./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:11:23,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:11:23,723 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:11:23,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:11:23,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:11:23,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:11:23,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:11:23,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:11:23,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:11:23,742 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:11:23,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:11:23,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:11:23,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:11:23,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:11:23,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:11:23,744 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:11:23,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:11:23,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:11:23,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:11:23,745 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:11:23,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:11:23,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:11:23,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:11:23,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:11:23,745 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:11:23,745 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:11:23,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:11:23,745 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-jdk21/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 -> fbe9f324c9eba6beb8c990e3f85f0b00a68548fe05ffdb4e97bc061354d1cdf2 [2025-02-08 14:11:23,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:11:23,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:11:23,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:11:23,939 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:11:23,940 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:11:23,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2025-02-08 14:11:25,091 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8ff2f3370/c89af4e2e26040d0a33e653fb761aaf4/FLAGeaf17f02c [2025-02-08 14:11:25,304 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:11:25,305 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-fun.wvr.c [2025-02-08 14:11:25,310 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8ff2f3370/c89af4e2e26040d0a33e653fb761aaf4/FLAGeaf17f02c [2025-02-08 14:11:25,651 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8ff2f3370/c89af4e2e26040d0a33e653fb761aaf4 [2025-02-08 14:11:25,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:11:25,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:11:25,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:11:25,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:11:25,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:11:25,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@480f5233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25, skipping insertion in model container [2025-02-08 14:11:25,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,681 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:11:25,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:11:25,802 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:11:25,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:11:25,826 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:11:25,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25 WrapperNode [2025-02-08 14:11:25,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:11:25,828 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:11:25,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:11:25,828 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:11:25,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,860 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 189 [2025-02-08 14:11:25,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:11:25,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:11:25,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:11:25,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:11:25,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,883 INFO L175 MemorySlicer]: Split 14 memory accesses to 2 slices as follows [2, 12]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-08 14:11:25,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,885 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,891 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:11:25,902 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:11:25,902 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:11:25,902 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:11:25,906 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (1/1) ... [2025-02-08 14:11:25,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:11:25,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:25,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:11:25,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:11:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:11:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:11:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:11:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:11:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:11:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:11:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:11:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:11:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:11:25,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:11:25,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:11:25,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:11:25,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:11:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:11:25,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:11:25,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:11:25,960 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:11:26,042 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:11:26,045 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:11:26,340 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:11:26,340 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:11:26,518 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:11:26,518 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:11:26,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:11:26 BoogieIcfgContainer [2025-02-08 14:11:26,519 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:11:26,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:11:26,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:11:26,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:11:26,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:11:25" (1/3) ... [2025-02-08 14:11:26,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f4ceb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:11:26, skipping insertion in model container [2025-02-08 14:11:26,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:11:25" (2/3) ... [2025-02-08 14:11:26,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f4ceb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:11:26, skipping insertion in model container [2025-02-08 14:11:26,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:11:26" (3/3) ... [2025-02-08 14:11:26,525 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2025-02-08 14:11:26,535 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:11:26,536 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-fun.wvr.c that has 3 procedures, 37 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2025-02-08 14:11:26,536 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:11:26,570 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:11:26,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2025-02-08 14:11:26,609 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2025-02-08 14:11:26,611 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:11:26,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2025-02-08 14:11:26,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2025-02-08 14:11:26,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 81 flow [2025-02-08 14:11:26,620 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:11:26,627 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;@7a5003f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:11:26,627 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-02-08 14:11:26,630 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:11:26,630 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:11:26,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:11:26,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:26,631 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:11:26,631 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:26,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash 524217, now seen corresponding path program 1 times [2025-02-08 14:11:26,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:26,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333823218] [2025-02-08 14:11:26,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:26,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:11:26,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:11:26,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:26,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:26,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:26,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333823218] [2025-02-08 14:11:26,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333823218] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:26,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:26,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:26,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894193146] [2025-02-08 14:11:26,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:26,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:26,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:26,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:26,818 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-02-08 14:11:26,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:26,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:26,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-02-08 14:11:26,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:26,938 INFO L124 PetriNetUnfolderBase]: 65/171 cut-off events. [2025-02-08 14:11:26,938 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-02-08 14:11:26,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 171 events. 65/171 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 654 event pairs, 42 based on Foata normal form. 2/154 useless extension candidates. Maximal degree in co-relation 245. Up to 118 conditions per place. [2025-02-08 14:11:26,940 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 23 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2025-02-08 14:11:26,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 153 flow [2025-02-08 14:11:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2025-02-08 14:11:26,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-08 14:11:26,949 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 81 flow. Second operand 4 states and 90 transitions. [2025-02-08 14:11:26,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 153 flow [2025-02-08 14:11:26,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 148 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:26,953 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 136 flow [2025-02-08 14:11:26,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2025-02-08 14:11:26,957 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2025-02-08 14:11:26,957 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 136 flow [2025-02-08 14:11:26,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:26,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:26,957 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:11:26,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:11:26,957 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:26,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:26,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1562446292, now seen corresponding path program 1 times [2025-02-08 14:11:26,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:26,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541847067] [2025-02-08 14:11:26,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:26,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:26,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:11:26,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:11:26,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:26,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:27,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:27,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541847067] [2025-02-08 14:11:27,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541847067] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:27,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550290652] [2025-02-08 14:11:27,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:27,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:27,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:27,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:27,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:11:27,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:11:27,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:11:27,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:27,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:27,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:27,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:27,254 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:27,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550290652] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:27,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:27,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:11:27,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300570509] [2025-02-08 14:11:27,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:27,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:11:27,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:27,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:11:27,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:11:27,269 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-02-08 14:11:27,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-02-08 14:11:27,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:27,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-02-08 14:11:27,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:27,395 INFO L124 PetriNetUnfolderBase]: 65/169 cut-off events. [2025-02-08 14:11:27,395 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-02-08 14:11:27,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 169 events. 65/169 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 638 event pairs, 42 based on Foata normal form. 2/155 useless extension candidates. Maximal degree in co-relation 275. Up to 108 conditions per place. [2025-02-08 14:11:27,396 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 16 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2025-02-08 14:11:27,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 184 flow [2025-02-08 14:11:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:11:27,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:11:27,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-02-08 14:11:27,398 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.475 [2025-02-08 14:11:27,398 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 136 flow. Second operand 6 states and 114 transitions. [2025-02-08 14:11:27,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 184 flow [2025-02-08 14:11:27,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:11:27,399 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 152 flow [2025-02-08 14:11:27,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2025-02-08 14:11:27,400 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2025-02-08 14:11:27,400 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 152 flow [2025-02-08 14:11:27,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-02-08 14:11:27,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:27,400 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:11:27,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:11:27,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:27,602 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:27,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1191194320, now seen corresponding path program 1 times [2025-02-08 14:11:27,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:27,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372133115] [2025-02-08 14:11:27,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:27,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:27,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:27,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:27,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372133115] [2025-02-08 14:11:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372133115] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445954519] [2025-02-08 14:11:27,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:27,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:27,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:27,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:27,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:11:27,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:27,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:27,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:27,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:27,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:27,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:27,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:27,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445954519] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:27,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:27,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-08 14:11:27,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306963092] [2025-02-08 14:11:27,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:27,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:11:27,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:27,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:11:27,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:11:27,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-02-08 14:11:27,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 152 flow. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-02-08 14:11:27,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:27,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-02-08 14:11:27,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:28,034 INFO L124 PetriNetUnfolderBase]: 71/193 cut-off events. [2025-02-08 14:11:28,035 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2025-02-08 14:11:28,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 193 events. 71/193 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 784 event pairs, 42 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 277. Up to 119 conditions per place. [2025-02-08 14:11:28,037 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 21 selfloop transitions, 25 changer transitions 0/58 dead transitions. [2025-02-08 14:11:28,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 358 flow [2025-02-08 14:11:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2025-02-08 14:11:28,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2025-02-08 14:11:28,039 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 152 flow. Second operand 10 states and 192 transitions. [2025-02-08 14:11:28,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 358 flow [2025-02-08 14:11:28,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 300 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-02-08 14:11:28,041 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 292 flow [2025-02-08 14:11:28,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2025-02-08 14:11:28,042 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2025-02-08 14:11:28,042 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 292 flow [2025-02-08 14:11:28,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 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) [2025-02-08 14:11:28,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:28,042 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:28,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:28,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:28,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:28,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2005354475, now seen corresponding path program 1 times [2025-02-08 14:11:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:28,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759984800] [2025-02-08 14:11:28,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:28,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:28,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:11:28,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:11:28,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:28,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:28,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:28,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759984800] [2025-02-08 14:11:28,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759984800] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:28,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:28,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:28,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843899024] [2025-02-08 14:11:28,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:28,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:28,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:28,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:28,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:28,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-02-08 14:11:28,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2025-02-08 14:11:28,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:28,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-02-08 14:11:28,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:28,454 INFO L124 PetriNetUnfolderBase]: 165/365 cut-off events. [2025-02-08 14:11:28,455 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2025-02-08 14:11:28,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 365 events. 165/365 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1583 event pairs, 67 based on Foata normal form. 10/355 useless extension candidates. Maximal degree in co-relation 701. Up to 219 conditions per place. [2025-02-08 14:11:28,457 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 61 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2025-02-08 14:11:28,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 462 flow [2025-02-08 14:11:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2025-02-08 14:11:28,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64375 [2025-02-08 14:11:28,459 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 292 flow. Second operand 4 states and 103 transitions. [2025-02-08 14:11:28,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 462 flow [2025-02-08 14:11:28,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 438 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:28,462 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 297 flow [2025-02-08 14:11:28,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2025-02-08 14:11:28,463 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2025-02-08 14:11:28,463 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 297 flow [2025-02-08 14:11:28,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2025-02-08 14:11:28,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:28,463 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:28,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:11:28,463 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:28,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:28,464 INFO L85 PathProgramCache]: Analyzing trace with hash -741401244, now seen corresponding path program 1 times [2025-02-08 14:11:28,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:28,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018829996] [2025-02-08 14:11:28,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:28,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:28,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:11:28,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:11:28,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:28,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:28,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:28,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018829996] [2025-02-08 14:11:28,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018829996] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:28,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:28,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:28,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458443131] [2025-02-08 14:11:28,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:28,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:28,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:28,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:28,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-02-08 14:11:28,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:28,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:28,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-02-08 14:11:28,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:28,637 INFO L124 PetriNetUnfolderBase]: 248/482 cut-off events. [2025-02-08 14:11:28,637 INFO L125 PetriNetUnfolderBase]: For 209/264 co-relation queries the response was YES. [2025-02-08 14:11:28,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 482 events. 248/482 cut-off events. For 209/264 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2006 event pairs, 117 based on Foata normal form. 32/493 useless extension candidates. Maximal degree in co-relation 1080. Up to 310 conditions per place. [2025-02-08 14:11:28,640 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 65 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2025-02-08 14:11:28,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 503 flow [2025-02-08 14:11:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-02-08 14:11:28,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63125 [2025-02-08 14:11:28,644 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 297 flow. Second operand 4 states and 101 transitions. [2025-02-08 14:11:28,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 503 flow [2025-02-08 14:11:28,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:28,649 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 323 flow [2025-02-08 14:11:28,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=323, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2025-02-08 14:11:28,650 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 20 predicate places. [2025-02-08 14:11:28,650 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 323 flow [2025-02-08 14:11:28,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:28,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:28,651 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:28,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:11:28,651 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:28,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash -104081278, now seen corresponding path program 1 times [2025-02-08 14:11:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782639381] [2025-02-08 14:11:28,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:28,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:28,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:11:28,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:11:28,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:28,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:28,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:28,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782639381] [2025-02-08 14:11:28,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782639381] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:28,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:28,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:11:28,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621201941] [2025-02-08 14:11:28,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:28,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:28,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:28,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:28,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:28,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2025-02-08 14:11:28,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:28,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:28,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2025-02-08 14:11:28,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:28,903 INFO L124 PetriNetUnfolderBase]: 190/468 cut-off events. [2025-02-08 14:11:28,903 INFO L125 PetriNetUnfolderBase]: For 245/276 co-relation queries the response was YES. [2025-02-08 14:11:28,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 468 events. 190/468 cut-off events. For 245/276 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2126 event pairs, 122 based on Foata normal form. 25/484 useless extension candidates. Maximal degree in co-relation 1110. Up to 273 conditions per place. [2025-02-08 14:11:28,906 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 54 selfloop transitions, 4 changer transitions 14/88 dead transitions. [2025-02-08 14:11:28,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 592 flow [2025-02-08 14:11:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:11:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:11:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2025-02-08 14:11:28,907 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-02-08 14:11:28,907 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 323 flow. Second operand 5 states and 130 transitions. [2025-02-08 14:11:28,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 592 flow [2025-02-08 14:11:28,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:28,927 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 346 flow [2025-02-08 14:11:28,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2025-02-08 14:11:28,928 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2025-02-08 14:11:28,928 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 346 flow [2025-02-08 14:11:28,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:28,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:28,928 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-02-08 14:11:28,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 14:11:28,928 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:28,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:28,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1934068483, now seen corresponding path program 2 times [2025-02-08 14:11:28,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:28,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198954468] [2025-02-08 14:11:28,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:28,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:28,937 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:11:28,940 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:11:28,941 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:28,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:28,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:28,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198954468] [2025-02-08 14:11:28,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198954468] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:28,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462207832] [2025-02-08 14:11:28,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:28,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:28,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:28,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:11:29,019 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:11:29,026 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-02-08 14:11:29,026 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:29,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:29,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:11:29,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:29,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:11:29,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462207832] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:29,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:29,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:11:29,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841081669] [2025-02-08 14:11:29,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:29,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:29,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:29,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:29,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:29,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-02-08 14:11:29,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-02-08 14:11:29,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:29,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-02-08 14:11:29,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:29,157 INFO L124 PetriNetUnfolderBase]: 189/466 cut-off events. [2025-02-08 14:11:29,158 INFO L125 PetriNetUnfolderBase]: For 285/316 co-relation queries the response was YES. [2025-02-08 14:11:29,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1231 conditions, 466 events. 189/466 cut-off events. For 285/316 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2157 event pairs, 122 based on Foata normal form. 12/467 useless extension candidates. Maximal degree in co-relation 1135. Up to 330 conditions per place. [2025-02-08 14:11:29,159 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 34 selfloop transitions, 16 changer transitions 0/64 dead transitions. [2025-02-08 14:11:29,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 436 flow [2025-02-08 14:11:29,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:29,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-08 14:11:29,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4875 [2025-02-08 14:11:29,160 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 346 flow. Second operand 4 states and 78 transitions. [2025-02-08 14:11:29,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 436 flow [2025-02-08 14:11:29,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 432 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:29,171 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 364 flow [2025-02-08 14:11:29,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2025-02-08 14:11:29,172 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2025-02-08 14:11:29,172 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 364 flow [2025-02-08 14:11:29,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-02-08 14:11:29,172 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:29,172 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-02-08 14:11:29,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:29,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:29,380 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:29,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:29,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1987049790, now seen corresponding path program 1 times [2025-02-08 14:11:29,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508371169] [2025-02-08 14:11:29,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:29,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:29,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:11:29,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:11:29,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:29,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:29,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:29,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508371169] [2025-02-08 14:11:29,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508371169] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:29,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281633694] [2025-02-08 14:11:29,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:29,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:29,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:29,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:29,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:11:29,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:11:29,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:11:29,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:29,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:29,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 14:11:29,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:29,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:29,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281633694] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:29,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:29,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-08 14:11:29,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386838087] [2025-02-08 14:11:29,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:29,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 14:11:29,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:29,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 14:11:29,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-08 14:11:29,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-02-08 14:11:29,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 364 flow. Second operand has 24 states, 24 states have (on average 15.083333333333334) internal successors, (362), 24 states have internal predecessors, (362), 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) [2025-02-08 14:11:29,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:29,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-02-08 14:11:29,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:30,054 INFO L124 PetriNetUnfolderBase]: 207/538 cut-off events. [2025-02-08 14:11:30,054 INFO L125 PetriNetUnfolderBase]: For 544/575 co-relation queries the response was YES. [2025-02-08 14:11:30,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 538 events. 207/538 cut-off events. For 544/575 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2508 event pairs, 122 based on Foata normal form. 23/532 useless extension candidates. Maximal degree in co-relation 1144. Up to 326 conditions per place. [2025-02-08 14:11:30,057 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 24 selfloop transitions, 62 changer transitions 0/100 dead transitions. [2025-02-08 14:11:30,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 806 flow [2025-02-08 14:11:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 14:11:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 14:11:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 395 transitions. [2025-02-08 14:11:30,059 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44886363636363635 [2025-02-08 14:11:30,059 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 364 flow. Second operand 22 states and 395 transitions. [2025-02-08 14:11:30,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 806 flow [2025-02-08 14:11:30,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 100 transitions, 723 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:30,064 INFO L231 Difference]: Finished difference. Result has 88 places, 100 transitions, 721 flow [2025-02-08 14:11:30,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=721, PETRI_PLACES=88, PETRI_TRANSITIONS=100} [2025-02-08 14:11:30,066 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 49 predicate places. [2025-02-08 14:11:30,066 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 100 transitions, 721 flow [2025-02-08 14:11:30,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.083333333333334) internal successors, (362), 24 states have internal predecessors, (362), 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) [2025-02-08 14:11:30,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:30,067 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:30,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 14:11:30,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-08 14:11:30,267 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:30,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2129423407, now seen corresponding path program 1 times [2025-02-08 14:11:30,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:30,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825642692] [2025-02-08 14:11:30,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:30,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:30,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:11:30,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:11:30,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:30,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:30,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825642692] [2025-02-08 14:11:30,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825642692] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138724276] [2025-02-08 14:11:30,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:30,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:30,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:30,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:30,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:11:30,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:11:30,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:11:30,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:30,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:30,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:30,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:30,491 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:30,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138724276] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:30,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:30,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:11:30,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078355133] [2025-02-08 14:11:30,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:30,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:11:30,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:30,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:11:30,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:11:30,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-02-08 14:11:30,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 100 transitions, 721 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2025-02-08 14:11:30,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:30,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-02-08 14:11:30,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:30,645 INFO L124 PetriNetUnfolderBase]: 273/645 cut-off events. [2025-02-08 14:11:30,646 INFO L125 PetriNetUnfolderBase]: For 615/637 co-relation queries the response was YES. [2025-02-08 14:11:30,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 645 events. 273/645 cut-off events. For 615/637 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3041 event pairs, 39 based on Foata normal form. 22/648 useless extension candidates. Maximal degree in co-relation 1745. Up to 218 conditions per place. [2025-02-08 14:11:30,648 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 118 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2025-02-08 14:11:30,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 1099 flow [2025-02-08 14:11:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:11:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:11:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2025-02-08 14:11:30,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-02-08 14:11:30,649 INFO L175 Difference]: Start difference. First operand has 88 places, 100 transitions, 721 flow. Second operand 6 states and 145 transitions. [2025-02-08 14:11:30,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 1099 flow [2025-02-08 14:11:30,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 136 transitions, 941 flow, removed 47 selfloop flow, removed 9 redundant places. [2025-02-08 14:11:30,653 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 573 flow [2025-02-08 14:11:30,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2025-02-08 14:11:30,654 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2025-02-08 14:11:30,654 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 573 flow [2025-02-08 14:11:30,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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) [2025-02-08 14:11:30,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:30,654 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:30,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:30,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:30,855 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:30,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:30,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1587616665, now seen corresponding path program 1 times [2025-02-08 14:11:30,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800783212] [2025-02-08 14:11:30,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:30,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:11:30,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:11:30,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:30,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800783212] [2025-02-08 14:11:30,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800783212] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:30,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947362837] [2025-02-08 14:11:30,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:30,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:30,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:30,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:30,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 14:11:30,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 14:11:30,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 14:11:30,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:30,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:30,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:30,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:31,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:11:31,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947362837] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:31,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:31,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:11:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923918566] [2025-02-08 14:11:31,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:31,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:11:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:31,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:11:31,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:11:31,079 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-02-08 14:11:31,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 573 flow. Second operand has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2025-02-08 14:11:31,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:31,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-02-08 14:11:31,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:31,314 INFO L124 PetriNetUnfolderBase]: 513/1105 cut-off events. [2025-02-08 14:11:31,314 INFO L125 PetriNetUnfolderBase]: For 1000/1068 co-relation queries the response was YES. [2025-02-08 14:11:31,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 1105 events. 513/1105 cut-off events. For 1000/1068 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5338 event pairs, 113 based on Foata normal form. 66/1161 useless extension candidates. Maximal degree in co-relation 3035. Up to 418 conditions per place. [2025-02-08 14:11:31,320 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 160 selfloop transitions, 13 changer transitions 0/184 dead transitions. [2025-02-08 14:11:31,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 184 transitions, 1245 flow [2025-02-08 14:11:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2025-02-08 14:11:31,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6175 [2025-02-08 14:11:31,321 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 573 flow. Second operand 10 states and 247 transitions. [2025-02-08 14:11:31,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 184 transitions, 1245 flow [2025-02-08 14:11:31,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 184 transitions, 1215 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:31,327 INFO L231 Difference]: Finished difference. Result has 91 places, 108 transitions, 641 flow [2025-02-08 14:11:31,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=641, PETRI_PLACES=91, PETRI_TRANSITIONS=108} [2025-02-08 14:11:31,328 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 52 predicate places. [2025-02-08 14:11:31,328 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 108 transitions, 641 flow [2025-02-08 14:11:31,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.0) internal successors, (204), 12 states have internal predecessors, (204), 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) [2025-02-08 14:11:31,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:31,328 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:31,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:11:31,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 14:11:31,529 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:31,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:31,529 INFO L85 PathProgramCache]: Analyzing trace with hash 946401503, now seen corresponding path program 1 times [2025-02-08 14:11:31,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:31,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701444552] [2025-02-08 14:11:31,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:31,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:31,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 14:11:31,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 14:11:31,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:31,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 14:11:31,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:31,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701444552] [2025-02-08 14:11:31,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701444552] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:31,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:31,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:11:31,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473436434] [2025-02-08 14:11:31,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:31,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:11:31,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:31,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:11:31,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:11:31,653 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2025-02-08 14:11:31,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 108 transitions, 641 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2025-02-08 14:11:31,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:31,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2025-02-08 14:11:31,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:31,790 INFO L124 PetriNetUnfolderBase]: 412/1078 cut-off events. [2025-02-08 14:11:31,790 INFO L125 PetriNetUnfolderBase]: For 1185/1197 co-relation queries the response was YES. [2025-02-08 14:11:31,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3010 conditions, 1078 events. 412/1078 cut-off events. For 1185/1197 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5645 event pairs, 114 based on Foata normal form. 15/1079 useless extension candidates. Maximal degree in co-relation 2897. Up to 479 conditions per place. [2025-02-08 14:11:31,796 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 84 selfloop transitions, 16 changer transitions 10/127 dead transitions. [2025-02-08 14:11:31,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 127 transitions, 930 flow [2025-02-08 14:11:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:11:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:11:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-02-08 14:11:31,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.67 [2025-02-08 14:11:31,799 INFO L175 Difference]: Start difference. First operand has 91 places, 108 transitions, 641 flow. Second operand 5 states and 134 transitions. [2025-02-08 14:11:31,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 127 transitions, 930 flow [2025-02-08 14:11:31,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 915 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:31,806 INFO L231 Difference]: Finished difference. Result has 95 places, 109 transitions, 688 flow [2025-02-08 14:11:31,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=688, PETRI_PLACES=95, PETRI_TRANSITIONS=109} [2025-02-08 14:11:31,808 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2025-02-08 14:11:31,808 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 109 transitions, 688 flow [2025-02-08 14:11:31,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2025-02-08 14:11:31,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:31,809 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:31,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:11:31,809 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:31,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1029679703, now seen corresponding path program 1 times [2025-02-08 14:11:31,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:31,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115482317] [2025-02-08 14:11:31,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:31,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:31,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 14:11:31,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:11:31,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:31,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:31,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:31,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115482317] [2025-02-08 14:11:31,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115482317] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:31,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244565661] [2025-02-08 14:11:31,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:31,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:31,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:31,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:31,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 14:11:31,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 14:11:31,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 14:11:31,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:31,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:31,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:31,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:32,011 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:11:32,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244565661] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:32,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:11:32,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:11:32,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139461637] [2025-02-08 14:11:32,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:32,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:11:32,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:32,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:11:32,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:11:32,021 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-02-08 14:11:32,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 109 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2025-02-08 14:11:32,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:32,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-02-08 14:11:32,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:32,210 INFO L124 PetriNetUnfolderBase]: 525/1103 cut-off events. [2025-02-08 14:11:32,210 INFO L125 PetriNetUnfolderBase]: For 1797/1821 co-relation queries the response was YES. [2025-02-08 14:11:32,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 1103 events. 525/1103 cut-off events. For 1797/1821 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5282 event pairs, 93 based on Foata normal form. 25/1086 useless extension candidates. Maximal degree in co-relation 3395. Up to 347 conditions per place. [2025-02-08 14:11:32,217 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 146 selfloop transitions, 7 changer transitions 0/166 dead transitions. [2025-02-08 14:11:32,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 166 transitions, 1309 flow [2025-02-08 14:11:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:11:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:11:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2025-02-08 14:11:32,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5875 [2025-02-08 14:11:32,218 INFO L175 Difference]: Start difference. First operand has 95 places, 109 transitions, 688 flow. Second operand 6 states and 141 transitions. [2025-02-08 14:11:32,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 166 transitions, 1309 flow [2025-02-08 14:11:32,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1277 flow, removed 14 selfloop flow, removed 2 redundant places. [2025-02-08 14:11:32,225 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 687 flow [2025-02-08 14:11:32,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=687, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2025-02-08 14:11:32,225 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 57 predicate places. [2025-02-08 14:11:32,225 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 687 flow [2025-02-08 14:11:32,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2025-02-08 14:11:32,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:32,226 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:32,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:32,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:32,427 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:32,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:32,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1855299224, now seen corresponding path program 1 times [2025-02-08 14:11:32,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:32,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632548894] [2025-02-08 14:11:32,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:32,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:32,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 14:11:32,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 14:11:32,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:32,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:32,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632548894] [2025-02-08 14:11:32,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632548894] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90341115] [2025-02-08 14:11:32,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:32,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:32,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:32,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:32,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 14:11:32,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 14:11:32,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 14:11:32,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:32,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:32,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:32,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:32,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:32,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90341115] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:32,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:32,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:11:32,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680326807] [2025-02-08 14:11:32,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:32,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:11:32,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:32,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:11:32,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:11:32,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-02-08 14:11:32,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 687 flow. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:32,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:32,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-02-08 14:11:32,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:32,946 INFO L124 PetriNetUnfolderBase]: 1005/1963 cut-off events. [2025-02-08 14:11:32,946 INFO L125 PetriNetUnfolderBase]: For 2658/2736 co-relation queries the response was YES. [2025-02-08 14:11:32,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5970 conditions, 1963 events. 1005/1963 cut-off events. For 2658/2736 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9928 event pairs, 187 based on Foata normal form. 75/2021 useless extension candidates. Maximal degree in co-relation 5853. Up to 727 conditions per place. [2025-02-08 14:11:32,958 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 208 selfloop transitions, 13 changer transitions 0/234 dead transitions. [2025-02-08 14:11:32,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 234 transitions, 1781 flow [2025-02-08 14:11:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2025-02-08 14:11:32,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5975 [2025-02-08 14:11:32,960 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 687 flow. Second operand 10 states and 239 transitions. [2025-02-08 14:11:32,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 234 transitions, 1781 flow [2025-02-08 14:11:32,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 234 transitions, 1751 flow, removed 8 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:32,967 INFO L231 Difference]: Finished difference. Result has 104 places, 117 transitions, 755 flow [2025-02-08 14:11:32,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=755, PETRI_PLACES=104, PETRI_TRANSITIONS=117} [2025-02-08 14:11:32,968 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2025-02-08 14:11:32,968 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 117 transitions, 755 flow [2025-02-08 14:11:32,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 12 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:32,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:32,968 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2025-02-08 14:11:32,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 14:11:33,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:33,169 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:33,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:33,170 INFO L85 PathProgramCache]: Analyzing trace with hash 480488002, now seen corresponding path program 2 times [2025-02-08 14:11:33,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:33,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561086863] [2025-02-08 14:11:33,170 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:33,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:33,178 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 14:11:33,181 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-02-08 14:11:33,181 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:33,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:11:33,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:33,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561086863] [2025-02-08 14:11:33,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561086863] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:33,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568942380] [2025-02-08 14:11:33,204 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:33,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:33,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:33,211 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:33,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 14:11:33,263 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-02-08 14:11:33,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 35 statements. [2025-02-08 14:11:33,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:33,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:33,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:11:33,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:11:33,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:11:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568942380] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:33,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:33,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:11:33,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261962448] [2025-02-08 14:11:33,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:33,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:11:33,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:33,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:11:33,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:11:33,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-02-08 14:11:33,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 117 transitions, 755 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:33,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:33,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-02-08 14:11:33,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:33,523 INFO L124 PetriNetUnfolderBase]: 735/1626 cut-off events. [2025-02-08 14:11:33,524 INFO L125 PetriNetUnfolderBase]: For 2572/2631 co-relation queries the response was YES. [2025-02-08 14:11:33,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4936 conditions, 1626 events. 735/1626 cut-off events. For 2572/2631 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 8537 event pairs, 437 based on Foata normal form. 2/1601 useless extension candidates. Maximal degree in co-relation 4839. Up to 1091 conditions per place. [2025-02-08 14:11:33,533 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 41 selfloop transitions, 55 changer transitions 2/116 dead transitions. [2025-02-08 14:11:33,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 116 transitions, 929 flow [2025-02-08 14:11:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:11:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:11:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2025-02-08 14:11:33,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.455 [2025-02-08 14:11:33,535 INFO L175 Difference]: Start difference. First operand has 104 places, 117 transitions, 755 flow. Second operand 5 states and 91 transitions. [2025-02-08 14:11:33,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 116 transitions, 929 flow [2025-02-08 14:11:33,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 116 transitions, 873 flow, removed 5 selfloop flow, removed 12 redundant places. [2025-02-08 14:11:33,541 INFO L231 Difference]: Finished difference. Result has 95 places, 114 transitions, 767 flow [2025-02-08 14:11:33,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=767, PETRI_PLACES=95, PETRI_TRANSITIONS=114} [2025-02-08 14:11:33,542 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2025-02-08 14:11:33,542 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 114 transitions, 767 flow [2025-02-08 14:11:33,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:33,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:33,542 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:33,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:33,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:33,743 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:33,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:33,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1099624556, now seen corresponding path program 1 times [2025-02-08 14:11:33,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:33,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625501721] [2025-02-08 14:11:33,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:33,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:33,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-08 14:11:33,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 14:11:33,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:33,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:33,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:33,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625501721] [2025-02-08 14:11:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625501721] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:33,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335706515] [2025-02-08 14:11:33,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:33,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:33,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:33,916 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:33,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 14:11:33,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-08 14:11:33,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 14:11:33,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:33,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:33,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 14:11:33,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:34,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 14:11:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335706515] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:34,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:34,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-02-08 14:11:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624857720] [2025-02-08 14:11:34,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:34,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 14:11:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:34,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 14:11:34,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-02-08 14:11:34,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2025-02-08 14:11:34,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 114 transitions, 767 flow. Second operand has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2025-02-08 14:11:34,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:34,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2025-02-08 14:11:34,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:35,014 INFO L124 PetriNetUnfolderBase]: 1963/3657 cut-off events. [2025-02-08 14:11:35,014 INFO L125 PetriNetUnfolderBase]: For 6639/6761 co-relation queries the response was YES. [2025-02-08 14:11:35,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11018 conditions, 3657 events. 1963/3657 cut-off events. For 6639/6761 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 19308 event pairs, 143 based on Foata normal form. 156/3797 useless extension candidates. Maximal degree in co-relation 10813. Up to 807 conditions per place. [2025-02-08 14:11:35,033 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 400 selfloop transitions, 31 changer transitions 0/443 dead transitions. [2025-02-08 14:11:35,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 443 transitions, 3289 flow [2025-02-08 14:11:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 14:11:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 14:11:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 538 transitions. [2025-02-08 14:11:35,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6113636363636363 [2025-02-08 14:11:35,035 INFO L175 Difference]: Start difference. First operand has 95 places, 114 transitions, 767 flow. Second operand 22 states and 538 transitions. [2025-02-08 14:11:35,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 443 transitions, 3289 flow [2025-02-08 14:11:35,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 443 transitions, 3181 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-02-08 14:11:35,044 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 867 flow [2025-02-08 14:11:35,044 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=867, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2025-02-08 14:11:35,045 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2025-02-08 14:11:35,045 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 867 flow [2025-02-08 14:11:35,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.833333333333332) internal successors, (404), 24 states have internal predecessors, (404), 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) [2025-02-08 14:11:35,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:35,045 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:35,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 14:11:35,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-08 14:11:35,249 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:35,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:35,249 INFO L85 PathProgramCache]: Analyzing trace with hash 418820804, now seen corresponding path program 2 times [2025-02-08 14:11:35,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:35,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702692529] [2025-02-08 14:11:35,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:35,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:35,260 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-08 14:11:35,263 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 38 statements. [2025-02-08 14:11:35,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:35,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 14:11:35,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:35,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702692529] [2025-02-08 14:11:35,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702692529] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:35,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665177157] [2025-02-08 14:11:35,303 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:35,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:35,309 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:35,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 14:11:35,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-08 14:11:35,369 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 38 statements. [2025-02-08 14:11:35,369 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:11:35,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:35,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:11:35,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 14:11:35,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 14:11:35,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665177157] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:35,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:35,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:11:35,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999718823] [2025-02-08 14:11:35,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:35,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:11:35,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:35,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:11:35,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:11:35,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-02-08 14:11:35,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 867 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2025-02-08 14:11:35,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:35,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-02-08 14:11:35,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:35,847 INFO L124 PetriNetUnfolderBase]: 2343/4281 cut-off events. [2025-02-08 14:11:35,848 INFO L125 PetriNetUnfolderBase]: For 10265/10443 co-relation queries the response was YES. [2025-02-08 14:11:35,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14209 conditions, 4281 events. 2343/4281 cut-off events. For 10265/10443 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 22366 event pairs, 477 based on Foata normal form. 49/4195 useless extension candidates. Maximal degree in co-relation 13896. Up to 1575 conditions per place. [2025-02-08 14:11:35,872 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 118 selfloop transitions, 14 changer transitions 36/185 dead transitions. [2025-02-08 14:11:35,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 185 transitions, 1603 flow [2025-02-08 14:11:35,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:11:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:11:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2025-02-08 14:11:35,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.535 [2025-02-08 14:11:35,876 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 867 flow. Second operand 5 states and 107 transitions. [2025-02-08 14:11:35,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 185 transitions, 1603 flow [2025-02-08 14:11:35,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 185 transitions, 1397 flow, removed 68 selfloop flow, removed 13 redundant places. [2025-02-08 14:11:35,891 INFO L231 Difference]: Finished difference. Result has 106 places, 120 transitions, 751 flow [2025-02-08 14:11:35,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=751, PETRI_PLACES=106, PETRI_TRANSITIONS=120} [2025-02-08 14:11:35,892 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2025-02-08 14:11:35,892 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 120 transitions, 751 flow [2025-02-08 14:11:35,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2025-02-08 14:11:35,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:35,892 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:35,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:36,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 14:11:36,093 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:11:36,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1783001548, now seen corresponding path program 2 times [2025-02-08 14:11:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:36,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799660735] [2025-02-08 14:11:36,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:36,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:36,112 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-02-08 14:11:36,125 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 14:11:36,125 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:11:36,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2025-02-08 14:11:36,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:36,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799660735] [2025-02-08 14:11:36,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799660735] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:36,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541337178] [2025-02-08 14:11:36,197 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:11:36,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:36,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:36,199 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:36,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 14:11:36,267 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-02-08 14:11:36,294 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 14:11:36,294 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:11:36,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:36,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:11:36,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:36,360 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2025-02-08 14:11:36,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2025-02-08 14:11:36,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541337178] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:36,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:36,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-08 14:11:36,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536261981] [2025-02-08 14:11:36,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:36,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:11:36,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:36,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:11:36,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:11:36,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2025-02-08 14:11:36,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 751 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:36,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:36,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2025-02-08 14:11:36,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:36,832 INFO L124 PetriNetUnfolderBase]: 2094/3983 cut-off events. [2025-02-08 14:11:36,832 INFO L125 PetriNetUnfolderBase]: For 9730/9878 co-relation queries the response was YES. [2025-02-08 14:11:36,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12470 conditions, 3983 events. 2094/3983 cut-off events. For 9730/9878 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 21323 event pairs, 458 based on Foata normal form. 26/3903 useless extension candidates. Maximal degree in co-relation 12159. Up to 1664 conditions per place. [2025-02-08 14:11:36,844 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 151/151 dead transitions. [2025-02-08 14:11:36,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 151 transitions, 1195 flow [2025-02-08 14:11:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 14:11:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 14:11:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2025-02-08 14:11:36,845 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53 [2025-02-08 14:11:36,845 INFO L175 Difference]: Start difference. First operand has 106 places, 120 transitions, 751 flow. Second operand 5 states and 106 transitions. [2025-02-08 14:11:36,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 151 transitions, 1195 flow [2025-02-08 14:11:36,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 151 transitions, 1140 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-02-08 14:11:36,858 INFO L231 Difference]: Finished difference. Result has 94 places, 0 transitions, 0 flow [2025-02-08 14:11:36,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=94, PETRI_TRANSITIONS=0} [2025-02-08 14:11:36,858 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2025-02-08 14:11:36,858 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 0 transitions, 0 flow [2025-02-08 14:11:36,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:36,861 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2025-02-08 14:11:36,862 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2025-02-08 14:11:36,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 14:11:37,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-08 14:11:37,063 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:37,067 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:11:37,067 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:11:37,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:11:37 BasicIcfg [2025-02-08 14:11:37,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:11:37,071 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:11:37,071 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:11:37,071 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:11:37,072 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:11:26" (3/4) ... [2025-02-08 14:11:37,073 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:11:37,074 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 14:11:37,074 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 14:11:37,080 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 87 nodes and edges [2025-02-08 14:11:37,081 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2025-02-08 14:11:37,081 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2025-02-08 14:11:37,081 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 14:11:37,166 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:11:37,166 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:11:37,166 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:11:37,167 INFO L158 Benchmark]: Toolchain (without parser) took 11512.58ms. Allocated memory was 201.3MB in the beginning and 578.8MB in the end (delta: 377.5MB). Free memory was 159.0MB in the beginning and 448.1MB in the end (delta: -289.1MB). Peak memory consumption was 85.5MB. Max. memory is 16.1GB. [2025-02-08 14:11:37,168 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 209.7MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:11:37,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.11ms. Allocated memory is still 201.3MB. Free memory was 159.0MB in the beginning and 146.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:11:37,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.78ms. Allocated memory is still 201.3MB. Free memory was 146.9MB in the beginning and 145.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:11:37,169 INFO L158 Benchmark]: Boogie Preprocessor took 40.36ms. Allocated memory is still 201.3MB. Free memory was 145.2MB in the beginning and 143.3MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:11:37,169 INFO L158 Benchmark]: IcfgBuilder took 616.87ms. Allocated memory is still 201.3MB. Free memory was 143.3MB in the beginning and 88.5MB in the end (delta: 54.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-02-08 14:11:37,170 INFO L158 Benchmark]: TraceAbstraction took 10550.52ms. Allocated memory was 201.3MB in the beginning and 578.8MB in the end (delta: 377.5MB). Free memory was 88.0MB in the beginning and 456.0MB in the end (delta: -368.0MB). Peak memory consumption was 135.8MB. Max. memory is 16.1GB. [2025-02-08 14:11:37,170 INFO L158 Benchmark]: Witness Printer took 95.06ms. Allocated memory is still 578.8MB. Free memory was 456.0MB in the beginning and 448.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:11:37,171 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 209.7MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.11ms. Allocated memory is still 201.3MB. Free memory was 159.0MB in the beginning and 146.9MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.78ms. Allocated memory is still 201.3MB. Free memory was 146.9MB in the beginning and 145.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.36ms. Allocated memory is still 201.3MB. Free memory was 145.2MB in the beginning and 143.3MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 616.87ms. Allocated memory is still 201.3MB. Free memory was 143.3MB in the beginning and 88.5MB in the end (delta: 54.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 10550.52ms. Allocated memory was 201.3MB in the beginning and 578.8MB in the end (delta: 377.5MB). Free memory was 88.0MB in the beginning and 456.0MB in the end (delta: -368.0MB). Peak memory consumption was 135.8MB. Max. memory is 16.1GB. * Witness Printer took 95.06ms. Allocated memory is still 578.8MB. Free memory was 456.0MB in the beginning and 448.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 98]: 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 5 procedures, 57 locations, 14 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: 10.5s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1066 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 981 mSDsluCounter, 221 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 195 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2479 IncrementalHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 26 mSDtfsCounter, 2479 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 661 GetRequests, 491 SyntacticMatches, 7 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=867occurred in iteration=15, InterpolantAutomatonStates: 133, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 658 NumberOfCodeBlocks, 522 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 876 ConstructedInterpolants, 0 QuantifiedInterpolants, 2382 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1708 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 1366/1907 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 14:11:37,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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