./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-channel-sum.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 bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:27:51,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:27:51,802 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:27:51,808 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:27:51,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:27:51,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:27:51,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:27:51,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:27:51,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:27:51,838 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:27:51,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:27:51,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:27:51,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:27:51,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:27:51,840 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:27:51,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:27:51,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:27:51,841 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:27:51,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:27:51,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:27:51,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:27:51,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:27:51,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:27:51,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:27:51,841 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:27:51,842 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:27:51,842 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:27:51,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:27:51,842 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:27:51,842 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:27:51,842 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:27:51,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:27:51,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:27:51,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:27:51,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:27:51,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:27:51,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:27:51,843 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:27:51,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:27:51,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:27:51,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:27:51,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:27:51,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:27:51,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:27:51,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:27:51,844 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 -> bc55f480d2dabcba35697f502078f181c178ae095f610e1cdbc5d03f14d18670 [2025-03-04 15:27:52,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:27:52,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:27:52,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:27:52,087 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:27:52,087 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:27:52,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2025-03-04 15:27:53,269 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9628d55dd/ff530245b7714a3187d9a2a00dee3214/FLAGc720f9900 [2025-03-04 15:27:53,522 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:27:53,523 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-channel-sum.wvr.c [2025-03-04 15:27:53,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9628d55dd/ff530245b7714a3187d9a2a00dee3214/FLAGc720f9900 [2025-03-04 15:27:53,840 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9628d55dd/ff530245b7714a3187d9a2a00dee3214 [2025-03-04 15:27:53,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:27:53,842 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:27:53,843 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:27:53,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:27:53,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:27:53,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:27:53" (1/1) ... [2025-03-04 15:27:53,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a1a9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:53, skipping insertion in model container [2025-03-04 15:27:53,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:27:53" (1/1) ... [2025-03-04 15:27:53,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:27:53,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:27:53,997 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:27:54,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:27:54,032 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:27:54,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54 WrapperNode [2025-03-04 15:27:54,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:27:54,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:27:54,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:27:54,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:27:54,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,064 INFO L138 Inliner]: procedures = 21, calls = 22, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 140 [2025-03-04 15:27:54,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:27:54,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:27:54,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:27:54,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:27:54,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,082 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-04 15:27:54,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,086 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,086 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:27:54,094 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:27:54,094 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:27:54,094 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:27:54,095 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (1/1) ... [2025-03-04 15:27:54,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:27:54,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:54,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:27:54,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:27:54,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:27:54,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:27:54,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:27:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:27:54,144 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:27:54,216 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:27:54,218 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:27:54,416 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:27:54,416 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:27:54,569 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:27:54,569 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:27:54,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:27:54 BoogieIcfgContainer [2025-03-04 15:27:54,570 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:27:54,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:27:54,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:27:54,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:27:54,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:27:53" (1/3) ... [2025-03-04 15:27:54,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5564d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:27:54, skipping insertion in model container [2025-03-04 15:27:54,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:27:54" (2/3) ... [2025-03-04 15:27:54,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5564d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:27:54, skipping insertion in model container [2025-03-04 15:27:54,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:27:54" (3/3) ... [2025-03-04 15:27:54,580 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2025-03-04 15:27:54,589 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:27:54,591 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-channel-sum.wvr.c that has 3 procedures, 44 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-03-04 15:27:54,591 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:27:54,632 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:27:54,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2025-03-04 15:27:54,685 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2025-03-04 15:27:54,689 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:27:54,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 107 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-03-04 15:27:54,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2025-03-04 15:27:54,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 44 transitions, 97 flow [2025-03-04 15:27:54,702 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:27:54,716 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;@18701fcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:27:54,716 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-03-04 15:27:54,722 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:27:54,722 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2025-03-04 15:27:54,722 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:27:54,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:54,723 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:54,724 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:54,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1862209293, now seen corresponding path program 1 times [2025-03-04 15:27:54,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:54,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630485268] [2025-03-04 15:27:54,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:54,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:54,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:27:54,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:27:54,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:54,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:54,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:54,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630485268] [2025-03-04 15:27:54,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630485268] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:54,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:54,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:27:54,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262356097] [2025-03-04 15:27:54,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:54,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:54,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:54,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:54,971 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-03-04 15:27:54,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:54,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:54,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-03-04 15:27:54,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:55,165 INFO L124 PetriNetUnfolderBase]: 368/632 cut-off events. [2025-03-04 15:27:55,165 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-03-04 15:27:55,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 632 events. 368/632 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2860 event pairs, 277 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1131. Up to 570 conditions per place. [2025-03-04 15:27:55,171 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2025-03-04 15:27:55,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 173 flow [2025-03-04 15:27:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:55,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2025-03-04 15:27:55,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.453125 [2025-03-04 15:27:55,180 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 97 flow. Second operand 4 states and 87 transitions. [2025-03-04 15:27:55,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 173 flow [2025-03-04 15:27:55,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:27:55,186 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 119 flow [2025-03-04 15:27:55,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2025-03-04 15:27:55,189 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2025-03-04 15:27:55,190 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 119 flow [2025-03-04 15:27:55,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:55,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:55,190 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:55,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:27:55,191 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:55,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1015842694, now seen corresponding path program 1 times [2025-03-04 15:27:55,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:55,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656298275] [2025-03-04 15:27:55,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:55,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:55,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:27:55,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:27:55,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:55,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:55,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656298275] [2025-03-04 15:27:55,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656298275] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:55,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842533449] [2025-03-04 15:27:55,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:55,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:55,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:55,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:55,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:27:55,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:27:55,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:27:55,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:55,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:55,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:55,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:55,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:27:55,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842533449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:55,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:27:55,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:27:55,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716742179] [2025-03-04 15:27:55,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:55,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:27:55,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:55,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:27:55,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:27:55,397 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-03-04 15:27:55,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:55,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:55,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-03-04 15:27:55,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:55,566 INFO L124 PetriNetUnfolderBase]: 368/631 cut-off events. [2025-03-04 15:27:55,566 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-04 15:27:55,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 631 events. 368/631 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2888 event pairs, 277 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1205. Up to 565 conditions per place. [2025-03-04 15:27:55,575 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 28 selfloop transitions, 7 changer transitions 0/45 dead transitions. [2025-03-04 15:27:55,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 185 flow [2025-03-04 15:27:55,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:27:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:27:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-03-04 15:27:55,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-03-04 15:27:55,576 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 119 flow. Second operand 6 states and 108 transitions. [2025-03-04 15:27:55,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 185 flow [2025-03-04 15:27:55,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:55,578 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 126 flow [2025-03-04 15:27:55,578 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2025-03-04 15:27:55,579 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2025-03-04 15:27:55,579 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 126 flow [2025-03-04 15:27:55,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:55,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:55,579 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:55,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:27:55,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:55,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:55,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:55,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1018547445, now seen corresponding path program 1 times [2025-03-04 15:27:55,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:55,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108349759] [2025-03-04 15:27:55,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:55,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:55,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:27:55,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:27:55,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:55,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:55,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:55,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108349759] [2025-03-04 15:27:55,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108349759] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:55,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:55,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:27:55,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126560543] [2025-03-04 15:27:55,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:55,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:27:55,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:55,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:27:55,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:27:55,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-04 15:27:55,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:55,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:55,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-04 15:27:55,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:55,953 INFO L124 PetriNetUnfolderBase]: 364/661 cut-off events. [2025-03-04 15:27:55,953 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2025-03-04 15:27:55,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1304 conditions, 661 events. 364/661 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2921 event pairs, 160 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 1274. Up to 432 conditions per place. [2025-03-04 15:27:55,958 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 41 selfloop transitions, 6 changer transitions 2/60 dead transitions. [2025-03-04 15:27:55,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 255 flow [2025-03-04 15:27:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:27:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:27:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2025-03-04 15:27:55,959 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2025-03-04 15:27:55,959 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 126 flow. Second operand 3 states and 89 transitions. [2025-03-04 15:27:55,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 255 flow [2025-03-04 15:27:55,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 233 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-03-04 15:27:55,961 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 142 flow [2025-03-04 15:27:55,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2025-03-04 15:27:55,962 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2025-03-04 15:27:55,962 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 142 flow [2025-03-04 15:27:55,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:55,962 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:55,962 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:55,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:27:55,962 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:55,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1426352771, now seen corresponding path program 1 times [2025-03-04 15:27:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:55,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533084619] [2025-03-04 15:27:55,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:55,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:27:55,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:27:55,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:55,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:56,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:56,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:56,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533084619] [2025-03-04 15:27:56,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533084619] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:56,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25728593] [2025-03-04 15:27:56,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:56,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:56,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:56,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:56,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:27:56,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:27:56,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:27:56,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:56,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:56,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:56,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:56,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:56,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25728593] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:56,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:56,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:27:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625902517] [2025-03-04 15:27:56,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:56,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:27:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:56,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:27:56,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:27:56,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-03-04 15:27:56,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 142 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:56,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:56,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-03-04 15:27:56,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:56,340 INFO L124 PetriNetUnfolderBase]: 367/745 cut-off events. [2025-03-04 15:27:56,341 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2025-03-04 15:27:56,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 745 events. 367/745 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3586 event pairs, 256 based on Foata normal form. 3/588 useless extension candidates. Maximal degree in co-relation 1568. Up to 620 conditions per place. [2025-03-04 15:27:56,345 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 34 selfloop transitions, 13 changer transitions 0/57 dead transitions. [2025-03-04 15:27:56,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 266 flow [2025-03-04 15:27:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:27:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:27:56,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2025-03-04 15:27:56,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34791666666666665 [2025-03-04 15:27:56,348 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 142 flow. Second operand 10 states and 167 transitions. [2025-03-04 15:27:56,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 266 flow [2025-03-04 15:27:56,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:27:56,351 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 204 flow [2025-03-04 15:27:56,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2025-03-04 15:27:56,351 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-03-04 15:27:56,351 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 204 flow [2025-03-04 15:27:56,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:56,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:56,352 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:56,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 15:27:56,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-04 15:27:56,553 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:56,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2090437596, now seen corresponding path program 1 times [2025-03-04 15:27:56,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:56,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536831923] [2025-03-04 15:27:56,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:56,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:27:56,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:27:56,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:56,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:56,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:56,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536831923] [2025-03-04 15:27:56,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536831923] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:56,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:56,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:27:56,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80501738] [2025-03-04 15:27:56,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:56,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:27:56,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:56,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:27:56,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:27:56,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-04 15:27:56,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:56,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:56,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-04 15:27:56,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:56,691 INFO L124 PetriNetUnfolderBase]: 315/590 cut-off events. [2025-03-04 15:27:56,692 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2025-03-04 15:27:56,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 590 events. 315/590 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2684 event pairs, 112 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 1289. Up to 474 conditions per place. [2025-03-04 15:27:56,694 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 46 selfloop transitions, 3 changer transitions 2/62 dead transitions. [2025-03-04 15:27:56,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 319 flow [2025-03-04 15:27:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:27:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:27:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-03-04 15:27:56,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-04 15:27:56,695 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 204 flow. Second operand 3 states and 80 transitions. [2025-03-04 15:27:56,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 319 flow [2025-03-04 15:27:56,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 308 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-04 15:27:56,697 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 202 flow [2025-03-04 15:27:56,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2025-03-04 15:27:56,697 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2025-03-04 15:27:56,698 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 202 flow [2025-03-04 15:27:56,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:56,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:56,698 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:56,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:27:56,698 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:56,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2090437595, now seen corresponding path program 1 times [2025-03-04 15:27:56,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:56,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707353140] [2025-03-04 15:27:56,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:56,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:56,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:27:56,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:27:56,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:56,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:56,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707353140] [2025-03-04 15:27:56,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707353140] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:56,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:56,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:27:56,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119108153] [2025-03-04 15:27:56,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:56,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:56,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:56,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:56,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:56,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-04 15:27:56,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:56,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:56,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-04 15:27:56,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:56,880 INFO L124 PetriNetUnfolderBase]: 337/659 cut-off events. [2025-03-04 15:27:56,880 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-03-04 15:27:56,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 659 events. 337/659 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3029 event pairs, 245 based on Foata normal form. 5/543 useless extension candidates. Maximal degree in co-relation 1454. Up to 538 conditions per place. [2025-03-04 15:27:56,883 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 41 selfloop transitions, 3 changer transitions 11/66 dead transitions. [2025-03-04 15:27:56,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 338 flow [2025-03-04 15:27:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:56,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2025-03-04 15:27:56,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515625 [2025-03-04 15:27:56,885 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 202 flow. Second operand 4 states and 99 transitions. [2025-03-04 15:27:56,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 338 flow [2025-03-04 15:27:56,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 66 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:56,886 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 206 flow [2025-03-04 15:27:56,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2025-03-04 15:27:56,887 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2025-03-04 15:27:56,887 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 206 flow [2025-03-04 15:27:56,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:56,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:56,887 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:56,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:27:56,887 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:56,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:56,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1813176882, now seen corresponding path program 1 times [2025-03-04 15:27:56,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:56,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309521336] [2025-03-04 15:27:56,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:56,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:56,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:27:56,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:27:56,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:56,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:57,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309521336] [2025-03-04 15:27:57,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309521336] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192741650] [2025-03-04 15:27:57,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:57,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:57,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:57,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:57,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:27:57,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 15:27:57,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 15:27:57,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:57,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:57,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 15:27:57,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:27:57,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:27:57,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192741650] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:57,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:27:57,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2025-03-04 15:27:57,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476091697] [2025-03-04 15:27:57,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:57,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:57,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:57,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:57,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-04 15:27:57,115 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-04 15:27:57,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:57,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:57,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-04 15:27:57,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:57,215 INFO L124 PetriNetUnfolderBase]: 255/504 cut-off events. [2025-03-04 15:27:57,215 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2025-03-04 15:27:57,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 504 events. 255/504 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2189 event pairs, 107 based on Foata normal form. 40/440 useless extension candidates. Maximal degree in co-relation 1113. Up to 292 conditions per place. [2025-03-04 15:27:57,217 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 39 selfloop transitions, 8 changer transitions 4/62 dead transitions. [2025-03-04 15:27:57,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 329 flow [2025-03-04 15:27:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-03-04 15:27:57,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.484375 [2025-03-04 15:27:57,219 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 206 flow. Second operand 4 states and 93 transitions. [2025-03-04 15:27:57,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 329 flow [2025-03-04 15:27:57,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 319 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-04 15:27:57,221 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 204 flow [2025-03-04 15:27:57,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2025-03-04 15:27:57,222 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2025-03-04 15:27:57,222 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 204 flow [2025-03-04 15:27:57,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:57,222 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:57,222 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:57,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:57,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:57,427 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:57,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash -277632906, now seen corresponding path program 2 times [2025-03-04 15:27:57,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:57,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708557044] [2025-03-04 15:27:57,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:27:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:57,437 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-04 15:27:57,442 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-03-04 15:27:57,442 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:27:57,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:27:57,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:57,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708557044] [2025-03-04 15:27:57,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708557044] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:57,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789838571] [2025-03-04 15:27:57,466 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:27:57,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:57,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:57,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:57,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:27:57,510 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-04 15:27:57,517 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-03-04 15:27:57,517 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:27:57,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:57,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 15:27:57,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:27:57,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:27:57,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789838571] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:57,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:57,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-04 15:27:57,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617622197] [2025-03-04 15:27:57,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:57,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:27:57,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:57,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:27:57,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:27:57,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-03-04 15:27:57,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:57,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:57,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-03-04 15:27:57,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:57,666 INFO L124 PetriNetUnfolderBase]: 228/461 cut-off events. [2025-03-04 15:27:57,666 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2025-03-04 15:27:57,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 461 events. 228/461 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1951 event pairs, 157 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1056. Up to 389 conditions per place. [2025-03-04 15:27:57,670 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 26 selfloop transitions, 15 changer transitions 0/51 dead transitions. [2025-03-04 15:27:57,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 276 flow [2025-03-04 15:27:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:27:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:27:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-03-04 15:27:57,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2025-03-04 15:27:57,672 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 204 flow. Second operand 4 states and 76 transitions. [2025-03-04 15:27:57,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 276 flow [2025-03-04 15:27:57,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 250 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-04 15:27:57,675 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 198 flow [2025-03-04 15:27:57,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2025-03-04 15:27:57,676 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2025-03-04 15:27:57,677 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 198 flow [2025-03-04 15:27:57,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:57,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:57,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:57,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:57,878 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 [2025-03-04 15:27:57,879 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:57,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash -998270382, now seen corresponding path program 1 times [2025-03-04 15:27:57,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:57,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839667088] [2025-03-04 15:27:57,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:57,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:27:57,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:27:57,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:57,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:27:57,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:57,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839667088] [2025-03-04 15:27:57,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839667088] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:57,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:27:57,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:27:57,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249969362] [2025-03-04 15:27:57,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:57,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:27:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:57,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:27:57,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:27:57,932 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-04 15:27:57,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:57,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:57,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-04 15:27:57,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:58,000 INFO L124 PetriNetUnfolderBase]: 239/534 cut-off events. [2025-03-04 15:27:58,000 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2025-03-04 15:27:58,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 534 events. 239/534 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2335 event pairs, 65 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 1070. Up to 273 conditions per place. [2025-03-04 15:27:58,004 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 49 selfloop transitions, 3 changer transitions 2/64 dead transitions. [2025-03-04 15:27:58,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 64 transitions, 347 flow [2025-03-04 15:27:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:27:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:27:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2025-03-04 15:27:58,005 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-03-04 15:27:58,005 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 198 flow. Second operand 3 states and 81 transitions. [2025-03-04 15:27:58,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 64 transitions, 347 flow [2025-03-04 15:27:58,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 317 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:27:58,008 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 181 flow [2025-03-04 15:27:58,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-03-04 15:27:58,010 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2025-03-04 15:27:58,010 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 181 flow [2025-03-04 15:27:58,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:58,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:58,011 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:58,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 15:27:58,011 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:58,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1450778961, now seen corresponding path program 1 times [2025-03-04 15:27:58,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:58,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501049075] [2025-03-04 15:27:58,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:58,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:58,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:27:58,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:27:58,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:58,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:58,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:58,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501049075] [2025-03-04 15:27:58,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501049075] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:58,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299692117] [2025-03-04 15:27:58,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:58,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:58,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:58,138 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) [2025-03-04 15:27:58,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:27:58,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 15:27:58,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 15:27:58,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:58,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:58,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:27:58,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:58,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:27:58,246 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:27:58,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299692117] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:27:58,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:27:58,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-04 15:27:58,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914998901] [2025-03-04 15:27:58,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:27:58,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:27:58,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:58,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:27:58,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:27:58,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-04 15:27:58,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:58,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:58,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-04 15:27:58,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:27:58,374 INFO L124 PetriNetUnfolderBase]: 299/650 cut-off events. [2025-03-04 15:27:58,375 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-03-04 15:27:58,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 650 events. 299/650 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2927 event pairs, 50 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 1356. Up to 210 conditions per place. [2025-03-04 15:27:58,377 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 63 selfloop transitions, 11 changer transitions 4/88 dead transitions. [2025-03-04 15:27:58,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 436 flow [2025-03-04 15:27:58,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:27:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:27:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2025-03-04 15:27:58,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2025-03-04 15:27:58,379 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 181 flow. Second operand 6 states and 149 transitions. [2025-03-04 15:27:58,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 436 flow [2025-03-04 15:27:58,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:27:58,380 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 233 flow [2025-03-04 15:27:58,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2025-03-04 15:27:58,381 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2025-03-04 15:27:58,381 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 233 flow [2025-03-04 15:27:58,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:58,381 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:27:58,381 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:27:58,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 15:27:58,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-04 15:27:58,586 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:27:58,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:27:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1665803122, now seen corresponding path program 1 times [2025-03-04 15:27:58,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:27:58,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188849635] [2025-03-04 15:27:58,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:27:58,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 15:27:58,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 15:27:58,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:58,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:59,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:27:59,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188849635] [2025-03-04 15:27:59,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188849635] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:27:59,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230631516] [2025-03-04 15:27:59,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:27:59,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:27:59,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:27:59,032 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:27:59,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:27:59,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-04 15:27:59,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-04 15:27:59,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:27:59,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:27:59,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 15:27:59,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:27:59,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:27:59,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-04 15:27:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:59,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:27:59,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2025-03-04 15:27:59,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2025-03-04 15:27:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:27:59,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230631516] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:27:59,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:27:59,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 25 [2025-03-04 15:27:59,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910957191] [2025-03-04 15:27:59,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:27:59,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-04 15:27:59,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:27:59,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-04 15:27:59,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2025-03-04 15:27:59,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-04 15:27:59,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 233 flow. Second operand has 27 states, 27 states have (on average 10.925925925925926) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:27:59,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:27:59,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-04 15:27:59,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:01,679 INFO L124 PetriNetUnfolderBase]: 1185/2274 cut-off events. [2025-03-04 15:28:01,680 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2025-03-04 15:28:01,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 2274 events. 1185/2274 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13739 event pairs, 160 based on Foata normal form. 10/2062 useless extension candidates. Maximal degree in co-relation 4861. Up to 400 conditions per place. [2025-03-04 15:28:01,692 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 186 selfloop transitions, 54 changer transitions 27/274 dead transitions. [2025-03-04 15:28:01,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 274 transitions, 1468 flow [2025-03-04 15:28:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-04 15:28:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-03-04 15:28:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 525 transitions. [2025-03-04 15:28:01,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2025-03-04 15:28:01,697 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 233 flow. Second operand 30 states and 525 transitions. [2025-03-04 15:28:01,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 274 transitions, 1468 flow [2025-03-04 15:28:01,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 274 transitions, 1463 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:28:01,703 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 644 flow [2025-03-04 15:28:01,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=644, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2025-03-04 15:28:01,705 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2025-03-04 15:28:01,705 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 644 flow [2025-03-04 15:28:01,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.925925925925926) internal successors, (295), 27 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:01,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:01,706 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:01,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 15:28:01,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:01,906 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:01,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash -145554638, now seen corresponding path program 1 times [2025-03-04 15:28:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:01,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133885040] [2025-03-04 15:28:01,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:01,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:01,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 15:28:01,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 15:28:01,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:01,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:28:01,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133885040] [2025-03-04 15:28:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133885040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:28:01,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:28:01,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:28:01,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617428938] [2025-03-04 15:28:01,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:01,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:28:01,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:01,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:28:01,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:28:01,981 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-04 15:28:01,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 644 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:01,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:01,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-04 15:28:01,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:02,159 INFO L124 PetriNetUnfolderBase]: 892/1837 cut-off events. [2025-03-04 15:28:02,159 INFO L125 PetriNetUnfolderBase]: For 4007/4024 co-relation queries the response was YES. [2025-03-04 15:28:02,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6192 conditions, 1837 events. 892/1837 cut-off events. For 4007/4024 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11188 event pairs, 370 based on Foata normal form. 6/1842 useless extension candidates. Maximal degree in co-relation 6056. Up to 1454 conditions per place. [2025-03-04 15:28:02,172 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 86 selfloop transitions, 2 changer transitions 7/106 dead transitions. [2025-03-04 15:28:02,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 106 transitions, 932 flow [2025-03-04 15:28:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:28:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:28:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2025-03-04 15:28:02,173 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-03-04 15:28:02,173 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 644 flow. Second operand 3 states and 81 transitions. [2025-03-04 15:28:02,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 106 transitions, 932 flow [2025-03-04 15:28:02,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 106 transitions, 871 flow, removed 19 selfloop flow, removed 8 redundant places. [2025-03-04 15:28:02,189 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 522 flow [2025-03-04 15:28:02,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2025-03-04 15:28:02,190 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2025-03-04 15:28:02,190 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 522 flow [2025-03-04 15:28:02,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:02,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:02,190 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:02,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 15:28:02,191 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:02,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:02,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1565049577, now seen corresponding path program 1 times [2025-03-04 15:28:02,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:02,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905988140] [2025-03-04 15:28:02,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:02,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:02,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 15:28:02,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:28:02,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:02,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:28:02,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:02,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905988140] [2025-03-04 15:28:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905988140] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:28:02,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:28:02,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:28:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137942973] [2025-03-04 15:28:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:02,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:28:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:02,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:28:02,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:28:02,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2025-03-04 15:28:02,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:02,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:02,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2025-03-04 15:28:02,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:02,525 INFO L124 PetriNetUnfolderBase]: 1431/2889 cut-off events. [2025-03-04 15:28:02,525 INFO L125 PetriNetUnfolderBase]: For 6070/6130 co-relation queries the response was YES. [2025-03-04 15:28:02,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9784 conditions, 2889 events. 1431/2889 cut-off events. For 6070/6130 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 18296 event pairs, 398 based on Foata normal form. 32/2898 useless extension candidates. Maximal degree in co-relation 8740. Up to 1046 conditions per place. [2025-03-04 15:28:02,540 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 92 selfloop transitions, 26 changer transitions 3/134 dead transitions. [2025-03-04 15:28:02,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 1118 flow [2025-03-04 15:28:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:28:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:28:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2025-03-04 15:28:02,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-03-04 15:28:02,543 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 522 flow. Second operand 4 states and 110 transitions. [2025-03-04 15:28:02,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 1118 flow [2025-03-04 15:28:02,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 134 transitions, 1116 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:28:02,553 INFO L231 Difference]: Finished difference. Result has 101 places, 101 transitions, 819 flow [2025-03-04 15:28:02,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=819, PETRI_PLACES=101, PETRI_TRANSITIONS=101} [2025-03-04 15:28:02,554 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 55 predicate places. [2025-03-04 15:28:02,554 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 101 transitions, 819 flow [2025-03-04 15:28:02,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:02,554 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:02,554 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:02,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 15:28:02,554 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:02,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:02,555 INFO L85 PathProgramCache]: Analyzing trace with hash 354704587, now seen corresponding path program 1 times [2025-03-04 15:28:02,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:02,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700130530] [2025-03-04 15:28:02,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:02,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:02,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:28:02,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:28:02,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:02,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:03,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700130530] [2025-03-04 15:28:03,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700130530] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:03,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573800168] [2025-03-04 15:28:03,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:03,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:03,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:03,189 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:03,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 15:28:03,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:28:03,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:28:03,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:03,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:03,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 15:28:03,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:28:03,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:03,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:28:03,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-03-04 15:28:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 15:28:03,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573800168] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:03,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-04 15:28:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 6] total 22 [2025-03-04 15:28:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258740106] [2025-03-04 15:28:03,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:03,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:28:03,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:03,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:28:03,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2025-03-04 15:28:03,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-03-04 15:28:03,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 101 transitions, 819 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:03,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:03,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-03-04 15:28:03,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:03,803 INFO L124 PetriNetUnfolderBase]: 1720/3391 cut-off events. [2025-03-04 15:28:03,803 INFO L125 PetriNetUnfolderBase]: For 9551/9575 co-relation queries the response was YES. [2025-03-04 15:28:03,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12414 conditions, 3391 events. 1720/3391 cut-off events. For 9551/9575 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 21667 event pairs, 242 based on Foata normal form. 42/3392 useless extension candidates. Maximal degree in co-relation 11146. Up to 1567 conditions per place. [2025-03-04 15:28:03,828 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 116 selfloop transitions, 18 changer transitions 5/150 dead transitions. [2025-03-04 15:28:03,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 150 transitions, 1467 flow [2025-03-04 15:28:03,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:28:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:28:03,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2025-03-04 15:28:03,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-03-04 15:28:03,829 INFO L175 Difference]: Start difference. First operand has 101 places, 101 transitions, 819 flow. Second operand 7 states and 154 transitions. [2025-03-04 15:28:03,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 150 transitions, 1467 flow [2025-03-04 15:28:03,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 150 transitions, 1455 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-04 15:28:03,846 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 892 flow [2025-03-04 15:28:03,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2025-03-04 15:28:03,847 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2025-03-04 15:28:03,847 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 892 flow [2025-03-04 15:28:03,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:03,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:03,847 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:03,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 15:28:04,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:04,048 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:04,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:04,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1140167598, now seen corresponding path program 2 times [2025-03-04 15:28:04,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:04,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104726097] [2025-03-04 15:28:04,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:04,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:04,054 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-04 15:28:04,063 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-04 15:28:04,063 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:04,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-04 15:28:04,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:04,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104726097] [2025-03-04 15:28:04,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104726097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:28:04,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:28:04,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:28:04,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306427327] [2025-03-04 15:28:04,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:04,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 15:28:04,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:04,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 15:28:04,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-04 15:28:04,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-04 15:28:04,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 892 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:04,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:04,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-04 15:28:04,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:04,549 INFO L124 PetriNetUnfolderBase]: 1735/3464 cut-off events. [2025-03-04 15:28:04,550 INFO L125 PetriNetUnfolderBase]: For 11789/11837 co-relation queries the response was YES. [2025-03-04 15:28:04,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13593 conditions, 3464 events. 1735/3464 cut-off events. For 11789/11837 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 21480 event pairs, 145 based on Foata normal form. 46/3477 useless extension candidates. Maximal degree in co-relation 11686. Up to 777 conditions per place. [2025-03-04 15:28:04,579 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 135 selfloop transitions, 22 changer transitions 4/173 dead transitions. [2025-03-04 15:28:04,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 173 transitions, 1764 flow [2025-03-04 15:28:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:28:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:28:04,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2025-03-04 15:28:04,582 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-03-04 15:28:04,582 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 892 flow. Second operand 8 states and 188 transitions. [2025-03-04 15:28:04,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 173 transitions, 1764 flow [2025-03-04 15:28:04,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 173 transitions, 1709 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-03-04 15:28:04,640 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 927 flow [2025-03-04 15:28:04,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=927, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2025-03-04 15:28:04,641 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 69 predicate places. [2025-03-04 15:28:04,641 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 927 flow [2025-03-04 15:28:04,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:04,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:04,642 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:04,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-04 15:28:04,642 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:04,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash -221228072, now seen corresponding path program 1 times [2025-03-04 15:28:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:04,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818810764] [2025-03-04 15:28:04,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:04,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-04 15:28:04,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 15:28:04,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:04,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:04,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:04,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818810764] [2025-03-04 15:28:04,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818810764] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:04,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019774421] [2025-03-04 15:28:04,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:04,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:04,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:04,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:04,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 15:28:04,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-04 15:28:04,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-04 15:28:04,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:04,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:04,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-04 15:28:04,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:28:04,919 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:28:05,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019774421] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:05,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:05,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2025-03-04 15:28:05,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282673360] [2025-03-04 15:28:05,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:05,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-04 15:28:05,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:05,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-04 15:28:05,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2025-03-04 15:28:05,060 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-03-04 15:28:05,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 927 flow. Second operand has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:05,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:05,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-03-04 15:28:05,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:05,546 INFO L124 PetriNetUnfolderBase]: 1126/2372 cut-off events. [2025-03-04 15:28:05,546 INFO L125 PetriNetUnfolderBase]: For 9239/9251 co-relation queries the response was YES. [2025-03-04 15:28:05,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9072 conditions, 2372 events. 1126/2372 cut-off events. For 9239/9251 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13635 event pairs, 392 based on Foata normal form. 11/2354 useless extension candidates. Maximal degree in co-relation 8879. Up to 895 conditions per place. [2025-03-04 15:28:05,561 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 52 selfloop transitions, 22 changer transitions 27/114 dead transitions. [2025-03-04 15:28:05,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1025 flow [2025-03-04 15:28:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 15:28:05,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-04 15:28:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2025-03-04 15:28:05,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36217948717948717 [2025-03-04 15:28:05,562 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 927 flow. Second operand 13 states and 226 transitions. [2025-03-04 15:28:05,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1025 flow [2025-03-04 15:28:05,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 114 transitions, 940 flow, removed 22 selfloop flow, removed 11 redundant places. [2025-03-04 15:28:05,576 INFO L231 Difference]: Finished difference. Result has 113 places, 74 transitions, 584 flow [2025-03-04 15:28:05,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=113, PETRI_TRANSITIONS=74} [2025-03-04 15:28:05,577 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2025-03-04 15:28:05,577 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 74 transitions, 584 flow [2025-03-04 15:28:05,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.7) internal successors, (294), 20 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:05,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:05,578 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:05,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:05,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-04 15:28:05,782 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:05,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:05,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1855140109, now seen corresponding path program 1 times [2025-03-04 15:28:05,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:05,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427522067] [2025-03-04 15:28:05,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:05,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:05,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 15:28:05,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 15:28:05,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:05,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:05,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:05,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427522067] [2025-03-04 15:28:05,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427522067] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:05,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096779133] [2025-03-04 15:28:05,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:05,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:05,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:05,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:05,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 15:28:05,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 15:28:06,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 15:28:06,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:06,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:06,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 15:28:06,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:06,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:06,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096779133] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:06,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:06,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2025-03-04 15:28:06,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851944685] [2025-03-04 15:28:06,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:06,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-04 15:28:06,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:06,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-04 15:28:06,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2025-03-04 15:28:06,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-03-04 15:28:06,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 74 transitions, 584 flow. Second operand has 28 states, 28 states have (on average 14.571428571428571) internal successors, (408), 28 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:06,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:06,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-03-04 15:28:06,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:07,402 INFO L124 PetriNetUnfolderBase]: 2672/5370 cut-off events. [2025-03-04 15:28:07,402 INFO L125 PetriNetUnfolderBase]: For 19825/19867 co-relation queries the response was YES. [2025-03-04 15:28:07,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20264 conditions, 5370 events. 2672/5370 cut-off events. For 19825/19867 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 37047 event pairs, 246 based on Foata normal form. 206/5550 useless extension candidates. Maximal degree in co-relation 19396. Up to 846 conditions per place. [2025-03-04 15:28:07,440 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 235 selfloop transitions, 72 changer transitions 14/334 dead transitions. [2025-03-04 15:28:07,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 334 transitions, 2928 flow [2025-03-04 15:28:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-04 15:28:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-03-04 15:28:07,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 589 transitions. [2025-03-04 15:28:07,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4382440476190476 [2025-03-04 15:28:07,445 INFO L175 Difference]: Start difference. First operand has 113 places, 74 transitions, 584 flow. Second operand 28 states and 589 transitions. [2025-03-04 15:28:07,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 334 transitions, 2928 flow [2025-03-04 15:28:07,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 334 transitions, 2773 flow, removed 44 selfloop flow, removed 14 redundant places. [2025-03-04 15:28:07,482 INFO L231 Difference]: Finished difference. Result has 131 places, 125 transitions, 1398 flow [2025-03-04 15:28:07,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1398, PETRI_PLACES=131, PETRI_TRANSITIONS=125} [2025-03-04 15:28:07,482 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 85 predicate places. [2025-03-04 15:28:07,482 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 125 transitions, 1398 flow [2025-03-04 15:28:07,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.571428571428571) internal successors, (408), 28 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:07,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:07,483 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:07,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:07,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-04 15:28:07,684 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:07,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:07,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1427791290, now seen corresponding path program 1 times [2025-03-04 15:28:07,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:07,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951160442] [2025-03-04 15:28:07,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:07,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:07,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 15:28:07,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:28:07,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:07,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:08,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:08,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951160442] [2025-03-04 15:28:08,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951160442] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:08,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720312601] [2025-03-04 15:28:08,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:08,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:08,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:08,338 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:08,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 15:28:08,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-04 15:28:08,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-04 15:28:08,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:08,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:08,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-04 15:28:08,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:08,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:28:09,015 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2025-03-04 15:28:09,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2025-03-04 15:28:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:09,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:09,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 52 [2025-03-04 15:28:09,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:28:09,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 99 [2025-03-04 15:28:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:09,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720312601] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:09,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:09,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2025-03-04 15:28:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530615148] [2025-03-04 15:28:09,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:09,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-03-04 15:28:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:09,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-03-04 15:28:09,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1871, Unknown=0, NotChecked=0, Total=2162 [2025-03-04 15:28:10,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-04 15:28:10,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 125 transitions, 1398 flow. Second operand has 47 states, 47 states have (on average 10.787234042553191) internal successors, (507), 47 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:10,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:10,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-04 15:28:10,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:17,841 INFO L124 PetriNetUnfolderBase]: 9712/17510 cut-off events. [2025-03-04 15:28:17,841 INFO L125 PetriNetUnfolderBase]: For 89485/89485 co-relation queries the response was YES. [2025-03-04 15:28:17,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70273 conditions, 17510 events. 9712/17510 cut-off events. For 89485/89485 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 132058 event pairs, 635 based on Foata normal form. 1070/18558 useless extension candidates. Maximal degree in co-relation 62981. Up to 3208 conditions per place. [2025-03-04 15:28:17,950 INFO L140 encePairwiseOnDemand]: 29/48 looper letters, 471 selfloop transitions, 440 changer transitions 118/1037 dead transitions. [2025-03-04 15:28:17,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 1037 transitions, 11377 flow [2025-03-04 15:28:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2025-03-04 15:28:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2025-03-04 15:28:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 1594 transitions. [2025-03-04 15:28:17,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33208333333333334 [2025-03-04 15:28:17,953 INFO L175 Difference]: Start difference. First operand has 131 places, 125 transitions, 1398 flow. Second operand 100 states and 1594 transitions. [2025-03-04 15:28:17,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 1037 transitions, 11377 flow [2025-03-04 15:28:18,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1037 transitions, 10874 flow, removed 243 selfloop flow, removed 7 redundant places. [2025-03-04 15:28:18,253 INFO L231 Difference]: Finished difference. Result has 276 places, 563 transitions, 8206 flow [2025-03-04 15:28:18,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=100, PETRI_FLOW=8206, PETRI_PLACES=276, PETRI_TRANSITIONS=563} [2025-03-04 15:28:18,255 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 230 predicate places. [2025-03-04 15:28:18,255 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 563 transitions, 8206 flow [2025-03-04 15:28:18,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 10.787234042553191) internal successors, (507), 47 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:18,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:18,256 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:18,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:18,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 15:28:18,456 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:18,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:18,457 INFO L85 PathProgramCache]: Analyzing trace with hash -213514982, now seen corresponding path program 1 times [2025-03-04 15:28:18,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:18,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285407539] [2025-03-04 15:28:18,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:18,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:18,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 15:28:18,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 15:28:18,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:18,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:28:19,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285407539] [2025-03-04 15:28:19,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285407539] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:19,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385000432] [2025-03-04 15:28:19,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:19,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:19,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:19,003 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:19,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-04 15:28:19,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 15:28:19,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 15:28:19,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:19,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:19,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-04 15:28:19,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:19,342 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-04 15:28:19,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2025-03-04 15:28:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:28:19,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:19,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:28:19,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2025-03-04 15:28:20,083 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:28:20,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385000432] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:20,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:20,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 42 [2025-03-04 15:28:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543144743] [2025-03-04 15:28:20,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:20,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-04 15:28:20,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:20,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-04 15:28:20,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1589, Unknown=0, NotChecked=0, Total=1806 [2025-03-04 15:28:20,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-03-04 15:28:20,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 563 transitions, 8206 flow. Second operand has 43 states, 43 states have (on average 11.767441860465116) internal successors, (506), 43 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:20,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:20,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-03-04 15:28:20,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:23,880 INFO L124 PetriNetUnfolderBase]: 3900/7627 cut-off events. [2025-03-04 15:28:23,880 INFO L125 PetriNetUnfolderBase]: For 188018/188254 co-relation queries the response was YES. [2025-03-04 15:28:23,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47645 conditions, 7627 events. 3900/7627 cut-off events. For 188018/188254 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 54862 event pairs, 296 based on Foata normal form. 357/7948 useless extension candidates. Maximal degree in co-relation 47554. Up to 2229 conditions per place. [2025-03-04 15:28:23,947 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 306 selfloop transitions, 192 changer transitions 40/551 dead transitions. [2025-03-04 15:28:23,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 551 transitions, 8182 flow [2025-03-04 15:28:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-04 15:28:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-04 15:28:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 614 transitions. [2025-03-04 15:28:23,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34572072072072074 [2025-03-04 15:28:23,949 INFO L175 Difference]: Start difference. First operand has 276 places, 563 transitions, 8206 flow. Second operand 37 states and 614 transitions. [2025-03-04 15:28:23,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 551 transitions, 8182 flow [2025-03-04 15:28:24,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 551 transitions, 7134 flow, removed 425 selfloop flow, removed 35 redundant places. [2025-03-04 15:28:24,331 INFO L231 Difference]: Finished difference. Result has 267 places, 375 transitions, 5312 flow [2025-03-04 15:28:24,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4006, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5312, PETRI_PLACES=267, PETRI_TRANSITIONS=375} [2025-03-04 15:28:24,332 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 221 predicate places. [2025-03-04 15:28:24,332 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 375 transitions, 5312 flow [2025-03-04 15:28:24,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.767441860465116) internal successors, (506), 43 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:24,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:24,332 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:24,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-04 15:28:24,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:24,533 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:24,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2009719494, now seen corresponding path program 1 times [2025-03-04 15:28:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:24,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192471879] [2025-03-04 15:28:24,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:28:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:24,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-04 15:28:24,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 15:28:24,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:28:24,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-04 15:28:24,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:24,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192471879] [2025-03-04 15:28:24,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192471879] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:28:24,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:28:24,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 15:28:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125504600] [2025-03-04 15:28:24,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:24,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:28:24,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:24,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:28:24,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:28:24,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2025-03-04 15:28:24,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 375 transitions, 5312 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:24,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:24,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2025-03-04 15:28:24,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:26,408 INFO L124 PetriNetUnfolderBase]: 4577/9333 cut-off events. [2025-03-04 15:28:26,409 INFO L125 PetriNetUnfolderBase]: For 232531/232877 co-relation queries the response was YES. [2025-03-04 15:28:26,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58477 conditions, 9333 events. 4577/9333 cut-off events. For 232531/232877 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 71338 event pairs, 854 based on Foata normal form. 420/9721 useless extension candidates. Maximal degree in co-relation 58393. Up to 4154 conditions per place. [2025-03-04 15:28:26,500 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 412 selfloop transitions, 4 changer transitions 19/452 dead transitions. [2025-03-04 15:28:26,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 452 transitions, 7602 flow [2025-03-04 15:28:26,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:28:26,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:28:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-03-04 15:28:26,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-03-04 15:28:26,501 INFO L175 Difference]: Start difference. First operand has 267 places, 375 transitions, 5312 flow. Second operand 4 states and 94 transitions. [2025-03-04 15:28:26,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 452 transitions, 7602 flow [2025-03-04 15:28:26,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 452 transitions, 7025 flow, removed 162 selfloop flow, removed 21 redundant places. [2025-03-04 15:28:26,940 INFO L231 Difference]: Finished difference. Result has 245 places, 341 transitions, 4463 flow [2025-03-04 15:28:26,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4541, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4463, PETRI_PLACES=245, PETRI_TRANSITIONS=341} [2025-03-04 15:28:26,941 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 199 predicate places. [2025-03-04 15:28:26,941 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 341 transitions, 4463 flow [2025-03-04 15:28:26,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:26,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:26,941 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:26,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-04 15:28:26,941 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:26,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:26,942 INFO L85 PathProgramCache]: Analyzing trace with hash -757621500, now seen corresponding path program 2 times [2025-03-04 15:28:26,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:26,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269812285] [2025-03-04 15:28:26,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:26,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:26,947 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-03-04 15:28:26,954 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 15:28:26,955 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:26,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 15:28:27,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:27,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269812285] [2025-03-04 15:28:27,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269812285] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:27,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836871749] [2025-03-04 15:28:27,603 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:27,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:27,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:27,606 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:27,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-04 15:28:27,648 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-03-04 15:28:27,667 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 15:28:27,667 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:27,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:27,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-03-04 15:28:27,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:27,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:28:28,158 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:28,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:28,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-03-04 15:28:28,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:28:28,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 139 [2025-03-04 15:28:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:29,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836871749] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:29,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:29,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 50 [2025-03-04 15:28:29,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836830577] [2025-03-04 15:28:29,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:29,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-03-04 15:28:29,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:29,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-03-04 15:28:29,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2260, Unknown=0, NotChecked=0, Total=2652 [2025-03-04 15:28:29,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-03-04 15:28:29,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 341 transitions, 4463 flow. Second operand has 52 states, 52 states have (on average 11.557692307692308) internal successors, (601), 52 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:29,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:29,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-03-04 15:28:29,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:36,512 INFO L124 PetriNetUnfolderBase]: 4318/8433 cut-off events. [2025-03-04 15:28:36,512 INFO L125 PetriNetUnfolderBase]: For 176278/176490 co-relation queries the response was YES. [2025-03-04 15:28:36,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52578 conditions, 8433 events. 4318/8433 cut-off events. For 176278/176490 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 59978 event pairs, 246 based on Foata normal form. 390/8804 useless extension candidates. Maximal degree in co-relation 52497. Up to 2425 conditions per place. [2025-03-04 15:28:36,591 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 361 selfloop transitions, 480 changer transitions 85/940 dead transitions. [2025-03-04 15:28:36,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 940 transitions, 12914 flow [2025-03-04 15:28:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2025-03-04 15:28:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2025-03-04 15:28:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 2014 transitions. [2025-03-04 15:28:36,596 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3178661616161616 [2025-03-04 15:28:36,596 INFO L175 Difference]: Start difference. First operand has 245 places, 341 transitions, 4463 flow. Second operand 132 states and 2014 transitions. [2025-03-04 15:28:36,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 940 transitions, 12914 flow [2025-03-04 15:28:36,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 940 transitions, 11314 flow, removed 735 selfloop flow, removed 23 redundant places. [2025-03-04 15:28:36,853 INFO L231 Difference]: Finished difference. Result has 356 places, 551 transitions, 8656 flow [2025-03-04 15:28:36,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=132, PETRI_FLOW=8656, PETRI_PLACES=356, PETRI_TRANSITIONS=551} [2025-03-04 15:28:36,854 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 310 predicate places. [2025-03-04 15:28:36,854 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 551 transitions, 8656 flow [2025-03-04 15:28:36,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 11.557692307692308) internal successors, (601), 52 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:36,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:36,854 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:36,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:37,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-04 15:28:37,055 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:37,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:37,055 INFO L85 PathProgramCache]: Analyzing trace with hash 72377028, now seen corresponding path program 3 times [2025-03-04 15:28:37,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:37,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915607540] [2025-03-04 15:28:37,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:28:37,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:37,061 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 4 equivalence classes. [2025-03-04 15:28:37,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 36 of 37 statements. [2025-03-04 15:28:37,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-04 15:28:37,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-04 15:28:37,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:37,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915607540] [2025-03-04 15:28:37,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915607540] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:28:37,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:28:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-04 15:28:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957397614] [2025-03-04 15:28:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:28:37,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-04 15:28:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:37,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-04 15:28:37,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-03-04 15:28:37,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2025-03-04 15:28:37,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 551 transitions, 8656 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:37,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:37,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2025-03-04 15:28:37,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:39,121 INFO L124 PetriNetUnfolderBase]: 5204/10109 cut-off events. [2025-03-04 15:28:39,121 INFO L125 PetriNetUnfolderBase]: For 225110/225428 co-relation queries the response was YES. [2025-03-04 15:28:39,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67810 conditions, 10109 events. 5204/10109 cut-off events. For 225110/225428 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 71363 event pairs, 785 based on Foata normal form. 376/10435 useless extension candidates. Maximal degree in co-relation 67727. Up to 4603 conditions per place. [2025-03-04 15:28:39,214 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 563 selfloop transitions, 220 changer transitions 14/811 dead transitions. [2025-03-04 15:28:39,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 811 transitions, 14473 flow [2025-03-04 15:28:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 15:28:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-04 15:28:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 308 transitions. [2025-03-04 15:28:39,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-03-04 15:28:39,217 INFO L175 Difference]: Start difference. First operand has 356 places, 551 transitions, 8656 flow. Second operand 14 states and 308 transitions. [2025-03-04 15:28:39,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 811 transitions, 14473 flow [2025-03-04 15:28:40,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 811 transitions, 12350 flow, removed 854 selfloop flow, removed 28 redundant places. [2025-03-04 15:28:40,033 INFO L231 Difference]: Finished difference. Result has 334 places, 646 transitions, 9710 flow [2025-03-04 15:28:40,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7156, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9710, PETRI_PLACES=334, PETRI_TRANSITIONS=646} [2025-03-04 15:28:40,034 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 288 predicate places. [2025-03-04 15:28:40,034 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 646 transitions, 9710 flow [2025-03-04 15:28:40,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:40,035 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:40,035 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:40,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-04 15:28:40,035 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:40,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:40,035 INFO L85 PathProgramCache]: Analyzing trace with hash 458793622, now seen corresponding path program 4 times [2025-03-04 15:28:40,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:40,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567234557] [2025-03-04 15:28:40,036 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:40,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:40,044 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-03-04 15:28:40,062 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 15:28:40,062 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:40,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:40,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:40,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567234557] [2025-03-04 15:28:40,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567234557] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:40,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271946085] [2025-03-04 15:28:40,592 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 15:28:40,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:40,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:40,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:40,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-04 15:28:40,633 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-03-04 15:28:40,650 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 15:28:40,650 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 15:28:40,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:40,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-03-04 15:28:40,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:40,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-04 15:28:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:41,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:41,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2025-03-04 15:28:41,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:28:41,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 143 [2025-03-04 15:28:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:41,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271946085] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:41,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:41,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 48 [2025-03-04 15:28:41,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510951187] [2025-03-04 15:28:41,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:41,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-03-04 15:28:41,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:41,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-03-04 15:28:41,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=2098, Unknown=0, NotChecked=0, Total=2450 [2025-03-04 15:28:42,126 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-03-04 15:28:42,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 646 transitions, 9710 flow. Second operand has 50 states, 50 states have (on average 11.62) internal successors, (581), 50 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:42,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:42,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-03-04 15:28:42,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:47,254 INFO L124 PetriNetUnfolderBase]: 5932/11467 cut-off events. [2025-03-04 15:28:47,255 INFO L125 PetriNetUnfolderBase]: For 248684/249086 co-relation queries the response was YES. [2025-03-04 15:28:47,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76033 conditions, 11467 events. 5932/11467 cut-off events. For 248684/249086 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 83392 event pairs, 603 based on Foata normal form. 432/11842 useless extension candidates. Maximal degree in co-relation 75949. Up to 5262 conditions per place. [2025-03-04 15:28:47,393 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 412 selfloop transitions, 592 changer transitions 35/1053 dead transitions. [2025-03-04 15:28:47,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 1053 transitions, 16253 flow [2025-03-04 15:28:47,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-03-04 15:28:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2025-03-04 15:28:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 1195 transitions. [2025-03-04 15:28:47,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3111979166666667 [2025-03-04 15:28:47,395 INFO L175 Difference]: Start difference. First operand has 334 places, 646 transitions, 9710 flow. Second operand 80 states and 1195 transitions. [2025-03-04 15:28:47,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 1053 transitions, 16253 flow [2025-03-04 15:28:48,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 1053 transitions, 15869 flow, removed 42 selfloop flow, removed 7 redundant places. [2025-03-04 15:28:48,654 INFO L231 Difference]: Finished difference. Result has 420 places, 817 transitions, 13664 flow [2025-03-04 15:28:48,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9462, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=424, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=13664, PETRI_PLACES=420, PETRI_TRANSITIONS=817} [2025-03-04 15:28:48,655 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 374 predicate places. [2025-03-04 15:28:48,655 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 817 transitions, 13664 flow [2025-03-04 15:28:48,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 11.62) internal successors, (581), 50 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:48,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:48,655 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:48,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-04 15:28:48,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-03-04 15:28:48,856 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:48,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash -154364210, now seen corresponding path program 5 times [2025-03-04 15:28:48,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:48,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103689846] [2025-03-04 15:28:48,857 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:28:48,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:48,861 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-03-04 15:28:48,871 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 15:28:48,871 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-04 15:28:48,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:49,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103689846] [2025-03-04 15:28:49,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103689846] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262981888] [2025-03-04 15:28:49,455 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-04 15:28:49,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:49,457 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:49,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-04 15:28:49,497 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-03-04 15:28:49,512 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-03-04 15:28:49,512 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-04 15:28:49,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:49,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 15:28:49,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:28:49,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:49,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:28:49,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 53 [2025-03-04 15:28:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-04 15:28:49,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262981888] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:49,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:49,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 9] total 35 [2025-03-04 15:28:49,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108652447] [2025-03-04 15:28:49,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:49,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-04 15:28:49,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:49,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-04 15:28:49,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2025-03-04 15:28:50,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2025-03-04 15:28:50,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 817 transitions, 13664 flow. Second operand has 37 states, 37 states have (on average 12.135135135135135) internal successors, (449), 37 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:50,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:50,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2025-03-04 15:28:50,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:28:54,900 INFO L124 PetriNetUnfolderBase]: 6924/13403 cut-off events. [2025-03-04 15:28:54,900 INFO L125 PetriNetUnfolderBase]: For 328473/328945 co-relation queries the response was YES. [2025-03-04 15:28:55,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94485 conditions, 13403 events. 6924/13403 cut-off events. For 328473/328945 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 101739 event pairs, 205 based on Foata normal form. 596/13987 useless extension candidates. Maximal degree in co-relation 94382. Up to 3116 conditions per place. [2025-03-04 15:28:55,103 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 653 selfloop transitions, 627 changer transitions 38/1332 dead transitions. [2025-03-04 15:28:55,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 1332 transitions, 22927 flow [2025-03-04 15:28:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-03-04 15:28:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2025-03-04 15:28:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 1164 transitions. [2025-03-04 15:28:55,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3321917808219178 [2025-03-04 15:28:55,105 INFO L175 Difference]: Start difference. First operand has 420 places, 817 transitions, 13664 flow. Second operand 73 states and 1164 transitions. [2025-03-04 15:28:55,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 1332 transitions, 22927 flow [2025-03-04 15:28:57,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 1332 transitions, 22156 flow, removed 246 selfloop flow, removed 33 redundant places. [2025-03-04 15:28:57,452 INFO L231 Difference]: Finished difference. Result has 465 places, 973 transitions, 17636 flow [2025-03-04 15:28:57,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13036, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=477, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=17636, PETRI_PLACES=465, PETRI_TRANSITIONS=973} [2025-03-04 15:28:57,453 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 419 predicate places. [2025-03-04 15:28:57,453 INFO L471 AbstractCegarLoop]: Abstraction has has 465 places, 973 transitions, 17636 flow [2025-03-04 15:28:57,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 12.135135135135135) internal successors, (449), 37 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:57,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:28:57,453 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:28:57,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-04 15:28:57,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:57,654 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:28:57,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:28:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash -240426659, now seen corresponding path program 2 times [2025-03-04 15:28:57,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:28:57,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654392379] [2025-03-04 15:28:57,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:57,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:28:57,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-04 15:28:57,671 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 15:28:57,671 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:57,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:58,517 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:28:58,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:28:58,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654392379] [2025-03-04 15:28:58,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654392379] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:28:58,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910207337] [2025-03-04 15:28:58,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:28:58,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:28:58,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:28:58,519 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:28:58,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-04 15:28:58,559 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-04 15:28:58,574 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 15:28:58,574 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 15:28:58,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:28:58,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-04 15:28:58,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:28:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-04 15:28:58,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:28:58,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:28:58,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2025-03-04 15:28:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 15:28:59,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910207337] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:28:59,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:28:59,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 9] total 40 [2025-03-04 15:28:59,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761683160] [2025-03-04 15:28:59,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:28:59,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-04 15:28:59,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:28:59,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-04 15:28:59,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1491, Unknown=0, NotChecked=0, Total=1722 [2025-03-04 15:28:59,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2025-03-04 15:28:59,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 973 transitions, 17636 flow. Second operand has 42 states, 42 states have (on average 11.0) internal successors, (462), 42 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:28:59,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:28:59,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2025-03-04 15:28:59,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:05,446 INFO L124 PetriNetUnfolderBase]: 10585/19510 cut-off events. [2025-03-04 15:29:05,447 INFO L125 PetriNetUnfolderBase]: For 481331/481331 co-relation queries the response was YES. [2025-03-04 15:29:05,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137091 conditions, 19510 events. 10585/19510 cut-off events. For 481331/481331 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 151855 event pairs, 745 based on Foata normal form. 432/19894 useless extension candidates. Maximal degree in co-relation 136982. Up to 5307 conditions per place. [2025-03-04 15:29:05,728 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 719 selfloop transitions, 794 changer transitions 12/1534 dead transitions. [2025-03-04 15:29:05,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1534 transitions, 28746 flow [2025-03-04 15:29:05,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-03-04 15:29:05,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2025-03-04 15:29:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 974 transitions. [2025-03-04 15:29:05,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3170572916666667 [2025-03-04 15:29:05,730 INFO L175 Difference]: Start difference. First operand has 465 places, 973 transitions, 17636 flow. Second operand 64 states and 974 transitions. [2025-03-04 15:29:05,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1534 transitions, 28746 flow [2025-03-04 15:29:09,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1534 transitions, 26929 flow, removed 244 selfloop flow, removed 51 redundant places. [2025-03-04 15:29:09,192 INFO L231 Difference]: Finished difference. Result has 489 places, 1175 transitions, 22338 flow [2025-03-04 15:29:09,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=15772, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=22338, PETRI_PLACES=489, PETRI_TRANSITIONS=1175} [2025-03-04 15:29:09,192 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 443 predicate places. [2025-03-04 15:29:09,193 INFO L471 AbstractCegarLoop]: Abstraction has has 489 places, 1175 transitions, 22338 flow [2025-03-04 15:29:09,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 11.0) internal successors, (462), 42 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:09,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:29:09,193 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:29:09,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-04 15:29:09,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:09,394 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2025-03-04 15:29:09,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:29:09,394 INFO L85 PathProgramCache]: Analyzing trace with hash -704646395, now seen corresponding path program 3 times [2025-03-04 15:29:09,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:29:09,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361337582] [2025-03-04 15:29:09,395 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:29:09,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:29:09,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-03-04 15:29:09,408 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 39 statements. [2025-03-04 15:29:09,408 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-04 15:29:09,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 15:29:09,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:29:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361337582] [2025-03-04 15:29:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361337582] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:29:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314573877] [2025-03-04 15:29:09,607 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:29:09,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:29:09,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:29:09,609 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:29:09,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-04 15:29:09,657 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 4 equivalence classes. [2025-03-04 15:29:09,675 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 39 statements. [2025-03-04 15:29:09,675 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-04 15:29:09,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:29:09,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-04 15:29:09,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:29:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 15:29:09,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:29:10,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 15:29:10,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2025-03-04 15:29:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-04 15:29:10,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314573877] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:29:10,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:29:10,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2025-03-04 15:29:10,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361650188] [2025-03-04 15:29:10,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:29:10,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-04 15:29:10,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:29:10,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-04 15:29:10,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-03-04 15:29:10,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2025-03-04 15:29:10,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1175 transitions, 22338 flow. Second operand has 27 states, 27 states have (on average 13.37037037037037) internal successors, (361), 27 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:29:10,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:29:10,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2025-03-04 15:29:10,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:29:19,918 INFO L124 PetriNetUnfolderBase]: 15019/27422 cut-off events. [2025-03-04 15:29:19,919 INFO L125 PetriNetUnfolderBase]: For 646857/646857 co-relation queries the response was YES. [2025-03-04 15:29:20,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202605 conditions, 27422 events. 15019/27422 cut-off events. For 646857/646857 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 224364 event pairs, 1107 based on Foata normal form. 278/27609 useless extension candidates. Maximal degree in co-relation 202489. Up to 6608 conditions per place. [2025-03-04 15:29:20,662 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 973 selfloop transitions, 1101 changer transitions 24/2107 dead transitions. [2025-03-04 15:29:20,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 2107 transitions, 41118 flow [2025-03-04 15:29:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-03-04 15:29:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2025-03-04 15:29:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 1322 transitions. [2025-03-04 15:29:20,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3721846846846847 [2025-03-04 15:29:20,664 INFO L175 Difference]: Start difference. First operand has 489 places, 1175 transitions, 22338 flow. Second operand 74 states and 1322 transitions. [2025-03-04 15:29:20,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 2107 transitions, 41118 flow