./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/08_rand_cas.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 111430583c5cad5728291a83d9964586feec908088fcc502d1f1ab24d409725c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:20:04,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:20:04,991 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:20:04,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:20:04,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:20:05,018 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:20:05,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:20:05,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:20:05,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:20:05,020 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:20:05,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:20:05,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:20:05,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:20:05,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:20:05,021 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:20:05,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:20:05,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:20:05,021 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:20:05,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:20:05,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:20:05,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:20:05,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:20:05,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:20:05,023 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:20:05,023 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:20:05,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:20:05,023 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:20:05,023 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:20:05,023 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:20:05,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:20:05,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:20:05,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:20:05,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:20:05,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:20:05,024 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/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 [2025-03-17 06:20:05,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:20:05,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:20:05,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:20:05,244 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:20:05,245 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:20:05,246 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-03-17 06:20:06,352 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0fe2c0d/61a8f2118ff44e62a781123a6126778c/FLAG5021fd6bb [2025-03-17 06:20:06,642 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:20:06,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2025-03-17 06:20:06,658 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0fe2c0d/61a8f2118ff44e62a781123a6126778c/FLAG5021fd6bb [2025-03-17 06:20:06,924 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0fe2c0d/61a8f2118ff44e62a781123a6126778c [2025-03-17 06:20:06,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:20:06,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:20:06,929 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:20:06,929 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:20:06,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:20:06,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:20:06" (1/1) ... [2025-03-17 06:20:06,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@279c1bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:06, skipping insertion in model container [2025-03-17 06:20:06,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:20:06" (1/1) ... [2025-03-17 06:20:06,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:20:07,184 WARN L250 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/08_rand_cas.i[30837,30850] [2025-03-17 06:20:07,188 WARN L250 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/08_rand_cas.i[31185,31198] [2025-03-17 06:20:07,189 WARN L250 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/08_rand_cas.i[31448,31461] [2025-03-17 06:20:07,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:20:07,199 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:20:07,237 WARN L250 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/08_rand_cas.i[30837,30850] [2025-03-17 06:20:07,239 WARN L250 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/08_rand_cas.i[31185,31198] [2025-03-17 06:20:07,241 WARN L250 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/08_rand_cas.i[31448,31461] [2025-03-17 06:20:07,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:20:07,266 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:20:07,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07 WrapperNode [2025-03-17 06:20:07,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:20:07,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:20:07,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:20:07,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:20:07,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,280 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,297 INFO L138 Inliner]: procedures = 178, calls = 35, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 135 [2025-03-17 06:20:07,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:20:07,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:20:07,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:20:07,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:20:07,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,316 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]. [2025-03-17 06:20:07,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,321 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:20:07,326 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:20:07,326 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:20:07,326 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:20:07,326 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (1/1) ... [2025-03-17 06:20:07,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:20:07,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:20:07,351 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) [2025-03-17 06:20:07,353 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 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 06:20:07,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 06:20:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:20:07,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:20:07,370 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:20:07,469 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:20:07,470 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:20:07,644 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L728: havoc PseudoRandomUsingAtomic_nextInt_~#casret~0#1.base, PseudoRandomUsingAtomic_nextInt_~#casret~0#1.offset; [2025-03-17 06:20:07,644 INFO L1322 $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 [2025-03-17 06:20:07,666 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:20:07,666 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:20:07,780 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:20:07,780 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:20:07,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:20:07 BoogieIcfgContainer [2025-03-17 06:20:07,780 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:20:07,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:20:07,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:20:07,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:20:07,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:20:06" (1/3) ... [2025-03-17 06:20:07,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be2b1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:20:07, skipping insertion in model container [2025-03-17 06:20:07,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:20:07" (2/3) ... [2025-03-17 06:20:07,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be2b1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:20:07, skipping insertion in model container [2025-03-17 06:20:07,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:20:07" (3/3) ... [2025-03-17 06:20:07,787 INFO L128 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2025-03-17 06:20:07,796 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:20:07,798 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 08_rand_cas.i that has 2 procedures, 37 locations, 1 initial locations, 4 loop locations, and 3 error locations. [2025-03-17 06:20:07,798 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:20:07,843 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:20:07,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 47 transitions, 98 flow [2025-03-17 06:20:07,891 INFO L124 PetriNetUnfolderBase]: 10/49 cut-off events. [2025-03-17 06:20:07,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:20:07,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 10/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 44. Up to 3 conditions per place. [2025-03-17 06:20:07,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 47 transitions, 98 flow [2025-03-17 06:20:07,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 47 transitions, 98 flow [2025-03-17 06:20:07,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:20:07,913 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;@70c5391a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:20:07,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-17 06:20:07,919 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:20:07,919 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 06:20:07,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 06:20:07,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:20:07,920 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 06:20:07,920 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)] === [2025-03-17 06:20:07,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:20:07,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1424216626, now seen corresponding path program 1 times [2025-03-17 06:20:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:20:07,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638699146] [2025-03-17 06:20:07,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:20:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:20:08,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 06:20:08,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 06:20:08,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:08,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:08,042 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 06:20:08,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 06:20:08,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 06:20:08,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:08,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:08,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 06:20:08,078 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 06:20:08,079 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2025-03-17 06:20:08,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-03-17 06:20:08,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2025-03-17 06:20:08,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2025-03-17 06:20:08,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2025-03-17 06:20:08,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2025-03-17 06:20:08,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-03-17 06:20:08,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:20:08,082 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 06:20:08,084 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 06:20:08,084 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 06:20:08,127 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:20:08,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 89 transitions, 188 flow [2025-03-17 06:20:08,155 INFO L124 PetriNetUnfolderBase]: 20/94 cut-off events. [2025-03-17 06:20:08,156 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 06:20:08,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 94 events. 20/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 258 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2025-03-17 06:20:08,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 89 transitions, 188 flow [2025-03-17 06:20:08,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 89 transitions, 188 flow [2025-03-17 06:20:08,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:20:08,160 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;@70c5391a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:20:08,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-17 06:20:08,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:20:08,169 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2025-03-17 06:20:08,169 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 06:20:08,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:20:08,169 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-17 06:20:08,169 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)] === [2025-03-17 06:20:08,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:20:08,170 INFO L85 PathProgramCache]: Analyzing trace with hash -556878296, now seen corresponding path program 1 times [2025-03-17 06:20:08,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:20:08,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39950945] [2025-03-17 06:20:08,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:20:08,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:20:08,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 06:20:08,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 06:20:08,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:08,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:08,198 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 06:20:08,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 06:20:08,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 06:20:08,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:08,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:08,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 06:20:08,212 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2025-03-17 06:20:08,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2025-03-17 06:20:08,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:20:08,213 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 06:20:08,213 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 06:20:08,213 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 06:20:08,260 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:20:08,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 131 transitions, 280 flow [2025-03-17 06:20:08,300 INFO L124 PetriNetUnfolderBase]: 30/139 cut-off events. [2025-03-17 06:20:08,300 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 06:20:08,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 30/139 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 469 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2025-03-17 06:20:08,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 131 transitions, 280 flow [2025-03-17 06:20:08,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 131 transitions, 280 flow [2025-03-17 06:20:08,307 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:20:08,308 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;@70c5391a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:20:08,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-17 06:20:08,313 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:20:08,314 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2025-03-17 06:20:08,314 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 06:20:08,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:20:08,314 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:20:08,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2025-03-17 06:20:08,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:20:08,315 INFO L85 PathProgramCache]: Analyzing trace with hash -853772217, now seen corresponding path program 1 times [2025-03-17 06:20:08,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:20:08,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761978558] [2025-03-17 06:20:08,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:20:08,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:20:08,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 06:20:08,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 06:20:08,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:08,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:20:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:20:08,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:20:08,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761978558] [2025-03-17 06:20:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761978558] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:20:08,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:20:08,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:20:08,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954076781] [2025-03-17 06:20:08,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:20:08,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:20:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:20:08,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:20:08,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:20:08,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 131 [2025-03-17 06:20:08,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 131 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2025-03-17 06:20:08,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:20:08,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 131 [2025-03-17 06:20:08,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:20:14,886 INFO L124 PetriNetUnfolderBase]: 65866/112901 cut-off events. [2025-03-17 06:20:14,886 INFO L125 PetriNetUnfolderBase]: For 2612/2612 co-relation queries the response was YES. [2025-03-17 06:20:15,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199946 conditions, 112901 events. 65866/112901 cut-off events. For 2612/2612 co-relation queries the response was YES. Maximal size of possible extension queue 3499. Compared 1094041 event pairs, 27819 based on Foata normal form. 11709/108821 useless extension candidates. Maximal degree in co-relation 50220. Up to 50417 conditions per place. [2025-03-17 06:20:15,500 INFO L140 encePairwiseOnDemand]: 102/131 looper letters, 172 selfloop transitions, 15 changer transitions 0/241 dead transitions. [2025-03-17 06:20:15,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 241 transitions, 905 flow [2025-03-17 06:20:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:20:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 06:20:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 523 transitions. [2025-03-17 06:20:15,510 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7984732824427481 [2025-03-17 06:20:15,511 INFO L175 Difference]: Start difference. First operand has 108 places, 131 transitions, 280 flow. Second operand 5 states and 523 transitions. [2025-03-17 06:20:15,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 241 transitions, 905 flow [2025-03-17 06:20:15,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 241 transitions, 897 flow, removed 4 selfloop flow, removed 0 redundant places. [2025-03-17 06:20:15,524 INFO L231 Difference]: Finished difference. Result has 115 places, 126 transitions, 358 flow [2025-03-17 06:20:15,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=115, PETRI_TRANSITIONS=126} [2025-03-17 06:20:15,529 INFO L279 CegarLoopForPetriNet]: 108 programPoint places, 7 predicate places. [2025-03-17 06:20:15,529 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 126 transitions, 358 flow [2025-03-17 06:20:15,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 4 states have internal predecessors, (225), 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) [2025-03-17 06:20:15,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:20:15,530 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-03-17 06:20:15,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 06:20:15,530 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2025-03-17 06:20:15,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:20:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash 344856721, now seen corresponding path program 1 times [2025-03-17 06:20:15,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:20:15,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424282039] [2025-03-17 06:20:15,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:20:15,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:20:15,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 06:20:15,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 06:20:15,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:15,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:15,557 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 06:20:15,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 06:20:15,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 06:20:15,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:15,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 06:20:15,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 06:20:15,572 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 06:20:15,573 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-17 06:20:15,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2025-03-17 06:20:15,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2025-03-17 06:20:15,575 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2025-03-17 06:20:15,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:20:15,575 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 06:20:15,575 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 06:20:15,575 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-17 06:20:15,622 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 06:20:15,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 173 transitions, 374 flow [2025-03-17 06:20:15,642 INFO L124 PetriNetUnfolderBase]: 40/184 cut-off events. [2025-03-17 06:20:15,642 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 06:20:15,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 184 events. 40/184 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 698 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 167. Up to 5 conditions per place. [2025-03-17 06:20:15,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 173 transitions, 374 flow [2025-03-17 06:20:15,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 173 transitions, 374 flow [2025-03-17 06:20:15,648 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:20:15,648 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;@70c5391a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:20:15,648 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-03-17 06:20:15,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:20:15,654 INFO L124 PetriNetUnfolderBase]: 3/47 cut-off events. [2025-03-17 06:20:15,654 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-03-17 06:20:15,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:20:15,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:20:15,654 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)] === [2025-03-17 06:20:15,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:20:15,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1297722279, now seen corresponding path program 1 times [2025-03-17 06:20:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:20:15,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815142145] [2025-03-17 06:20:15,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:20:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:20:15,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 06:20:15,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 06:20:15,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:20:15,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:20:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:20:15,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:20:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815142145] [2025-03-17 06:20:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815142145] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:20:15,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:20:15,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:20:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766032050] [2025-03-17 06:20:15,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:20:15,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:20:15,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:20:15,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:20:15,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:20:15,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 173 [2025-03-17 06:20:15,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 173 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2025-03-17 06:20:15,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:20:15,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 173 [2025-03-17 06:20:15,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand