./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22f5e9b8cea3fb6414e4865b1626afaeb55342d9f0f16512cd01a49134cc1f25 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:10:58,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:10:58,613 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:10:58,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:10:58,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:10:58,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:10:58,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:10:58,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:10:58,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:10:58,664 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:10:58,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:10:58,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:10:58,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:10:58,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:10:58,668 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:10:58,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:10:58,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:10:58,670 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:10:58,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:10:58,671 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:10:58,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:10:58,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:10:58,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:10:58,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:10:58,677 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:10:58,677 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:10:58,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:10:58,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:10:58,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:10:58,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:10:58,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:10:58,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:10:58,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:10:58,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:10:58,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:10:58,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:10:58,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:10:58,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:10:58,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:10:58,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:10:58,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:10:58,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:10:58,684 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f5e9b8cea3fb6414e4865b1626afaeb55342d9f0f16512cd01a49134cc1f25 [2024-10-24 12:10:58,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:10:59,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:10:59,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:10:59,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:10:59,015 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:10:59,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i [2024-10-24 12:11:00,663 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:11:00,955 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:11:00,957 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i [2024-10-24 12:11:00,976 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a012f8112/98b63aaec9cf4f76bb520d3791865bf4/FLAG94dd94dc6 [2024-10-24 12:11:00,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a012f8112/98b63aaec9cf4f76bb520d3791865bf4 [2024-10-24 12:11:00,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:11:00,997 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:11:00,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:11:00,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:11:01,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:11:01,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:11:00" (1/1) ... [2024-10-24 12:11:01,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3095ec26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01, skipping insertion in model container [2024-10-24 12:11:01,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:11:00" (1/1) ... [2024-10-24 12:11:01,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:11:01,404 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i[31350,31363] [2024-10-24 12:11:01,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:11:01,455 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:11:01,520 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/25_stack_longer-1.i[31350,31363] [2024-10-24 12:11:01,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:11:01,583 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:11:01,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01 WrapperNode [2024-10-24 12:11:01,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:11:01,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:11:01,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:11:01,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:11:01,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,635 INFO L138 Inliner]: procedures = 171, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 133 [2024-10-24 12:11:01,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:11:01,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:11:01,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:11:01,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:11:01,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,658 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,681 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-10-24 12:11:01,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:11:01,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:11:01,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:11:01,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:11:01,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (1/1) ... [2024-10-24 12:11:01,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:11:01,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:11:01,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 12:11:01,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 12:11:01,816 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-24 12:11:01,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-24 12:11:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 12:11:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:11:01,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:11:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:11:01,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:11:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:11:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:11:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 12:11:01,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:11:01,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:11:01,824 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:11:02,019 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:11:02,021 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:11:02,338 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:11:02,339 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:11:02,596 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:11:02,596 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 12:11:02,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:11:02 BoogieIcfgContainer [2024-10-24 12:11:02,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:11:02,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:11:02,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:11:02,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:11:02,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:11:00" (1/3) ... [2024-10-24 12:11:02,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9490d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:11:02, skipping insertion in model container [2024-10-24 12:11:02,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:11:01" (2/3) ... [2024-10-24 12:11:02,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9490d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:11:02, skipping insertion in model container [2024-10-24 12:11:02,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:11:02" (3/3) ... [2024-10-24 12:11:02,611 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1.i [2024-10-24 12:11:02,632 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:11:02,633 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:11:02,633 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:11:02,701 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:11:02,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 35 transitions, 74 flow [2024-10-24 12:11:02,790 INFO L124 PetriNetUnfolderBase]: 4/37 cut-off events. [2024-10-24 12:11:02,790 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:11:02,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 4/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-10-24 12:11:02,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 35 transitions, 74 flow [2024-10-24 12:11:02,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 35 transitions, 74 flow [2024-10-24 12:11:02,811 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:11:02,818 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5016f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:11:02,818 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-24 12:11:02,823 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:11:02,824 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-24 12:11:02,824 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 12:11:02,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:11:02,825 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-24 12:11:02,826 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:11:02,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:11:02,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1797391039, now seen corresponding path program 1 times [2024-10-24 12:11:02,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:11:02,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585733815] [2024-10-24 12:11:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:11:02,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:11:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:02,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 12:11:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:03,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 12:11:03,054 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 12:11:03,056 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-10-24 12:11:03,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-10-24 12:11:03,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-10-24 12:11:03,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:11:03,061 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 12:11:03,066 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 12:11:03,066 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 12:11:03,131 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:11:03,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 65 transitions, 140 flow [2024-10-24 12:11:03,152 INFO L124 PetriNetUnfolderBase]: 8/70 cut-off events. [2024-10-24 12:11:03,152 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:11:03,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 8/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2024-10-24 12:11:03,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 65 transitions, 140 flow [2024-10-24 12:11:03,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 65 transitions, 140 flow [2024-10-24 12:11:03,163 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:11:03,168 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5016f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:11:03,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:11:03,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:11:03,187 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2024-10-24 12:11:03,188 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 12:11:03,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:11:03,188 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-24 12:11:03,189 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-24 12:11:03,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:11:03,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1175873023, now seen corresponding path program 1 times [2024-10-24 12:11:03,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:11:03,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923282403] [2024-10-24 12:11:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:11:03,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:11:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:03,220 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 12:11:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:03,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 12:11:03,271 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 12:11:03,271 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-24 12:11:03,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-10-24 12:11:03,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-10-24 12:11:03,272 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-10-24 12:11:03,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:11:03,273 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 12:11:03,274 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 12:11:03,275 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 12:11:03,352 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:11:03,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 95 transitions, 208 flow [2024-10-24 12:11:03,406 INFO L124 PetriNetUnfolderBase]: 12/103 cut-off events. [2024-10-24 12:11:03,407 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 12:11:03,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 12/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 270 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2024-10-24 12:11:03,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 95 transitions, 208 flow [2024-10-24 12:11:03,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 95 transitions, 208 flow [2024-10-24 12:11:03,415 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:11:03,417 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5016f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:11:03,418 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-24 12:11:03,469 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:11:03,469 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-10-24 12:11:03,469 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 12:11:03,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:11:03,470 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-24 12:11:03,470 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-10-24 12:11:03,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:11:03,471 INFO L85 PathProgramCache]: Analyzing trace with hash 535307744, now seen corresponding path program 1 times [2024-10-24 12:11:03,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:11:03,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493021253] [2024-10-24 12:11:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:11:03,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:11:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:03,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 12:11:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:03,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 12:11:03,577 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 12:11:03,577 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-24 12:11:03,581 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-10-24 12:11:03,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-10-24 12:11:03,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-10-24 12:11:03,583 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-10-24 12:11:03,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:11:03,584 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 12:11:03,585 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 12:11:03,585 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-24 12:11:03,698 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:11:03,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 125 transitions, 278 flow [2024-10-24 12:11:03,755 INFO L124 PetriNetUnfolderBase]: 16/136 cut-off events. [2024-10-24 12:11:03,755 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 12:11:03,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 136 events. 16/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 439 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2024-10-24 12:11:03,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 125 transitions, 278 flow [2024-10-24 12:11:03,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 125 transitions, 278 flow [2024-10-24 12:11:03,768 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:11:03,770 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5016f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:11:03,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-24 12:11:03,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:11:03,787 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-24 12:11:03,787 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 12:11:03,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:11:03,787 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-10-24 12:11:03,788 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-10-24 12:11:03,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:11:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash -477871338, now seen corresponding path program 1 times [2024-10-24 12:11:03,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:11:03,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854682993] [2024-10-24 12:11:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:11:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:11:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:03,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 12:11:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:03,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 12:11:03,860 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 12:11:03,860 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-24 12:11:03,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-10-24 12:11:03,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-10-24 12:11:03,861 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-10-24 12:11:03,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-10-24 12:11:03,862 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-10-24 12:11:03,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:11:03,862 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 12:11:03,863 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 12:11:03,863 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-24 12:11:03,957 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:11:03,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 155 transitions, 350 flow [2024-10-24 12:11:04,017 INFO L124 PetriNetUnfolderBase]: 20/169 cut-off events. [2024-10-24 12:11:04,017 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 12:11:04,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 169 events. 20/169 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 587 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2024-10-24 12:11:04,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 155 transitions, 350 flow [2024-10-24 12:11:04,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 155 transitions, 350 flow [2024-10-24 12:11:04,034 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:11:04,035 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5016f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:11:04,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-24 12:11:04,059 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:11:04,059 INFO L124 PetriNetUnfolderBase]: 7/88 cut-off events. [2024-10-24 12:11:04,059 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 12:11:04,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:11:04,060 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:11:04,061 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-24 12:11:04,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:11:04,061 INFO L85 PathProgramCache]: Analyzing trace with hash 357078271, now seen corresponding path program 1 times [2024-10-24 12:11:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:11:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218917887] [2024-10-24 12:11:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:11:04,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:11:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:04,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 12:11:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 12:11:04,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 12:11:04,173 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 12:11:04,174 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-24 12:11:04,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-10-24 12:11:04,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-10-24 12:11:04,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-10-24 12:11:04,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-10-24 12:11:04,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-10-24 12:11:04,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-10-24 12:11:04,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:11:04,175 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 12:11:04,177 WARN L239 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 12:11:04,177 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-24 12:11:04,274 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 12:11:04,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 185 transitions, 424 flow [2024-10-24 12:11:04,337 INFO L124 PetriNetUnfolderBase]: 24/202 cut-off events. [2024-10-24 12:11:04,337 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-24 12:11:04,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 202 events. 24/202 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 761 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 194. Up to 7 conditions per place. [2024-10-24 12:11:04,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 185 transitions, 424 flow [2024-10-24 12:11:04,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 185 transitions, 424 flow [2024-10-24 12:11:04,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:11:04,348 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@5016f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:11:04,348 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-24 12:11:04,362 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:11:04,363 INFO L124 PetriNetUnfolderBase]: 7/90 cut-off events. [2024-10-24 12:11:04,363 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-24 12:11:04,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:11:04,364 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:11:04,364 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-24 12:11:04,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:11:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash -828296493, now seen corresponding path program 1 times [2024-10-24 12:11:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:11:04,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29924152] [2024-10-24 12:11:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:11:04,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:11:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:11:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:11:04,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:11:04,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29924152] [2024-10-24 12:11:04,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29924152] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:11:04,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:11:04,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:11:04,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459238842] [2024-10-24 12:11:04,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:11:04,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:11:04,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:11:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:11:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:11:04,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 185 [2024-10-24 12:11:04,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 185 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:11:04,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:11:04,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 185 [2024-10-24 12:11:04,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand