./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:43:04,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:43:04,634 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:43:04,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:43:04,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:43:04,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:43:04,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:43:04,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:43:04,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:43:04,657 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:43:04,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:43:04,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:43:04,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:43:04,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:43:04,658 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:43:04,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:43:04,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:43:04,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:43:04,659 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:43:04,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:43:04,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:43:04,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:43:04,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:43:04,659 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:43:04,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:43:04,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:43:04,659 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 -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2025-03-09 06:43:04,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:43:04,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:43:04,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:43:04,907 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:43:04,908 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:43:04,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2025-03-09 06:43:06,119 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79f275804/d1690cfed342423392d7198b21dd6898/FLAGff1d2622b [2025-03-09 06:43:06,340 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:43:06,341 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2025-03-09 06:43:06,350 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79f275804/d1690cfed342423392d7198b21dd6898/FLAGff1d2622b [2025-03-09 06:43:06,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79f275804/d1690cfed342423392d7198b21dd6898 [2025-03-09 06:43:06,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:43:06,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:43:06,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:43:06,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:43:06,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:43:06,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b59287a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06, skipping insertion in model container [2025-03-09 06:43:06,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,710 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:43:06,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:43:06,832 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:43:06,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:43:06,858 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:43:06,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06 WrapperNode [2025-03-09 06:43:06,859 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:43:06,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:43:06,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:43:06,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:43:06,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,882 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 180 [2025-03-09 06:43:06,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:43:06,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:43:06,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:43:06,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:43:06,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,903 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-09 06:43:06,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,908 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:43:06,912 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:43:06,913 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:43:06,913 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:43:06,914 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (1/1) ... [2025-03-09 06:43:06,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:43:06,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:06,938 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 06:43:06,940 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 06:43:06,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:43:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:43:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:43:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:43:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:43:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:43:06,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:43:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:43:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:43:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:43:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:43:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:43:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:43:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:43:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:43:06,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:43:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:43:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:43:06,960 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 06:43:07,037 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:43:07,038 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:43:07,317 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:43:07,318 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:43:07,523 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:43:07,524 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:43:07,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:07 BoogieIcfgContainer [2025-03-09 06:43:07,524 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:43:07,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:43:07,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:43:07,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:43:07,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:43:06" (1/3) ... [2025-03-09 06:43:07,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e4219f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:43:07, skipping insertion in model container [2025-03-09 06:43:07,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:06" (2/3) ... [2025-03-09 06:43:07,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e4219f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:43:07, skipping insertion in model container [2025-03-09 06:43:07,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:07" (3/3) ... [2025-03-09 06:43:07,533 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2025-03-09 06:43:07,544 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:43:07,546 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-multiply-verify.wvr.c that has 4 procedures, 47 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-03-09 06:43:07,546 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:43:07,621 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 06:43:07,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 119 flow [2025-03-09 06:43:07,686 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2025-03-09 06:43:07,688 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 06:43:07,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 3/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 112 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2025-03-09 06:43:07,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 119 flow [2025-03-09 06:43:07,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 44 transitions, 103 flow [2025-03-09 06:43:07,706 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:43:07,718 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;@6fc7dbba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:43:07,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-09 06:43:07,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:43:07,721 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:43:07,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:43:07,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:07,722 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:43:07,722 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:07,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash 482401, now seen corresponding path program 1 times [2025-03-09 06:43:07,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770803817] [2025-03-09 06:43:07,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:07,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:07,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:43:07,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:43:07,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:07,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:07,920 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 06:43:07,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:07,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770803817] [2025-03-09 06:43:07,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770803817] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:07,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:07,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:07,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856550772] [2025-03-09 06:43:07,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:07,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:07,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:07,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:07,960 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-09 06:43:07,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 06:43:07,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:07,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-09 06:43:07,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:08,331 INFO L124 PetriNetUnfolderBase]: 1667/2524 cut-off events. [2025-03-09 06:43:08,332 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2025-03-09 06:43:08,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5113 conditions, 2524 events. 1667/2524 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14105 event pairs, 1461 based on Foata normal form. 1/1915 useless extension candidates. Maximal degree in co-relation 4776. Up to 2421 conditions per place. [2025-03-09 06:43:08,351 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 32 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2025-03-09 06:43:08,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 175 flow [2025-03-09 06:43:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-03-09 06:43:08,362 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4336734693877551 [2025-03-09 06:43:08,363 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 103 flow. Second operand 4 states and 85 transitions. [2025-03-09 06:43:08,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 175 flow [2025-03-09 06:43:08,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 166 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:43:08,373 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 117 flow [2025-03-09 06:43:08,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2025-03-09 06:43:08,379 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2025-03-09 06:43:08,379 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 117 flow [2025-03-09 06:43:08,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 06:43:08,380 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:08,380 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:43:08,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:43:08,381 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:08,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1486749303, now seen corresponding path program 1 times [2025-03-09 06:43:08,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355844167] [2025-03-09 06:43:08,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:08,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:08,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:43:08,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:43:08,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:08,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:08,498 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 06:43:08,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355844167] [2025-03-09 06:43:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355844167] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605065016] [2025-03-09 06:43:08,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:08,501 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 06:43:08,502 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 06:43:08,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:43:08,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:43:08,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:08,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:08,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:43:08,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:08,596 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 06:43:08,596 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:43:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605065016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:08,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:43:08,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:43:08,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435935880] [2025-03-09 06:43:08,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:08,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:43:08,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:08,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:43:08,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:43:08,603 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-09 06:43:08,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:08,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:08,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-09 06:43:08,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:08,852 INFO L124 PetriNetUnfolderBase]: 1667/2523 cut-off events. [2025-03-09 06:43:08,852 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-09 06:43:08,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5066 conditions, 2523 events. 1667/2523 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14124 event pairs, 1461 based on Foata normal form. 1/1915 useless extension candidates. Maximal degree in co-relation 5039. Up to 2416 conditions per place. [2025-03-09 06:43:08,862 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 28 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2025-03-09 06:43:08,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 183 flow [2025-03-09 06:43:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:43:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:43:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2025-03-09 06:43:08,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3469387755102041 [2025-03-09 06:43:08,863 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 117 flow. Second operand 6 states and 102 transitions. [2025-03-09 06:43:08,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 183 flow [2025-03-09 06:43:08,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:08,868 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 124 flow [2025-03-09 06:43:08,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2025-03-09 06:43:08,868 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2025-03-09 06:43:08,868 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 124 flow [2025-03-09 06:43:08,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:08,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:08,868 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 06:43:08,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:43:09,069 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 06:43:09,069 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:09,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:09,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1488870366, now seen corresponding path program 1 times [2025-03-09 06:43:09,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:09,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127424839] [2025-03-09 06:43:09,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:09,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:09,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:43:09,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:43:09,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:09,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:09,197 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 06:43:09,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127424839] [2025-03-09 06:43:09,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127424839] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:09,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:09,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:09,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997068286] [2025-03-09 06:43:09,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:09,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:09,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:09,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:09,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:09,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-03-09 06:43:09,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 06:43:09,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:09,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-03-09 06:43:09,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:09,479 INFO L124 PetriNetUnfolderBase]: 1761/2718 cut-off events. [2025-03-09 06:43:09,479 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2025-03-09 06:43:09,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5469 conditions, 2718 events. 1761/2718 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 14907 event pairs, 1402 based on Foata normal form. 63/2211 useless extension candidates. Maximal degree in co-relation 4771. Up to 2052 conditions per place. [2025-03-09 06:43:09,502 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 49 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2025-03-09 06:43:09,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 274 flow [2025-03-09 06:43:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-03-09 06:43:09,503 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-03-09 06:43:09,504 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 124 flow. Second operand 4 states and 112 transitions. [2025-03-09 06:43:09,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 274 flow [2025-03-09 06:43:09,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 252 flow, removed 2 selfloop flow, removed 5 redundant places. [2025-03-09 06:43:09,505 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 133 flow [2025-03-09 06:43:09,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2025-03-09 06:43:09,506 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2025-03-09 06:43:09,506 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 133 flow [2025-03-09 06:43:09,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 06:43:09,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:09,506 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:43:09,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:43:09,507 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:09,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:09,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1155411418, now seen corresponding path program 1 times [2025-03-09 06:43:09,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:09,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778392278] [2025-03-09 06:43:09,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:09,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:09,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:43:09,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:43:09,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:09,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:09,583 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 06:43:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:09,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778392278] [2025-03-09 06:43:09,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778392278] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:09,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572605329] [2025-03-09 06:43:09,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:09,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:09,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:09,585 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 06:43:09,587 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 06:43:09,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:43:09,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:43:09,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:09,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:09,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:43:09,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:09,663 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 06:43:09,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:09,700 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 06:43:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572605329] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:09,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:43:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421536598] [2025-03-09 06:43:09,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:09,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:43:09,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:09,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:43:09,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:43:09,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-09 06:43:09,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 133 flow. Second operand has 12 states, 12 states have (on average 12.083333333333334) internal successors, (145), 12 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:09,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:09,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-09 06:43:09,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:09,993 INFO L124 PetriNetUnfolderBase]: 1764/2694 cut-off events. [2025-03-09 06:43:09,994 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2025-03-09 06:43:09,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6366 conditions, 2694 events. 1764/2694 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 14709 event pairs, 1490 based on Foata normal form. 3/2227 useless extension candidates. Maximal degree in co-relation 5612. Up to 2590 conditions per place. [2025-03-09 06:43:10,010 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 32 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2025-03-09 06:43:10,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 253 flow [2025-03-09 06:43:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:43:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:43:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2025-03-09 06:43:10,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32040816326530613 [2025-03-09 06:43:10,012 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 133 flow. Second operand 10 states and 157 transitions. [2025-03-09 06:43:10,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 253 flow [2025-03-09 06:43:10,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:10,014 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 204 flow [2025-03-09 06:43:10,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2025-03-09 06:43:10,015 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-03-09 06:43:10,015 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 204 flow [2025-03-09 06:43:10,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.083333333333334) internal successors, (145), 12 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:10,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:10,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:10,021 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 06:43:10,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-09 06:43:10,217 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:10,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:10,218 INFO L85 PathProgramCache]: Analyzing trace with hash 147618796, now seen corresponding path program 1 times [2025-03-09 06:43:10,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:10,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093842454] [2025-03-09 06:43:10,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:10,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:10,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:43:10,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:43:10,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:10,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:10,276 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 06:43:10,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:10,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093842454] [2025-03-09 06:43:10,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093842454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:10,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:10,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:43:10,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719639750] [2025-03-09 06:43:10,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:10,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:10,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:10,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:10,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:10,277 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-03-09 06:43:10,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:43:10,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:10,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-03-09 06:43:10,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:10,438 INFO L124 PetriNetUnfolderBase]: 1530/2354 cut-off events. [2025-03-09 06:43:10,438 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2025-03-09 06:43:10,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5466 conditions, 2354 events. 1530/2354 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 12598 event pairs, 1317 based on Foata normal form. 130/2025 useless extension candidates. Maximal degree in co-relation 5430. Up to 2256 conditions per place. [2025-03-09 06:43:10,449 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 40 selfloop transitions, 1 changer transitions 1/51 dead transitions. [2025-03-09 06:43:10,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 278 flow [2025-03-09 06:43:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2025-03-09 06:43:10,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-03-09 06:43:10,452 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 204 flow. Second operand 3 states and 70 transitions. [2025-03-09 06:43:10,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 278 flow [2025-03-09 06:43:10,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 263 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-09 06:43:10,454 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 176 flow [2025-03-09 06:43:10,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2025-03-09 06:43:10,455 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2025-03-09 06:43:10,456 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 176 flow [2025-03-09 06:43:10,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:43:10,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:10,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:10,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:43:10,456 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:10,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:10,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2048293384, now seen corresponding path program 1 times [2025-03-09 06:43:10,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:10,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755472770] [2025-03-09 06:43:10,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:10,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:10,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:43:10,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:43:10,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:10,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:10,570 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 06:43:10,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:10,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755472770] [2025-03-09 06:43:10,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755472770] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:10,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201481733] [2025-03-09 06:43:10,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:10,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:10,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:10,573 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 06:43:10,574 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 06:43:10,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:43:10,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:43:10,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:10,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:10,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:43:10,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:10,635 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 06:43:10,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:43:10,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201481733] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:10,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:43:10,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-03-09 06:43:10,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581389594] [2025-03-09 06:43:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:10,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:10,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:10,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:10,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:43:10,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-03-09 06:43:10,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:43:10,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:10,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-03-09 06:43:10,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:10,713 INFO L124 PetriNetUnfolderBase]: 661/1084 cut-off events. [2025-03-09 06:43:10,714 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2025-03-09 06:43:10,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2373 conditions, 1084 events. 661/1084 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5325 event pairs, 556 based on Foata normal form. 0/1016 useless extension candidates. Maximal degree in co-relation 2361. Up to 993 conditions per place. [2025-03-09 06:43:10,718 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 35 selfloop transitions, 1 changer transitions 1/46 dead transitions. [2025-03-09 06:43:10,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 234 flow [2025-03-09 06:43:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:10,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2025-03-09 06:43:10,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2025-03-09 06:43:10,719 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 176 flow. Second operand 3 states and 69 transitions. [2025-03-09 06:43:10,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 234 flow [2025-03-09 06:43:10,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:10,721 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 159 flow [2025-03-09 06:43:10,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2025-03-09 06:43:10,721 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2025-03-09 06:43:10,721 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 159 flow [2025-03-09 06:43:10,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:43:10,722 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:10,722 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:10,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:43:10,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:10,926 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:10,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1985194824, now seen corresponding path program 1 times [2025-03-09 06:43:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:10,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337916927] [2025-03-09 06:43:10,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:10,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:10,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:43:10,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:43:10,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:10,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:10,974 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 06:43:10,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:10,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337916927] [2025-03-09 06:43:10,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337916927] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:10,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:10,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:43:10,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246072326] [2025-03-09 06:43:10,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:10,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:10,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:10,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:10,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:10,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-09 06:43:10,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 06:43:10,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:10,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-09 06:43:10,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:11,068 INFO L124 PetriNetUnfolderBase]: 661/1054 cut-off events. [2025-03-09 06:43:11,069 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2025-03-09 06:43:11,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 1054 events. 661/1054 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4927 event pairs, 556 based on Foata normal form. 56/1057 useless extension candidates. Maximal degree in co-relation 2331. Up to 993 conditions per place. [2025-03-09 06:43:11,077 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 36 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2025-03-09 06:43:11,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 231 flow [2025-03-09 06:43:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-03-09 06:43:11,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2025-03-09 06:43:11,079 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 159 flow. Second operand 3 states and 60 transitions. [2025-03-09 06:43:11,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 231 flow [2025-03-09 06:43:11,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:11,081 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 158 flow [2025-03-09 06:43:11,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-03-09 06:43:11,082 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2025-03-09 06:43:11,082 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 158 flow [2025-03-09 06:43:11,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 06:43:11,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:11,083 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:11,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:43:11,083 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:11,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1411497878, now seen corresponding path program 1 times [2025-03-09 06:43:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410391659] [2025-03-09 06:43:11,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:11,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:11,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:43:11,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:43:11,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:11,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:11,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:11,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410391659] [2025-03-09 06:43:11,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410391659] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:11,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:11,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:11,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212382875] [2025-03-09 06:43:11,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:11,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:11,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:11,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:11,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:11,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2025-03-09 06:43:11,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 06:43:11,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:11,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2025-03-09 06:43:11,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:11,205 INFO L124 PetriNetUnfolderBase]: 372/717 cut-off events. [2025-03-09 06:43:11,205 INFO L125 PetriNetUnfolderBase]: For 121/128 co-relation queries the response was YES. [2025-03-09 06:43:11,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1535 conditions, 717 events. 372/717 cut-off events. For 121/128 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3524 event pairs, 134 based on Foata normal form. 28/739 useless extension candidates. Maximal degree in co-relation 1521. Up to 386 conditions per place. [2025-03-09 06:43:11,209 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 48 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2025-03-09 06:43:11,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 297 flow [2025-03-09 06:43:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-03-09 06:43:11,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2025-03-09 06:43:11,210 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 158 flow. Second operand 3 states and 80 transitions. [2025-03-09 06:43:11,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 297 flow [2025-03-09 06:43:11,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:11,211 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 180 flow [2025-03-09 06:43:11,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2025-03-09 06:43:11,212 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2025-03-09 06:43:11,212 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 180 flow [2025-03-09 06:43:11,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 06:43:11,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:11,212 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-09 06:43:11,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:43:11,213 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:11,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:11,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1122897668, now seen corresponding path program 2 times [2025-03-09 06:43:11,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:11,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562563033] [2025-03-09 06:43:11,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:11,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:11,225 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:43:11,230 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:43:11,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:43:11,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:11,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:11,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562563033] [2025-03-09 06:43:11,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562563033] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:11,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474585013] [2025-03-09 06:43:11,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:11,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:11,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:11,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:43:11,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:43:11,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:43:11,333 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 06:43:11,333 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 06:43:11,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:11,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:43:11,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:11,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:11,407 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:11,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474585013] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:11,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:11,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-09 06:43:11,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794013272] [2025-03-09 06:43:11,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:11,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:11,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:11,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:11,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:11,412 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-09 06:43:11,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 06:43:11,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:11,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-09 06:43:11,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:11,497 INFO L124 PetriNetUnfolderBase]: 372/680 cut-off events. [2025-03-09 06:43:11,497 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2025-03-09 06:43:11,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 680 events. 372/680 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3104 event pairs, 296 based on Foata normal form. 1/669 useless extension candidates. Maximal degree in co-relation 1621. Up to 583 conditions per place. [2025-03-09 06:43:11,501 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 23 selfloop transitions, 15 changer transitions 0/45 dead transitions. [2025-03-09 06:43:11,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 246 flow [2025-03-09 06:43:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2025-03-09 06:43:11,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2025-03-09 06:43:11,502 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 180 flow. Second operand 4 states and 70 transitions. [2025-03-09 06:43:11,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 246 flow [2025-03-09 06:43:11,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 45 transitions, 223 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-03-09 06:43:11,504 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 177 flow [2025-03-09 06:43:11,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2025-03-09 06:43:11,504 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2025-03-09 06:43:11,504 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 177 flow [2025-03-09 06:43:11,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 06:43:11,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:11,505 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:11,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:43:11,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:11,706 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2025-03-09 06:43:11,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:11,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1978216802, now seen corresponding path program 1 times [2025-03-09 06:43:11,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:11,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118866644] [2025-03-09 06:43:11,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:11,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:11,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 06:43:11,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 06:43:11,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:11,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 06:43:11,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:11,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118866644] [2025-03-09 06:43:11,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118866644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:11,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:11,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:11,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699042865] [2025-03-09 06:43:11,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:11,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:11,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:11,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:11,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:11,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-09 06:43:11,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:43:11,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:11,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-09 06:43:11,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:11,836 INFO L124 PetriNetUnfolderBase]: 372/717 cut-off events. [2025-03-09 06:43:11,837 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2025-03-09 06:43:11,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 717 events. 372/717 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3418 event pairs, 212 based on Foata normal form. 47/749 useless extension candidates. Maximal degree in co-relation 1526. Up to 450 conditions per place. [2025-03-09 06:43:11,838 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2025-03-09 06:43:11,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 317 flow [2025-03-09 06:43:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2025-03-09 06:43:11,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2025-03-09 06:43:11,839 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 177 flow. Second operand 3 states and 74 transitions. [2025-03-09 06:43:11,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 317 flow [2025-03-09 06:43:11,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 287 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:43:11,840 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2025-03-09 06:43:11,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2025-03-09 06:43:11,841 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2025-03-09 06:43:11,841 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2025-03-09 06:43:11,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 06:43:11,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 25 remaining) [2025-03-09 06:43:11,844 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 25 remaining) [2025-03-09 06:43:11,845 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2025-03-09 06:43:11,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2025-03-09 06:43:11,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:43:11,847 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:11,851 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:43:11,851 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:43:11,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:43:11 BasicIcfg [2025-03-09 06:43:11,858 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:43:11,858 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:43:11,859 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:43:11,859 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:43:11,859 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:07" (3/4) ... [2025-03-09 06:43:11,860 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:43:11,862 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-09 06:43:11,862 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-09 06:43:11,862 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-09 06:43:11,865 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 70 nodes and edges [2025-03-09 06:43:11,865 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2025-03-09 06:43:11,865 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-09 06:43:11,865 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-09 06:43:11,927 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:43:11,927 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:43:11,927 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:43:11,928 INFO L158 Benchmark]: Toolchain (without parser) took 5234.02ms. Allocated memory was 142.6MB in the beginning and 251.7MB in the end (delta: 109.1MB). Free memory was 113.2MB in the beginning and 195.6MB in the end (delta: -82.4MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2025-03-09 06:43:11,928 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:43:11,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.27ms. Allocated memory is still 142.6MB. Free memory was 113.2MB in the beginning and 101.0MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:43:11,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.53ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 99.4MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:43:11,929 INFO L158 Benchmark]: Boogie Preprocessor took 28.62ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 97.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:43:11,929 INFO L158 Benchmark]: IcfgBuilder took 612.06ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 48.2MB in the end (delta: 49.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-09 06:43:11,929 INFO L158 Benchmark]: TraceAbstraction took 4330.57ms. Allocated memory was 142.6MB in the beginning and 251.7MB in the end (delta: 109.1MB). Free memory was 47.3MB in the beginning and 201.4MB in the end (delta: -154.2MB). Peak memory consumption was 84.5MB. Max. memory is 16.1GB. [2025-03-09 06:43:11,929 INFO L158 Benchmark]: Witness Printer took 68.49ms. Allocated memory is still 251.7MB. Free memory was 201.4MB in the beginning and 195.6MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:43:11,930 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.27ms. Allocated memory is still 142.6MB. Free memory was 113.2MB in the beginning and 101.0MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.53ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 99.4MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.62ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 97.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 612.06ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 48.2MB in the end (delta: 49.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4330.57ms. Allocated memory was 142.6MB in the beginning and 251.7MB in the end (delta: 109.1MB). Free memory was 47.3MB in the beginning and 201.4MB in the end (delta: -154.2MB). Peak memory consumption was 84.5MB. Max. memory is 16.1GB. * Witness Printer took 68.49ms. Allocated memory is still 251.7MB. Free memory was 201.4MB in the beginning and 195.6MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 59]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 75]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 83]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 84]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 120]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 80 locations, 84 edges, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 810 IncrementalHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 15 mSDtfsCounter, 810 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=4, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 9 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 91/127 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 06:43:11,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE