./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --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 [2025-01-10 01:06:42,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:06:42,425 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:06:42,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:06:42,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:06:42,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:06:42,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:06:42,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:06:42,445 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:06:42,446 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:06:42,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:06:42,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:06:42,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:06:42,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:06:42,446 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:06:42,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:06:42,446 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:06:42,447 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:06:42,447 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:06:42,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:06:42,448 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:06:42,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:06:42,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:06:42,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:06:42,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:06:42,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:06:42,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:06:42,449 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 [2025-01-10 01:06:42,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:06:42,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:06:42,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:06:42,681 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:06:42,681 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:06:42,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-01-10 01:06:43,868 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/afa89b817/b547660e0ab44838afd45eff4af93e54/FLAG25b6af010 [2025-01-10 01:06:44,204 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:06:44,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-01-10 01:06:44,227 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/afa89b817/b547660e0ab44838afd45eff4af93e54/FLAG25b6af010 [2025-01-10 01:06:44,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/afa89b817/b547660e0ab44838afd45eff4af93e54 [2025-01-10 01:06:44,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:06:44,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:06:44,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:06:44,462 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:06:44,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:06:44,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68001dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44, skipping insertion in model container [2025-01-10 01:06:44,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,482 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:06:44,633 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 01:06:44,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:06:44,642 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:06:44,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:06:44,685 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:06:44,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44 WrapperNode [2025-01-10 01:06:44,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:06:44,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:06:44,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:06:44,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:06:44,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,717 INFO L138 Inliner]: procedures = 25, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 447 [2025-01-10 01:06:44,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:06:44,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:06:44,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:06:44,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:06:44,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,743 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]. [2025-01-10 01:06:44,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,759 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,775 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:06:44,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:06:44,779 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:06:44,779 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:06:44,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (1/1) ... [2025-01-10 01:06:44,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:06:44,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:06:44,825 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) [2025-01-10 01:06:44,828 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 [2025-01-10 01:06:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:06:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 01:06:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 01:06:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 01:06:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 01:06:44,845 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 01:06:44,845 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 01:06:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-10 01:06:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-10 01:06:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:06:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 01:06:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 01:06:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 01:06:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 01:06:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 01:06:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 01:06:44,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:06:44,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:06:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 01:06:44,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 01:06:44,848 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 01:06:44,956 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:06:44,958 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:06:45,464 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:06:45,465 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:06:45,875 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:06:45,875 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2025-01-10 01:06:45,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:06:45 BoogieIcfgContainer [2025-01-10 01:06:45,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:06:45,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:06:45,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:06:45,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:06:45,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:06:44" (1/3) ... [2025-01-10 01:06:45,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f617ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:06:45, skipping insertion in model container [2025-01-10 01:06:45,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:44" (2/3) ... [2025-01-10 01:06:45,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f617ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:06:45, skipping insertion in model container [2025-01-10 01:06:45,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:06:45" (3/3) ... [2025-01-10 01:06:45,885 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2025-01-10 01:06:45,896 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:06:45,897 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-2.wvr-bad.c that has 5 procedures, 99 locations, 1 initial locations, 8 loop locations, and 34 error locations. [2025-01-10 01:06:45,897 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:06:45,973 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-10 01:06:46,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 122 transitions, 272 flow [2025-01-10 01:06:46,051 INFO L124 PetriNetUnfolderBase]: 24/118 cut-off events. [2025-01-10 01:06:46,052 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-10 01:06:46,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 118 events. 24/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 384 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2025-01-10 01:06:46,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 122 transitions, 272 flow [2025-01-10 01:06:46,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 117 transitions, 258 flow [2025-01-10 01:06:46,072 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:06:46,084 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=None, 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;@6d531237, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:06:46,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2025-01-10 01:06:46,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:06:46,089 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2025-01-10 01:06:46,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:06:46,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:46,090 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 01:06:46,090 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2025-01-10 01:06:46,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1355041, now seen corresponding path program 1 times [2025-01-10 01:06:46,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:46,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726946089] [2025-01-10 01:06:46,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:46,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:46,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 01:06:46,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 01:06:46,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:46,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:06:46,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:46,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726946089] [2025-01-10 01:06:46,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726946089] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:06:46,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:06:46,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:06:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443111147] [2025-01-10 01:06:46,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:46,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:06:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:46,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:06:46,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:06:46,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 122 [2025-01-10 01:06:46,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 117 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2025-01-10 01:06:46,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:46,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 122 [2025-01-10 01:06:46,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:55,582 INFO L124 PetriNetUnfolderBase]: 118659/157199 cut-off events. [2025-01-10 01:06:55,582 INFO L125 PetriNetUnfolderBase]: For 3384/3384 co-relation queries the response was YES. [2025-01-10 01:06:55,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305223 conditions, 157199 events. 118659/157199 cut-off events. For 3384/3384 co-relation queries the response was YES. Maximal size of possible extension queue 12498. Compared 1181869 event pairs, 87208 based on Foata normal form. 1/82026 useless extension candidates. Maximal degree in co-relation 297480. Up to 144091 conditions per place. [2025-01-10 01:06:56,611 INFO L140 encePairwiseOnDemand]: 111/122 looper letters, 76 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2025-01-10 01:06:56,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 394 flow [2025-01-10 01:06:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:06:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:06:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2025-01-10 01:06:56,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5163934426229508 [2025-01-10 01:06:56,627 INFO L175 Difference]: Start difference. First operand has 106 places, 117 transitions, 258 flow. Second operand 3 states and 189 transitions. [2025-01-10 01:06:56,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 394 flow [2025-01-10 01:06:56,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 107 transitions, 378 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-01-10 01:06:56,746 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 226 flow [2025-01-10 01:06:56,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2025-01-10 01:06:56,750 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -12 predicate places. [2025-01-10 01:06:56,750 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 226 flow [2025-01-10 01:06:56,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2025-01-10 01:06:56,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:56,751 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 01:06:56,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:06:56,751 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2025-01-10 01:06:56,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1355042, now seen corresponding path program 1 times [2025-01-10 01:06:56,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:56,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180581059] [2025-01-10 01:06:56,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:56,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 01:06:56,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 01:06:56,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:56,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:06:57,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:57,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180581059] [2025-01-10 01:06:57,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180581059] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:06:57,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:06:57,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 01:06:57,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308811567] [2025-01-10 01:06:57,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:57,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:06:57,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:57,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:06:57,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:06:57,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 122 [2025-01-10 01:06:57,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2025-01-10 01:06:57,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:57,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 122 [2025-01-10 01:06:57,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:07:05,347 INFO L124 PetriNetUnfolderBase]: 118659/157195 cut-off events. [2025-01-10 01:07:05,347 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2025-01-10 01:07:05,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302850 conditions, 157195 events. 118659/157195 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 12498. Compared 1181764 event pairs, 87208 based on Foata normal form. 0/82022 useless extension candidates. Maximal degree in co-relation 302819. Up to 144091 conditions per place. [2025-01-10 01:07:06,392 INFO L140 encePairwiseOnDemand]: 108/122 looper letters, 68 selfloop transitions, 10 changer transitions 0/103 dead transitions. [2025-01-10 01:07:06,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 103 transitions, 374 flow [2025-01-10 01:07:06,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:07:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:07:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 218 transitions. [2025-01-10 01:07:06,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44672131147540983 [2025-01-10 01:07:06,396 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 226 flow. Second operand 4 states and 218 transitions. [2025-01-10 01:07:06,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 103 transitions, 374 flow [2025-01-10 01:07:06,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 103 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:07:06,399 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 234 flow [2025-01-10 01:07:06,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2025-01-10 01:07:06,400 INFO L279 CegarLoopForPetriNet]: 106 programPoint places, -15 predicate places. [2025-01-10 01:07:06,400 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 234 flow [2025-01-10 01:07:06,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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) [2025-01-10 01:07:06,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:07:06,401 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:07:06,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:07:06,401 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2025-01-10 01:07:06,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:07:06,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1900188285, now seen corresponding path program 1 times [2025-01-10 01:07:06,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:07:06,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40021551] [2025-01-10 01:07:06,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:07:06,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:07:06,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:07:06,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:07:06,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:07:06,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:07:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:07:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:07:06,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40021551] [2025-01-10 01:07:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40021551] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:07:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:07:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:07:06,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093433692] [2025-01-10 01:07:06,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:07:06,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:07:06,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:07:06,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:07:06,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:07:06,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 122 [2025-01-10 01:07:06,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2025-01-10 01:07:06,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:07:06,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 122 [2025-01-10 01:07:06,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand