./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-word-trans.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/chl-word-trans.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 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:39:31,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:39:31,717 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:39:31,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:39:31,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:39:31,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:39:31,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:39:31,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:39:31,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:39:31,748 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:39:31,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:39:31,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:39:31,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:39:31,748 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:39:31,749 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:39:31,749 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:39:31,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:39:31,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:39:31,750 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:39:31,750 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 -> 9cb2b0cbecf02e8cce2fd890595fb88c3204482a27ce7ac6f4ef6fb92949d747 [2025-03-09 06:39:31,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:39:31,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:39:31,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:39:31,971 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:39:31,972 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:39:31,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2025-03-09 06:39:33,144 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8a921276/e01fbb9d6eca460cbb31c07e3779cb69/FLAG07d995f98 [2025-03-09 06:39:33,365 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:39:33,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2025-03-09 06:39:33,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8a921276/e01fbb9d6eca460cbb31c07e3779cb69/FLAG07d995f98 [2025-03-09 06:39:33,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8a921276/e01fbb9d6eca460cbb31c07e3779cb69 [2025-03-09 06:39:33,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:39:33,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:39:33,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:39:33,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:39:33,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:39:33,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:33,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@670f7015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33, skipping insertion in model container [2025-03-09 06:39:33,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:33,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:39:33,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:39:33,908 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:39:33,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:39:33,947 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:39:33,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33 WrapperNode [2025-03-09 06:39:33,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:39:33,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:39:33,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:39:33,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:39:33,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:33,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:33,979 INFO L138 Inliner]: procedures = 24, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 164 [2025-03-09 06:39:33,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:39:33,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:39:33,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:39:33,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:39:33,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:33,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:33,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:34,013 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-03-09 06:39:34,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:34,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:34,026 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:34,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:34,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:34,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:34,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:39:34,038 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:39:34,038 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:39:34,038 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:39:34,039 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (1/1) ... [2025-03-09 06:39:34,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:39:34,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:39:34,066 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 06:39:34,068 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 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:39:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:39:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:39:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:39:34,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:39:34,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:39:34,086 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 06:39:34,166 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:39:34,167 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:39:34,487 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:39:34,488 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:39:34,682 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:39:34,682 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:39:34,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:39:34 BoogieIcfgContainer [2025-03-09 06:39:34,683 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:39:34,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:39:34,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:39:34,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:39:34,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:39:33" (1/3) ... [2025-03-09 06:39:34,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b09f9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:39:34, skipping insertion in model container [2025-03-09 06:39:34,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:39:33" (2/3) ... [2025-03-09 06:39:34,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b09f9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:39:34, skipping insertion in model container [2025-03-09 06:39:34,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:39:34" (3/3) ... [2025-03-09 06:39:34,690 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2025-03-09 06:39:34,703 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:39:34,704 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-word-trans.wvr.c that has 4 procedures, 75 locations, 1 initial locations, 6 loop locations, and 18 error locations. [2025-03-09 06:39:34,704 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:39:34,757 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 06:39:34,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 199 flow [2025-03-09 06:39:34,820 INFO L124 PetriNetUnfolderBase]: 15/86 cut-off events. [2025-03-09 06:39:34,822 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 06:39:34,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 15/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 277 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 66. Up to 3 conditions per place. [2025-03-09 06:39:34,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 89 transitions, 199 flow [2025-03-09 06:39:34,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 84 transitions, 183 flow [2025-03-09 06:39:34,834 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:39:34,841 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;@dd79a65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:39:34,841 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-03-09 06:39:34,844 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:39:34,844 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:39:34,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:39:34,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:34,845 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:39:34,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:39:34,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash 675301, now seen corresponding path program 1 times [2025-03-09 06:39:34,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:34,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634481546] [2025-03-09 06:39:34,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:34,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:39:34,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:39:34,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:34,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:35,055 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 06:39:35,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:35,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634481546] [2025-03-09 06:39:35,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634481546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:39:35,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:39:35,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:39:35,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628626591] [2025-03-09 06:39:35,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:39:35,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:39:35,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:35,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:39:35,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:39:35,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2025-03-09 06:39:35,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 06:39:35,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:35,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2025-03-09 06:39:35,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:39:35,786 INFO L124 PetriNetUnfolderBase]: 3619/6444 cut-off events. [2025-03-09 06:39:35,786 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2025-03-09 06:39:35,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11182 conditions, 6444 events. 3619/6444 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 44950 event pairs, 2208 based on Foata normal form. 3/4781 useless extension candidates. Maximal degree in co-relation 10537. Up to 4530 conditions per place. [2025-03-09 06:39:35,841 INFO L140 encePairwiseOnDemand]: 73/89 looper letters, 50 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2025-03-09 06:39:35,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 321 flow [2025-03-09 06:39:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:39:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:39:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2025-03-09 06:39:35,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5898876404494382 [2025-03-09 06:39:35,858 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 183 flow. Second operand 4 states and 210 transitions. [2025-03-09 06:39:35,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 321 flow [2025-03-09 06:39:35,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 93 transitions, 312 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:39:35,869 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 262 flow [2025-03-09 06:39:35,871 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2025-03-09 06:39:35,874 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2025-03-09 06:39:35,874 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 262 flow [2025-03-09 06:39:35,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 06:39:35,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:35,875 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:39:35,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:39:35,875 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:39:35,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1356335397, now seen corresponding path program 1 times [2025-03-09 06:39:35,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:35,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879760385] [2025-03-09 06:39:35,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:35,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:35,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:39:35,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:39:35,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:35,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:35,990 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 06:39:35,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879760385] [2025-03-09 06:39:35,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879760385] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:39:35,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061828925] [2025-03-09 06:39:35,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:35,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:39:35,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:39:35,993 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 06:39:35,995 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 06:39:36,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:39:36,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:39:36,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:36,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:36,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:39:36,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:39:36,089 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 06:39:36,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:39:36,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061828925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:39:36,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:39:36,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:39:36,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204029783] [2025-03-09 06:39:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:39:36,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:39:36,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:36,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:39:36,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:39:36,110 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2025-03-09 06:39:36,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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 06:39:36,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:36,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2025-03-09 06:39:36,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:39:36,693 INFO L124 PetriNetUnfolderBase]: 3619/6441 cut-off events. [2025-03-09 06:39:36,693 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2025-03-09 06:39:36,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11136 conditions, 6441 events. 3619/6441 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 44924 event pairs, 2208 based on Foata normal form. 3/4783 useless extension candidates. Maximal degree in co-relation 11063. Up to 4515 conditions per place. [2025-03-09 06:39:36,744 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 40 selfloop transitions, 17 changer transitions 0/90 dead transitions. [2025-03-09 06:39:36,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 364 flow [2025-03-09 06:39:36,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:39:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:39:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 276 transitions. [2025-03-09 06:39:36,746 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5168539325842697 [2025-03-09 06:39:36,746 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 262 flow. Second operand 6 states and 276 transitions. [2025-03-09 06:39:36,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 364 flow [2025-03-09 06:39:36,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 364 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:39:36,748 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 284 flow [2025-03-09 06:39:36,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2025-03-09 06:39:36,748 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2025-03-09 06:39:36,750 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 284 flow [2025-03-09 06:39:36,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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 06:39:36,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:36,751 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:39:36,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 06:39:36,955 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 06:39:36,955 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:39:36,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:36,956 INFO L85 PathProgramCache]: Analyzing trace with hash 903276265, now seen corresponding path program 1 times [2025-03-09 06:39:36,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:36,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439429023] [2025-03-09 06:39:36,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:36,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:36,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:39:36,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:39:36,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:36,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:39:37,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:37,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439429023] [2025-03-09 06:39:37,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439429023] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:39:37,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949877304] [2025-03-09 06:39:37,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:37,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:39:37,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:39:37,061 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 06:39:37,062 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 06:39:37,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:39:37,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:39:37,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:37,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:37,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:39:37,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:39:37,142 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 06:39:37,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:39:37,176 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 06:39:37,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949877304] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:39:37,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:39:37,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:39:37,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428007258] [2025-03-09 06:39:37,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:39:37,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:39:37,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:37,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:39:37,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:39:37,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 89 [2025-03-09 06:39:37,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 284 flow. Second operand has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 06:39:37,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:37,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 89 [2025-03-09 06:39:37,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:39:37,774 INFO L124 PetriNetUnfolderBase]: 3628/6477 cut-off events. [2025-03-09 06:39:37,775 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2025-03-09 06:39:37,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11277 conditions, 6477 events. 3628/6477 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 45307 event pairs, 2208 based on Foata normal form. 9/4825 useless extension candidates. Maximal degree in co-relation 11065. Up to 4530 conditions per place. [2025-03-09 06:39:37,804 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 47 selfloop transitions, 37 changer transitions 0/117 dead transitions. [2025-03-09 06:39:37,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 117 transitions, 626 flow [2025-03-09 06:39:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:39:37,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:39:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 453 transitions. [2025-03-09 06:39:37,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5089887640449439 [2025-03-09 06:39:37,806 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 284 flow. Second operand 10 states and 453 transitions. [2025-03-09 06:39:37,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 117 transitions, 626 flow [2025-03-09 06:39:37,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 117 transitions, 543 flow, removed 16 selfloop flow, removed 5 redundant places. [2025-03-09 06:39:37,813 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 499 flow [2025-03-09 06:39:37,813 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=499, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2025-03-09 06:39:37,814 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2025-03-09 06:39:37,814 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 499 flow [2025-03-09 06:39:37,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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 06:39:37,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:37,814 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:39:37,821 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 06:39:38,019 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 06:39:38,019 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:39:38,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash -2115868396, now seen corresponding path program 1 times [2025-03-09 06:39:38,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:38,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709614460] [2025-03-09 06:39:38,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:38,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:38,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:39:38,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:39:38,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:38,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:38,100 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 06:39:38,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:38,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709614460] [2025-03-09 06:39:38,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709614460] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:39:38,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:39:38,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:39:38,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296277381] [2025-03-09 06:39:38,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:39:38,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:39:38,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:38,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:39:38,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:39:38,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 89 [2025-03-09 06:39:38,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 06:39:38,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:38,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 89 [2025-03-09 06:39:38,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:39:38,689 INFO L124 PetriNetUnfolderBase]: 6605/10634 cut-off events. [2025-03-09 06:39:38,689 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2025-03-09 06:39:38,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19461 conditions, 10634 events. 6605/10634 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 68519 event pairs, 3248 based on Foata normal form. 146/8256 useless extension candidates. Maximal degree in co-relation 19363. Up to 6583 conditions per place. [2025-03-09 06:39:38,753 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 131 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2025-03-09 06:39:38,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 168 transitions, 877 flow [2025-03-09 06:39:38,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:39:38,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:39:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2025-03-09 06:39:38,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7219101123595506 [2025-03-09 06:39:38,756 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 499 flow. Second operand 4 states and 257 transitions. [2025-03-09 06:39:38,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 168 transitions, 877 flow [2025-03-09 06:39:38,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 168 transitions, 840 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-09 06:39:38,759 INFO L231 Difference]: Finished difference. Result has 92 places, 120 transitions, 491 flow [2025-03-09 06:39:38,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=92, PETRI_TRANSITIONS=120} [2025-03-09 06:39:38,760 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 13 predicate places. [2025-03-09 06:39:38,760 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 120 transitions, 491 flow [2025-03-09 06:39:38,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 06:39:38,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:38,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:39:38,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:39:38,761 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:39:38,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1167441958, now seen corresponding path program 1 times [2025-03-09 06:39:38,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:38,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666956609] [2025-03-09 06:39:38,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:38,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:38,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:39:38,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:39:38,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:38,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:38,919 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 06:39:38,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:38,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666956609] [2025-03-09 06:39:38,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666956609] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:39:38,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:39:38,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:39:38,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637325960] [2025-03-09 06:39:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:39:38,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:39:38,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:38,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:39:38,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:39:38,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 89 [2025-03-09 06:39:38,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 120 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 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 06:39:38,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:38,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 89 [2025-03-09 06:39:38,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:39:40,111 INFO L124 PetriNetUnfolderBase]: 12414/21860 cut-off events. [2025-03-09 06:39:40,111 INFO L125 PetriNetUnfolderBase]: For 2476/2492 co-relation queries the response was YES. [2025-03-09 06:39:40,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40170 conditions, 21860 events. 12414/21860 cut-off events. For 2476/2492 co-relation queries the response was YES. Maximal size of possible extension queue 1047. Compared 179123 event pairs, 7206 based on Foata normal form. 304/17174 useless extension candidates. Maximal degree in co-relation 40046. Up to 7814 conditions per place. [2025-03-09 06:39:40,263 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 127 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2025-03-09 06:39:40,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 956 flow [2025-03-09 06:39:40,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:39:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:39:40,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 333 transitions. [2025-03-09 06:39:40,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6235955056179775 [2025-03-09 06:39:40,266 INFO L175 Difference]: Start difference. First operand has 92 places, 120 transitions, 491 flow. Second operand 6 states and 333 transitions. [2025-03-09 06:39:40,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 956 flow [2025-03-09 06:39:40,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 173 transitions, 951 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:39:40,272 INFO L231 Difference]: Finished difference. Result has 99 places, 123 transitions, 541 flow [2025-03-09 06:39:40,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=541, PETRI_PLACES=99, PETRI_TRANSITIONS=123} [2025-03-09 06:39:40,273 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2025-03-09 06:39:40,273 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 123 transitions, 541 flow [2025-03-09 06:39:40,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 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 06:39:40,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:40,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:39:40,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:39:40,274 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:39:40,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:40,274 INFO L85 PathProgramCache]: Analyzing trace with hash -38697291, now seen corresponding path program 1 times [2025-03-09 06:39:40,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:40,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944157170] [2025-03-09 06:39:40,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:40,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:40,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:39:40,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:39:40,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:40,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:40,337 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 06:39:40,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:40,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944157170] [2025-03-09 06:39:40,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944157170] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:39:40,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:39:40,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:39:40,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430292491] [2025-03-09 06:39:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:39:40,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:39:40,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:40,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:39:40,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:39:40,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 89 [2025-03-09 06:39:40,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 123 transitions, 541 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 06:39:40,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:40,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 89 [2025-03-09 06:39:40,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:39:41,861 INFO L124 PetriNetUnfolderBase]: 19844/31572 cut-off events. [2025-03-09 06:39:41,861 INFO L125 PetriNetUnfolderBase]: For 3705/4117 co-relation queries the response was YES. [2025-03-09 06:39:41,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61328 conditions, 31572 events. 19844/31572 cut-off events. For 3705/4117 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 230915 event pairs, 9872 based on Foata normal form. 448/26531 useless extension candidates. Maximal degree in co-relation 61201. Up to 19570 conditions per place. [2025-03-09 06:39:42,034 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 137 selfloop transitions, 4 changer transitions 0/176 dead transitions. [2025-03-09 06:39:42,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 176 transitions, 959 flow [2025-03-09 06:39:42,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:39:42,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:39:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2025-03-09 06:39:42,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7162921348314607 [2025-03-09 06:39:42,036 INFO L175 Difference]: Start difference. First operand has 99 places, 123 transitions, 541 flow. Second operand 4 states and 255 transitions. [2025-03-09 06:39:42,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 176 transitions, 959 flow [2025-03-09 06:39:42,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 176 transitions, 951 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-09 06:39:42,045 INFO L231 Difference]: Finished difference. Result has 103 places, 126 transitions, 562 flow [2025-03-09 06:39:42,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=562, PETRI_PLACES=103, PETRI_TRANSITIONS=126} [2025-03-09 06:39:42,046 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 24 predicate places. [2025-03-09 06:39:42,046 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 126 transitions, 562 flow [2025-03-09 06:39:42,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 06:39:42,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:42,047 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:39:42,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:39:42,047 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:39:42,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1830961674, now seen corresponding path program 1 times [2025-03-09 06:39:42,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:42,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311765804] [2025-03-09 06:39:42,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:42,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:39:42,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:39:42,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:42,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:42,160 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 06:39:42,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:42,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311765804] [2025-03-09 06:39:42,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311765804] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:39:42,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:39:42,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:39:42,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780260253] [2025-03-09 06:39:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:39:42,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:39:42,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:42,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:39:42,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:39:42,184 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 89 [2025-03-09 06:39:42,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 562 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 06:39:42,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:42,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 89 [2025-03-09 06:39:42,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:39:45,465 INFO L124 PetriNetUnfolderBase]: 35308/63632 cut-off events. [2025-03-09 06:39:45,465 INFO L125 PetriNetUnfolderBase]: For 18461/18639 co-relation queries the response was YES. [2025-03-09 06:39:45,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125921 conditions, 63632 events. 35308/63632 cut-off events. For 18461/18639 co-relation queries the response was YES. Maximal size of possible extension queue 2501. Compared 609688 event pairs, 20812 based on Foata normal form. 856/55092 useless extension candidates. Maximal degree in co-relation 125706. Up to 21617 conditions per place. [2025-03-09 06:39:46,049 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 158 selfloop transitions, 4 changer transitions 0/198 dead transitions. [2025-03-09 06:39:46,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 198 transitions, 1217 flow [2025-03-09 06:39:46,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:39:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:39:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2025-03-09 06:39:46,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7106741573033708 [2025-03-09 06:39:46,050 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 562 flow. Second operand 4 states and 253 transitions. [2025-03-09 06:39:46,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 198 transitions, 1217 flow [2025-03-09 06:39:46,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 198 transitions, 1212 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:39:46,085 INFO L231 Difference]: Finished difference. Result has 107 places, 127 transitions, 582 flow [2025-03-09 06:39:46,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=582, PETRI_PLACES=107, PETRI_TRANSITIONS=127} [2025-03-09 06:39:46,086 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 28 predicate places. [2025-03-09 06:39:46,086 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 127 transitions, 582 flow [2025-03-09 06:39:46,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 06:39:46,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:46,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:39:46,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:39:46,086 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:39:46,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:46,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1199647124, now seen corresponding path program 1 times [2025-03-09 06:39:46,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:46,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528543898] [2025-03-09 06:39:46,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:46,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:46,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 06:39:46,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 06:39:46,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:46,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:46,174 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 06:39:46,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:46,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528543898] [2025-03-09 06:39:46,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528543898] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:39:46,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:39:46,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:39:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144026953] [2025-03-09 06:39:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:39:46,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:39:46,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:46,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:39:46,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:39:46,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 89 [2025-03-09 06:39:46,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 127 transitions, 582 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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 06:39:46,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:46,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 89 [2025-03-09 06:39:46,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:39:53,100 INFO L124 PetriNetUnfolderBase]: 74500/131096 cut-off events. [2025-03-09 06:39:53,100 INFO L125 PetriNetUnfolderBase]: For 23354/23714 co-relation queries the response was YES. [2025-03-09 06:39:53,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253279 conditions, 131096 events. 74500/131096 cut-off events. For 23354/23714 co-relation queries the response was YES. Maximal size of possible extension queue 5019. Compared 1335620 event pairs, 43464 based on Foata normal form. 1584/110065 useless extension candidates. Maximal degree in co-relation 253063. Up to 46472 conditions per place. [2025-03-09 06:39:54,144 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 114 selfloop transitions, 15 changer transitions 0/167 dead transitions. [2025-03-09 06:39:54,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 167 transitions, 950 flow [2025-03-09 06:39:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:39:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:39:54,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 287 transitions. [2025-03-09 06:39:54,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6449438202247191 [2025-03-09 06:39:54,284 INFO L175 Difference]: Start difference. First operand has 107 places, 127 transitions, 582 flow. Second operand 5 states and 287 transitions. [2025-03-09 06:39:54,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 167 transitions, 950 flow [2025-03-09 06:39:54,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 167 transitions, 948 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-09 06:39:54,376 INFO L231 Difference]: Finished difference. Result has 113 places, 128 transitions, 632 flow [2025-03-09 06:39:54,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=632, PETRI_PLACES=113, PETRI_TRANSITIONS=128} [2025-03-09 06:39:54,377 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2025-03-09 06:39:54,377 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 128 transitions, 632 flow [2025-03-09 06:39:54,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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 06:39:54,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:39:54,377 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:39:54,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:39:54,377 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:39:54,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:39:54,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2088074571, now seen corresponding path program 1 times [2025-03-09 06:39:54,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:39:54,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280441534] [2025-03-09 06:39:54,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:54,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:39:54,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:39:54,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:39:54,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:54,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:54,500 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 06:39:54,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:39:54,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280441534] [2025-03-09 06:39:54,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280441534] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:39:54,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442135927] [2025-03-09 06:39:54,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:39:54,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:39:54,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:39:54,503 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 06:39:54,505 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 06:39:54,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:39:54,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:39:54,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:39:54,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:39:54,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:39:54,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:39:54,617 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 06:39:54,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:39:54,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442135927] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:39:54,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:39:54,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2025-03-09 06:39:54,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955444069] [2025-03-09 06:39:54,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:39:54,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:39:54,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:39:54,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:39:54,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:39:54,631 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2025-03-09 06:39:54,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 128 transitions, 632 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 06:39:54,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:39:54,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2025-03-09 06:39:54,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:40:01,246 INFO L124 PetriNetUnfolderBase]: 65028/118644 cut-off events. [2025-03-09 06:40:01,246 INFO L125 PetriNetUnfolderBase]: For 32675/32835 co-relation queries the response was YES. [2025-03-09 06:40:01,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229894 conditions, 118644 events. 65028/118644 cut-off events. For 32675/32835 co-relation queries the response was YES. Maximal size of possible extension queue 4334. Compared 1235091 event pairs, 39960 based on Foata normal form. 1960/103408 useless extension candidates. Maximal degree in co-relation 229670. Up to 79658 conditions per place. [2025-03-09 06:40:02,387 INFO L140 encePairwiseOnDemand]: 87/89 looper letters, 86 selfloop transitions, 1 changer transitions 0/126 dead transitions. [2025-03-09 06:40:02,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 126 transitions, 792 flow [2025-03-09 06:40:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:40:02,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:40:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2025-03-09 06:40:02,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6329588014981273 [2025-03-09 06:40:02,388 INFO L175 Difference]: Start difference. First operand has 113 places, 128 transitions, 632 flow. Second operand 3 states and 169 transitions. [2025-03-09 06:40:02,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 126 transitions, 792 flow [2025-03-09 06:40:02,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 126 transitions, 765 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:40:02,480 INFO L231 Difference]: Finished difference. Result has 109 places, 126 transitions, 593 flow [2025-03-09 06:40:02,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=109, PETRI_TRANSITIONS=126} [2025-03-09 06:40:02,481 INFO L279 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2025-03-09 06:40:02,481 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 126 transitions, 593 flow [2025-03-09 06:40:02,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 06:40:02,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:40:02,481 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:40:02,487 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 06:40:02,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:40:02,681 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2025-03-09 06:40:02,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:40:02,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1465645495, now seen corresponding path program 1 times [2025-03-09 06:40:02,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:40:02,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142553604] [2025-03-09 06:40:02,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:40:02,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:40:02,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:40:02,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:40:02,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:40:02,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:40:02,832 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 06:40:02,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:40:02,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142553604] [2025-03-09 06:40:02,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142553604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:40:02,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:40:02,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:40:02,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183419] [2025-03-09 06:40:02,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:40:02,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:40:02,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:40:02,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:40:02,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:40:02,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 89 [2025-03-09 06:40:02,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 126 transitions, 593 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 06:40:02,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:40:02,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 89 [2025-03-09 06:40:02,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand