./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:16:06,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:16:06,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:16:06,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:16:06,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:16:06,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:16:06,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:16:06,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:16:06,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:16:06,621 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:16:06,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:16:06,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:16:06,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:16:06,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:16:06,622 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:16:06,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:16:06,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:16:06,623 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:16:06,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:16:06,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:16:06,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:16:06,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:16:06,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:16:06,625 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:16:06,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:16:06,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:16:06,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:16:06,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:16:06,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:16:06,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:16:06,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:16:06,626 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c [2025-02-06 04:16:06,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:16:06,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:16:06,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:16:06,905 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:16:06,906 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:16:06,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-02-06 04:16:08,140 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6c47a018b/ef83fb002723439bb55aec24c3ca78e7/FLAGb7f5ec66f [2025-02-06 04:16:08,467 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:16:08,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-02-06 04:16:08,491 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6c47a018b/ef83fb002723439bb55aec24c3ca78e7/FLAGb7f5ec66f [2025-02-06 04:16:08,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6c47a018b/ef83fb002723439bb55aec24c3ca78e7 [2025-02-06 04:16:08,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:16:08,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:16:08,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:16:08,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:16:08,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:16:08,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:08,522 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3798012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08, skipping insertion in model container [2025-02-06 04:16:08,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:08,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:16:08,878 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30837,30850] [2025-02-06 04:16:08,884 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31185,31198] [2025-02-06 04:16:08,887 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31448,31461] [2025-02-06 04:16:08,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:16:08,899 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:16:08,940 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30837,30850] [2025-02-06 04:16:08,941 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31185,31198] [2025-02-06 04:16:08,942 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31448,31461] [2025-02-06 04:16:08,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:16:08,984 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:16:08,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08 WrapperNode [2025-02-06 04:16:08,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:16:08,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:16:08,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:16:08,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:16:08,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,035 INFO L138 Inliner]: procedures = 178, calls = 35, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 135 [2025-02-06 04:16:09,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:16:09,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:16:09,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:16:09,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:16:09,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,046 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,064 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 6, 3]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 4 writes are split as follows [0, 2, 2]. [2025-02-06 04:16:09,065 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,071 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,077 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:16:09,078 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:16:09,078 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:16:09,078 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:16:09,079 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (1/1) ... [2025-02-06 04:16:09,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:16:09,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:16:09,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:16:09,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:16:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:16:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:16:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 04:16:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 04:16:09,136 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 04:16:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:16:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:16:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 04:16:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:16:09,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:16:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 04:16:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 04:16:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:16:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:16:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 04:16:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:16:09,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:16:09,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:16:09,138 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:16:09,277 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:16:09,279 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:16:09,526 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L728: havoc PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset; [2025-02-06 04:16:09,528 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L728-1: SUMMARY for call ULTIMATE.dealloc(PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset); srcloc: null [2025-02-06 04:16:09,565 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:16:09,567 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:16:09,729 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:16:09,730 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:16:09,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:16:09 BoogieIcfgContainer [2025-02-06 04:16:09,731 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:16:09,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:16:09,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:16:09,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:16:09,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:16:08" (1/3) ... [2025-02-06 04:16:09,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c892ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:16:09, skipping insertion in model container [2025-02-06 04:16:09,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:16:08" (2/3) ... [2025-02-06 04:16:09,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c892ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:16:09, skipping insertion in model container [2025-02-06 04:16:09,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:16:09" (3/3) ... [2025-02-06 04:16:09,741 INFO L128 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2025-02-06 04:16:09,755 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:16:09,756 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 08_rand_cas.i that has 2 procedures, 39 locations, 1 initial locations, 4 loop locations, and 3 error locations. [2025-02-06 04:16:09,757 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:16:09,823 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:16:09,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 49 transitions, 102 flow [2025-02-06 04:16:09,892 INFO L124 PetriNetUnfolderBase]: 10/51 cut-off events. [2025-02-06 04:16:09,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:16:09,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 10/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 46. Up to 3 conditions per place. [2025-02-06 04:16:09,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 49 transitions, 102 flow [2025-02-06 04:16:09,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 49 transitions, 102 flow [2025-02-06 04:16:09,918 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:16:09,933 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;@2d8bf37d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:16:09,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-06 04:16:09,939 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:16:09,939 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-06 04:16:09,939 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:16:09,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:16:09,940 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 04:16:09,941 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 04:16:09,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:16:09,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1773705617, now seen corresponding path program 1 times [2025-02-06 04:16:09,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:16:09,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30631015] [2025-02-06 04:16:09,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:16:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:16:10,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 04:16:10,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 04:16:10,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:16:10,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:16:10,071 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 04:16:10,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 04:16:10,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 04:16:10,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:16:10,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:16:10,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 04:16:10,117 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 04:16:10,118 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2025-02-06 04:16:10,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-02-06 04:16:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2025-02-06 04:16:10,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2025-02-06 04:16:10,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2025-02-06 04:16:10,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-02-06 04:16:10,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-02-06 04:16:10,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:16:10,124 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 04:16:10,128 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 04:16:10,129 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 04:16:10,191 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:16:10,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 93 transitions, 196 flow [2025-02-06 04:16:10,241 INFO L124 PetriNetUnfolderBase]: 20/98 cut-off events. [2025-02-06 04:16:10,241 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:16:10,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 98 events. 20/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 284 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 89. Up to 3 conditions per place. [2025-02-06 04:16:10,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 93 transitions, 196 flow [2025-02-06 04:16:10,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 93 transitions, 196 flow [2025-02-06 04:16:10,250 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:16:10,251 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;@2d8bf37d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:16:10,251 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-02-06 04:16:10,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:16:10,258 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2025-02-06 04:16:10,258 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:16:10,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:16:10,259 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-02-06 04:16:10,259 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2025-02-06 04:16:10,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:16:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash 958809537, now seen corresponding path program 1 times [2025-02-06 04:16:10,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:16:10,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098817979] [2025-02-06 04:16:10,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:16:10,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:16:10,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:16:10,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:16:10,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:16:10,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:16:10,281 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 04:16:10,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:16:10,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:16:10,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:16:10,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:16:10,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 04:16:10,300 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 04:16:10,300 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-02-06 04:16:10,300 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2025-02-06 04:16:10,300 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2025-02-06 04:16:10,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2025-02-06 04:16:10,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2025-02-06 04:16:10,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2025-02-06 04:16:10,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2025-02-06 04:16:10,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2025-02-06 04:16:10,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2025-02-06 04:16:10,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2025-02-06 04:16:10,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:16:10,302 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 04:16:10,302 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 04:16:10,302 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 04:16:10,365 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:16:10,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 137 transitions, 292 flow [2025-02-06 04:16:10,419 INFO L124 PetriNetUnfolderBase]: 30/145 cut-off events. [2025-02-06 04:16:10,419 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 04:16:10,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 145 events. 30/145 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 502 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 132. Up to 4 conditions per place. [2025-02-06 04:16:10,424 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 137 transitions, 292 flow [2025-02-06 04:16:10,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 137 transitions, 292 flow [2025-02-06 04:16:10,429 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:16:10,431 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;@2d8bf37d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:16:10,432 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-06 04:16:10,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:16:10,443 INFO L124 PetriNetUnfolderBase]: 4/52 cut-off events. [2025-02-06 04:16:10,443 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 04:16:10,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:16:10,443 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-02-06 04:16:10,443 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2025-02-06 04:16:10,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:16:10,444 INFO L85 PathProgramCache]: Analyzing trace with hash 815293936, now seen corresponding path program 1 times [2025-02-06 04:16:10,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:16:10,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259645791] [2025-02-06 04:16:10,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:16:10,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:16:10,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:16:10,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:16:10,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:16:10,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:16:10,477 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 04:16:10,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:16:10,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:16:10,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:16:10,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 04:16:10,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 04:16:10,513 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 04:16:10,513 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2025-02-06 04:16:10,514 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2025-02-06 04:16:10,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:16:10,515 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 04:16:10,515 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 04:16:10,515 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-06 04:16:10,589 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:16:10,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 181 transitions, 390 flow [2025-02-06 04:16:10,664 INFO L124 PetriNetUnfolderBase]: 40/192 cut-off events. [2025-02-06 04:16:10,665 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-06 04:16:10,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 192 events. 40/192 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 752 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 175. Up to 5 conditions per place. [2025-02-06 04:16:10,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 181 transitions, 390 flow [2025-02-06 04:16:10,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 181 transitions, 390 flow [2025-02-06 04:16:10,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:16:10,672 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;@2d8bf37d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:16:10,672 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-02-06 04:16:10,680 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:16:10,680 INFO L124 PetriNetUnfolderBase]: 6/59 cut-off events. [2025-02-06 04:16:10,680 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-06 04:16:10,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:16:10,680 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:16:10,680 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-06 04:16:10,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:16:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1726335354, now seen corresponding path program 1 times [2025-02-06 04:16:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:16:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988919646] [2025-02-06 04:16:10,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:16:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:16:10,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 04:16:10,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:16:10,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:16:10,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:16:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:16:10,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:16:10,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988919646] [2025-02-06 04:16:10,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988919646] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:16:10,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:16:10,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:16:10,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301486243] [2025-02-06 04:16:10,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:16:10,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:16:10,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:16:10,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:16:10,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:16:10,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 181 [2025-02-06 04:16:10,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 181 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:16:10,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:16:10,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 181 [2025-02-06 04:16:10,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand