./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed 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-two-queue.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 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:44:16,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:44:16,786 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:44:16,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:44:16,794 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:44:16,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:44:16,815 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:44:16,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:44:16,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:44:16,815 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:44:16,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:44:16,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:44:16,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:44:16,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:44:16,816 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:44:16,817 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:44:16,817 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:44:16,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:44:16,817 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 -> 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 [2025-03-09 06:44:17,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:44:17,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:44:17,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:44:17,061 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:44:17,061 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:44:17,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2025-03-09 06:44:18,238 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df385b769/e7de40597caa4607913f5110e0f3791a/FLAG0d2932d38 [2025-03-09 06:44:18,502 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:44:18,505 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2025-03-09 06:44:18,512 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df385b769/e7de40597caa4607913f5110e0f3791a/FLAG0d2932d38 [2025-03-09 06:44:18,525 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df385b769/e7de40597caa4607913f5110e0f3791a [2025-03-09 06:44:18,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:44:18,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:44:18,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:44:18,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:44:18,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:44:18,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596afd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18, skipping insertion in model container [2025-03-09 06:44:18,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:44:18,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:44:18,698 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:44:18,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:44:18,732 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:44:18,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18 WrapperNode [2025-03-09 06:44:18,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:44:18,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:44:18,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:44:18,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:44:18,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,757 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 204 [2025-03-09 06:44:18,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:44:18,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:44:18,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:44:18,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:44:18,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,765 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,777 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-09 06:44:18,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,783 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:44:18,791 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:44:18,791 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:44:18,791 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:44:18,795 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (1/1) ... [2025-03-09 06:44:18,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:44:18,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:18,819 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) [2025-03-09 06:44:18,822 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 [2025-03-09 06:44:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:44:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:44:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:44:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:44:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:44:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:44:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:44:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:44:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:44:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:44:18,842 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:44:18,909 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:44:18,911 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:44:19,211 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:44:19,212 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:44:19,451 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:44:19,451 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:44:19,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:44:19 BoogieIcfgContainer [2025-03-09 06:44:19,452 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:44:19,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:44:19,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:44:19,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:44:19,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:44:18" (1/3) ... [2025-03-09 06:44:19,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139750be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:44:19, skipping insertion in model container [2025-03-09 06:44:19,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:44:18" (2/3) ... [2025-03-09 06:44:19,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139750be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:44:19, skipping insertion in model container [2025-03-09 06:44:19,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:44:19" (3/3) ... [2025-03-09 06:44:19,461 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2025-03-09 06:44:19,474 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:44:19,475 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-two-queue.wvr.c that has 3 procedures, 47 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2025-03-09 06:44:19,475 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:44:19,520 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:44:19,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 114 flow [2025-03-09 06:44:19,574 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2025-03-09 06:44:19,578 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:44:19,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 4/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 130 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-03-09 06:44:19,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 114 flow [2025-03-09 06:44:19,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 46 transitions, 101 flow [2025-03-09 06:44:19,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:44:19,600 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;@1d4b3b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:44:19,600 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2025-03-09 06:44:19,605 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:44:19,607 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:44:19,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:44:19,607 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:19,607 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:44:19,608 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:19,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:19,612 INFO L85 PathProgramCache]: Analyzing trace with hash 572275, now seen corresponding path program 1 times [2025-03-09 06:44:19,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:19,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470090624] [2025-03-09 06:44:19,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:19,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:19,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:44:19,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:44:19,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:19,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470090624] [2025-03-09 06:44:19,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470090624] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:19,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:19,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:44:19,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26616073] [2025-03-09 06:44:19,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:19,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:19,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:19,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:19,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:19,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-03-09 06:44:19,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-09 06:44:19,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:19,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-03-09 06:44:19,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:20,029 INFO L124 PetriNetUnfolderBase]: 215/476 cut-off events. [2025-03-09 06:44:20,030 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-09 06:44:20,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 476 events. 215/476 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2544 event pairs, 128 based on Foata normal form. 2/341 useless extension candidates. Maximal degree in co-relation 755. Up to 338 conditions per place. [2025-03-09 06:44:20,035 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 27 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2025-03-09 06:44:20,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 173 flow [2025-03-09 06:44:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-03-09 06:44:20,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53 [2025-03-09 06:44:20,049 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 101 flow. Second operand 4 states and 106 transitions. [2025-03-09 06:44:20,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 173 flow [2025-03-09 06:44:20,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:20,054 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 148 flow [2025-03-09 06:44:20,056 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2025-03-09 06:44:20,059 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2025-03-09 06:44:20,059 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 148 flow [2025-03-09 06:44:20,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-09 06:44:20,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:20,060 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:44:20,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:44:20,060 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:20,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash -130708122, now seen corresponding path program 1 times [2025-03-09 06:44:20,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:20,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76549644] [2025-03-09 06:44:20,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:20,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:20,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:44:20,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:44:20,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:20,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:20,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:20,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:20,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76549644] [2025-03-09 06:44:20,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76549644] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:20,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161655996] [2025-03-09 06:44:20,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:20,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:20,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:20,191 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) [2025-03-09 06:44:20,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:44:20,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:44:20,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:44:20,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:20,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:20,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:44:20,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:20,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:44:20,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161655996] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:20,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:44:20,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:44:20,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573331283] [2025-03-09 06:44:20,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:20,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:44:20,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:20,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:44:20,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:44:20,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-03-09 06:44:20,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2025-03-09 06:44:20,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:20,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-03-09 06:44:20,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:20,428 INFO L124 PetriNetUnfolderBase]: 215/474 cut-off events. [2025-03-09 06:44:20,429 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-03-09 06:44:20,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 474 events. 215/474 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2523 event pairs, 128 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 806. Up to 328 conditions per place. [2025-03-09 06:44:20,433 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 20 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2025-03-09 06:44:20,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 204 flow [2025-03-09 06:44:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:44:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:44:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2025-03-09 06:44:20,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2025-03-09 06:44:20,436 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 148 flow. Second operand 6 states and 130 transitions. [2025-03-09 06:44:20,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 204 flow [2025-03-09 06:44:20,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:44:20,439 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 164 flow [2025-03-09 06:44:20,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2025-03-09 06:44:20,440 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2025-03-09 06:44:20,440 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 164 flow [2025-03-09 06:44:20,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2025-03-09 06:44:20,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:20,441 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:44:20,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:44:20,645 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 [2025-03-09 06:44:20,645 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:20,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:20,645 INFO L85 PathProgramCache]: Analyzing trace with hash 243016032, now seen corresponding path program 1 times [2025-03-09 06:44:20,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:20,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359560633] [2025-03-09 06:44:20,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:20,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:20,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:44:20,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:44:20,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:20,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:20,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:20,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359560633] [2025-03-09 06:44:20,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359560633] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:20,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380177701] [2025-03-09 06:44:20,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:20,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:20,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:20,765 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) [2025-03-09 06:44:20,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:44:20,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:44:20,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:44:20,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:20,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:20,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:44:20,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:20,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:20,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380177701] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:20,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:20,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:44:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814221544] [2025-03-09 06:44:20,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:20,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:44:20,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:20,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:44:20,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:44:20,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-03-09 06:44:20,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 164 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2025-03-09 06:44:20,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:20,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-03-09 06:44:20,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:21,086 INFO L124 PetriNetUnfolderBase]: 221/498 cut-off events. [2025-03-09 06:44:21,086 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2025-03-09 06:44:21,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 498 events. 221/498 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2697 event pairs, 128 based on Foata normal form. 6/369 useless extension candidates. Maximal degree in co-relation 808. Up to 339 conditions per place. [2025-03-09 06:44:21,091 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 25 changer transitions 0/64 dead transitions. [2025-03-09 06:44:21,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 378 flow [2025-03-09 06:44:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:44:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:44:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2025-03-09 06:44:21,093 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.432 [2025-03-09 06:44:21,093 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 164 flow. Second operand 10 states and 216 transitions. [2025-03-09 06:44:21,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 378 flow [2025-03-09 06:44:21,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 64 transitions, 320 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-09 06:44:21,095 INFO L231 Difference]: Finished difference. Result has 58 places, 64 transitions, 304 flow [2025-03-09 06:44:21,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=304, PETRI_PLACES=58, PETRI_TRANSITIONS=64} [2025-03-09 06:44:21,096 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2025-03-09 06:44:21,096 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 64 transitions, 304 flow [2025-03-09 06:44:21,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2025-03-09 06:44:21,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:21,097 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:21,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:21,297 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,SelfDestructingSolverStorable2 [2025-03-09 06:44:21,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:21,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash 279366524, now seen corresponding path program 1 times [2025-03-09 06:44:21,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:21,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125620747] [2025-03-09 06:44:21,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:21,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:21,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:44:21,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:44:21,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:21,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:21,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:21,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125620747] [2025-03-09 06:44:21,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125620747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:21,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:21,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:44:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287099099] [2025-03-09 06:44:21,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:21,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:21,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:21,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:21,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:21,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2025-03-09 06:44:21,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 64 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-09 06:44:21,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:21,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2025-03-09 06:44:21,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:21,505 INFO L124 PetriNetUnfolderBase]: 238/546 cut-off events. [2025-03-09 06:44:21,505 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2025-03-09 06:44:21,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 546 events. 238/546 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2943 event pairs, 146 based on Foata normal form. 13/424 useless extension candidates. Maximal degree in co-relation 989. Up to 350 conditions per place. [2025-03-09 06:44:21,509 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 48 selfloop transitions, 7 changer transitions 2/73 dead transitions. [2025-03-09 06:44:21,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 440 flow [2025-03-09 06:44:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2025-03-09 06:44:21,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-03-09 06:44:21,512 INFO L175 Difference]: Start difference. First operand has 58 places, 64 transitions, 304 flow. Second operand 4 states and 120 transitions. [2025-03-09 06:44:21,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 440 flow [2025-03-09 06:44:21,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 416 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-09 06:44:21,537 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 303 flow [2025-03-09 06:44:21,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=303, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2025-03-09 06:44:21,537 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2025-03-09 06:44:21,538 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 303 flow [2025-03-09 06:44:21,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2025-03-09 06:44:21,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:21,538 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:21,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:44:21,538 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:21,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2139790397, now seen corresponding path program 1 times [2025-03-09 06:44:21,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:21,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484589196] [2025-03-09 06:44:21,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:21,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:21,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:44:21,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:44:21,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:21,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:21,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:21,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484589196] [2025-03-09 06:44:21,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484589196] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:21,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:21,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:44:21,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371756192] [2025-03-09 06:44:21,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:21,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:21,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:21,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:21,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:21,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2025-03-09 06:44:21,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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) [2025-03-09 06:44:21,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:21,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2025-03-09 06:44:21,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:21,738 INFO L124 PetriNetUnfolderBase]: 269/651 cut-off events. [2025-03-09 06:44:21,738 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2025-03-09 06:44:21,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 651 events. 269/651 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3672 event pairs, 174 based on Foata normal form. 12/516 useless extension candidates. Maximal degree in co-relation 1296. Up to 396 conditions per place. [2025-03-09 06:44:21,742 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 64 selfloop transitions, 4 changer transitions 4/88 dead transitions. [2025-03-09 06:44:21,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 571 flow [2025-03-09 06:44:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:44:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:44:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2025-03-09 06:44:21,743 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584 [2025-03-09 06:44:21,743 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 303 flow. Second operand 5 states and 146 transitions. [2025-03-09 06:44:21,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 571 flow [2025-03-09 06:44:21,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 564 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:44:21,746 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 328 flow [2025-03-09 06:44:21,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2025-03-09 06:44:21,749 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2025-03-09 06:44:21,749 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 328 flow [2025-03-09 06:44:21,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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) [2025-03-09 06:44:21,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:21,750 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:21,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:44:21,750 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:21,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2107460661, now seen corresponding path program 1 times [2025-03-09 06:44:21,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:21,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99358733] [2025-03-09 06:44:21,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:21,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:21,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:44:21,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:44:21,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:21,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:21,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:21,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99358733] [2025-03-09 06:44:21,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99358733] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:21,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687611066] [2025-03-09 06:44:21,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:21,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:21,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:21,862 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) [2025-03-09 06:44:21,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:44:21,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:44:21,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:44:21,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:21,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:21,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:44:21,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:21,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:44:21,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687611066] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:21,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:44:21,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-03-09 06:44:21,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308687948] [2025-03-09 06:44:21,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:21,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:44:21,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:21,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:44:21,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:44:21,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2025-03-09 06:44:21,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-03-09 06:44:21,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:21,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2025-03-09 06:44:21,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:21,989 INFO L124 PetriNetUnfolderBase]: 196/510 cut-off events. [2025-03-09 06:44:21,990 INFO L125 PetriNetUnfolderBase]: For 174/198 co-relation queries the response was YES. [2025-03-09 06:44:21,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 510 events. 196/510 cut-off events. For 174/198 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2788 event pairs, 124 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 1052. Up to 359 conditions per place. [2025-03-09 06:44:21,992 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 46 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2025-03-09 06:44:21,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 414 flow [2025-03-09 06:44:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:44:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:44:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2025-03-09 06:44:21,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2025-03-09 06:44:21,993 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 328 flow. Second operand 3 states and 84 transitions. [2025-03-09 06:44:21,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 414 flow [2025-03-09 06:44:21,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 401 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-09 06:44:21,995 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 309 flow [2025-03-09 06:44:21,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2025-03-09 06:44:21,996 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2025-03-09 06:44:21,996 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 309 flow [2025-03-09 06:44:21,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-03-09 06:44:21,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:21,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:22,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:22,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:22,196 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:22,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash -744428560, now seen corresponding path program 1 times [2025-03-09 06:44:22,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:22,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335706515] [2025-03-09 06:44:22,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:22,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:22,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:44:22,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:44:22,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:22,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:22,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:22,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335706515] [2025-03-09 06:44:22,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335706515] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:22,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737421442] [2025-03-09 06:44:22,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:22,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:22,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:22,360 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) [2025-03-09 06:44:22,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:44:22,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:44:22,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:44:22,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:22,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:22,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:44:22,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:22,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:44:22,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737421442] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:22,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:44:22,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-03-09 06:44:22,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461600915] [2025-03-09 06:44:22,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:22,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:44:22,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:22,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:44:22,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:44:22,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2025-03-09 06:44:22,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2025-03-09 06:44:22,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:22,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2025-03-09 06:44:22,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:22,484 INFO L124 PetriNetUnfolderBase]: 142/406 cut-off events. [2025-03-09 06:44:22,484 INFO L125 PetriNetUnfolderBase]: For 151/159 co-relation queries the response was YES. [2025-03-09 06:44:22,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 406 events. 142/406 cut-off events. For 151/159 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2131 event pairs, 88 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 884. Up to 275 conditions per place. [2025-03-09 06:44:22,486 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 43 selfloop transitions, 1 changer transitions 1/61 dead transitions. [2025-03-09 06:44:22,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 391 flow [2025-03-09 06:44:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:44:22,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:44:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2025-03-09 06:44:22,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2025-03-09 06:44:22,487 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 309 flow. Second operand 3 states and 82 transitions. [2025-03-09 06:44:22,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 391 flow [2025-03-09 06:44:22,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:44:22,489 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 293 flow [2025-03-09 06:44:22,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2025-03-09 06:44:22,490 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2025-03-09 06:44:22,490 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 293 flow [2025-03-09 06:44:22,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2025-03-09 06:44:22,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:22,490 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-09 06:44:22,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:22,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:22,692 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:22,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:22,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1977768269, now seen corresponding path program 2 times [2025-03-09 06:44:22,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:22,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473094592] [2025-03-09 06:44:22,693 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:22,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:22,700 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:44:22,703 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:44:22,703 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:22,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:44:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473094592] [2025-03-09 06:44:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473094592] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848396345] [2025-03-09 06:44:22,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:22,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:22,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:22,731 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) [2025-03-09 06:44:22,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:44:22,770 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:44:22,778 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:44:22,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:22,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:22,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:44:22,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:44:22,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:44:22,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848396345] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:22,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:22,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-09 06:44:22,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514715672] [2025-03-09 06:44:22,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:22,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:22,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:22,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:22,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-03-09 06:44:22,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 293 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) [2025-03-09 06:44:22,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:22,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-03-09 06:44:22,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:22,900 INFO L124 PetriNetUnfolderBase]: 129/366 cut-off events. [2025-03-09 06:44:22,900 INFO L125 PetriNetUnfolderBase]: For 157/165 co-relation queries the response was YES. [2025-03-09 06:44:22,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 366 events. 129/366 cut-off events. For 157/165 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1822 event pairs, 75 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 796. Up to 234 conditions per place. [2025-03-09 06:44:22,903 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 29 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2025-03-09 06:44:22,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 373 flow [2025-03-09 06:44:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2025-03-09 06:44:22,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43 [2025-03-09 06:44:22,904 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 293 flow. Second operand 4 states and 86 transitions. [2025-03-09 06:44:22,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 373 flow [2025-03-09 06:44:22,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:44:22,906 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 314 flow [2025-03-09 06:44:22,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2025-03-09 06:44:22,907 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2025-03-09 06:44:22,907 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 314 flow [2025-03-09 06:44:22,907 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) [2025-03-09 06:44:22,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:22,907 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:22,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 06:44:23,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:23,111 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:23,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1608409736, now seen corresponding path program 1 times [2025-03-09 06:44:23,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:23,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908298679] [2025-03-09 06:44:23,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:23,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 06:44:23,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:44:23,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:23,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:44:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:23,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908298679] [2025-03-09 06:44:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908298679] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:23,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:23,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:44:23,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393021969] [2025-03-09 06:44:23,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:23,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:44:23,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:23,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:44:23,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:44:23,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2025-03-09 06:44:23,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-09 06:44:23,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:23,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2025-03-09 06:44:23,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:23,208 INFO L124 PetriNetUnfolderBase]: 119/333 cut-off events. [2025-03-09 06:44:23,208 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2025-03-09 06:44:23,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 333 events. 119/333 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1544 event pairs, 40 based on Foata normal form. 6/303 useless extension candidates. Maximal degree in co-relation 761. Up to 124 conditions per place. [2025-03-09 06:44:23,218 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 47 selfloop transitions, 2 changer transitions 1/65 dead transitions. [2025-03-09 06:44:23,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 431 flow [2025-03-09 06:44:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:44:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:44:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2025-03-09 06:44:23,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2025-03-09 06:44:23,219 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 314 flow. Second operand 3 states and 87 transitions. [2025-03-09 06:44:23,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 431 flow [2025-03-09 06:44:23,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:23,221 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 296 flow [2025-03-09 06:44:23,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2025-03-09 06:44:23,221 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2025-03-09 06:44:23,221 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 296 flow [2025-03-09 06:44:23,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2025-03-09 06:44:23,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:23,221 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-09 06:44:23,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:44:23,222 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:23,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash 618386034, now seen corresponding path program 1 times [2025-03-09 06:44:23,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:23,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88437195] [2025-03-09 06:44:23,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:23,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:23,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:44:23,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:44:23,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:23,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:23,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:23,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88437195] [2025-03-09 06:44:23,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88437195] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:23,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238434448] [2025-03-09 06:44:23,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:23,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:23,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:23,352 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) [2025-03-09 06:44:23,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:44:23,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:44:23,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:44:23,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:23,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:23,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 06:44:23,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:23,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:23,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238434448] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:23,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:23,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-09 06:44:23,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357044616] [2025-03-09 06:44:23,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:23,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 06:44:23,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:23,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 06:44:23,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-09 06:44:23,626 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-03-09 06:44:23,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 296 flow. Second operand has 24 states, 24 states have (on average 17.083333333333332) internal successors, (410), 24 states have internal predecessors, (410), 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) [2025-03-09 06:44:23,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:23,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-03-09 06:44:23,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:23,855 INFO L124 PetriNetUnfolderBase]: 137/415 cut-off events. [2025-03-09 06:44:23,856 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2025-03-09 06:44:23,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 415 events. 137/415 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1972 event pairs, 80 based on Foata normal form. 12/373 useless extension candidates. Maximal degree in co-relation 1031. Up to 223 conditions per place. [2025-03-09 06:44:23,858 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 21 selfloop transitions, 61 changer transitions 0/96 dead transitions. [2025-03-09 06:44:23,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 96 transitions, 694 flow [2025-03-09 06:44:23,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-09 06:44:23,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-09 06:44:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 438 transitions. [2025-03-09 06:44:23,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3981818181818182 [2025-03-09 06:44:23,859 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 296 flow. Second operand 22 states and 438 transitions. [2025-03-09 06:44:23,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 96 transitions, 694 flow [2025-03-09 06:44:23,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 688 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-09 06:44:23,862 INFO L231 Difference]: Finished difference. Result has 88 places, 96 transitions, 692 flow [2025-03-09 06:44:23,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=692, PETRI_PLACES=88, PETRI_TRANSITIONS=96} [2025-03-09 06:44:23,863 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 39 predicate places. [2025-03-09 06:44:23,863 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 96 transitions, 692 flow [2025-03-09 06:44:23,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.083333333333332) internal successors, (410), 24 states have internal predecessors, (410), 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) [2025-03-09 06:44:23,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:23,863 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:23,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:24,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:24,064 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:24,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:24,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2095673573, now seen corresponding path program 1 times [2025-03-09 06:44:24,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:24,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866131571] [2025-03-09 06:44:24,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:24,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:24,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:44:24,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:44:24,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:24,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:44:24,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:24,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866131571] [2025-03-09 06:44:24,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866131571] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:24,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:24,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:44:24,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931316407] [2025-03-09 06:44:24,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:24,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:44:24,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:24,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:44:24,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:44:24,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2025-03-09 06:44:24,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 96 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2025-03-09 06:44:24,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:24,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2025-03-09 06:44:24,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:24,171 INFO L124 PetriNetUnfolderBase]: 119/365 cut-off events. [2025-03-09 06:44:24,171 INFO L125 PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES. [2025-03-09 06:44:24,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 365 events. 119/365 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1558 event pairs, 42 based on Foata normal form. 5/342 useless extension candidates. Maximal degree in co-relation 1048. Up to 152 conditions per place. [2025-03-09 06:44:24,173 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 84 selfloop transitions, 2 changer transitions 3/104 dead transitions. [2025-03-09 06:44:24,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 104 transitions, 895 flow [2025-03-09 06:44:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:44:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:44:24,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2025-03-09 06:44:24,174 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2025-03-09 06:44:24,174 INFO L175 Difference]: Start difference. First operand has 88 places, 96 transitions, 692 flow. Second operand 3 states and 89 transitions. [2025-03-09 06:44:24,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 104 transitions, 895 flow [2025-03-09 06:44:24,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 104 transitions, 739 flow, removed 47 selfloop flow, removed 9 redundant places. [2025-03-09 06:44:24,177 INFO L231 Difference]: Finished difference. Result has 82 places, 97 transitions, 550 flow [2025-03-09 06:44:24,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=82, PETRI_TRANSITIONS=97} [2025-03-09 06:44:24,179 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 33 predicate places. [2025-03-09 06:44:24,179 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 97 transitions, 550 flow [2025-03-09 06:44:24,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2025-03-09 06:44:24,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:24,179 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] [2025-03-09 06:44:24,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:44:24,179 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:24,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash -83377064, now seen corresponding path program 1 times [2025-03-09 06:44:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:24,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052711039] [2025-03-09 06:44:24,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:24,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:44:24,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:44:24,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:24,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:24,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:24,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052711039] [2025-03-09 06:44:24,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052711039] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:24,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492507390] [2025-03-09 06:44:24,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:24,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:24,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:24,601 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) [2025-03-09 06:44:24,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:44:24,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:44:24,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:44:24,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:24,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:24,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-09 06:44:24,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:24,732 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 [2025-03-09 06:44:24,889 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 15 treesize of output 7 [2025-03-09 06:44:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:24,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:25,258 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 40 treesize of output 36 [2025-03-09 06:44:25,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:44:25,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 50 treesize of output 46 [2025-03-09 06:44:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492507390] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:25,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:25,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-03-09 06:44:25,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238771512] [2025-03-09 06:44:25,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:25,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-09 06:44:25,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:25,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-09 06:44:25,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2025-03-09 06:44:25,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2025-03-09 06:44:25,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 97 transitions, 550 flow. Second operand has 26 states, 26 states have (on average 13.73076923076923) internal successors, (357), 26 states have internal predecessors, (357), 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) [2025-03-09 06:44:25,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:25,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2025-03-09 06:44:25,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:28,141 INFO L124 PetriNetUnfolderBase]: 1118/2419 cut-off events. [2025-03-09 06:44:28,142 INFO L125 PetriNetUnfolderBase]: For 1166/1166 co-relation queries the response was YES. [2025-03-09 06:44:28,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5586 conditions, 2419 events. 1118/2419 cut-off events. For 1166/1166 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 15452 event pairs, 57 based on Foata normal form. 0/2253 useless extension candidates. Maximal degree in co-relation 5559. Up to 341 conditions per place. [2025-03-09 06:44:28,153 INFO L140 encePairwiseOnDemand]: 34/50 looper letters, 263 selfloop transitions, 217 changer transitions 7/497 dead transitions. [2025-03-09 06:44:28,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 497 transitions, 2737 flow [2025-03-09 06:44:28,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2025-03-09 06:44:28,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2025-03-09 06:44:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 1388 transitions. [2025-03-09 06:44:28,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3605194805194805 [2025-03-09 06:44:28,161 INFO L175 Difference]: Start difference. First operand has 82 places, 97 transitions, 550 flow. Second operand 77 states and 1388 transitions. [2025-03-09 06:44:28,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 497 transitions, 2737 flow [2025-03-09 06:44:28,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 497 transitions, 2606 flow, removed 64 selfloop flow, removed 2 redundant places. [2025-03-09 06:44:28,171 INFO L231 Difference]: Finished difference. Result has 188 places, 267 transitions, 1789 flow [2025-03-09 06:44:28,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=1789, PETRI_PLACES=188, PETRI_TRANSITIONS=267} [2025-03-09 06:44:28,172 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 139 predicate places. [2025-03-09 06:44:28,173 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 267 transitions, 1789 flow [2025-03-09 06:44:28,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.73076923076923) internal successors, (357), 26 states have internal predecessors, (357), 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) [2025-03-09 06:44:28,173 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:28,174 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] [2025-03-09 06:44:28,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-09 06:44:28,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:28,374 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:28,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:28,375 INFO L85 PathProgramCache]: Analyzing trace with hash -83390966, now seen corresponding path program 1 times [2025-03-09 06:44:28,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:28,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454001726] [2025-03-09 06:44:28,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:28,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:28,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:44:28,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:44:28,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:28,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:28,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454001726] [2025-03-09 06:44:28,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454001726] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288429632] [2025-03-09 06:44:28,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:28,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:28,860 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) [2025-03-09 06:44:28,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:44:28,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 06:44:28,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 06:44:28,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:28,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:28,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 06:44:28,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:28,981 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 23 treesize of output 7 [2025-03-09 06:44:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-09 06:44:29,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:44:29,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288429632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:29,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:44:29,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2025-03-09 06:44:29,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327418613] [2025-03-09 06:44:29,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:29,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:44:29,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:29,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:44:29,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2025-03-09 06:44:29,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2025-03-09 06:44:29,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 267 transitions, 1789 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2025-03-09 06:44:29,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:29,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2025-03-09 06:44:29,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:29,507 INFO L124 PetriNetUnfolderBase]: 1944/4074 cut-off events. [2025-03-09 06:44:29,507 INFO L125 PetriNetUnfolderBase]: For 20945/21014 co-relation queries the response was YES. [2025-03-09 06:44:29,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13566 conditions, 4074 events. 1944/4074 cut-off events. For 20945/21014 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 29930 event pairs, 296 based on Foata normal form. 82/4086 useless extension candidates. Maximal degree in co-relation 13507. Up to 1738 conditions per place. [2025-03-09 06:44:29,536 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 321 selfloop transitions, 57 changer transitions 5/429 dead transitions. [2025-03-09 06:44:29,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 429 transitions, 3531 flow [2025-03-09 06:44:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:44:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:44:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2025-03-09 06:44:29,538 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2025-03-09 06:44:29,538 INFO L175 Difference]: Start difference. First operand has 188 places, 267 transitions, 1789 flow. Second operand 7 states and 180 transitions. [2025-03-09 06:44:29,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 429 transitions, 3531 flow [2025-03-09 06:44:29,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 429 transitions, 3153 flow, removed 171 selfloop flow, removed 4 redundant places. [2025-03-09 06:44:29,571 INFO L231 Difference]: Finished difference. Result has 193 places, 310 transitions, 2129 flow [2025-03-09 06:44:29,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2129, PETRI_PLACES=193, PETRI_TRANSITIONS=310} [2025-03-09 06:44:29,571 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 144 predicate places. [2025-03-09 06:44:29,572 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 310 transitions, 2129 flow [2025-03-09 06:44:29,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2025-03-09 06:44:29,572 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:29,572 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] [2025-03-09 06:44:29,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-09 06:44:29,772 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,SelfDestructingSolverStorable12 [2025-03-09 06:44:29,772 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:29,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:29,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2032828746, now seen corresponding path program 1 times [2025-03-09 06:44:29,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:29,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996361170] [2025-03-09 06:44:29,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:29,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:29,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 06:44:29,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 06:44:29,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:29,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996361170] [2025-03-09 06:44:30,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996361170] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899404653] [2025-03-09 06:44:30,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:30,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:30,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:30,093 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) [2025-03-09 06:44:30,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:44:30,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 06:44:30,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 06:44:30,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:30,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:30,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-09 06:44:30,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:30,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-03-09 06:44:30,188 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 [2025-03-09 06:44:30,251 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 06:44:30,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-03-09 06:44:30,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-09 06:44:30,353 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 15 treesize of output 7 [2025-03-09 06:44:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:30,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:30,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:44:30,765 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2025-03-09 06:44:30,772 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:44:30,772 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 62 treesize of output 54 [2025-03-09 06:44:30,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:44:30,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 38 treesize of output 34 [2025-03-09 06:44:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:30,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899404653] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:30,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:30,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2025-03-09 06:44:30,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170988654] [2025-03-09 06:44:30,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:30,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 06:44:30,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:30,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 06:44:30,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=492, Unknown=1, NotChecked=0, Total=600 [2025-03-09 06:44:31,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2025-03-09 06:44:31,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 310 transitions, 2129 flow. Second operand has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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) [2025-03-09 06:44:31,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:31,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2025-03-09 06:44:31,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:33,928 INFO L124 PetriNetUnfolderBase]: 8576/15433 cut-off events. [2025-03-09 06:44:33,928 INFO L125 PetriNetUnfolderBase]: For 87928/88152 co-relation queries the response was YES. [2025-03-09 06:44:33,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53690 conditions, 15433 events. 8576/15433 cut-off events. For 87928/88152 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 119506 event pairs, 1024 based on Foata normal form. 552/14405 useless extension candidates. Maximal degree in co-relation 53628. Up to 5127 conditions per place. [2025-03-09 06:44:34,028 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 951 selfloop transitions, 355 changer transitions 33/1358 dead transitions. [2025-03-09 06:44:34,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 1358 transitions, 10760 flow [2025-03-09 06:44:34,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-09 06:44:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-03-09 06:44:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 675 transitions. [2025-03-09 06:44:34,031 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2025-03-09 06:44:34,031 INFO L175 Difference]: Start difference. First operand has 193 places, 310 transitions, 2129 flow. Second operand 44 states and 675 transitions. [2025-03-09 06:44:34,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 1358 transitions, 10760 flow [2025-03-09 06:44:34,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 1358 transitions, 10736 flow, removed 10 selfloop flow, removed 1 redundant places. [2025-03-09 06:44:34,256 INFO L231 Difference]: Finished difference. Result has 258 places, 630 transitions, 6287 flow [2025-03-09 06:44:34,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2123, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6287, PETRI_PLACES=258, PETRI_TRANSITIONS=630} [2025-03-09 06:44:34,257 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 209 predicate places. [2025-03-09 06:44:34,257 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 630 transitions, 6287 flow [2025-03-09 06:44:34,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 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) [2025-03-09 06:44:34,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:34,257 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] [2025-03-09 06:44:34,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:34,457 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,SelfDestructingSolverStorable13 [2025-03-09 06:44:34,458 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:34,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash 504984199, now seen corresponding path program 2 times [2025-03-09 06:44:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751118397] [2025-03-09 06:44:34,458 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:34,466 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-09 06:44:34,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 15 of 24 statements. [2025-03-09 06:44:34,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:34,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-09 06:44:34,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751118397] [2025-03-09 06:44:34,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751118397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:34,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:34,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:44:34,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718260823] [2025-03-09 06:44:34,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:34,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:44:34,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:34,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:44:34,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:44:34,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2025-03-09 06:44:34,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 630 transitions, 6287 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2025-03-09 06:44:34,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:34,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2025-03-09 06:44:34,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:36,105 INFO L124 PetriNetUnfolderBase]: 5017/10576 cut-off events. [2025-03-09 06:44:36,106 INFO L125 PetriNetUnfolderBase]: For 142703/143207 co-relation queries the response was YES. [2025-03-09 06:44:36,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50289 conditions, 10576 events. 5017/10576 cut-off events. For 142703/143207 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 93741 event pairs, 747 based on Foata normal form. 340/10726 useless extension candidates. Maximal degree in co-relation 50203. Up to 7011 conditions per place. [2025-03-09 06:44:36,338 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 621 selfloop transitions, 67 changer transitions 4/722 dead transitions. [2025-03-09 06:44:36,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 722 transitions, 8896 flow [2025-03-09 06:44:36,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:44:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:44:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2025-03-09 06:44:36,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2025-03-09 06:44:36,340 INFO L175 Difference]: Start difference. First operand has 258 places, 630 transitions, 6287 flow. Second operand 6 states and 158 transitions. [2025-03-09 06:44:36,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 722 transitions, 8896 flow [2025-03-09 06:44:36,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 722 transitions, 8468 flow, removed 208 selfloop flow, removed 6 redundant places. [2025-03-09 06:44:36,653 INFO L231 Difference]: Finished difference. Result has 258 places, 644 transitions, 6349 flow [2025-03-09 06:44:36,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5997, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6349, PETRI_PLACES=258, PETRI_TRANSITIONS=644} [2025-03-09 06:44:36,654 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 209 predicate places. [2025-03-09 06:44:36,654 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 644 transitions, 6349 flow [2025-03-09 06:44:36,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2025-03-09 06:44:36,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:36,654 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:36,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:44:36,654 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:36,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash -566994366, now seen corresponding path program 1 times [2025-03-09 06:44:36,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:36,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425007666] [2025-03-09 06:44:36,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:36,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:36,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-09 06:44:36,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 06:44:36,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:36,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:36,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:36,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425007666] [2025-03-09 06:44:36,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425007666] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:36,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96440956] [2025-03-09 06:44:36,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:36,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:36,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:36,750 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) [2025-03-09 06:44:36,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:44:36,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-09 06:44:36,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 06:44:36,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:36,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:36,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 06:44:36,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:36,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:36,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96440956] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:36,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:36,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-03-09 06:44:36,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662168408] [2025-03-09 06:44:36,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:36,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 06:44:36,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:36,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 06:44:36,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-03-09 06:44:36,974 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-03-09 06:44:36,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 644 transitions, 6349 flow. Second operand has 15 states, 15 states have (on average 18.133333333333333) internal successors, (272), 15 states have internal predecessors, (272), 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) [2025-03-09 06:44:36,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:36,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-03-09 06:44:36,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:37,897 INFO L124 PetriNetUnfolderBase]: 2528/6110 cut-off events. [2025-03-09 06:44:37,897 INFO L125 PetriNetUnfolderBase]: For 77318/77745 co-relation queries the response was YES. [2025-03-09 06:44:37,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30017 conditions, 6110 events. 2528/6110 cut-off events. For 77318/77745 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 53779 event pairs, 944 based on Foata normal form. 369/6363 useless extension candidates. Maximal degree in co-relation 29930. Up to 2440 conditions per place. [2025-03-09 06:44:37,944 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 318 selfloop transitions, 86 changer transitions 3/459 dead transitions. [2025-03-09 06:44:37,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 459 transitions, 5585 flow [2025-03-09 06:44:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:44:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:44:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2025-03-09 06:44:37,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2025-03-09 06:44:37,945 INFO L175 Difference]: Start difference. First operand has 258 places, 644 transitions, 6349 flow. Second operand 8 states and 175 transitions. [2025-03-09 06:44:37,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 459 transitions, 5585 flow [2025-03-09 06:44:38,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 459 transitions, 5425 flow, removed 48 selfloop flow, removed 18 redundant places. [2025-03-09 06:44:38,151 INFO L231 Difference]: Finished difference. Result has 219 places, 416 transitions, 4369 flow [2025-03-09 06:44:38,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4180, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4369, PETRI_PLACES=219, PETRI_TRANSITIONS=416} [2025-03-09 06:44:38,151 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 170 predicate places. [2025-03-09 06:44:38,151 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 416 transitions, 4369 flow [2025-03-09 06:44:38,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.133333333333333) internal successors, (272), 15 states have internal predecessors, (272), 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) [2025-03-09 06:44:38,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:38,152 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] [2025-03-09 06:44:38,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:38,352 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,SelfDestructingSolverStorable15 [2025-03-09 06:44:38,352 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:38,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash -865617188, now seen corresponding path program 2 times [2025-03-09 06:44:38,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:38,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587718584] [2025-03-09 06:44:38,353 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:38,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:38,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-09 06:44:38,371 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 28 statements. [2025-03-09 06:44:38,371 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:38,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-09 06:44:38,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:38,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587718584] [2025-03-09 06:44:38,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587718584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:38,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:38,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:44:38,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844075990] [2025-03-09 06:44:38,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:38,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:44:38,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:38,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:44:38,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:44:38,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2025-03-09 06:44:38,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 416 transitions, 4369 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2025-03-09 06:44:38,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:38,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2025-03-09 06:44:38,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:39,397 INFO L124 PetriNetUnfolderBase]: 2952/6623 cut-off events. [2025-03-09 06:44:39,398 INFO L125 PetriNetUnfolderBase]: For 55944/56248 co-relation queries the response was YES. [2025-03-09 06:44:39,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30189 conditions, 6623 events. 2952/6623 cut-off events. For 55944/56248 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 55744 event pairs, 487 based on Foata normal form. 177/6658 useless extension candidates. Maximal degree in co-relation 30118. Up to 3447 conditions per place. [2025-03-09 06:44:39,454 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 336 selfloop transitions, 90 changer transitions 5/466 dead transitions. [2025-03-09 06:44:39,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 466 transitions, 5703 flow [2025-03-09 06:44:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:44:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:44:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2025-03-09 06:44:39,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51 [2025-03-09 06:44:39,455 INFO L175 Difference]: Start difference. First operand has 219 places, 416 transitions, 4369 flow. Second operand 6 states and 153 transitions. [2025-03-09 06:44:39,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 466 transitions, 5703 flow [2025-03-09 06:44:39,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 466 transitions, 5542 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-09 06:44:39,631 INFO L231 Difference]: Finished difference. Result has 216 places, 415 transitions, 4377 flow [2025-03-09 06:44:39,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4377, PETRI_PLACES=216, PETRI_TRANSITIONS=415} [2025-03-09 06:44:39,631 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 167 predicate places. [2025-03-09 06:44:39,632 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 415 transitions, 4377 flow [2025-03-09 06:44:39,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 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) [2025-03-09 06:44:39,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:39,632 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] [2025-03-09 06:44:39,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-09 06:44:39,632 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:39,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2003030206, now seen corresponding path program 1 times [2025-03-09 06:44:39,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:39,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78669766] [2025-03-09 06:44:39,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:39,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:39,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:44:39,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:44:39,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:39,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:39,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78669766] [2025-03-09 06:44:39,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78669766] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518750633] [2025-03-09 06:44:39,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:39,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:39,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:39,741 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) [2025-03-09 06:44:39,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 06:44:39,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-09 06:44:39,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 06:44:39,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:39,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:39,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-09 06:44:39,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:39,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:39,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518750633] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:39,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:39,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-03-09 06:44:39,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074681899] [2025-03-09 06:44:39,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:39,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 06:44:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:39,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 06:44:39,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-03-09 06:44:40,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-03-09 06:44:40,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 415 transitions, 4377 flow. Second operand has 15 states, 15 states have (on average 18.133333333333333) internal successors, (272), 15 states have internal predecessors, (272), 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) [2025-03-09 06:44:40,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:40,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-03-09 06:44:40,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:40,667 INFO L124 PetriNetUnfolderBase]: 1389/3517 cut-off events. [2025-03-09 06:44:40,667 INFO L125 PetriNetUnfolderBase]: For 35326/35557 co-relation queries the response was YES. [2025-03-09 06:44:40,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15982 conditions, 3517 events. 1389/3517 cut-off events. For 35326/35557 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 27794 event pairs, 618 based on Foata normal form. 173/3602 useless extension candidates. Maximal degree in co-relation 15913. Up to 1553 conditions per place. [2025-03-09 06:44:40,700 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 256 selfloop transitions, 56 changer transitions 23/382 dead transitions. [2025-03-09 06:44:40,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 382 transitions, 4662 flow [2025-03-09 06:44:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:44:40,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:44:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 249 transitions. [2025-03-09 06:44:40,701 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.415 [2025-03-09 06:44:40,701 INFO L175 Difference]: Start difference. First operand has 216 places, 415 transitions, 4377 flow. Second operand 12 states and 249 transitions. [2025-03-09 06:44:40,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 382 transitions, 4662 flow [2025-03-09 06:44:40,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 382 transitions, 4487 flow, removed 34 selfloop flow, removed 7 redundant places. [2025-03-09 06:44:40,783 INFO L231 Difference]: Finished difference. Result has 214 places, 311 transitions, 3241 flow [2025-03-09 06:44:40,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3241, PETRI_PLACES=214, PETRI_TRANSITIONS=311} [2025-03-09 06:44:40,784 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 165 predicate places. [2025-03-09 06:44:40,784 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 311 transitions, 3241 flow [2025-03-09 06:44:40,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.133333333333333) internal successors, (272), 15 states have internal predecessors, (272), 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) [2025-03-09 06:44:40,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:40,785 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:44:40,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 06:44:40,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 06:44:40,985 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:40,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1353874317, now seen corresponding path program 2 times [2025-03-09 06:44:40,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:40,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134781089] [2025-03-09 06:44:40,986 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:40,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:40,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-09 06:44:41,001 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 06:44:41,001 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:44:41,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-09 06:44:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134781089] [2025-03-09 06:44:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134781089] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:41,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:44:41,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985082548] [2025-03-09 06:44:41,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:41,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:44:41,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:41,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:44:41,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:44:41,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2025-03-09 06:44:41,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 311 transitions, 3241 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2025-03-09 06:44:41,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:41,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2025-03-09 06:44:41,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:41,504 INFO L124 PetriNetUnfolderBase]: 1544/3697 cut-off events. [2025-03-09 06:44:41,504 INFO L125 PetriNetUnfolderBase]: For 37041/37448 co-relation queries the response was YES. [2025-03-09 06:44:41,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17184 conditions, 3697 events. 1544/3697 cut-off events. For 37041/37448 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 27602 event pairs, 399 based on Foata normal form. 116/3694 useless extension candidates. Maximal degree in co-relation 17117. Up to 1025 conditions per place. [2025-03-09 06:44:41,530 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 271 selfloop transitions, 25 changer transitions 30/366 dead transitions. [2025-03-09 06:44:41,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 366 transitions, 4545 flow [2025-03-09 06:44:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2025-03-09 06:44:41,531 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-03-09 06:44:41,531 INFO L175 Difference]: Start difference. First operand has 214 places, 311 transitions, 3241 flow. Second operand 4 states and 120 transitions. [2025-03-09 06:44:41,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 366 transitions, 4545 flow [2025-03-09 06:44:41,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 366 transitions, 4408 flow, removed 47 selfloop flow, removed 12 redundant places. [2025-03-09 06:44:41,626 INFO L231 Difference]: Finished difference. Result has 200 places, 263 transitions, 2840 flow [2025-03-09 06:44:41,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2840, PETRI_PLACES=200, PETRI_TRANSITIONS=263} [2025-03-09 06:44:41,627 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 151 predicate places. [2025-03-09 06:44:41,627 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 263 transitions, 2840 flow [2025-03-09 06:44:41,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2025-03-09 06:44:41,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:41,627 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] [2025-03-09 06:44:41,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:44:41,628 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:41,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:41,628 INFO L85 PathProgramCache]: Analyzing trace with hash -153221589, now seen corresponding path program 2 times [2025-03-09 06:44:41,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:41,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643920191] [2025-03-09 06:44:41,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:41,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:41,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-09 06:44:41,645 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-09 06:44:41,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:44:41,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-09 06:44:41,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:41,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643920191] [2025-03-09 06:44:41,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643920191] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:44:41,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:44:41,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:44:41,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326234772] [2025-03-09 06:44:41,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:44:41,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:44:41,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:41,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:44:41,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:44:41,684 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2025-03-09 06:44:41,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 263 transitions, 2840 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2025-03-09 06:44:41,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:41,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2025-03-09 06:44:41,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:41,991 INFO L124 PetriNetUnfolderBase]: 1172/2862 cut-off events. [2025-03-09 06:44:41,991 INFO L125 PetriNetUnfolderBase]: For 31937/32364 co-relation queries the response was YES. [2025-03-09 06:44:42,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13300 conditions, 2862 events. 1172/2862 cut-off events. For 31937/32364 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20270 event pairs, 429 based on Foata normal form. 134/2918 useless extension candidates. Maximal degree in co-relation 13235. Up to 1051 conditions per place. [2025-03-09 06:44:42,009 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 205 selfloop transitions, 19 changer transitions 35/282 dead transitions. [2025-03-09 06:44:42,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 282 transitions, 3707 flow [2025-03-09 06:44:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:44:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:44:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2025-03-09 06:44:42,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.61 [2025-03-09 06:44:42,010 INFO L175 Difference]: Start difference. First operand has 200 places, 263 transitions, 2840 flow. Second operand 4 states and 122 transitions. [2025-03-09 06:44:42,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 282 transitions, 3707 flow [2025-03-09 06:44:42,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 282 transitions, 3394 flow, removed 156 selfloop flow, removed 15 redundant places. [2025-03-09 06:44:42,043 INFO L231 Difference]: Finished difference. Result has 167 places, 195 transitions, 2059 flow [2025-03-09 06:44:42,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2059, PETRI_PLACES=167, PETRI_TRANSITIONS=195} [2025-03-09 06:44:42,044 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 118 predicate places. [2025-03-09 06:44:42,044 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 195 transitions, 2059 flow [2025-03-09 06:44:42,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2025-03-09 06:44:42,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:42,044 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2025-03-09 06:44:42,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:44:42,044 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:42,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:42,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1521361262, now seen corresponding path program 2 times [2025-03-09 06:44:42,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:42,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72483625] [2025-03-09 06:44:42,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:42,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:42,055 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-09 06:44:42,057 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-03-09 06:44:42,057 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:42,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:44:42,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:42,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72483625] [2025-03-09 06:44:42,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72483625] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:42,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558336097] [2025-03-09 06:44:42,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:44:42,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:42,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:42,083 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) [2025-03-09 06:44:42,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 06:44:42,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-09 06:44:42,146 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-03-09 06:44:42,147 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:44:42,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:42,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:44:42,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:44:42,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:44:42,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558336097] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:42,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:42,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-03-09 06:44:42,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776024483] [2025-03-09 06:44:42,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:42,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:44:42,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:42,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:44:42,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:44:42,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2025-03-09 06:44:42,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 195 transitions, 2059 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2025-03-09 06:44:42,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:42,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2025-03-09 06:44:42,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:42,445 INFO L124 PetriNetUnfolderBase]: 973/2431 cut-off events. [2025-03-09 06:44:42,445 INFO L125 PetriNetUnfolderBase]: For 12749/13093 co-relation queries the response was YES. [2025-03-09 06:44:42,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9619 conditions, 2431 events. 973/2431 cut-off events. For 12749/13093 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17232 event pairs, 491 based on Foata normal form. 17/2406 useless extension candidates. Maximal degree in co-relation 9565. Up to 1561 conditions per place. [2025-03-09 06:44:42,459 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 84 selfloop transitions, 60 changer transitions 28/194 dead transitions. [2025-03-09 06:44:42,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 194 transitions, 2381 flow [2025-03-09 06:44:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:44:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:44:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2025-03-09 06:44:42,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.404 [2025-03-09 06:44:42,459 INFO L175 Difference]: Start difference. First operand has 167 places, 195 transitions, 2059 flow. Second operand 5 states and 101 transitions. [2025-03-09 06:44:42,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 194 transitions, 2381 flow [2025-03-09 06:44:42,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 194 transitions, 2257 flow, removed 10 selfloop flow, removed 18 redundant places. [2025-03-09 06:44:42,474 INFO L231 Difference]: Finished difference. Result has 136 places, 166 transitions, 1756 flow [2025-03-09 06:44:42,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1756, PETRI_PLACES=136, PETRI_TRANSITIONS=166} [2025-03-09 06:44:42,474 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 87 predicate places. [2025-03-09 06:44:42,474 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 166 transitions, 1756 flow [2025-03-09 06:44:42,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2025-03-09 06:44:42,475 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:42,475 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2025-03-09 06:44:42,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:42,675 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 [2025-03-09 06:44:42,676 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:42,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:42,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2145080526, now seen corresponding path program 1 times [2025-03-09 06:44:42,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:42,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353894224] [2025-03-09 06:44:42,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:42,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:42,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-09 06:44:42,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-09 06:44:42,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:42,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:43,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:43,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353894224] [2025-03-09 06:44:43,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353894224] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:43,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207495536] [2025-03-09 06:44:43,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:43,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:43,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:43,103 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) [2025-03-09 06:44:43,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 06:44:43,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-09 06:44:43,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-09 06:44:43,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:43,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:43,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-09 06:44:43,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:43,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-03-09 06:44:43,263 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 [2025-03-09 06:44:43,351 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 06:44:43,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-03-09 06:44:43,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2025-03-09 06:44:43,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2025-03-09 06:44:43,683 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-09 06:44:43,683 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 [2025-03-09 06:44:43,686 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:43,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:44,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:44:44,086 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2025-03-09 06:44:44,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:44:44,092 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 49 treesize of output 42 [2025-03-09 06:44:44,095 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 16 treesize of output 9 [2025-03-09 06:44:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:44:44,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207495536] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:44,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:44,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2025-03-09 06:44:44,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994927302] [2025-03-09 06:44:44,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:44,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-09 06:44:44,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:44,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-09 06:44:44,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1107, Unknown=1, NotChecked=0, Total=1260 [2025-03-09 06:44:44,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-03-09 06:44:44,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 166 transitions, 1756 flow. Second operand has 36 states, 36 states have (on average 11.694444444444445) internal successors, (421), 36 states have internal predecessors, (421), 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) [2025-03-09 06:44:44,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:44,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-03-09 06:44:44,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:46,857 INFO L124 PetriNetUnfolderBase]: 3998/8304 cut-off events. [2025-03-09 06:44:46,857 INFO L125 PetriNetUnfolderBase]: For 26379/26953 co-relation queries the response was YES. [2025-03-09 06:44:46,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31038 conditions, 8304 events. 3998/8304 cut-off events. For 26379/26953 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 65175 event pairs, 680 based on Foata normal form. 340/8184 useless extension candidates. Maximal degree in co-relation 30999. Up to 1596 conditions per place. [2025-03-09 06:44:46,906 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 297 selfloop transitions, 229 changer transitions 18/558 dead transitions. [2025-03-09 06:44:46,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 558 transitions, 6256 flow [2025-03-09 06:44:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-09 06:44:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-03-09 06:44:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 569 transitions. [2025-03-09 06:44:46,908 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2917948717948718 [2025-03-09 06:44:46,908 INFO L175 Difference]: Start difference. First operand has 136 places, 166 transitions, 1756 flow. Second operand 39 states and 569 transitions. [2025-03-09 06:44:46,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 558 transitions, 6256 flow [2025-03-09 06:44:46,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 558 transitions, 5605 flow, removed 54 selfloop flow, removed 9 redundant places. [2025-03-09 06:44:46,937 INFO L231 Difference]: Finished difference. Result has 169 places, 316 transitions, 3625 flow [2025-03-09 06:44:46,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3625, PETRI_PLACES=169, PETRI_TRANSITIONS=316} [2025-03-09 06:44:46,938 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 120 predicate places. [2025-03-09 06:44:46,938 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 316 transitions, 3625 flow [2025-03-09 06:44:46,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.694444444444445) internal successors, (421), 36 states have internal predecessors, (421), 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) [2025-03-09 06:44:46,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:46,938 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2025-03-09 06:44:46,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 06:44:47,138 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,SelfDestructingSolverStorable21 [2025-03-09 06:44:47,139 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:47,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:47,139 INFO L85 PathProgramCache]: Analyzing trace with hash -523249462, now seen corresponding path program 1 times [2025-03-09 06:44:47,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:47,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271180748] [2025-03-09 06:44:47,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:47,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:47,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-09 06:44:47,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-09 06:44:47,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:47,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:47,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:47,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271180748] [2025-03-09 06:44:47,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271180748] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:47,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428895831] [2025-03-09 06:44:47,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:47,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:47,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:47,689 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) [2025-03-09 06:44:47,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 06:44:47,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-09 06:44:47,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-09 06:44:47,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:47,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:47,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-09 06:44:47,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:47,857 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 [2025-03-09 06:44:48,207 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-09 06:44:48,207 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 [2025-03-09 06:44:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 06:44:48,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:48,524 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 [2025-03-09 06:44:48,531 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 31 treesize of output 24 [2025-03-09 06:44:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 06:44:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428895831] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:48,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 39 [2025-03-09 06:44:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616673905] [2025-03-09 06:44:48,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:48,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-09 06:44:48,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:48,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-09 06:44:48,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2025-03-09 06:44:48,983 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2025-03-09 06:44:48,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 316 transitions, 3625 flow. Second operand has 40 states, 40 states have (on average 10.025) internal successors, (401), 40 states have internal predecessors, (401), 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) [2025-03-09 06:44:48,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:48,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2025-03-09 06:44:48,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:44:53,013 INFO L124 PetriNetUnfolderBase]: 12947/24165 cut-off events. [2025-03-09 06:44:53,013 INFO L125 PetriNetUnfolderBase]: For 115679/115679 co-relation queries the response was YES. [2025-03-09 06:44:53,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102751 conditions, 24165 events. 12947/24165 cut-off events. For 115679/115679 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 198779 event pairs, 1152 based on Foata normal form. 896/25019 useless extension candidates. Maximal degree in co-relation 102706. Up to 4573 conditions per place. [2025-03-09 06:44:53,179 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 793 selfloop transitions, 316 changer transitions 25/1140 dead transitions. [2025-03-09 06:44:53,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 1140 transitions, 14627 flow [2025-03-09 06:44:53,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-03-09 06:44:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-03-09 06:44:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 670 transitions. [2025-03-09 06:44:53,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3116279069767442 [2025-03-09 06:44:53,182 INFO L175 Difference]: Start difference. First operand has 169 places, 316 transitions, 3625 flow. Second operand 43 states and 670 transitions. [2025-03-09 06:44:53,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 1140 transitions, 14627 flow [2025-03-09 06:44:53,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 1140 transitions, 13811 flow, removed 405 selfloop flow, removed 3 redundant places. [2025-03-09 06:44:53,447 INFO L231 Difference]: Finished difference. Result has 221 places, 501 transitions, 6252 flow [2025-03-09 06:44:53,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3435, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6252, PETRI_PLACES=221, PETRI_TRANSITIONS=501} [2025-03-09 06:44:53,448 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 172 predicate places. [2025-03-09 06:44:53,448 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 501 transitions, 6252 flow [2025-03-09 06:44:53,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.025) internal successors, (401), 40 states have internal predecessors, (401), 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) [2025-03-09 06:44:53,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:44:53,448 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2025-03-09 06:44:53,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 06:44:53,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:53,649 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:44:53,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:44:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash -594274274, now seen corresponding path program 1 times [2025-03-09 06:44:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:44:53,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790900279] [2025-03-09 06:44:53,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:53,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:44:53,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-09 06:44:53,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 06:44:53,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:53,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:44:54,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:44:54,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790900279] [2025-03-09 06:44:54,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790900279] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:44:54,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85596177] [2025-03-09 06:44:54,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:44:54,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:44:54,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:44:54,172 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) [2025-03-09 06:44:54,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 06:44:54,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-09 06:44:54,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-09 06:44:54,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:44:54,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:44:54,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-09 06:44:54,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:44:54,336 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 [2025-03-09 06:44:54,587 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-09 06:44:54,587 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 23 treesize of output 10 [2025-03-09 06:44:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 06:44:54,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:44:55,030 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 40 treesize of output 36 [2025-03-09 06:44:55,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:44:55,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 52 treesize of output 49 [2025-03-09 06:44:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 06:44:55,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85596177] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:44:55,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:44:55,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 38 [2025-03-09 06:44:55,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128091995] [2025-03-09 06:44:55,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:44:55,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-09 06:44:55,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:44:55,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-09 06:44:55,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2025-03-09 06:44:55,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-03-09 06:44:55,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 501 transitions, 6252 flow. Second operand has 40 states, 40 states have (on average 13.05) internal successors, (522), 40 states have internal predecessors, (522), 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) [2025-03-09 06:44:55,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:44:55,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-03-09 06:44:55,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:00,265 INFO L124 PetriNetUnfolderBase]: 12600/25109 cut-off events. [2025-03-09 06:45:00,265 INFO L125 PetriNetUnfolderBase]: For 178622/180228 co-relation queries the response was YES. [2025-03-09 06:45:00,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122706 conditions, 25109 events. 12600/25109 cut-off events. For 178622/180228 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 222082 event pairs, 1114 based on Foata normal form. 1198/23474 useless extension candidates. Maximal degree in co-relation 122647. Up to 5184 conditions per place. [2025-03-09 06:45:00,480 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 558 selfloop transitions, 520 changer transitions 27/1151 dead transitions. [2025-03-09 06:45:00,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 1151 transitions, 15966 flow [2025-03-09 06:45:00,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-03-09 06:45:00,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2025-03-09 06:45:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 840 transitions. [2025-03-09 06:45:00,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.336 [2025-03-09 06:45:00,482 INFO L175 Difference]: Start difference. First operand has 221 places, 501 transitions, 6252 flow. Second operand 50 states and 840 transitions. [2025-03-09 06:45:00,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 1151 transitions, 15966 flow [2025-03-09 06:45:01,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1151 transitions, 15507 flow, removed 127 selfloop flow, removed 15 redundant places. [2025-03-09 06:45:01,256 INFO L231 Difference]: Finished difference. Result has 274 places, 797 transitions, 11230 flow [2025-03-09 06:45:01,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=5855, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=11230, PETRI_PLACES=274, PETRI_TRANSITIONS=797} [2025-03-09 06:45:01,256 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 225 predicate places. [2025-03-09 06:45:01,256 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 797 transitions, 11230 flow [2025-03-09 06:45:01,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 13.05) internal successors, (522), 40 states have internal predecessors, (522), 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) [2025-03-09 06:45:01,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:01,257 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:01,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-09 06:45:01,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:01,457 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2025-03-09 06:45:01,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash -137625347, now seen corresponding path program 1 times [2025-03-09 06:45:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151481528] [2025-03-09 06:45:01,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:01,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-09 06:45:01,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-09 06:45:01,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:01,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:01,877 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-09 06:45:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:01,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151481528] [2025-03-09 06:45:01,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151481528] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:01,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42897123] [2025-03-09 06:45:01,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:01,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:01,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:01,879 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) [2025-03-09 06:45:01,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 06:45:01,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-09 06:45:01,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-09 06:45:01,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:01,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:01,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-09 06:45:01,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:01,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-03-09 06:45:02,066 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 [2025-03-09 06:45:02,228 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-09 06:45:02,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-03-09 06:45:02,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-09 06:45:02,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-09 06:45:02,745 INFO L349 Elim1Store]: treesize reduction 26, result has 49.0 percent of original size [2025-03-09 06:45:02,745 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 46 treesize of output 36 [2025-03-09 06:45:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:02,794 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:45:03,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:45:03,709 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 70 [2025-03-09 06:45:03,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:45:03,740 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 169 treesize of output 216 [2025-03-09 06:45:03,777 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-09 06:45:03,777 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 112 treesize of output 159 [2025-03-09 06:45:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:45:05,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42897123] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:45:05,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:45:05,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 16] total 44 [2025-03-09 06:45:05,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434616884] [2025-03-09 06:45:05,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:45:05,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-09 06:45:05,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:05,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-09 06:45:05,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1842, Unknown=1, NotChecked=0, Total=2070 [2025-03-09 06:45:06,440 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 50 [2025-03-09 06:45:06,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 797 transitions, 11230 flow. Second operand has 46 states, 46 states have (on average 6.391304347826087) internal successors, (294), 46 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) [2025-03-09 06:45:06,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:06,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 50 [2025-03-09 06:45:06,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:15,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-09 06:45:42,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]