./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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/weaver/popl20-bad-commit-2.wvr-bad.c -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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:42:51,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:42:51,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:42:51,118 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:42:51,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:42:51,142 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:42:51,143 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:42:51,143 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:42:51,144 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:42:51,144 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:42:51,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:42:51,145 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:42:51,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:42:51,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:42:51,145 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:42:51,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:42:51,146 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:42:51,147 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:42:51,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:42:51,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:42:51,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:42:51,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:42:51,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:42:51,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:42:51,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:42:51,148 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:42:51,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:42:51,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:42:51,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:42:51,148 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:42:51,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:42:51,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:42:51,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:42:51,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:42:51,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:42:51,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:42:51,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:42:51,149 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 -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2025-01-09 16:42:51,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:42:51,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:42:51,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:42:51,372 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:42:51,372 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:42:51,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-01-09 16:42:52,513 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86096040a/b15e3f6027504bf6ab159e81011b417a/FLAGdb601d1eb [2025-01-09 16:42:52,807 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:42:52,807 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-01-09 16:42:52,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86096040a/b15e3f6027504bf6ab159e81011b417a/FLAGdb601d1eb [2025-01-09 16:42:53,112 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/86096040a/b15e3f6027504bf6ab159e81011b417a [2025-01-09 16:42:53,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:42:53,115 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:42:53,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:42:53,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:42:53,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:42:53,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ee584a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53, skipping insertion in model container [2025-01-09 16:42:53,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,132 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:42:53,282 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/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2025-01-09 16:42:53,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:42:53,298 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:42:53,324 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/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2025-01-09 16:42:53,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:42:53,340 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:42:53,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53 WrapperNode [2025-01-09 16:42:53,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:42:53,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:42:53,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:42:53,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:42:53,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,372 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 445 [2025-01-09 16:42:53,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:42:53,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:42:53,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:42:53,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:42:53,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,408 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-01-09 16:42:53,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,416 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:42:53,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:42:53,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:42:53,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:42:53,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (1/1) ... [2025-01-09 16:42:53,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:42:53,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:42:53,452 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) [2025-01-09 16:42:53,455 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 [2025-01-09 16:42:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:42:53,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:42:53,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-09 16:42:53,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-09 16:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-09 16:42:53,470 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-09 16:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:42:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-09 16:42:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-09 16:42:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:42:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:42:53,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:42:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:42:53,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:42:53,472 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:42:53,561 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:42:53,563 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:42:53,950 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:42:53,951 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:42:54,245 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:42:54,245 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2025-01-09 16:42:54,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:42:54 BoogieIcfgContainer [2025-01-09 16:42:54,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:42:54,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:42:54,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:42:54,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:42:54,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:42:53" (1/3) ... [2025-01-09 16:42:54,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d2ee24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:42:54, skipping insertion in model container [2025-01-09 16:42:54,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:42:53" (2/3) ... [2025-01-09 16:42:54,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d2ee24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:42:54, skipping insertion in model container [2025-01-09 16:42:54,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:42:54" (3/3) ... [2025-01-09 16:42:54,252 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2025-01-09 16:42:54,263 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:42:54,264 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-2.wvr-bad.c that has 5 procedures, 61 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2025-01-09 16:42:54,265 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:42:54,333 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-09 16:42:54,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 84 transitions, 196 flow [2025-01-09 16:42:54,395 INFO L124 PetriNetUnfolderBase]: 24/80 cut-off events. [2025-01-09 16:42:54,398 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 16:42:54,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 24/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 179 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2025-01-09 16:42:54,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 84 transitions, 196 flow [2025-01-09 16:42:54,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 79 transitions, 182 flow [2025-01-09 16:42:54,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:42:54,424 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;@4d0b3d9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:42:54,425 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-09 16:42:54,446 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:42:54,446 INFO L124 PetriNetUnfolderBase]: 24/78 cut-off events. [2025-01-09 16:42:54,447 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 16:42:54,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:42:54,447 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:42:54,448 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-09 16:42:54,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:42:54,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1543867638, now seen corresponding path program 1 times [2025-01-09 16:42:54,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:42:54,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241307609] [2025-01-09 16:42:54,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:42:54,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:42:54,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 16:42:54,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:42:54,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:42:54,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:42:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:42:54,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:42:54,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241307609] [2025-01-09 16:42:54,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241307609] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:42:54,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:42:54,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:42:54,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152669271] [2025-01-09 16:42:54,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:42:54,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 16:42:54,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:42:54,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 16:42:54,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 16:42:54,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-01-09 16:42:54,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2025-01-09 16:42:54,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:42:54,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-01-09 16:42:54,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:42:55,539 INFO L124 PetriNetUnfolderBase]: 8519/11295 cut-off events. [2025-01-09 16:42:55,539 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2025-01-09 16:42:55,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21667 conditions, 11295 events. 8519/11295 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 49558 event pairs, 4408 based on Foata normal form. 0/8953 useless extension candidates. Maximal degree in co-relation 20136. Up to 9899 conditions per place. [2025-01-09 16:42:55,624 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 50 selfloop transitions, 0 changer transitions 0/75 dead transitions. [2025-01-09 16:42:55,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 274 flow [2025-01-09 16:42:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 16:42:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 16:42:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 112 transitions. [2025-01-09 16:42:55,638 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-09 16:42:55,639 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 182 flow. Second operand 2 states and 112 transitions. [2025-01-09 16:42:55,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 274 flow [2025-01-09 16:42:55,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 258 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-01-09 16:42:55,671 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 158 flow [2025-01-09 16:42:55,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2025-01-09 16:42:55,679 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2025-01-09 16:42:55,680 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 158 flow [2025-01-09 16:42:55,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2025-01-09 16:42:55,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:42:55,680 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:42:55,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:42:55,680 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-09 16:42:55,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:42:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1542044836, now seen corresponding path program 1 times [2025-01-09 16:42:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:42:55,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181272402] [2025-01-09 16:42:55,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:42:55,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:42:55,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 16:42:55,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 16:42:55,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:42:55,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:42:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:42:56,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:42:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181272402] [2025-01-09 16:42:56,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181272402] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:42:56,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:42:56,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:42:56,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162178443] [2025-01-09 16:42:56,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:42:56,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:42:56,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:42:56,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:42:56,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:42:56,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-01-09 16:42:56,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2025-01-09 16:42:56,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:42:56,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-01-09 16:42:56,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:42:57,327 INFO L124 PetriNetUnfolderBase]: 16935/24162 cut-off events. [2025-01-09 16:42:57,328 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2025-01-09 16:42:57,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44261 conditions, 24162 events. 16935/24162 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 140604 event pairs, 4408 based on Foata normal form. 1/19077 useless extension candidates. Maximal degree in co-relation 44258. Up to 11771 conditions per place. [2025-01-09 16:42:57,460 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 81 selfloop transitions, 7 changer transitions 1/114 dead transitions. [2025-01-09 16:42:57,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 114 transitions, 421 flow [2025-01-09 16:42:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:42:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:42:57,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2025-01-09 16:42:57,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-01-09 16:42:57,463 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 158 flow. Second operand 3 states and 177 transitions. [2025-01-09 16:42:57,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 114 transitions, 421 flow [2025-01-09 16:42:57,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 114 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 16:42:57,467 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 205 flow [2025-01-09 16:42:57,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2025-01-09 16:42:57,467 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2025-01-09 16:42:57,468 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 205 flow [2025-01-09 16:42:57,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2025-01-09 16:42:57,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:42:57,468 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:42:57,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:42:57,468 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-09 16:42:57,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:42:57,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1532424562, now seen corresponding path program 1 times [2025-01-09 16:42:57,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:42:57,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552713948] [2025-01-09 16:42:57,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:42:57,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:42:57,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-09 16:42:57,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 16:42:57,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:42:57,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:42:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:42:57,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:42:57,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552713948] [2025-01-09 16:42:57,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552713948] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:42:57,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:42:57,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:42:57,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447485958] [2025-01-09 16:42:57,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:42:57,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:42:57,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:42:57,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:42:57,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:42:57,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-01-09 16:42:57,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2025-01-09 16:42:57,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:42:57,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-01-09 16:42:57,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:42:59,633 INFO L124 PetriNetUnfolderBase]: 32037/42726 cut-off events. [2025-01-09 16:42:59,633 INFO L125 PetriNetUnfolderBase]: For 7889/7994 co-relation queries the response was YES. [2025-01-09 16:42:59,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89410 conditions, 42726 events. 32037/42726 cut-off events. For 7889/7994 co-relation queries the response was YES. Maximal size of possible extension queue 1334. Compared 231350 event pairs, 10250 based on Foata normal form. 1806/36330 useless extension candidates. Maximal degree in co-relation 89405. Up to 21608 conditions per place. [2025-01-09 16:42:59,843 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 90 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2025-01-09 16:42:59,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 492 flow [2025-01-09 16:42:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:42:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:42:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2025-01-09 16:42:59,844 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2025-01-09 16:42:59,844 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 205 flow. Second operand 3 states and 175 transitions. [2025-01-09 16:42:59,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 492 flow [2025-01-09 16:42:59,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 119 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:42:59,851 INFO L231 Difference]: Finished difference. Result has 66 places, 84 transitions, 234 flow [2025-01-09 16:42:59,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=66, PETRI_TRANSITIONS=84} [2025-01-09 16:42:59,852 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2025-01-09 16:42:59,852 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 84 transitions, 234 flow [2025-01-09 16:42:59,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2025-01-09 16:42:59,852 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:42:59,852 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:42:59,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:42:59,852 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-09 16:42:59,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:42:59,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1877147232, now seen corresponding path program 1 times [2025-01-09 16:42:59,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:42:59,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471224691] [2025-01-09 16:42:59,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:42:59,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:42:59,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-09 16:42:59,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 16:42:59,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:42:59,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:42:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:42:59,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:42:59,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471224691] [2025-01-09 16:42:59,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471224691] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:42:59,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:42:59,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:42:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437782949] [2025-01-09 16:42:59,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:42:59,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:42:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:42:59,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:42:59,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:42:59,950 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-01-09 16:42:59,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 84 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2025-01-09 16:42:59,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:42:59,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-01-09 16:42:59,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:04,582 INFO L124 PetriNetUnfolderBase]: 62586/93752 cut-off events. [2025-01-09 16:43:04,582 INFO L125 PetriNetUnfolderBase]: For 25916/26080 co-relation queries the response was YES. [2025-01-09 16:43:04,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193638 conditions, 93752 events. 62586/93752 cut-off events. For 25916/26080 co-relation queries the response was YES. Maximal size of possible extension queue 2892. Compared 719607 event pairs, 19627 based on Foata normal form. 1320/74050 useless extension candidates. Maximal degree in co-relation 193632. Up to 38827 conditions per place. [2025-01-09 16:43:05,268 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 104 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2025-01-09 16:43:05,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 131 transitions, 596 flow [2025-01-09 16:43:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:43:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:43:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2025-01-09 16:43:05,269 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-01-09 16:43:05,269 INFO L175 Difference]: Start difference. First operand has 66 places, 84 transitions, 234 flow. Second operand 3 states and 177 transitions. [2025-01-09 16:43:05,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 131 transitions, 596 flow [2025-01-09 16:43:05,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 131 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:43:05,288 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 244 flow [2025-01-09 16:43:05,288 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2025-01-09 16:43:05,289 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2025-01-09 16:43:05,289 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 244 flow [2025-01-09 16:43:05,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2025-01-09 16:43:05,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:05,290 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:05,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:43:05,290 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-09 16:43:05,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:05,290 INFO L85 PathProgramCache]: Analyzing trace with hash 900259970, now seen corresponding path program 1 times [2025-01-09 16:43:05,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:05,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580268748] [2025-01-09 16:43:05,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:05,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-09 16:43:05,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 16:43:05,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:05,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:43:05,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:05,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580268748] [2025-01-09 16:43:05,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580268748] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:05,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:05,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:43:05,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36952538] [2025-01-09 16:43:05,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:05,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:43:05,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:05,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:43:05,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:43:05,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-01-09 16:43:05,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2025-01-09 16:43:05,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:05,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-01-09 16:43:05,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:43:14,052 INFO L124 PetriNetUnfolderBase]: 121602/185934 cut-off events. [2025-01-09 16:43:14,053 INFO L125 PetriNetUnfolderBase]: For 59344/59717 co-relation queries the response was YES. [2025-01-09 16:43:14,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381528 conditions, 185934 events. 121602/185934 cut-off events. For 59344/59717 co-relation queries the response was YES. Maximal size of possible extension queue 5147. Compared 1586692 event pairs, 38274 based on Foata normal form. 2441/146099 useless extension candidates. Maximal degree in co-relation 381521. Up to 76103 conditions per place. [2025-01-09 16:43:15,195 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 106 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2025-01-09 16:43:15,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 133 transitions, 618 flow [2025-01-09 16:43:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:43:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:43:15,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2025-01-09 16:43:15,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-01-09 16:43:15,197 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 244 flow. Second operand 3 states and 177 transitions. [2025-01-09 16:43:15,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 133 transitions, 618 flow [2025-01-09 16:43:15,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:43:15,228 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 256 flow [2025-01-09 16:43:15,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2025-01-09 16:43:15,229 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2025-01-09 16:43:15,229 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 256 flow [2025-01-09 16:43:15,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2025-01-09 16:43:15,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:43:15,229 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:43:15,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:43:15,229 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-09 16:43:15,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:43:15,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1750466835, now seen corresponding path program 1 times [2025-01-09 16:43:15,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:43:15,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294754531] [2025-01-09 16:43:15,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:43:15,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:43:15,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-09 16:43:15,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-09 16:43:15,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:43:15,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:43:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:43:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:43:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294754531] [2025-01-09 16:43:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294754531] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:43:15,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:43:15,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:43:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657840078] [2025-01-09 16:43:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:43:15,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:43:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:43:15,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:43:15,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:43:15,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 84 [2025-01-09 16:43:15,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2025-01-09 16:43:15,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:43:15,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 84 [2025-01-09 16:43:15,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand