./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-8fc3dc6-m [2025-03-17 19:43:05,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:43:06,032 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:43:06,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:43:06,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:43:06,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:43:06,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:43:06,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:43:06,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:43:06,055 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:43:06,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:43:06,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:43:06,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:43:06,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:43:06,055 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:43:06,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:43:06,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:43:06,055 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:43:06,056 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:43:06,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:43:06,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:43:06,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:43:06,057 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 [2025-03-17 19:43:06,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:43:06,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:43:06,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:43:06,303 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:43:06,303 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:43:06,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-03-17 19:43:07,451 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469d29f86/bc38746bb4fe4356bd30ea5acae6299d/FLAG272501606 [2025-03-17 19:43:07,695 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:43:07,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-03-17 19:43:07,703 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469d29f86/bc38746bb4fe4356bd30ea5acae6299d/FLAG272501606 [2025-03-17 19:43:07,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469d29f86/bc38746bb4fe4356bd30ea5acae6299d [2025-03-17 19:43:07,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:43:07,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:43:07,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:43:07,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:43:07,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:43:07,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8177ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07, skipping insertion in model container [2025-03-17 19:43:07,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,745 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:43:07,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:43:07,885 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:43:07,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:43:07,920 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:43:07,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07 WrapperNode [2025-03-17 19:43:07,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:43:07,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:43:07,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:43:07,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:43:07,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,949 INFO L138 Inliner]: procedures = 21, calls = 31, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 147 [2025-03-17 19:43:07,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:43:07,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:43:07,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:43:07,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:43:07,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,976 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]. [2025-03-17 19:43:07,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,984 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:43:07,992 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:43:07,992 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:43:07,992 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:43:07,993 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (1/1) ... [2025-03-17 19:43:07,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:43:08,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:08,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:43:08,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:43:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:43:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:43:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:43:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:43:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:43:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:43:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:43:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:43:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:43:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:43:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:43:08,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:43:08,044 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:43:08,112 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:43:08,114 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:43:08,366 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:43:08,367 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:43:08,555 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:43:08,555 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:43:08,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:43:08 BoogieIcfgContainer [2025-03-17 19:43:08,555 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:43:08,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:43:08,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:43:08,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:43:08,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:43:07" (1/3) ... [2025-03-17 19:43:08,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebbdf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:43:08, skipping insertion in model container [2025-03-17 19:43:08,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:43:07" (2/3) ... [2025-03-17 19:43:08,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebbdf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:43:08, skipping insertion in model container [2025-03-17 19:43:08,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:43:08" (3/3) ... [2025-03-17 19:43:08,566 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2025-03-17 19:43:08,577 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:43:08,579 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. [2025-03-17 19:43:08,579 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:43:08,645 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:43:08,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 51 transitions, 123 flow [2025-03-17 19:43:08,711 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2025-03-17 19:43:08,713 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:43:08,717 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 158 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. [2025-03-17 19:43:08,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 51 transitions, 123 flow [2025-03-17 19:43:08,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 102 flow [2025-03-17 19:43:08,731 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:43:08,756 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;@14e01a93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:43:08,757 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2025-03-17 19:43:08,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:43:08,766 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2025-03-17 19:43:08,768 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:43:08,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:08,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:08,769 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:43:08,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash 541157002, now seen corresponding path program 1 times [2025-03-17 19:43:08,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871215473] [2025-03-17 19:43:08,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:08,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:43:08,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:43:08,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:08,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:08,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:08,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871215473] [2025-03-17 19:43:08,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871215473] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:08,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:08,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:43:08,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512235326] [2025-03-17 19:43:08,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:08,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:09,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:09,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:09,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-17 19:43:09,017 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) [2025-03-17 19:43:09,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:09,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-17 19:43:09,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:09,663 INFO L124 PetriNetUnfolderBase]: 4699/6657 cut-off events. [2025-03-17 19:43:09,664 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2025-03-17 19:43:09,673 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 34283 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. [2025-03-17 19:43:09,700 INFO L140 encePairwiseOnDemand]: 30/51 looper letters, 57 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2025-03-17 19:43:09,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 299 flow [2025-03-17 19:43:09,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2025-03-17 19:43:09,710 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2025-03-17 19:43:09,711 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 102 flow. Second operand 3 states and 98 transitions. [2025-03-17 19:43:09,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 299 flow [2025-03-17 19:43:09,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:43:09,719 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 181 flow [2025-03-17 19:43:09,720 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} [2025-03-17 19:43:09,724 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2025-03-17 19:43:09,724 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 181 flow [2025-03-17 19:43:09,724 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) [2025-03-17 19:43:09,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:09,724 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:09,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:43:09,725 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:43:09,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash 541157004, now seen corresponding path program 1 times [2025-03-17 19:43:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:09,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965304557] [2025-03-17 19:43:09,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:09,736 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:43:09,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:43:09,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:09,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:09,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:09,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965304557] [2025-03-17 19:43:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965304557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:09,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:09,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:43:09,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67956304] [2025-03-17 19:43:09,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:09,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:09,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:09,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:09,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:09,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-17 19:43:09,850 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) [2025-03-17 19:43:09,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:09,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-17 19:43:09,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:10,407 INFO L124 PetriNetUnfolderBase]: 6170/8895 cut-off events. [2025-03-17 19:43:10,408 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2025-03-17 19:43:10,422 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 49617 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. [2025-03-17 19:43:10,462 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 73 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2025-03-17 19:43:10,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 79 transitions, 402 flow [2025-03-17 19:43:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:10,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-03-17 19:43:10,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2025-03-17 19:43:10,467 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 181 flow. Second operand 3 states and 94 transitions. [2025-03-17 19:43:10,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 79 transitions, 402 flow [2025-03-17 19:43:10,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 395 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:10,472 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 181 flow [2025-03-17 19:43:10,472 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} [2025-03-17 19:43:10,473 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2025-03-17 19:43:10,473 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 181 flow [2025-03-17 19:43:10,473 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) [2025-03-17 19:43:10,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:10,474 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:10,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:43:10,474 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:43:10,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:10,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1893336744, now seen corresponding path program 1 times [2025-03-17 19:43:10,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:10,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900064543] [2025-03-17 19:43:10,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:10,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:10,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:43:10,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:43:10,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:10,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:10,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:10,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900064543] [2025-03-17 19:43:10,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900064543] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:10,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:10,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:43:10,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190790752] [2025-03-17 19:43:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:10,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:10,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:10,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:10,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:10,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-17 19:43:10,635 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) [2025-03-17 19:43:10,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:10,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-17 19:43:10,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:11,224 INFO L124 PetriNetUnfolderBase]: 7604/11078 cut-off events. [2025-03-17 19:43:11,224 INFO L125 PetriNetUnfolderBase]: For 1174/1174 co-relation queries the response was YES. [2025-03-17 19:43:11,245 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 63550 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. [2025-03-17 19:43:11,289 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 68 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2025-03-17 19:43:11,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 404 flow [2025-03-17 19:43:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2025-03-17 19:43:11,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2025-03-17 19:43:11,294 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 181 flow. Second operand 3 states and 92 transitions. [2025-03-17 19:43:11,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 404 flow [2025-03-17 19:43:11,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:11,297 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 189 flow [2025-03-17 19:43:11,297 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} [2025-03-17 19:43:11,298 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2025-03-17 19:43:11,298 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 189 flow [2025-03-17 19:43:11,298 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) [2025-03-17 19:43:11,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:11,298 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:11,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:43:11,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:43:11,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1112981437, now seen corresponding path program 1 times [2025-03-17 19:43:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:11,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702527920] [2025-03-17 19:43:11,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:11,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:11,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:11,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:11,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:11,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:11,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:11,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702527920] [2025-03-17 19:43:11,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702527920] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:11,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700144202] [2025-03-17 19:43:11,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:11,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:11,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:11,414 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) [2025-03-17 19:43:11,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:43:11,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:11,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:11,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:11,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:11,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:43:11,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:11,512 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:43:11,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700144202] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:11,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:43:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-17 19:43:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645942004] [2025-03-17 19:43:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:11,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:43:11,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:11,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:43:11,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:43:11,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-17 19:43:11,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:11,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:11,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-17 19:43:11,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:12,386 INFO L124 PetriNetUnfolderBase]: 11149/15875 cut-off events. [2025-03-17 19:43:12,387 INFO L125 PetriNetUnfolderBase]: For 2953/2953 co-relation queries the response was YES. [2025-03-17 19:43:12,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42938 conditions, 15875 events. 11149/15875 cut-off events. For 2953/2953 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 90053 event pairs, 4986 based on Foata normal form. 0/11008 useless extension candidates. Maximal degree in co-relation 40984. Up to 9778 conditions per place. [2025-03-17 19:43:12,467 INFO L140 encePairwiseOnDemand]: 32/51 looper letters, 61 selfloop transitions, 17 changer transitions 0/81 dead transitions. [2025-03-17 19:43:12,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 475 flow [2025-03-17 19:43:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:43:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:43:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-03-17 19:43:12,472 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-17 19:43:12,472 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 189 flow. Second operand 4 states and 102 transitions. [2025-03-17 19:43:12,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 475 flow [2025-03-17 19:43:12,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 81 transitions, 471 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:12,477 INFO L231 Difference]: Finished difference. Result has 54 places, 61 transitions, 373 flow [2025-03-17 19:43:12,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=373, PETRI_PLACES=54, PETRI_TRANSITIONS=61} [2025-03-17 19:43:12,478 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2025-03-17 19:43:12,479 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 61 transitions, 373 flow [2025-03-17 19:43:12,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:43:12,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:12,479 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:12,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:43:12,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:12,680 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:43:12,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1112981436, now seen corresponding path program 1 times [2025-03-17 19:43:12,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:12,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452393922] [2025-03-17 19:43:12,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:12,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:12,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:12,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:12,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:12,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452393922] [2025-03-17 19:43:12,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452393922] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:12,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263072219] [2025-03-17 19:43:12,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:12,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:12,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:12,763 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) [2025-03-17 19:43:12,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:43:12,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:12,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:12,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:12,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:12,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:43:12,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:12,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:12,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263072219] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:12,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:12,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2025-03-17 19:43:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986585176] [2025-03-17 19:43:12,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:12,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:43:12,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:12,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:43:12,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:43:12,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-17 19:43:12,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 61 transitions, 373 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) [2025-03-17 19:43:12,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:12,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-17 19:43:12,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:14,806 INFO L124 PetriNetUnfolderBase]: 25725/36368 cut-off events. [2025-03-17 19:43:14,806 INFO L125 PetriNetUnfolderBase]: For 33379/33379 co-relation queries the response was YES. [2025-03-17 19:43:14,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113007 conditions, 36368 events. 25725/36368 cut-off events. For 33379/33379 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 217684 event pairs, 1181 based on Foata normal form. 2563/28235 useless extension candidates. Maximal degree in co-relation 107356. Up to 15158 conditions per place. [2025-03-17 19:43:14,982 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 149 selfloop transitions, 51 changer transitions 0/203 dead transitions. [2025-03-17 19:43:14,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 203 transitions, 1517 flow [2025-03-17 19:43:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:43:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:43:14,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2025-03-17 19:43:14,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6535947712418301 [2025-03-17 19:43:14,984 INFO L175 Difference]: Start difference. First operand has 54 places, 61 transitions, 373 flow. Second operand 6 states and 200 transitions. [2025-03-17 19:43:14,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 203 transitions, 1517 flow [2025-03-17 19:43:15,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 203 transitions, 1424 flow, removed 46 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:15,004 INFO L231 Difference]: Finished difference. Result has 61 places, 109 transitions, 994 flow [2025-03-17 19:43:15,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=994, PETRI_PLACES=61, PETRI_TRANSITIONS=109} [2025-03-17 19:43:15,007 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2025-03-17 19:43:15,007 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 109 transitions, 994 flow [2025-03-17 19:43:15,007 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) [2025-03-17 19:43:15,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:15,008 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:15,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:43:15,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:15,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:43:15,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1112981435, now seen corresponding path program 1 times [2025-03-17 19:43:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:15,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771729258] [2025-03-17 19:43:15,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:15,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:15,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:15,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:15,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:15,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:15,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771729258] [2025-03-17 19:43:15,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771729258] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:15,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:43:15,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:43:15,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286845185] [2025-03-17 19:43:15,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:15,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:43:15,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:15,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:43:15,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:43:15,260 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-17 19:43:15,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 109 transitions, 994 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) [2025-03-17 19:43:15,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:15,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-17 19:43:15,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:17,034 INFO L124 PetriNetUnfolderBase]: 24358/34539 cut-off events. [2025-03-17 19:43:17,035 INFO L125 PetriNetUnfolderBase]: For 50775/50775 co-relation queries the response was YES. [2025-03-17 19:43:17,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115768 conditions, 34539 events. 24358/34539 cut-off events. For 50775/50775 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 214207 event pairs, 17901 based on Foata normal form. 0/25534 useless extension candidates. Maximal degree in co-relation 109815. Up to 34528 conditions per place. [2025-03-17 19:43:17,231 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 98 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2025-03-17 19:43:17,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 102 transitions, 1113 flow [2025-03-17 19:43:17,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:17,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-03-17 19:43:17,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3660130718954248 [2025-03-17 19:43:17,232 INFO L175 Difference]: Start difference. First operand has 61 places, 109 transitions, 994 flow. Second operand 3 states and 56 transitions. [2025-03-17 19:43:17,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 102 transitions, 1113 flow [2025-03-17 19:43:17,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 102 transitions, 1074 flow, removed 18 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:17,358 INFO L231 Difference]: Finished difference. Result has 61 places, 102 transitions, 878 flow [2025-03-17 19:43:17,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=878, PETRI_PLACES=61, PETRI_TRANSITIONS=102} [2025-03-17 19:43:17,358 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2025-03-17 19:43:17,358 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 102 transitions, 878 flow [2025-03-17 19:43:17,359 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) [2025-03-17 19:43:17,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:17,359 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:17,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:43:17,359 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:43:17,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:17,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1112981434, now seen corresponding path program 1 times [2025-03-17 19:43:17,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:17,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411877691] [2025-03-17 19:43:17,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:17,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:17,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:17,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:17,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:17,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:17,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:17,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411877691] [2025-03-17 19:43:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411877691] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:17,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041757994] [2025-03-17 19:43:17,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:17,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:17,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:17,436 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) [2025-03-17 19:43:17,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:43:17,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:43:17,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:43:17,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:17,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:17,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:43:17,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:17,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:17,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041757994] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:17,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:17,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-03-17 19:43:17,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403112966] [2025-03-17 19:43:17,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:17,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 19:43:17,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:17,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 19:43:17,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:43:17,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-17 19:43:17,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 102 transitions, 878 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) [2025-03-17 19:43:17,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:17,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-17 19:43:17,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:22,455 INFO L124 PetriNetUnfolderBase]: 60912/86501 cut-off events. [2025-03-17 19:43:22,456 INFO L125 PetriNetUnfolderBase]: For 143525/143525 co-relation queries the response was YES. [2025-03-17 19:43:22,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284721 conditions, 86501 events. 60912/86501 cut-off events. For 143525/143525 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 584933 event pairs, 4631 based on Foata normal form. 912/66029 useless extension candidates. Maximal degree in co-relation 284702. Up to 18381 conditions per place. [2025-03-17 19:43:22,891 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 343 selfloop transitions, 123 changer transitions 0/469 dead transitions. [2025-03-17 19:43:22,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 469 transitions, 4426 flow [2025-03-17 19:43:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:43:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:43:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 347 transitions. [2025-03-17 19:43:22,893 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6803921568627451 [2025-03-17 19:43:22,893 INFO L175 Difference]: Start difference. First operand has 61 places, 102 transitions, 878 flow. Second operand 10 states and 347 transitions. [2025-03-17 19:43:22,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 469 transitions, 4426 flow [2025-03-17 19:43:23,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 469 transitions, 4425 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:23,078 INFO L231 Difference]: Finished difference. Result has 76 places, 224 transitions, 2846 flow [2025-03-17 19:43:23,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2846, PETRI_PLACES=76, PETRI_TRANSITIONS=224} [2025-03-17 19:43:23,078 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2025-03-17 19:43:23,079 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 224 transitions, 2846 flow [2025-03-17 19:43:23,079 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) [2025-03-17 19:43:23,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:23,079 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:23,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 19:43:23,280 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 [2025-03-17 19:43:23,281 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:43:23,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:23,281 INFO L85 PathProgramCache]: Analyzing trace with hash -763073824, now seen corresponding path program 1 times [2025-03-17 19:43:23,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:23,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381424297] [2025-03-17 19:43:23,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:23,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:23,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:43:23,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:43:23,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:23,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:23,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:23,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381424297] [2025-03-17 19:43:23,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381424297] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:23,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554149972] [2025-03-17 19:43:23,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:23,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:23,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:23,343 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) [2025-03-17 19:43:23,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:43:23,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:43:23,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:43:23,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:23,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:23,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:43:23,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:23,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:43:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554149972] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:43:23,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:43:23,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2025-03-17 19:43:23,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973246257] [2025-03-17 19:43:23,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:43:23,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:43:23,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:23,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:43:23,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:43:23,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-17 19:43:23,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 224 transitions, 2846 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) [2025-03-17 19:43:23,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:23,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-17 19:43:23,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:29,265 INFO L124 PetriNetUnfolderBase]: 57050/81135 cut-off events. [2025-03-17 19:43:29,265 INFO L125 PetriNetUnfolderBase]: For 261291/261291 co-relation queries the response was YES. [2025-03-17 19:43:29,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294684 conditions, 81135 events. 57050/81135 cut-off events. For 261291/261291 co-relation queries the response was YES. Maximal size of possible extension queue 2238. Compared 567079 event pairs, 42191 based on Foata normal form. 0/63158 useless extension candidates. Maximal degree in co-relation 294657. Up to 81124 conditions per place. [2025-03-17 19:43:29,748 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 211 selfloop transitions, 1 changer transitions 0/215 dead transitions. [2025-03-17 19:43:29,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 215 transitions, 3161 flow [2025-03-17 19:43:29,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:43:29,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:43:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-03-17 19:43:29,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35947712418300654 [2025-03-17 19:43:29,749 INFO L175 Difference]: Start difference. First operand has 76 places, 224 transitions, 2846 flow. Second operand 3 states and 55 transitions. [2025-03-17 19:43:29,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 215 transitions, 3161 flow [2025-03-17 19:43:31,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 215 transitions, 3078 flow, removed 40 selfloop flow, removed 1 redundant places. [2025-03-17 19:43:31,755 INFO L231 Difference]: Finished difference. Result has 76 places, 215 transitions, 2656 flow [2025-03-17 19:43:31,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2656, PETRI_PLACES=76, PETRI_TRANSITIONS=215} [2025-03-17 19:43:31,756 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2025-03-17 19:43:31,756 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 215 transitions, 2656 flow [2025-03-17 19:43:31,756 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) [2025-03-17 19:43:31,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:43:31,756 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:43:31,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 19:43:31,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:31,960 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2025-03-17 19:43:31,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:43:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash -763073823, now seen corresponding path program 1 times [2025-03-17 19:43:31,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:43:31,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531357364] [2025-03-17 19:43:31,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:31,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:43:31,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:43:31,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:43:31,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:31,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:32,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:43:32,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531357364] [2025-03-17 19:43:32,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531357364] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:43:32,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702121502] [2025-03-17 19:43:32,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:43:32,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:43:32,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:43:32,030 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:43:32,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:43:32,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:43:32,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:43:32,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:43:32,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:43:32,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:43:32,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:43:32,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:32,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:43:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:43:32,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702121502] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:43:32,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:43:32,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2025-03-17 19:43:32,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684784018] [2025-03-17 19:43:32,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:43:32,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:43:32,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:43:32,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:43:32,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:43:32,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 51 [2025-03-17 19:43:32,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 215 transitions, 2656 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) [2025-03-17 19:43:32,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:43:32,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 51 [2025-03-17 19:43:32,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:43:47,385 INFO L124 PetriNetUnfolderBase]: 139205/199369 cut-off events. [2025-03-17 19:43:47,386 INFO L125 PetriNetUnfolderBase]: For 698594/698594 co-relation queries the response was YES. [2025-03-17 19:43:48,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703168 conditions, 199369 events. 139205/199369 cut-off events. For 698594/698594 co-relation queries the response was YES. Maximal size of possible extension queue 4245. Compared 1478096 event pairs, 35106 based on Foata normal form. 2335/163779 useless extension candidates. Maximal degree in co-relation 703140. Up to 48053 conditions per place.