./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:50:29,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:50:29,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:50:29,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:50:30,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:50:30,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:50:30,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:50:30,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:50:30,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:50:30,023 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:50:30,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:50:30,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:50:30,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:50:30,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:50:30,026 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:50:30,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:50:30,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:50:30,027 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:50:30,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:50:30,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:50:30,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:50:30,028 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 ! overflow) ) 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 -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2025-02-06 18:50:30,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:50:30,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:50:30,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:50:30,315 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:50:30,316 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:50:30,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-02-06 18:50:31,602 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/11196cb3f/c4bc28e100b64bd68c81ca7b562c15b8/FLAG3faf05d91 [2025-02-06 18:50:31,876 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:50:31,877 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-02-06 18:50:31,888 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/11196cb3f/c4bc28e100b64bd68c81ca7b562c15b8/FLAG3faf05d91 [2025-02-06 18:50:31,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/11196cb3f/c4bc28e100b64bd68c81ca7b562c15b8 [2025-02-06 18:50:31,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:50:31,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:50:31,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:50:31,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:50:31,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:50:31,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:50:31" (1/1) ... [2025-02-06 18:50:31,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16199cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:31, skipping insertion in model container [2025-02-06 18:50:31,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:50:31" (1/1) ... [2025-02-06 18:50:31,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:50:32,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:50:32,105 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:50:32,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:50:32,146 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:50:32,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32 WrapperNode [2025-02-06 18:50:32,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:50:32,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:50:32,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:50:32,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:50:32,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,178 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 147 [2025-02-06 18:50:32,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:50:32,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:50:32,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:50:32,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:50:32,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,210 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 18:50:32,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,216 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:50:32,223 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:50:32,223 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:50:32,223 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:50:32,223 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (1/1) ... [2025-02-06 18:50:32,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:50:32,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:32,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:50:32,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:50:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:50:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:50:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:50:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:50:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:50:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:50:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:50:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:50:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:50:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:50:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:50:32,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:50:32,270 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:50:32,345 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:50:32,347 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:50:32,626 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:50:32,626 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:50:32,872 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:50:32,875 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:50:32,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:50:32 BoogieIcfgContainer [2025-02-06 18:50:32,875 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:50:32,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:50:32,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:50:32,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:50:32,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:50:31" (1/3) ... [2025-02-06 18:50:32,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ff0860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:50:32, skipping insertion in model container [2025-02-06 18:50:32,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:50:32" (2/3) ... [2025-02-06 18:50:32,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ff0860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:50:32, skipping insertion in model container [2025-02-06 18:50:32,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:50:32" (3/3) ... [2025-02-06 18:50:32,887 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2025-02-06 18:50:32,905 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:50:32,907 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-5.wvr.c that has 4 procedures, 48 locations, 1 initial locations, 2 loop locations, and 16 error locations. [2025-02-06 18:50:32,907 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:50:32,978 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:50:33,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 51 transitions, 123 flow [2025-02-06 18:50:33,052 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2025-02-06 18:50:33,054 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:50:33,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 4/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 159 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2025-02-06 18:50:33,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 51 transitions, 123 flow [2025-02-06 18:50:33,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 102 flow [2025-02-06 18:50:33,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:50:33,088 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;@31024235, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:50:33,088 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-02-06 18:50:33,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:50:33,112 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2025-02-06 18:50:33,112 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:50:33,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:33,113 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:33,113 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:50:33,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:33,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1949219476, now seen corresponding path program 1 times [2025-02-06 18:50:33,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:33,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732181689] [2025-02-06 18:50:33,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:33,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:33,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:50:33,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:50:33,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:33,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:33,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:33,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732181689] [2025-02-06 18:50:33,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732181689] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:33,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:33,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:50:33,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458843884] [2025-02-06 18:50:33,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:33,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:50:33,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:33,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:50:33,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:50:33,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-02-06 18:50:33,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:33,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:33,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-02-06 18:50:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:34,240 INFO L124 PetriNetUnfolderBase]: 4699/6657 cut-off events. [2025-02-06 18:50:34,241 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2025-02-06 18:50:34,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13870 conditions, 6657 events. 4699/6657 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 34281 event pairs, 842 based on Foata normal form. 0/4070 useless extension candidates. Maximal degree in co-relation 13449. Up to 5774 conditions per place. [2025-02-06 18:50:34,293 INFO L140 encePairwiseOnDemand]: 30/51 looper letters, 57 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2025-02-06 18:50:34,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 299 flow [2025-02-06 18:50:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:50:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:50:34,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-02-06 18:50:34,310 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2025-02-06 18:50:34,312 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 102 flow. Second operand 3 states and 98 transitions. [2025-02-06 18:50:34,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 299 flow [2025-02-06 18:50:34,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:50:34,325 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 181 flow [2025-02-06 18:50:34,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2025-02-06 18:50:34,330 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2025-02-06 18:50:34,331 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 181 flow [2025-02-06 18:50:34,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:34,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:34,331 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:34,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:50:34,332 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:50:34,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:34,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1949219474, now seen corresponding path program 1 times [2025-02-06 18:50:34,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:34,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253346455] [2025-02-06 18:50:34,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:34,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:34,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:50:34,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:50:34,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:34,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:34,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:34,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253346455] [2025-02-06 18:50:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253346455] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:34,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:50:34,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357566246] [2025-02-06 18:50:34,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:34,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:50:34,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:34,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:50:34,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:50:34,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-02-06 18:50:34,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 53 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:34,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:34,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-02-06 18:50:34,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:35,270 INFO L124 PetriNetUnfolderBase]: 6170/8895 cut-off events. [2025-02-06 18:50:35,271 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2025-02-06 18:50:35,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21981 conditions, 8895 events. 6170/8895 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 49579 event pairs, 3011 based on Foata normal form. 154/5665 useless extension candidates. Maximal degree in co-relation 20531. Up to 5090 conditions per place. [2025-02-06 18:50:35,337 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 73 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2025-02-06 18:50:35,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 79 transitions, 402 flow [2025-02-06 18:50:35,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:50:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:50:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-02-06 18:50:35,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2025-02-06 18:50:35,341 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 181 flow. Second operand 3 states and 94 transitions. [2025-02-06 18:50:35,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 79 transitions, 402 flow [2025-02-06 18:50:35,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:35,345 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 181 flow [2025-02-06 18:50:35,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2025-02-06 18:50:35,346 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2025-02-06 18:50:35,346 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 181 flow [2025-02-06 18:50:35,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:35,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:35,346 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:35,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:50:35,347 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:50:35,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:35,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1825828971, now seen corresponding path program 1 times [2025-02-06 18:50:35,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:35,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460572282] [2025-02-06 18:50:35,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:35,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:35,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:50:35,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:50:35,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:35,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:35,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460572282] [2025-02-06 18:50:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460572282] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:50:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054419301] [2025-02-06 18:50:35,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:35,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:50:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:35,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:50:35,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:50:35,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-02-06 18:50:35,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:35,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:35,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-02-06 18:50:35,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:36,255 INFO L124 PetriNetUnfolderBase]: 7604/11078 cut-off events. [2025-02-06 18:50:36,255 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2025-02-06 18:50:36,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28345 conditions, 11078 events. 7604/11078 cut-off events. For 1174/1174 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 63607 event pairs, 2457 based on Foata normal form. 158/7347 useless extension candidates. Maximal degree in co-relation 27013. Up to 7470 conditions per place. [2025-02-06 18:50:36,314 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 68 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2025-02-06 18:50:36,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 404 flow [2025-02-06 18:50:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:50:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:50:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2025-02-06 18:50:36,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2025-02-06 18:50:36,320 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 181 flow. Second operand 3 states and 92 transitions. [2025-02-06 18:50:36,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 404 flow [2025-02-06 18:50:36,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:36,325 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 189 flow [2025-02-06 18:50:36,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2025-02-06 18:50:36,326 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2025-02-06 18:50:36,326 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 189 flow [2025-02-06 18:50:36,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:36,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:36,327 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:36,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:50:36,327 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:50:36,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash 244012647, now seen corresponding path program 1 times [2025-02-06 18:50:36,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:36,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561507911] [2025-02-06 18:50:36,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:36,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:36,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:50:36,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:50:36,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:36,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:36,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:36,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561507911] [2025-02-06 18:50:36,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561507911] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:36,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:50:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:50:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150618307] [2025-02-06 18:50:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:36,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:50:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:36,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:50:36,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:50:36,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-02-06 18:50:36,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:36,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:36,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-02-06 18:50:36,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:37,186 INFO L124 PetriNetUnfolderBase]: 7237/10541 cut-off events. [2025-02-06 18:50:37,186 INFO L125 PetriNetUnfolderBase]: For 1722/1722 co-relation queries the response was YES. [2025-02-06 18:50:37,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28101 conditions, 10541 events. 7237/10541 cut-off events. For 1722/1722 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 60675 event pairs, 6461 based on Foata normal form. 0/7191 useless extension candidates. Maximal degree in co-relation 26711. Up to 10530 conditions per place. [2025-02-06 18:50:37,240 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 42 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2025-02-06 18:50:37,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 269 flow [2025-02-06 18:50:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:50:37,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:50:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-02-06 18:50:37,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3790849673202614 [2025-02-06 18:50:37,242 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 189 flow. Second operand 3 states and 58 transitions. [2025-02-06 18:50:37,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 269 flow [2025-02-06 18:50:37,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:37,245 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 182 flow [2025-02-06 18:50:37,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2025-02-06 18:50:37,246 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2025-02-06 18:50:37,246 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 182 flow [2025-02-06 18:50:37,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:37,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:37,247 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:37,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:50:37,247 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:50:37,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:37,247 INFO L85 PathProgramCache]: Analyzing trace with hash 244012648, now seen corresponding path program 1 times [2025-02-06 18:50:37,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:37,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492684742] [2025-02-06 18:50:37,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:37,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:37,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:50:37,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:50:37,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:37,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:37,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:37,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492684742] [2025-02-06 18:50:37,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492684742] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457060634] [2025-02-06 18:50:37,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:37,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:37,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:37,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:37,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:50:37,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:50:37,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:50:37,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:37,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:37,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 18:50:37,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:37,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:37,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457060634] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:37,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:37,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-02-06 18:50:37,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890734024] [2025-02-06 18:50:37,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:37,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:50:37,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:37,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:50:37,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:50:37,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-02-06 18:50:37,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:37,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:37,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-02-06 18:50:37,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:40,221 INFO L124 PetriNetUnfolderBase]: 30003/42914 cut-off events. [2025-02-06 18:50:40,221 INFO L125 PetriNetUnfolderBase]: For 7414/7414 co-relation queries the response was YES. [2025-02-06 18:50:40,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114401 conditions, 42914 events. 30003/42914 cut-off events. For 7414/7414 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 275686 event pairs, 2169 based on Foata normal form. 194/29659 useless extension candidates. Maximal degree in co-relation 114389. Up to 14991 conditions per place. [2025-02-06 18:50:40,446 INFO L140 encePairwiseOnDemand]: 33/51 looper letters, 241 selfloop transitions, 58 changer transitions 0/302 dead transitions. [2025-02-06 18:50:40,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 302 transitions, 1700 flow [2025-02-06 18:50:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:50:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:50:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 372 transitions. [2025-02-06 18:50:40,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7294117647058823 [2025-02-06 18:50:40,449 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 182 flow. Second operand 10 states and 372 transitions. [2025-02-06 18:50:40,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 302 transitions, 1700 flow [2025-02-06 18:50:40,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 302 transitions, 1699 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:40,457 INFO L231 Difference]: Finished difference. Result has 67 places, 111 transitions, 842 flow [2025-02-06 18:50:40,457 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=842, PETRI_PLACES=67, PETRI_TRANSITIONS=111} [2025-02-06 18:50:40,458 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2025-02-06 18:50:40,458 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 111 transitions, 842 flow [2025-02-06 18:50:40,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:40,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:40,458 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:40,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:50:40,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:40,663 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:50:40,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 244012646, now seen corresponding path program 1 times [2025-02-06 18:50:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:40,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412855371] [2025-02-06 18:50:40,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:40,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:40,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:50:40,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:50:40,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:40,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:40,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:40,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412855371] [2025-02-06 18:50:40,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412855371] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:40,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603105973] [2025-02-06 18:50:40,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:40,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:40,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:40,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:40,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:50:40,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:50:40,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:50:40,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:40,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:40,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:50:40,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:40,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:40,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603105973] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:40,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:40,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2025-02-06 18:50:40,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105143328] [2025-02-06 18:50:40,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:40,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:50:40,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:40,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:50:40,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:50:40,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-02-06 18:50:40,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 111 transitions, 842 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:40,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:40,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-02-06 18:50:40,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:46,058 INFO L124 PetriNetUnfolderBase]: 64061/91190 cut-off events. [2025-02-06 18:50:46,059 INFO L125 PetriNetUnfolderBase]: For 177938/177938 co-relation queries the response was YES. [2025-02-06 18:50:46,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302274 conditions, 91190 events. 64061/91190 cut-off events. For 177938/177938 co-relation queries the response was YES. Maximal size of possible extension queue 2628. Compared 626113 event pairs, 2207 based on Foata normal form. 5799/77206 useless extension candidates. Maximal degree in co-relation 302254. Up to 34215 conditions per place. [2025-02-06 18:50:46,743 INFO L140 encePairwiseOnDemand]: 33/51 looper letters, 229 selfloop transitions, 92 changer transitions 0/324 dead transitions. [2025-02-06 18:50:46,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 324 transitions, 2953 flow [2025-02-06 18:50:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:50:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:50:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2025-02-06 18:50:46,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673202614379085 [2025-02-06 18:50:46,745 INFO L175 Difference]: Start difference. First operand has 67 places, 111 transitions, 842 flow. Second operand 6 states and 206 transitions. [2025-02-06 18:50:46,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 324 transitions, 2953 flow [2025-02-06 18:50:47,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 324 transitions, 2824 flow, removed 63 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:47,526 INFO L231 Difference]: Finished difference. Result has 74 places, 198 transitions, 2199 flow [2025-02-06 18:50:47,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2199, PETRI_PLACES=74, PETRI_TRANSITIONS=198} [2025-02-06 18:50:47,528 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2025-02-06 18:50:47,528 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 198 transitions, 2199 flow [2025-02-06 18:50:47,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:47,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:47,528 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:47,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:50:47,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:47,732 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:50:47,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash 136196963, now seen corresponding path program 1 times [2025-02-06 18:50:47,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:47,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938998115] [2025-02-06 18:50:47,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:47,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:47,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:50:47,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:50:47,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:47,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:47,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:47,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938998115] [2025-02-06 18:50:47,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938998115] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:47,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840484913] [2025-02-06 18:50:47,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:47,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:47,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:47,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:47,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:50:47,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:50:47,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:50:47,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:47,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:47,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:50:47,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:47,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:47,923 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:50:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840484913] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:50:47,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:50:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-02-06 18:50:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006105719] [2025-02-06 18:50:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:50:47,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:50:47,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:47,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:50:47,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:50:47,928 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-02-06 18:50:47,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 198 transitions, 2199 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:47,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:47,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-02-06 18:50:47,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:50:54,020 INFO L124 PetriNetUnfolderBase]: 60368/85871 cut-off events. [2025-02-06 18:50:54,020 INFO L125 PetriNetUnfolderBase]: For 297004/297004 co-relation queries the response was YES. [2025-02-06 18:50:54,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321500 conditions, 85871 events. 60368/85871 cut-off events. For 297004/297004 co-relation queries the response was YES. Maximal size of possible extension queue 2514. Compared 605419 event pairs, 43096 based on Foata normal form. 0/68966 useless extension candidates. Maximal degree in co-relation 321476. Up to 85860 conditions per place. [2025-02-06 18:50:54,743 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 188 selfloop transitions, 1 changer transitions 0/192 dead transitions. [2025-02-06 18:50:54,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 192 transitions, 2510 flow [2025-02-06 18:50:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:50:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:50:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2025-02-06 18:50:54,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2025-02-06 18:50:54,744 INFO L175 Difference]: Start difference. First operand has 74 places, 198 transitions, 2199 flow. Second operand 3 states and 57 transitions. [2025-02-06 18:50:54,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 192 transitions, 2510 flow [2025-02-06 18:50:55,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 192 transitions, 2415 flow, removed 46 selfloop flow, removed 1 redundant places. [2025-02-06 18:50:55,616 INFO L231 Difference]: Finished difference. Result has 74 places, 192 transitions, 2039 flow [2025-02-06 18:50:55,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2039, PETRI_PLACES=74, PETRI_TRANSITIONS=192} [2025-02-06 18:50:55,617 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2025-02-06 18:50:55,617 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 192 transitions, 2039 flow [2025-02-06 18:50:55,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:55,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:50:55,617 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:50:55,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:50:55,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:55,822 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:50:55,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:50:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash 136196964, now seen corresponding path program 1 times [2025-02-06 18:50:55,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:50:55,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018637762] [2025-02-06 18:50:55,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:55,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:50:55,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:50:55,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:50:55,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:55,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:55,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:50:55,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018637762] [2025-02-06 18:50:55,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018637762] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:50:55,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560674116] [2025-02-06 18:50:55,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:50:55,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:50:55,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:50:55,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:50:55,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:50:55,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:50:55,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:50:55,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:50:55,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:50:55,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:50:55,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:50:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:55,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:50:56,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:50:56,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560674116] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:50:56,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:50:56,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2025-02-06 18:50:56,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712239404] [2025-02-06 18:50:56,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:50:56,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:50:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:50:56,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:50:56,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:50:56,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-02-06 18:50:56,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 192 transitions, 2039 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:50:56,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:50:56,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-02-06 18:50:56,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:51:12,999 INFO L124 PetriNetUnfolderBase]: 158547/226898 cut-off events. [2025-02-06 18:51:12,999 INFO L125 PetriNetUnfolderBase]: For 807688/807688 co-relation queries the response was YES. [2025-02-06 18:51:13,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822291 conditions, 226898 events. 158547/226898 cut-off events. For 807688/807688 co-relation queries the response was YES. Maximal size of possible extension queue 4999. Compared 1713054 event pairs, 36948 based on Foata normal form. 2586/191451 useless extension candidates. Maximal degree in co-relation 822266. Up to 52731 conditions per place. [2025-02-06 18:51:14,563 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 676 selfloop transitions, 59 changer transitions 0/738 dead transitions. [2025-02-06 18:51:14,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 738 transitions, 9440 flow [2025-02-06 18:51:14,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:51:14,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:51:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2025-02-06 18:51:14,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673202614379085 [2025-02-06 18:51:14,564 INFO L175 Difference]: Start difference. First operand has 74 places, 192 transitions, 2039 flow. Second operand 6 states and 206 transitions. [2025-02-06 18:51:14,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 738 transitions, 9440 flow [2025-02-06 18:51:19,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 738 transitions, 9439 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:51:19,998 INFO L231 Difference]: Finished difference. Result has 82 places, 240 transitions, 3031 flow [2025-02-06 18:51:19,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3031, PETRI_PLACES=82, PETRI_TRANSITIONS=240} [2025-02-06 18:51:19,999 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2025-02-06 18:51:19,999 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 240 transitions, 3031 flow [2025-02-06 18:51:19,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:51:19,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:51:19,999 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:51:20,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 18:51:20,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-06 18:51:20,204 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-02-06 18:51:20,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:51:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1821228322, now seen corresponding path program 1 times [2025-02-06 18:51:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:51:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765112835] [2025-02-06 18:51:20,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:51:20,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:51:20,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:51:20,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:20,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:20,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:51:20,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765112835] [2025-02-06 18:51:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765112835] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:51:20,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248548229] [2025-02-06 18:51:20,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:51:20,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:51:20,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:51:20,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:51:20,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:51:20,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:51:20,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:51:20,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:51:20,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:51:20,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:51:20,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:51:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:51:20,376 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:51:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248548229] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:51:20,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:51:20,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2025-02-06 18:51:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944876618] [2025-02-06 18:51:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:51:20,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:51:20,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:51:20,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:51:20,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:51:20,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-02-06 18:51:20,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 240 transitions, 3031 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:51:20,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:51:20,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-02-06 18:51:20,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand