfolder]: 845/1378 cut-off events. [2023-01-27 17:43:18,294 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-01-27 17:43:18,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2794 conditions, 1378 events. 845/1378 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5796 event pairs, 243 based on Foata normal form. 0/1124 useless extension candidates. Maximal degree in co-relation 2588. Up to 777 conditions per place. [2023-01-27 17:43:18,304 INFO L137 encePairwiseOnDemand]: 289/294 looper letters, 55 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-01-27 17:43:18,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 60 transitions, 253 flow [2023-01-27 17:43:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:43:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:43:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-01-27 17:43:18,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340136054421769 [2023-01-27 17:43:18,322 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-01-27 17:43:18,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-01-27 17:43:18,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:43:18,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-01-27 17:43:18,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,340 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 75 flow. Second operand 3 states and 471 transitions. [2023-01-27 17:43:18,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 60 transitions, 253 flow [2023-01-27 17:43:18,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 60 transitions, 245 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 17:43:18,347 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 100 flow [2023-01-27 17:43:18,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-01-27 17:43:18,351 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-01-27 17:43:18,351 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 100 flow [2023-01-27 17:43:18,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:18,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:43:18,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 17:43:18,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:18,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1177704333, now seen corresponding path program 1 times [2023-01-27 17:43:18,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:18,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930504697] [2023-01-27 17:43:18,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:18,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:18,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:43:18,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930504697] [2023-01-27 17:43:18,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930504697] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:43:18,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:43:18,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:43:18,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670909066] [2023-01-27 17:43:18,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:43:18,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:43:18,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:43:18,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:43:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:43:18,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 294 [2023-01-27 17:43:18,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:43:18,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 294 [2023-01-27 17:43:18,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:43:18,615 INFO L130 PetriNetUnfolder]: 897/1478 cut-off events. [2023-01-27 17:43:18,615 INFO L131 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2023-01-27 17:43:18,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3207 conditions, 1478 events. 897/1478 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6180 event pairs, 398 based on Foata normal form. 0/1224 useless extension candidates. Maximal degree in co-relation 2810. Up to 1184 conditions per place. [2023-01-27 17:43:18,620 INFO L137 encePairwiseOnDemand]: 291/294 looper letters, 48 selfloop transitions, 2 changer transitions 3/54 dead transitions. [2023-01-27 17:43:18,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 249 flow [2023-01-27 17:43:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:43:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:43:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-01-27 17:43:18,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2023-01-27 17:43:18,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-01-27 17:43:18,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-01-27 17:43:18,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:43:18,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-01-27 17:43:18,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,625 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 100 flow. Second operand 3 states and 480 transitions. [2023-01-27 17:43:18,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 249 flow [2023-01-27 17:43:18,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 17:43:18,627 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 104 flow [2023-01-27 17:43:18,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-01-27 17:43:18,630 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-01-27 17:43:18,630 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 104 flow [2023-01-27 17:43:18,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:18,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:43:18,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 17:43:18,631 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:18,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash -613507711, now seen corresponding path program 1 times [2023-01-27 17:43:18,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:18,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33887466] [2023-01-27 17:43:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:18,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:18,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:43:18,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33887466] [2023-01-27 17:43:18,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33887466] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:43:18,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:43:18,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:43:18,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086507978] [2023-01-27 17:43:18,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:43:18,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:43:18,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:43:18,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:43:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:43:18,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 294 [2023-01-27 17:43:18,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:43:18,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 294 [2023-01-27 17:43:18,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:43:18,858 INFO L130 PetriNetUnfolder]: 861/1442 cut-off events. [2023-01-27 17:43:18,858 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-01-27 17:43:18,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 1442 events. 861/1442 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6182 event pairs, 584 based on Foata normal form. 50/1334 useless extension candidates. Maximal degree in co-relation 2808. Up to 1258 conditions per place. [2023-01-27 17:43:18,866 INFO L137 encePairwiseOnDemand]: 291/294 looper letters, 50 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-01-27 17:43:18,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 56 transitions, 264 flow [2023-01-27 17:43:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:43:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:43:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-01-27 17:43:18,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2023-01-27 17:43:18,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-01-27 17:43:18,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-01-27 17:43:18,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:43:18,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-01-27 17:43:18,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,872 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 104 flow. Second operand 3 states and 472 transitions. [2023-01-27 17:43:18,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 56 transitions, 264 flow [2023-01-27 17:43:18,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 17:43:18,874 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 122 flow [2023-01-27 17:43:18,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-01-27 17:43:18,875 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-01-27 17:43:18,875 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 122 flow [2023-01-27 17:43:18,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:18,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:18,875 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:43:18,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 17:43:18,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:18,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash 558175028, now seen corresponding path program 1 times [2023-01-27 17:43:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:18,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774213833] [2023-01-27 17:43:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:18,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:18,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:43:18,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774213833] [2023-01-27 17:43:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774213833] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 17:43:18,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322943849] [2023-01-27 17:43:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:18,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:43:18,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:43:18,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 17:43:19,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 17:43:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:19,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 17:43:19,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 17:43:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:19,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 17:43:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322943849] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 17:43:19,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 17:43:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-27 17:43:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325408121] [2023-01-27 17:43:19,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 17:43:19,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 17:43:19,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:43:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 17:43:19,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-27 17:43:19,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 294 [2023-01-27 17:43:19,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 122 flow. Second operand has 8 states, 8 states have (on average 138.375) internal successors, (1107), 8 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:43:19,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 294 [2023-01-27 17:43:19,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:43:19,556 INFO L130 PetriNetUnfolder]: 1815/3000 cut-off events. [2023-01-27 17:43:19,556 INFO L131 PetriNetUnfolder]: For 1081/1081 co-relation queries the response was YES. [2023-01-27 17:43:19,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7073 conditions, 3000 events. 1815/3000 cut-off events. For 1081/1081 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 14159 event pairs, 349 based on Foata normal form. 48/2736 useless extension candidates. Maximal degree in co-relation 6486. Up to 844 conditions per place. [2023-01-27 17:43:19,570 INFO L137 encePairwiseOnDemand]: 288/294 looper letters, 164 selfloop transitions, 22 changer transitions 0/187 dead transitions. [2023-01-27 17:43:19,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 187 transitions, 900 flow [2023-01-27 17:43:19,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 17:43:19,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 17:43:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1535 transitions. [2023-01-27 17:43:19,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221088435374149 [2023-01-27 17:43:19,573 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1535 transitions. [2023-01-27 17:43:19,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1535 transitions. [2023-01-27 17:43:19,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:43:19,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1535 transitions. [2023-01-27 17:43:19,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 153.5) internal successors, (1535), 10 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 294.0) internal successors, (3234), 11 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,581 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 294.0) internal successors, (3234), 11 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,581 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 122 flow. Second operand 10 states and 1535 transitions. [2023-01-27 17:43:19,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 187 transitions, 900 flow [2023-01-27 17:43:19,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 187 transitions, 887 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 17:43:19,586 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 280 flow [2023-01-27 17:43:19,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2023-01-27 17:43:19,586 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2023-01-27 17:43:19,587 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 280 flow [2023-01-27 17:43:19,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 138.375) internal successors, (1107), 8 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:19,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:43:19,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 17:43:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 17:43:19,793 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:19,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash -957332165, now seen corresponding path program 1 times [2023-01-27 17:43:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:19,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032413869] [2023-01-27 17:43:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:43:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032413869] [2023-01-27 17:43:19,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032413869] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:43:19,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:43:19,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:43:19,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205192983] [2023-01-27 17:43:19,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:43:19,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:43:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:43:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:43:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:43:19,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 294 [2023-01-27 17:43:19,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 280 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:43:19,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 294 [2023-01-27 17:43:19,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:43:19,933 INFO L130 PetriNetUnfolder]: 573/1102 cut-off events. [2023-01-27 17:43:19,933 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2023-01-27 17:43:19,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2672 conditions, 1102 events. 573/1102 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4907 event pairs, 98 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 1698. Up to 785 conditions per place. [2023-01-27 17:43:19,937 INFO L137 encePairwiseOnDemand]: 289/294 looper letters, 46 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-01-27 17:43:19,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 329 flow [2023-01-27 17:43:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:43:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:43:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-01-27 17:43:19,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2023-01-27 17:43:19,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-01-27 17:43:19,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-01-27 17:43:19,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:43:19,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-01-27 17:43:19,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 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) [2023-01-27 17:43:19,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 294.0) internal successors, (1176), 4 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,940 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 280 flow. Second operand 3 states and 450 transitions. [2023-01-27 17:43:19,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 329 flow [2023-01-27 17:43:19,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 317 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-27 17:43:19,943 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 204 flow [2023-01-27 17:43:19,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-01-27 17:43:19,943 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2023-01-27 17:43:19,944 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 204 flow [2023-01-27 17:43:19,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:19,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:43:19,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 17:43:19,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:19,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:19,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1417362489, now seen corresponding path program 1 times [2023-01-27 17:43:19,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:19,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071981154] [2023-01-27 17:43:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:19,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:19,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:43:19,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071981154] [2023-01-27 17:43:19,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071981154] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:43:19,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:43:19,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:43:19,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613046166] [2023-01-27 17:43:19,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:43:19,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 17:43:19,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:43:19,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 17:43:19,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 17:43:19,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 294 [2023-01-27 17:43:19,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:19,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:43:19,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 294 [2023-01-27 17:43:19,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:43:20,148 INFO L130 PetriNetUnfolder]: 679/1270 cut-off events. [2023-01-27 17:43:20,148 INFO L131 PetriNetUnfolder]: For 397/397 co-relation queries the response was YES. [2023-01-27 17:43:20,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3196 conditions, 1270 events. 679/1270 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5464 event pairs, 209 based on Foata normal form. 18/1288 useless extension candidates. Maximal degree in co-relation 2552. Up to 666 conditions per place. [2023-01-27 17:43:20,153 INFO L137 encePairwiseOnDemand]: 288/294 looper letters, 78 selfloop transitions, 14 changer transitions 0/93 dead transitions. [2023-01-27 17:43:20,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 93 transitions, 524 flow [2023-01-27 17:43:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 17:43:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 17:43:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 896 transitions. [2023-01-27 17:43:20,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2023-01-27 17:43:20,155 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 896 transitions. [2023-01-27 17:43:20,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 896 transitions. [2023-01-27 17:43:20,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:43:20,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 896 transitions. [2023-01-27 17:43:20,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.33333333333334) internal successors, (896), 6 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:20,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 294.0) internal successors, (2058), 7 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:20,159 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 294.0) internal successors, (2058), 7 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:20,159 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 204 flow. Second operand 6 states and 896 transitions. [2023-01-27 17:43:20,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 93 transitions, 524 flow [2023-01-27 17:43:20,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 511 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 17:43:20,162 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 271 flow [2023-01-27 17:43:20,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-01-27 17:43:20,164 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-01-27 17:43:20,164 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 271 flow [2023-01-27 17:43:20,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:20,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:20,164 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] [2023-01-27 17:43:20,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 17:43:20,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:20,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:20,165 INFO L85 PathProgramCache]: Analyzing trace with hash 256939556, now seen corresponding path program 1 times [2023-01-27 17:43:20,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:20,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222740949] [2023-01-27 17:43:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:20,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:20,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:43:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222740949] [2023-01-27 17:43:20,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222740949] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:43:20,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:43:20,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 17:43:20,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262525860] [2023-01-27 17:43:20,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:43:20,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 17:43:20,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:43:20,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 17:43:20,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-01-27 17:43:20,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 294 [2023-01-27 17:43:20,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 110.1) internal successors, (1101), 10 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:20,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:43:20,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 294 [2023-01-27 17:43:20,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:43:21,158 INFO L130 PetriNetUnfolder]: 975/1854 cut-off events. [2023-01-27 17:43:21,158 INFO L131 PetriNetUnfolder]: For 1249/1249 co-relation queries the response was YES. [2023-01-27 17:43:21,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4720 conditions, 1854 events. 975/1854 cut-off events. For 1249/1249 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9331 event pairs, 295 based on Foata normal form. 0/1832 useless extension candidates. Maximal degree in co-relation 3621. Up to 1030 conditions per place. [2023-01-27 17:43:21,165 INFO L137 encePairwiseOnDemand]: 285/294 looper letters, 106 selfloop transitions, 10 changer transitions 3/124 dead transitions. [2023-01-27 17:43:21,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 771 flow [2023-01-27 17:43:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 17:43:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 17:43:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 967 transitions. [2023-01-27 17:43:21,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111394557823129 [2023-01-27 17:43:21,168 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 967 transitions. [2023-01-27 17:43:21,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 967 transitions. [2023-01-27 17:43:21,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:43:21,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 967 transitions. [2023-01-27 17:43:21,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:21,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 294.0) internal successors, (2646), 9 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:21,175 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 294.0) internal successors, (2646), 9 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:21,175 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 271 flow. Second operand 8 states and 967 transitions. [2023-01-27 17:43:21,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 124 transitions, 771 flow [2023-01-27 17:43:21,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 124 transitions, 748 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-27 17:43:21,179 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 327 flow [2023-01-27 17:43:21,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=327, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-01-27 17:43:21,180 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 31 predicate places. [2023-01-27 17:43:21,180 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 327 flow [2023-01-27 17:43:21,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.1) internal successors, (1101), 10 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:21,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:21,181 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] [2023-01-27 17:43:21,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 17:43:21,181 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:21,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1974860314, now seen corresponding path program 2 times [2023-01-27 17:43:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:21,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254060677] [2023-01-27 17:43:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:43:21,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:43:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254060677] [2023-01-27 17:43:21,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254060677] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:43:21,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:43:21,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 17:43:21,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32943667] [2023-01-27 17:43:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:43:21,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 17:43:21,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:43:21,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 17:43:21,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-01-27 17:43:21,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 294 [2023-01-27 17:43:21,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 327 flow. Second operand has 10 states, 10 states have (on average 110.1) internal successors, (1101), 10 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:21,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:43:21,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 294 [2023-01-27 17:43:21,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:43:22,165 INFO L130 PetriNetUnfolder]: 1273/2412 cut-off events. [2023-01-27 17:43:22,166 INFO L131 PetriNetUnfolder]: For 1456/1456 co-relation queries the response was YES. [2023-01-27 17:43:22,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6462 conditions, 2412 events. 1273/2412 cut-off events. For 1456/1456 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 12235 event pairs, 356 based on Foata normal form. 0/2383 useless extension candidates. Maximal degree in co-relation 4242. Up to 965 conditions per place. [2023-01-27 17:43:22,177 INFO L137 encePairwiseOnDemand]: 286/294 looper letters, 106 selfloop transitions, 14 changer transitions 3/128 dead transitions. [2023-01-27 17:43:22,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 128 transitions, 843 flow [2023-01-27 17:43:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 17:43:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 17:43:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 967 transitions. [2023-01-27 17:43:22,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111394557823129 [2023-01-27 17:43:22,179 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 967 transitions. [2023-01-27 17:43:22,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 967 transitions. [2023-01-27 17:43:22,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:43:22,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 967 transitions. [2023-01-27 17:43:22,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:22,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 294.0) internal successors, (2646), 9 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:22,183 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 294.0) internal successors, (2646), 9 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:22,183 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 327 flow. Second operand 8 states and 967 transitions. [2023-01-27 17:43:22,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 128 transitions, 843 flow [2023-01-27 17:43:22,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 128 transitions, 843 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 17:43:22,190 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 405 flow [2023-01-27 17:43:22,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=405, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2023-01-27 17:43:22,192 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2023-01-27 17:43:22,192 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 405 flow [2023-01-27 17:43:22,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.1) internal successors, (1101), 10 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:22,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:22,193 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:43:22,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 17:43:22,195 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:22,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:22,195 INFO L85 PathProgramCache]: Analyzing trace with hash 834917319, now seen corresponding path program 1 times [2023-01-27 17:43:22,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:22,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683854400] [2023-01-27 17:43:22,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:22,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:43:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 17:43:22,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:43:22,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683854400] [2023-01-27 17:43:22,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683854400] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:43:22,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:43:22,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 17:43:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319709902] [2023-01-27 17:43:22,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:43:22,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 17:43:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:43:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 17:43:22,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 17:43:22,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 294 [2023-01-27 17:43:22,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:22,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:43:22,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 294 [2023-01-27 17:43:22,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:43:22,568 INFO L130 PetriNetUnfolder]: 1345/2519 cut-off events. [2023-01-27 17:43:22,569 INFO L131 PetriNetUnfolder]: For 1788/1788 co-relation queries the response was YES. [2023-01-27 17:43:22,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7088 conditions, 2519 events. 1345/2519 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12306 event pairs, 540 based on Foata normal form. 16/2505 useless extension candidates. Maximal degree in co-relation 5066. Up to 992 conditions per place. [2023-01-27 17:43:22,580 INFO L137 encePairwiseOnDemand]: 287/294 looper letters, 108 selfloop transitions, 15 changer transitions 0/124 dead transitions. [2023-01-27 17:43:22,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 124 transitions, 897 flow [2023-01-27 17:43:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 17:43:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 17:43:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1026 transitions. [2023-01-27 17:43:22,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2023-01-27 17:43:22,583 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1026 transitions. [2023-01-27 17:43:22,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1026 transitions. [2023-01-27 17:43:22,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:43:22,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1026 transitions. [2023-01-27 17:43:22,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:22,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 294.0) internal successors, (2352), 8 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:22,587 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 294.0) internal successors, (2352), 8 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:22,587 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 405 flow. Second operand 7 states and 1026 transitions. [2023-01-27 17:43:22,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 124 transitions, 897 flow [2023-01-27 17:43:22,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 124 transitions, 873 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-27 17:43:22,596 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 515 flow [2023-01-27 17:43:22,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=294, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=515, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2023-01-27 17:43:22,597 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 46 predicate places. [2023-01-27 17:43:22,597 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 515 flow [2023-01-27 17:43:22,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:43:22,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:43:22,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:43:22,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 17:43:22,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:43:22,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:43:22,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1564096500, now seen corresponding path program 1 times [2023-01-27 17:43:22,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:43:22,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999175626] [2023-01-27 17:43:22,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:43:22,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:43:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:43:22,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-27 17:43:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 17:43:22,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-27 17:43:22,665 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-27 17:43:22,666 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-27 17:43:22,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-01-27 17:43:22,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-27 17:43:22,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-27 17:43:22,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-27 17:43:22,667 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-27 17:43:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 17:43:22,668 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:43:22,671 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 17:43:22,671 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 17:43:22,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 05:43:22 BasicIcfg [2023-01-27 17:43:22,719 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 17:43:22,719 INFO L158 Benchmark]: Toolchain (without parser) took 8747.04ms. Allocated memory was 497.0MB in the beginning and 597.7MB in the end (delta: 100.7MB). Free memory was 446.2MB in the beginning and 465.4MB in the end (delta: -19.1MB). Peak memory consumption was 84.2MB. Max. memory is 16.0GB. [2023-01-27 17:43:22,719 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 292.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 17:43:22,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.13ms. Allocated memory is still 497.0MB. Free memory was 446.2MB in the beginning and 417.0MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-27 17:43:22,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.10ms. Allocated memory is still 497.0MB. Free memory was 417.0MB in the beginning and 414.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:43:22,720 INFO L158 Benchmark]: Boogie Preprocessor took 28.48ms. Allocated memory is still 497.0MB. Free memory was 414.5MB in the beginning and 412.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:43:22,720 INFO L158 Benchmark]: RCFGBuilder took 371.75ms. Allocated memory is still 497.0MB. Free memory was 412.4MB in the beginning and 395.0MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 17:43:22,720 INFO L158 Benchmark]: TraceAbstraction took 7913.38ms. Allocated memory was 497.0MB in the beginning and 597.7MB in the end (delta: 100.7MB). Free memory was 394.3MB in the beginning and 465.4MB in the end (delta: -71.1MB). Peak memory consumption was 31.8MB. Max. memory is 16.0GB. [2023-01-27 17:43:22,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 292.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 379.13ms. Allocated memory is still 497.0MB. Free memory was 446.2MB in the beginning and 417.0MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.10ms. Allocated memory is still 497.0MB. Free memory was 417.0MB in the beginning and 414.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.48ms. Allocated memory is still 497.0MB. Free memory was 414.5MB in the beginning and 412.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 371.75ms. Allocated memory is still 497.0MB. Free memory was 412.4MB in the beginning and 395.0MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 7913.38ms. Allocated memory was 497.0MB in the beginning and 597.7MB in the end (delta: 100.7MB). Free memory was 394.3MB in the beginning and 465.4MB in the end (delta: -71.1MB). Peak memory consumption was 31.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 144 PlacesBefore, 35 PlacesAfterwards, 147 TransitionsBefore, 33 TransitionsAfterwards, 7334 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 86 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 19 ConcurrentYvCompositions, 5 ChoiceCompositions, 136 TotalNumberOfCompositions, 9508 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7052, independent: 6870, independent conditional: 0, independent unconditional: 6870, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4045, independent: 3996, independent conditional: 0, independent unconditional: 3996, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7052, independent: 2874, independent conditional: 0, independent unconditional: 2874, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 4045, unknown conditional: 0, unknown unconditional: 4045] , Statistics on independence cache: Total cache size (in pairs): 167, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 941]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(800)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1020] 0 pthread_t id1, id2; [L1022] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={5:0}, m={4:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=9, top=0] [L989] 1 int i; [L990] 1 unsigned int tmp; [L991] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1023] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1={7:0}, id2={5:0}, m={4:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=10, top=0] [L991] COND TRUE 1 i<(800) [L994] 1 tmp = __VERIFIER_nondet_uint() [L995] CALL 1 assume_abort_if_not(tmp < (800)) [L1005] 2 int i; [L1006] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L23] COND FALSE 1 !(!cond) [L995] RET 1 assume_abort_if_not(tmp < (800)) [L996] CALL, EXPR 1 push(arr,tmp) [L961] COND FALSE 1 !(top==(800)) [L968] CALL, EXPR 1 get_top() [L953] 1 return top; [L968] RET, EXPR 1 get_top() [L968] 1 stack[get_top()] = x [L969] CALL 1 inc_top() [L945] 1 top++ [L969] RET 1 inc_top() [L971] 1 return 0; [L996] RET, EXPR 1 push(arr,tmp) [L996] COND FALSE 1 !(push(arr,tmp)==(-1)) [L998] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=799, top=1] [L991] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, tmp=799, top=1] [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; [L975] RET, EXPR 2 get_top() [L975] COND FALSE 2 !(get_top()==0) [L982] CALL 2 dec_top() [L949] 2 top-- VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L982] RET 2 dec_top() [L983] CALL, EXPR 2 get_top() [L953] 2 return top; [L983] RET, EXPR 2 get_top() [L983] EXPR 2 stack[get_top()] [L983] 2 return stack[get_top()]; [L1011] RET, EXPR 2 pop(arr) [L1011] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1006] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L1011] CALL, EXPR 2 pop(arr) [L975] CALL, EXPR 2 get_top() [L953] 2 return top; [L975] RET, EXPR 2 get_top() [L975] COND TRUE 2 get_top()==0 [L978] 2 return (-2); [L1011] RET, EXPR 2 pop(arr) [L1011] COND TRUE 2 !(pop(arr)!=(-2)) [L1012] CALL 2 error() [L941] 2 reach_error() VAL [arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1022]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 941]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 250 locations, 6 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: 7.7s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 472 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 472 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1668 IncrementalHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 0 mSDtfsCounter, 1668 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=515occurred in iteration=9, InterpolantAutomatonStates: 51, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 1568 SizeOfPredicates, 1 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 6/12 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 proved your program to be incorrect! [2023-01-27 17:43:22,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...