./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 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! 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-?-798a7b3-m [2025-03-04 15:26:43,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:26:43,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:26:43,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:26:43,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:26:43,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:26:43,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:26:43,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:26:43,259 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:26:43,260 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:26:43,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:26:43,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:26:43,260 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:26:43,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:26:43,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:26:43,261 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:26:43,262 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:26:43,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:26:43,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:26:43,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:26:43,263 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 [2025-03-04 15:26:43,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:26:43,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:26:43,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:26:43,476 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:26:43,476 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:26:43,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-03-04 15:26:44,586 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce117e69/0ff46e53586b4846bf86666760443eb7/FLAG32b38554d [2025-03-04 15:26:44,791 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:26:44,792 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-03-04 15:26:44,805 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce117e69/0ff46e53586b4846bf86666760443eb7/FLAG32b38554d [2025-03-04 15:26:45,145 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce117e69/0ff46e53586b4846bf86666760443eb7 [2025-03-04 15:26:45,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:26:45,148 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:26:45,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:26:45,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:26:45,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:26:45,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1d44a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45, skipping insertion in model container [2025-03-04 15:26:45,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,163 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:26:45,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:26:45,288 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:26:45,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:26:45,319 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:26:45,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45 WrapperNode [2025-03-04 15:26:45,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:26:45,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:26:45,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:26:45,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:26:45,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,347 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 147 [2025-03-04 15:26:45,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:26:45,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:26:45,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:26:45,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:26:45,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,360 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,374 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]. [2025-03-04 15:26:45,375 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,375 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,379 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,384 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,387 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:26:45,388 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:26:45,388 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:26:45,388 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:26:45,389 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (1/1) ... [2025-03-04 15:26:45,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:26:45,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:45,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:26:45,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:26:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:26:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 15:26:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 15:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:26:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:26:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:26:45,427 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:26:45,481 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:26:45,482 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:26:45,666 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:26:45,666 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:26:45,822 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:26:45,823 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:26:45,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:26:45 BoogieIcfgContainer [2025-03-04 15:26:45,824 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:26:45,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:26:45,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:26:45,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:26:45,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:26:45" (1/3) ... [2025-03-04 15:26:45,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bb4a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:26:45, skipping insertion in model container [2025-03-04 15:26:45,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:26:45" (2/3) ... [2025-03-04 15:26:45,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bb4a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:26:45, skipping insertion in model container [2025-03-04 15:26:45,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:26:45" (3/3) ... [2025-03-04 15:26:45,831 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2025-03-04 15:26:45,841 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:26:45,842 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. [2025-03-04 15:26:45,842 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:26:45,903 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 15:26:45,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 51 transitions, 123 flow [2025-03-04 15:26:45,962 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2025-03-04 15:26:45,966 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 15:26:45,969 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. [2025-03-04 15:26:45,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 51 transitions, 123 flow [2025-03-04 15:26:45,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 102 flow [2025-03-04 15:26:45,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:26:45,990 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;@3c785693, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:26:45,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-03-04 15:26:45,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:26:45,996 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2025-03-04 15:26:45,996 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:26:45,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:45,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:45,996 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:26:46,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:46,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1949219476, now seen corresponding path program 1 times [2025-03-04 15:26:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:46,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916530019] [2025-03-04 15:26:46,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:46,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:46,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:26:46,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:26:46,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:46,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:46,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:46,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916530019] [2025-03-04 15:26:46,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916530019] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:46,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:46,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:26:46,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120932001] [2025-03-04 15:26:46,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:46,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:26:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:46,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:26:46,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:26:46,258 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-04 15:26:46,260 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) [2025-03-04 15:26:46,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:46,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-04 15:26:46,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:46,853 INFO L124 PetriNetUnfolderBase]: 4699/6657 cut-off events. [2025-03-04 15:26:46,853 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2025-03-04 15:26:46,862 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. [2025-03-04 15:26:46,888 INFO L140 encePairwiseOnDemand]: 30/51 looper letters, 57 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2025-03-04 15:26:46,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 299 flow [2025-03-04 15:26:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:26:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:26:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-03-04 15:26:46,898 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2025-03-04 15:26:46,899 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 102 flow. Second operand 3 states and 98 transitions. [2025-03-04 15:26:46,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 299 flow [2025-03-04 15:26:46,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 15:26:46,906 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 181 flow [2025-03-04 15:26:46,908 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} [2025-03-04 15:26:46,912 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2025-03-04 15:26:46,912 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 181 flow [2025-03-04 15:26:46,912 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) [2025-03-04 15:26:46,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:46,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:46,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:26:46,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:26:46,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:46,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1949219474, now seen corresponding path program 1 times [2025-03-04 15:26:46,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:46,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334436178] [2025-03-04 15:26:46,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:46,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:26:46,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:26:46,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:46,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:46,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:46,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334436178] [2025-03-04 15:26:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334436178] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:46,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:46,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:26:46,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074386007] [2025-03-04 15:26:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:46,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:26:46,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:46,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:26:46,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:26:46,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-04 15:26:46,997 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) [2025-03-04 15:26:46,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:46,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-04 15:26:46,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:47,600 INFO L124 PetriNetUnfolderBase]: 6170/8895 cut-off events. [2025-03-04 15:26:47,600 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2025-03-04 15:26:47,615 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. [2025-03-04 15:26:47,658 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 73 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2025-03-04 15:26:47,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 79 transitions, 402 flow [2025-03-04 15:26:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:26:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:26:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-03-04 15:26:47,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2025-03-04 15:26:47,660 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 181 flow. Second operand 3 states and 94 transitions. [2025-03-04 15:26:47,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 79 transitions, 402 flow [2025-03-04 15:26:47,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:47,665 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 181 flow [2025-03-04 15:26:47,665 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} [2025-03-04 15:26:47,666 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2025-03-04 15:26:47,666 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 181 flow [2025-03-04 15:26:47,666 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) [2025-03-04 15:26:47,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:47,666 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:47,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:26:47,666 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:26:47,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1825828971, now seen corresponding path program 1 times [2025-03-04 15:26:47,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:47,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670592194] [2025-03-04 15:26:47,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:47,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:47,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-04 15:26:47,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-04 15:26:47,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:47,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:47,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:47,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670592194] [2025-03-04 15:26:47,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670592194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:47,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:47,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:26:47,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570990938] [2025-03-04 15:26:47,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:47,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:26:47,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:47,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:26:47,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:26:47,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-04 15:26:47,766 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) [2025-03-04 15:26:47,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:47,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-04 15:26:47,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:48,338 INFO L124 PetriNetUnfolderBase]: 7604/11078 cut-off events. [2025-03-04 15:26:48,339 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2025-03-04 15:26:48,348 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. [2025-03-04 15:26:48,376 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 68 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2025-03-04 15:26:48,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 404 flow [2025-03-04 15:26:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:26:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:26:48,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2025-03-04 15:26:48,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2025-03-04 15:26:48,378 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 181 flow. Second operand 3 states and 92 transitions. [2025-03-04 15:26:48,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 404 flow [2025-03-04 15:26:48,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:48,380 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 189 flow [2025-03-04 15:26:48,380 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} [2025-03-04 15:26:48,381 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2025-03-04 15:26:48,381 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 189 flow [2025-03-04 15:26:48,381 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) [2025-03-04 15:26:48,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:48,381 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:48,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:26:48,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:26:48,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash 244012647, now seen corresponding path program 1 times [2025-03-04 15:26:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:48,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926405617] [2025-03-04 15:26:48,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:48,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:48,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:26:48,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:26:48,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:48,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:48,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:48,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926405617] [2025-03-04 15:26:48,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926405617] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:48,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:26:48,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:26:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132247513] [2025-03-04 15:26:48,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:48,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:26:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:48,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:26:48,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:26:48,412 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-04 15:26:48,412 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) [2025-03-04 15:26:48,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:48,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-04 15:26:48,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:48,838 INFO L124 PetriNetUnfolderBase]: 7237/10541 cut-off events. [2025-03-04 15:26:48,838 INFO L125 PetriNetUnfolderBase]: For 1722/1722 co-relation queries the response was YES. [2025-03-04 15:26:48,850 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. [2025-03-04 15:26:48,876 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 42 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2025-03-04 15:26:48,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 269 flow [2025-03-04 15:26:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:26:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:26:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-03-04 15:26:48,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3790849673202614 [2025-03-04 15:26:48,880 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 189 flow. Second operand 3 states and 58 transitions. [2025-03-04 15:26:48,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 269 flow [2025-03-04 15:26:48,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:48,882 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 182 flow [2025-03-04 15:26:48,882 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} [2025-03-04 15:26:48,882 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2025-03-04 15:26:48,883 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 182 flow [2025-03-04 15:26:48,884 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) [2025-03-04 15:26:48,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:48,884 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:48,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:26:48,884 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:26:48,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash 244012648, now seen corresponding path program 1 times [2025-03-04 15:26:48,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:48,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023837024] [2025-03-04 15:26:48,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:48,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:48,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:26:48,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:26:48,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:48,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:48,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023837024] [2025-03-04 15:26:48,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023837024] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773150504] [2025-03-04 15:26:48,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:48,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:48,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:48,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:48,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:26:48,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:26:49,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:26:49,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:49,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:49,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 15:26:49,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:49,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:49,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773150504] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:49,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:49,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-03-04 15:26:49,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101771826] [2025-03-04 15:26:49,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:49,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 15:26:49,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:49,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 15:26:49,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:26:49,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-04 15:26:49,165 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) [2025-03-04 15:26:49,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:49,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-04 15:26:49,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:51,188 INFO L124 PetriNetUnfolderBase]: 30003/42914 cut-off events. [2025-03-04 15:26:51,189 INFO L125 PetriNetUnfolderBase]: For 7414/7414 co-relation queries the response was YES. [2025-03-04 15:26:51,263 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. [2025-03-04 15:26:51,402 INFO L140 encePairwiseOnDemand]: 33/51 looper letters, 241 selfloop transitions, 58 changer transitions 0/302 dead transitions. [2025-03-04 15:26:51,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 302 transitions, 1700 flow [2025-03-04 15:26:51,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:26:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:26:51,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 372 transitions. [2025-03-04 15:26:51,404 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7294117647058823 [2025-03-04 15:26:51,404 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 182 flow. Second operand 10 states and 372 transitions. [2025-03-04 15:26:51,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 302 transitions, 1700 flow [2025-03-04 15:26:51,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 302 transitions, 1699 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:51,413 INFO L231 Difference]: Finished difference. Result has 67 places, 111 transitions, 842 flow [2025-03-04 15:26:51,415 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} [2025-03-04 15:26:51,415 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2025-03-04 15:26:51,417 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 111 transitions, 842 flow [2025-03-04 15:26:51,417 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) [2025-03-04 15:26:51,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:51,417 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:51,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:26:51,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:51,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:26:51,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:51,622 INFO L85 PathProgramCache]: Analyzing trace with hash 244012646, now seen corresponding path program 1 times [2025-03-04 15:26:51,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:51,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183196391] [2025-03-04 15:26:51,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:51,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:51,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:26:51,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:26:51,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:51,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:51,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183196391] [2025-03-04 15:26:51,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183196391] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:51,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598009239] [2025-03-04 15:26:51,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:51,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:51,685 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:51,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:26:51,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:26:51,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:26:51,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:51,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:51,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:26:51,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:51,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:26:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:51,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598009239] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:26:51,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:26:51,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2025-03-04 15:26:51,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166106296] [2025-03-04 15:26:51,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:26:51,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:26:51,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:51,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:26:51,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:51,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-04 15:26:51,763 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) [2025-03-04 15:26:51,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:51,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-04 15:26:51,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:26:56,635 INFO L124 PetriNetUnfolderBase]: 64061/91190 cut-off events. [2025-03-04 15:26:56,635 INFO L125 PetriNetUnfolderBase]: For 177938/177938 co-relation queries the response was YES. [2025-03-04 15:26:56,928 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. [2025-03-04 15:26:57,266 INFO L140 encePairwiseOnDemand]: 33/51 looper letters, 229 selfloop transitions, 92 changer transitions 0/324 dead transitions. [2025-03-04 15:26:57,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 324 transitions, 2953 flow [2025-03-04 15:26:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:26:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:26:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2025-03-04 15:26:57,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673202614379085 [2025-03-04 15:26:57,268 INFO L175 Difference]: Start difference. First operand has 67 places, 111 transitions, 842 flow. Second operand 6 states and 206 transitions. [2025-03-04 15:26:57,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 324 transitions, 2953 flow [2025-03-04 15:26:57,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 324 transitions, 2824 flow, removed 63 selfloop flow, removed 1 redundant places. [2025-03-04 15:26:57,975 INFO L231 Difference]: Finished difference. Result has 74 places, 198 transitions, 2199 flow [2025-03-04 15:26:57,975 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} [2025-03-04 15:26:57,976 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2025-03-04 15:26:57,976 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 198 transitions, 2199 flow [2025-03-04 15:26:57,976 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) [2025-03-04 15:26:57,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:26:57,976 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:26:57,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 15:26:58,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-04 15:26:58,180 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:26:58,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:26:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash 136196963, now seen corresponding path program 1 times [2025-03-04 15:26:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:26:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144629673] [2025-03-04 15:26:58,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:26:58,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:26:58,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:26:58,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:58,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:58,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:26:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144629673] [2025-03-04 15:26:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144629673] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:26:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780083360] [2025-03-04 15:26:58,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:26:58,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:26:58,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:26:58,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:26:58,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:26:58,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:26:58,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:26:58,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:26:58,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:26:58,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:26:58,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:26:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:26:58,328 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:26:58,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780083360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:26:58,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:26:58,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-04 15:26:58,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444200458] [2025-03-04 15:26:58,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:26:58,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:26:58,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:26:58,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:26:58,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:26:58,329 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-04 15:26:58,330 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) [2025-03-04 15:26:58,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:26:58,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-04 15:26:58,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:04,049 INFO L124 PetriNetUnfolderBase]: 60368/85871 cut-off events. [2025-03-04 15:27:04,049 INFO L125 PetriNetUnfolderBase]: For 297004/297004 co-relation queries the response was YES. [2025-03-04 15:27:04,349 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. [2025-03-04 15:27:04,627 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 188 selfloop transitions, 1 changer transitions 0/192 dead transitions. [2025-03-04 15:27:04,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 192 transitions, 2510 flow [2025-03-04 15:27:04,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:27:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:27:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2025-03-04 15:27:04,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2025-03-04 15:27:04,628 INFO L175 Difference]: Start difference. First operand has 74 places, 198 transitions, 2199 flow. Second operand 3 states and 57 transitions. [2025-03-04 15:27:04,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 192 transitions, 2510 flow [2025-03-04 15:27:05,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 192 transitions, 2415 flow, removed 46 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:05,443 INFO L231 Difference]: Finished difference. Result has 74 places, 192 transitions, 2039 flow [2025-03-04 15:27:05,443 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} [2025-03-04 15:27:05,444 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2025-03-04 15:27:05,444 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 192 transitions, 2039 flow [2025-03-04 15:27:05,444 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) [2025-03-04 15:27:05,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:05,444 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:05,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:05,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:05,648 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-04 15:27:05,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:05,649 INFO L85 PathProgramCache]: Analyzing trace with hash 136196964, now seen corresponding path program 1 times [2025-03-04 15:27:05,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:05,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769546372] [2025-03-04 15:27:05,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:05,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:05,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:27:05,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:27:05,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:05,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:05,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:05,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769546372] [2025-03-04 15:27:05,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769546372] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:05,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110226760] [2025-03-04 15:27:05,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:05,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:05,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:05,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:05,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:27:05,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:27:05,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:27:05,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:05,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:05,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:27:05,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:05,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110226760] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:05,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:05,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2025-03-04 15:27:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354140360] [2025-03-04 15:27:05,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:05,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:27:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:05,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:27:05,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-04 15:27:05,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-04 15:27:05,788 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) [2025-03-04 15:27:05,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:05,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-04 15:27:05,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand