./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 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-more-max-array.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 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:54:46,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:54:46,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:54:46,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:54:46,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:54:46,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:54:46,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:54:46,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:54:46,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:54:46,594 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:54:46,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:54:46,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:54:46,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:54:46,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:54:46,596 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:54:46,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:54:46,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:54:46,596 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:54:46,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:54:46,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:54:46,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:54:46,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:54:46,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:54:46,597 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:54:46,597 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:54:46,597 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:54:46,597 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:54:46,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:54:46,598 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:54:46,598 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:54:46,598 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:54:46,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:54:46,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:54:46,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:54:46,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:54:46,599 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:54:46,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:54:46,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:54:46,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:54:46,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:54:46,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:54:46,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:54:46,599 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:54:46,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:54:46,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:54:46,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:54:46,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:54:46,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:54:46,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:54:46,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:54:46,600 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 -> 573af40880ce1d61666f10a2729c7d6ecdb02e81781df2543efcfdd5788ab6d6 [2025-01-10 06:54:46,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:54:46,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:54:46,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:54:46,904 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:54:46,904 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:54:46,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2025-01-10 06:54:48,282 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1ed9ee551/ef8c526dfcc442d687f8b94abb5f1911/FLAGfc25de4d4 [2025-01-10 06:54:48,569 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:54:48,574 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-max-array.wvr.c [2025-01-10 06:54:48,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1ed9ee551/ef8c526dfcc442d687f8b94abb5f1911/FLAGfc25de4d4 [2025-01-10 06:54:48,610 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1ed9ee551/ef8c526dfcc442d687f8b94abb5f1911 [2025-01-10 06:54:48,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:54:48,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:54:48,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:54:48,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:54:48,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:54:48,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e408ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48, skipping insertion in model container [2025-01-10 06:54:48,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,641 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:54:48,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:54:48,813 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:54:48,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:54:48,857 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:54:48,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48 WrapperNode [2025-01-10 06:54:48,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:54:48,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:54:48,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:54:48,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:54:48,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,894 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 87 [2025-01-10 06:54:48,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:54:48,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:54:48,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:54:48,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:54:48,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,927 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-10 06:54:48,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,933 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,938 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:54:48,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:54:48,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:54:48,944 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:54:48,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:54:48,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:48,975 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) [2025-01-10 06:54:48,977 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 [2025-01-10 06:54:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:54:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:54:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:54:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:54:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:54:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:54:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:54:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:54:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:54:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:54:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:54:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:54:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:54:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:54:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:54:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:54:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:54:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:54:49,002 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:54:49,091 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:54:49,092 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:54:49,338 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:54:49,338 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:54:49,511 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:54:49,511 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:54:49,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:54:49 BoogieIcfgContainer [2025-01-10 06:54:49,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:54:49,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:54:49,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:54:49,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:54:49,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:54:48" (1/3) ... [2025-01-10 06:54:49,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ae9956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:54:49, skipping insertion in model container [2025-01-10 06:54:49,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (2/3) ... [2025-01-10 06:54:49,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ae9956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:54:49, skipping insertion in model container [2025-01-10 06:54:49,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:54:49" (3/3) ... [2025-01-10 06:54:49,521 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2025-01-10 06:54:49,533 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:54:49,535 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-max-array.wvr.c that has 4 procedures, 44 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2025-01-10 06:54:49,535 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:54:49,592 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 06:54:49,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2025-01-10 06:54:49,663 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2025-01-10 06:54:49,667 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 06:54:49,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-01-10 06:54:49,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2025-01-10 06:54:49,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 42 transitions, 99 flow [2025-01-10 06:54:49,683 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:54:49,696 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;@6bf11b4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:54:49,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-01-10 06:54:49,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:54:49,701 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:54:49,701 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:54:49,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:49,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:54:49,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:49,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash 435503, now seen corresponding path program 1 times [2025-01-10 06:54:49,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:49,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768976202] [2025-01-10 06:54:49,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:49,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:49,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:54:49,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:54:49,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:49,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:49,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:49,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768976202] [2025-01-10 06:54:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768976202] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:49,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:49,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:54:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639214995] [2025-01-10 06:54:49,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:49,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:49,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:49,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:49,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:49,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-01-10 06:54:49,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2025-01-10 06:54:49,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:49,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-01-10 06:54:50,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:50,291 INFO L124 PetriNetUnfolderBase]: 431/733 cut-off events. [2025-01-10 06:54:50,292 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2025-01-10 06:54:50,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 733 events. 431/733 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3292 event pairs, 306 based on Foata normal form. 1/659 useless extension candidates. Maximal degree in co-relation 1265. Up to 625 conditions per place. [2025-01-10 06:54:50,303 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2025-01-10 06:54:50,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 163 flow [2025-01-10 06:54:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-01-10 06:54:50,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2025-01-10 06:54:50,318 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 99 flow. Second operand 4 states and 107 transitions. [2025-01-10 06:54:50,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 163 flow [2025-01-10 06:54:50,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-10 06:54:50,327 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-01-10 06:54:50,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2025-01-10 06:54:50,333 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2025-01-10 06:54:50,333 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-01-10 06:54:50,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2025-01-10 06:54:50,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:50,334 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:54:50,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:54:50,334 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:50,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash 89596761, now seen corresponding path program 1 times [2025-01-10 06:54:50,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:50,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596618252] [2025-01-10 06:54:50,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:50,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:50,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:54:50,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:54:50,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:50,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:50,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:50,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596618252] [2025-01-10 06:54:50,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596618252] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:50,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228337886] [2025-01-10 06:54:50,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:50,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:50,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:50,536 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) [2025-01-10 06:54:50,541 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 [2025-01-10 06:54:50,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:54:50,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:54:50,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:50,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:50,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:50,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:50,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:54:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228337886] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:50,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:54:50,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:54:50,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019117475] [2025-01-10 06:54:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:50,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:54:50,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:50,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:54:50,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:54:50,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-01-10 06:54:50,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-01-10 06:54:50,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:50,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-01-10 06:54:50,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:50,847 INFO L124 PetriNetUnfolderBase]: 431/732 cut-off events. [2025-01-10 06:54:50,847 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 06:54:50,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 732 events. 431/732 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3278 event pairs, 306 based on Foata normal form. 1/659 useless extension candidates. Maximal degree in co-relation 1383. Up to 620 conditions per place. [2025-01-10 06:54:50,853 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 21 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2025-01-10 06:54:50,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 171 flow [2025-01-10 06:54:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:54:50,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:54:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2025-01-10 06:54:50,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2025-01-10 06:54:50,856 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 6 states and 143 transitions. [2025-01-10 06:54:50,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 171 flow [2025-01-10 06:54:50,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:54:50,859 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 126 flow [2025-01-10 06:54:50,860 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2025-01-10 06:54:50,861 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2025-01-10 06:54:50,861 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 126 flow [2025-01-10 06:54:50,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2025-01-10 06:54:50,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:50,861 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:54:50,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:54:51,062 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 [2025-01-10 06:54:51,063 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:51,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1517467273, now seen corresponding path program 1 times [2025-01-10 06:54:51,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:51,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407287646] [2025-01-10 06:54:51,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:51,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:51,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:54:51,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:54:51,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:51,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:51,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:51,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:51,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407287646] [2025-01-10 06:54:51,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407287646] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:51,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332690150] [2025-01-10 06:54:51,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:51,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:51,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:51,197 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) [2025-01-10 06:54:51,222 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 [2025-01-10 06:54:51,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:54:51,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:54:51,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:51,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:51,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:51,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:51,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:51,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332690150] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:51,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:51,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:54:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969892193] [2025-01-10 06:54:51,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:51,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:54:51,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:51,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:54:51,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:54:51,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-01-10 06:54:51,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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) [2025-01-10 06:54:51,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:51,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-01-10 06:54:51,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:51,599 INFO L124 PetriNetUnfolderBase]: 434/744 cut-off events. [2025-01-10 06:54:51,599 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-01-10 06:54:51,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 744 events. 434/744 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3403 event pairs, 306 based on Foata normal form. 3/671 useless extension candidates. Maximal degree in co-relation 1384. Up to 627 conditions per place. [2025-01-10 06:54:51,607 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2025-01-10 06:54:51,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 254 flow [2025-01-10 06:54:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:54:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:54:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2025-01-10 06:54:51,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2025-01-10 06:54:51,610 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 126 flow. Second operand 10 states and 230 transitions. [2025-01-10 06:54:51,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 254 flow [2025-01-10 06:54:51,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-01-10 06:54:51,615 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 178 flow [2025-01-10 06:54:51,616 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2025-01-10 06:54:51,617 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2025-01-10 06:54:51,617 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 178 flow [2025-01-10 06:54:51,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 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) [2025-01-10 06:54:51,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:51,618 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:51,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 06:54:51,821 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 [2025-01-10 06:54:51,822 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:51,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:51,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1528323748, now seen corresponding path program 1 times [2025-01-10 06:54:51,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:51,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782194232] [2025-01-10 06:54:51,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:51,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:51,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:54:51,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:54:51,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:51,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:51,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:51,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782194232] [2025-01-10 06:54:51,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782194232] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:51,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:51,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:54:51,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493720458] [2025-01-10 06:54:51,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:51,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:51,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:51,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:51,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:51,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:51,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2025-01-10 06:54:51,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:51,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:51,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:52,206 INFO L124 PetriNetUnfolderBase]: 1064/1805 cut-off events. [2025-01-10 06:54:52,207 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2025-01-10 06:54:52,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 1805 events. 1064/1805 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9679 event pairs, 449 based on Foata normal form. 42/1735 useless extension candidates. Maximal degree in co-relation 3417. Up to 1096 conditions per place. [2025-01-10 06:54:52,221 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 65 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2025-01-10 06:54:52,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 382 flow [2025-01-10 06:54:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2025-01-10 06:54:52,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6968085106382979 [2025-01-10 06:54:52,225 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 178 flow. Second operand 4 states and 131 transitions. [2025-01-10 06:54:52,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 382 flow [2025-01-10 06:54:52,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 371 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-01-10 06:54:52,229 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 196 flow [2025-01-10 06:54:52,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2025-01-10 06:54:52,232 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-01-10 06:54:52,232 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 196 flow [2025-01-10 06:54:52,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2025-01-10 06:54:52,232 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:52,232 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:52,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:54:52,233 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:52,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:52,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1915379883, now seen corresponding path program 1 times [2025-01-10 06:54:52,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:52,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902797079] [2025-01-10 06:54:52,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:52,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:54:52,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:54:52,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:52,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:52,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:52,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902797079] [2025-01-10 06:54:52,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902797079] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:52,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:52,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:54:52,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800161244] [2025-01-10 06:54:52,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:52,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:52,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:52,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:52,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:52,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-01-10 06:54:52,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:52,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:52,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:52,684 INFO L124 PetriNetUnfolderBase]: 1708/2740 cut-off events. [2025-01-10 06:54:52,685 INFO L125 PetriNetUnfolderBase]: For 760/1048 co-relation queries the response was YES. [2025-01-10 06:54:52,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 2740 events. 1708/2740 cut-off events. For 760/1048 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14861 event pairs, 787 based on Foata normal form. 161/2755 useless extension candidates. Maximal degree in co-relation 5968. Up to 1698 conditions per place. [2025-01-10 06:54:52,706 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 69 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2025-01-10 06:54:52,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 438 flow [2025-01-10 06:54:52,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2025-01-10 06:54:52,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6861702127659575 [2025-01-10 06:54:52,709 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 196 flow. Second operand 4 states and 129 transitions. [2025-01-10 06:54:52,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 438 flow [2025-01-10 06:54:52,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:54:52,715 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 222 flow [2025-01-10 06:54:52,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2025-01-10 06:54:52,716 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2025-01-10 06:54:52,716 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 222 flow [2025-01-10 06:54:52,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-01-10 06:54:52,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:52,717 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:52,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:54:52,717 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:52,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1335674501, now seen corresponding path program 1 times [2025-01-10 06:54:52,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:52,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554779145] [2025-01-10 06:54:52,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:52,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:52,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:54:52,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:54:52,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:52,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:52,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:52,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:52,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554779145] [2025-01-10 06:54:52,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554779145] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:52,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:52,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:54:52,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738131843] [2025-01-10 06:54:52,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:52,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:54:52,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:52,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:54:52,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:54:52,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2025-01-10 06:54:52,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:52,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:52,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2025-01-10 06:54:52,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:53,017 INFO L124 PetriNetUnfolderBase]: 1059/1768 cut-off events. [2025-01-10 06:54:53,018 INFO L125 PetriNetUnfolderBase]: For 761/1018 co-relation queries the response was YES. [2025-01-10 06:54:53,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4184 conditions, 1768 events. 1059/1768 cut-off events. For 761/1018 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9364 event pairs, 724 based on Foata normal form. 92/1689 useless extension candidates. Maximal degree in co-relation 4153. Up to 1469 conditions per place. [2025-01-10 06:54:53,034 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2025-01-10 06:54:53,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 297 flow [2025-01-10 06:54:53,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:54:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:54:53,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-01-10 06:54:53,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2025-01-10 06:54:53,036 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 222 flow. Second operand 3 states and 90 transitions. [2025-01-10 06:54:53,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 297 flow [2025-01-10 06:54:53,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:54:53,041 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 220 flow [2025-01-10 06:54:53,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2025-01-10 06:54:53,042 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2025-01-10 06:54:53,043 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 220 flow [2025-01-10 06:54:53,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:53,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:53,044 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:53,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:54:53,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:53,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash -556987759, now seen corresponding path program 1 times [2025-01-10 06:54:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:53,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391002760] [2025-01-10 06:54:53,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:53,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:53,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:54:53,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:54:53,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:53,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:54:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391002760] [2025-01-10 06:54:53,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391002760] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:53,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:53,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:54:53,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387312840] [2025-01-10 06:54:53,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:53,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:54:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:53,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:54:53,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:54:53,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:53,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2025-01-10 06:54:53,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:53,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:53,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:53,466 INFO L124 PetriNetUnfolderBase]: 1495/2340 cut-off events. [2025-01-10 06:54:53,467 INFO L125 PetriNetUnfolderBase]: For 912/1319 co-relation queries the response was YES. [2025-01-10 06:54:53,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 2340 events. 1495/2340 cut-off events. For 912/1319 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12136 event pairs, 388 based on Foata normal form. 220/2436 useless extension candidates. Maximal degree in co-relation 5450. Up to 786 conditions per place. [2025-01-10 06:54:53,489 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 63 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2025-01-10 06:54:53,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 464 flow [2025-01-10 06:54:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:54:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:54:53,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-01-10 06:54:53,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2025-01-10 06:54:53,491 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 220 flow. Second operand 5 states and 139 transitions. [2025-01-10 06:54:53,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 464 flow [2025-01-10 06:54:53,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:54:53,495 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 230 flow [2025-01-10 06:54:53,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2025-01-10 06:54:53,497 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2025-01-10 06:54:53,497 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 230 flow [2025-01-10 06:54:53,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 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) [2025-01-10 06:54:53,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:53,497 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-01-10 06:54:53,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:54:53,498 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:53,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1397101281, now seen corresponding path program 2 times [2025-01-10 06:54:53,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:53,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330658166] [2025-01-10 06:54:53,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:54:53,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:53,509 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:54:53,512 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:54:53,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:54:53,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:54:53,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:53,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330658166] [2025-01-10 06:54:53,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330658166] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:53,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539106779] [2025-01-10 06:54:53,560 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:54:53,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:53,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:53,562 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) [2025-01-10 06:54:53,565 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 [2025-01-10 06:54:53,618 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:54:53,628 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:54:53,628 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:54:53,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:53,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:54:53,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:54:53,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:53,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:54:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539106779] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:53,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-01-10 06:54:53,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507505910] [2025-01-10 06:54:53,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:53,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:53,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:53,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:53,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:53,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-01-10 06:54:53,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-01-10 06:54:53,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:53,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-01-10 06:54:53,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:53,911 INFO L124 PetriNetUnfolderBase]: 1059/1731 cut-off events. [2025-01-10 06:54:53,912 INFO L125 PetriNetUnfolderBase]: For 813/1070 co-relation queries the response was YES. [2025-01-10 06:54:53,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 1731 events. 1059/1731 cut-off events. For 813/1070 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8937 event pairs, 724 based on Foata normal form. 92/1689 useless extension candidates. Maximal degree in co-relation 4266. Up to 1460 conditions per place. [2025-01-10 06:54:53,924 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2025-01-10 06:54:53,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 298 flow [2025-01-10 06:54:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-01-10 06:54:53,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2025-01-10 06:54:53,927 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 230 flow. Second operand 4 states and 101 transitions. [2025-01-10 06:54:53,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 298 flow [2025-01-10 06:54:53,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 272 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-01-10 06:54:53,933 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 224 flow [2025-01-10 06:54:53,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2025-01-10 06:54:53,935 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-01-10 06:54:53,935 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 224 flow [2025-01-10 06:54:53,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-01-10 06:54:53,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:53,935 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:53,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 06:54:54,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:54,140 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:54,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash -86750871, now seen corresponding path program 1 times [2025-01-10 06:54:54,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:54,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585464445] [2025-01-10 06:54:54,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:54,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:54:54,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:54:54,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:54,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:54,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585464445] [2025-01-10 06:54:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585464445] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267897295] [2025-01-10 06:54:54,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:54,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:54,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:54,281 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) [2025-01-10 06:54:54,283 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 [2025-01-10 06:54:54,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:54:54,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:54:54,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:54,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:54,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:54,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:54:54,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:54:54,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267897295] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:54,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:54:54,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2025-01-10 06:54:54,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742094712] [2025-01-10 06:54:54,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:54,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:54:54,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:54,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:54:54,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:54:54,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-01-10 06:54:54,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:54,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:54,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-01-10 06:54:54,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:54,778 INFO L124 PetriNetUnfolderBase]: 1792/2636 cut-off events. [2025-01-10 06:54:54,779 INFO L125 PetriNetUnfolderBase]: For 1040/1516 co-relation queries the response was YES. [2025-01-10 06:54:54,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 2636 events. 1792/2636 cut-off events. For 1040/1516 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12831 event pairs, 556 based on Foata normal form. 166/2596 useless extension candidates. Maximal degree in co-relation 6195. Up to 1162 conditions per place. [2025-01-10 06:54:54,792 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 10 changer transitions 3/87 dead transitions. [2025-01-10 06:54:54,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 476 flow [2025-01-10 06:54:54,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:54:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:54:54,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2025-01-10 06:54:54,795 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2025-01-10 06:54:54,795 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 224 flow. Second operand 6 states and 153 transitions. [2025-01-10 06:54:54,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 476 flow [2025-01-10 06:54:54,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:54:54,800 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 229 flow [2025-01-10 06:54:54,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2025-01-10 06:54:54,800 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2025-01-10 06:54:54,801 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 229 flow [2025-01-10 06:54:54,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:54,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:54,801 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:54,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 06:54:55,001 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,SelfDestructingSolverStorable8 [2025-01-10 06:54:55,002 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:55,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1701836730, now seen corresponding path program 1 times [2025-01-10 06:54:55,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:55,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170903774] [2025-01-10 06:54:55,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:55,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:55,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:54:55,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:54:55,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:55,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:54:55,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170903774] [2025-01-10 06:54:55,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170903774] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766262614] [2025-01-10 06:54:55,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:55,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:55,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:55,087 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) [2025-01-10 06:54:55,089 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 [2025-01-10 06:54:55,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:54:55,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:54:55,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:55,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:55,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:54:55,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:55,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:55,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766262614] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:55,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:55,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-01-10 06:54:55,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030813780] [2025-01-10 06:54:55,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:55,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 06:54:55,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:55,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 06:54:55,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-01-10 06:54:55,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2025-01-10 06:54:55,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 229 flow. Second operand has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 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) [2025-01-10 06:54:55,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:55,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2025-01-10 06:54:55,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:56,573 INFO L124 PetriNetUnfolderBase]: 3676/5701 cut-off events. [2025-01-10 06:54:56,573 INFO L125 PetriNetUnfolderBase]: For 3910/4579 co-relation queries the response was YES. [2025-01-10 06:54:56,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15035 conditions, 5701 events. 3676/5701 cut-off events. For 3910/4579 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 33424 event pairs, 618 based on Foata normal form. 329/5865 useless extension candidates. Maximal degree in co-relation 8810. Up to 860 conditions per place. [2025-01-10 06:54:56,614 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 153 selfloop transitions, 23 changer transitions 6/194 dead transitions. [2025-01-10 06:54:56,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 194 transitions, 1089 flow [2025-01-10 06:54:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 06:54:56,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-10 06:54:56,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 361 transitions. [2025-01-10 06:54:56,616 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5486322188449848 [2025-01-10 06:54:56,616 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 229 flow. Second operand 14 states and 361 transitions. [2025-01-10 06:54:56,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 194 transitions, 1089 flow [2025-01-10 06:54:56,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 194 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:54:56,631 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 289 flow [2025-01-10 06:54:56,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=289, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2025-01-10 06:54:56,633 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2025-01-10 06:54:56,633 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 289 flow [2025-01-10 06:54:56,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 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) [2025-01-10 06:54:56,634 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:56,634 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:56,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 06:54:56,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 06:54:56,838 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:56,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:56,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1819230956, now seen corresponding path program 1 times [2025-01-10 06:54:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:56,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924341813] [2025-01-10 06:54:56,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:56,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:56,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:54:56,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:54:56,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:56,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:54:56,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:56,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924341813] [2025-01-10 06:54:56,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924341813] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:56,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318959748] [2025-01-10 06:54:56,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:56,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:56,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:56,962 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) [2025-01-10 06:54:56,965 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 [2025-01-10 06:54:57,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:54:57,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:54:57,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:57,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:57,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 06:54:57,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:54:57,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:54:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318959748] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:57,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2025-01-10 06:54:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258967537] [2025-01-10 06:54:57,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:57,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 06:54:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:57,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 06:54:57,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-01-10 06:54:57,273 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:57,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 289 flow. Second operand has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 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) [2025-01-10 06:54:57,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:57,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:57,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:57,721 INFO L124 PetriNetUnfolderBase]: 2352/3845 cut-off events. [2025-01-10 06:54:57,722 INFO L125 PetriNetUnfolderBase]: For 3806/4013 co-relation queries the response was YES. [2025-01-10 06:54:57,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10722 conditions, 3845 events. 2352/3845 cut-off events. For 3806/4013 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22018 event pairs, 1665 based on Foata normal form. 70/3774 useless extension candidates. Maximal degree in co-relation 8538. Up to 2667 conditions per place. [2025-01-10 06:54:57,743 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 29 selfloop transitions, 10 changer transitions 35/89 dead transitions. [2025-01-10 06:54:57,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 547 flow [2025-01-10 06:54:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:54:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:54:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2025-01-10 06:54:57,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2025-01-10 06:54:57,745 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 289 flow. Second operand 8 states and 203 transitions. [2025-01-10 06:54:57,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 547 flow [2025-01-10 06:54:57,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 503 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-01-10 06:54:57,754 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 247 flow [2025-01-10 06:54:57,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=247, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2025-01-10 06:54:57,754 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2025-01-10 06:54:57,754 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 247 flow [2025-01-10 06:54:57,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 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) [2025-01-10 06:54:57,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:57,755 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:57,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 06:54:57,958 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,SelfDestructingSolverStorable10 [2025-01-10 06:54:57,959 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:57,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2116709880, now seen corresponding path program 1 times [2025-01-10 06:54:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:57,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002033377] [2025-01-10 06:54:57,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:57,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:57,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:54:57,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:54:57,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:57,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:54:58,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:58,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002033377] [2025-01-10 06:54:58,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002033377] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:58,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839937225] [2025-01-10 06:54:58,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:58,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:58,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:58,052 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) [2025-01-10 06:54:58,067 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 [2025-01-10 06:54:58,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:54:58,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:54:58,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:58,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:58,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:58,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:54:58,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:54:58,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839937225] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:58,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:58,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:54:58,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906705571] [2025-01-10 06:54:58,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:58,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:54:58,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:58,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:54:58,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:54:58,216 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:58,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 247 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 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) [2025-01-10 06:54:58,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:58,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:58,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:58,936 INFO L124 PetriNetUnfolderBase]: 4139/6551 cut-off events. [2025-01-10 06:54:58,936 INFO L125 PetriNetUnfolderBase]: For 5964/7101 co-relation queries the response was YES. [2025-01-10 06:54:58,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17785 conditions, 6551 events. 4139/6551 cut-off events. For 5964/7101 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 36867 event pairs, 847 based on Foata normal form. 553/7048 useless extension candidates. Maximal degree in co-relation 17710. Up to 2303 conditions per place. [2025-01-10 06:54:58,979 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 169 selfloop transitions, 13 changer transitions 0/195 dead transitions. [2025-01-10 06:54:58,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 195 transitions, 1149 flow [2025-01-10 06:54:58,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:54:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:54:58,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2025-01-10 06:54:58,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6978723404255319 [2025-01-10 06:54:58,984 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 247 flow. Second operand 10 states and 328 transitions. [2025-01-10 06:54:58,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 195 transitions, 1149 flow [2025-01-10 06:54:58,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 195 transitions, 1089 flow, removed 20 selfloop flow, removed 8 redundant places. [2025-01-10 06:54:59,002 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 305 flow [2025-01-10 06:54:59,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=305, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2025-01-10 06:54:59,003 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2025-01-10 06:54:59,003 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 305 flow [2025-01-10 06:54:59,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 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) [2025-01-10 06:54:59,004 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:59,004 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:59,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 06:54:59,204 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 [2025-01-10 06:54:59,204 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:59,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash 291693994, now seen corresponding path program 2 times [2025-01-10 06:54:59,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:59,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677883844] [2025-01-10 06:54:59,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:54:59,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:59,211 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 06:54:59,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:54:59,220 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:54:59,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:54:59,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677883844] [2025-01-10 06:54:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677883844] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:59,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:59,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:54:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485117246] [2025-01-10 06:54:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:59,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:54:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:59,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:54:59,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:54:59,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-01-10 06:54:59,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2025-01-10 06:54:59,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:59,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-01-10 06:54:59,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:59,921 INFO L124 PetriNetUnfolderBase]: 4989/7277 cut-off events. [2025-01-10 06:54:59,922 INFO L125 PetriNetUnfolderBase]: For 9293/9930 co-relation queries the response was YES. [2025-01-10 06:54:59,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21913 conditions, 7277 events. 4989/7277 cut-off events. For 9293/9930 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39672 event pairs, 573 based on Foata normal form. 166/7195 useless extension candidates. Maximal degree in co-relation 21844. Up to 2995 conditions per place. [2025-01-10 06:54:59,967 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 83 selfloop transitions, 7 changer transitions 0/104 dead transitions. [2025-01-10 06:54:59,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 104 transitions, 707 flow [2025-01-10 06:54:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-01-10 06:54:59,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2025-01-10 06:54:59,969 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 305 flow. Second operand 4 states and 119 transitions. [2025-01-10 06:54:59,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 104 transitions, 707 flow [2025-01-10 06:54:59,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 678 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-01-10 06:54:59,985 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 304 flow [2025-01-10 06:54:59,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2025-01-10 06:54:59,985 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2025-01-10 06:54:59,985 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 304 flow [2025-01-10 06:54:59,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2025-01-10 06:54:59,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:59,985 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:59,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-10 06:54:59,986 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:59,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:59,986 INFO L85 PathProgramCache]: Analyzing trace with hash 452579687, now seen corresponding path program 1 times [2025-01-10 06:54:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:59,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840474840] [2025-01-10 06:54:59,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:59,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:59,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:55:00,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:55:00,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:00,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:55:00,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:00,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840474840] [2025-01-10 06:55:00,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840474840] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:00,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277465802] [2025-01-10 06:55:00,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:55:00,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:00,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:00,068 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) [2025-01-10 06:55:00,070 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 [2025-01-10 06:55:00,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:55:00,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:55:00,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:55:00,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:00,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 06:55:00,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:00,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:55:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277465802] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:00,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:00,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2025-01-10 06:55:00,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946162431] [2025-01-10 06:55:00,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:00,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 06:55:00,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:00,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 06:55:00,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2025-01-10 06:55:00,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2025-01-10 06:55:00,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 304 flow. Second operand has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 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) [2025-01-10 06:55:00,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:00,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2025-01-10 06:55:00,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:02,277 INFO L124 PetriNetUnfolderBase]: 10729/15956 cut-off events. [2025-01-10 06:55:02,277 INFO L125 PetriNetUnfolderBase]: For 20605/22187 co-relation queries the response was YES. [2025-01-10 06:55:02,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48590 conditions, 15956 events. 10729/15956 cut-off events. For 20605/22187 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 98711 event pairs, 2903 based on Foata normal form. 552/16416 useless extension candidates. Maximal degree in co-relation 39450. Up to 4354 conditions per place. [2025-01-10 06:55:02,370 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 222 selfloop transitions, 23 changer transitions 9/268 dead transitions. [2025-01-10 06:55:02,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 268 transitions, 1818 flow [2025-01-10 06:55:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 06:55:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 06:55:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 418 transitions. [2025-01-10 06:55:02,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.523153942428035 [2025-01-10 06:55:02,373 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 304 flow. Second operand 17 states and 418 transitions. [2025-01-10 06:55:02,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 268 transitions, 1818 flow [2025-01-10 06:55:02,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 268 transitions, 1788 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:55:02,431 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 387 flow [2025-01-10 06:55:02,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=387, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2025-01-10 06:55:02,432 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places. [2025-01-10 06:55:02,432 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 387 flow [2025-01-10 06:55:02,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 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) [2025-01-10 06:55:02,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:02,433 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:02,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 06:55:02,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:02,634 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:55:02,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash -764069104, now seen corresponding path program 2 times [2025-01-10 06:55:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825176853] [2025-01-10 06:55:02,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:02,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:02,739 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 06:55:02,748 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 06:55:02,749 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:02,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-10 06:55:02,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:02,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825176853] [2025-01-10 06:55:02,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825176853] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:02,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098408797] [2025-01-10 06:55:02,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:02,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:02,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:02,836 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) [2025-01-10 06:55:02,838 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 [2025-01-10 06:55:02,892 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 06:55:02,911 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 06:55:02,912 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:02,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:02,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:55:02,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-10 06:55:02,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-10 06:55:03,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098408797] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:03,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:03,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2025-01-10 06:55:03,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041825536] [2025-01-10 06:55:03,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:03,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 06:55:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:03,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 06:55:03,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-10 06:55:03,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-01-10 06:55:03,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 387 flow. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 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) [2025-01-10 06:55:03,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:03,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-01-10 06:55:03,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:04,005 INFO L124 PetriNetUnfolderBase]: 10328/15385 cut-off events. [2025-01-10 06:55:04,006 INFO L125 PetriNetUnfolderBase]: For 20696/22247 co-relation queries the response was YES. [2025-01-10 06:55:04,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48114 conditions, 15385 events. 10328/15385 cut-off events. For 20696/22247 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 94692 event pairs, 1783 based on Foata normal form. 253/15523 useless extension candidates. Maximal degree in co-relation 39127. Up to 6270 conditions per place. [2025-01-10 06:55:04,090 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 96 selfloop transitions, 20 changer transitions 3/133 dead transitions. [2025-01-10 06:55:04,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 935 flow [2025-01-10 06:55:04,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:55:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:55:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2025-01-10 06:55:04,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2025-01-10 06:55:04,091 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 387 flow. Second operand 7 states and 183 transitions. [2025-01-10 06:55:04,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 935 flow [2025-01-10 06:55:04,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 900 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-01-10 06:55:04,155 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 400 flow [2025-01-10 06:55:04,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2025-01-10 06:55:04,156 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2025-01-10 06:55:04,156 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 400 flow [2025-01-10 06:55:04,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 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) [2025-01-10 06:55:04,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:04,157 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 06:55:04,165 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 [2025-01-10 06:55:04,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:04,357 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:55:04,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1335481004, now seen corresponding path program 2 times [2025-01-10 06:55:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:04,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413893113] [2025-01-10 06:55:04,358 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:04,369 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-01-10 06:55:04,376 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 06:55:04,376 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:04,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-10 06:55:04,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413893113] [2025-01-10 06:55:04,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413893113] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:04,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301146176] [2025-01-10 06:55:04,472 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:04,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:04,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:04,475 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) [2025-01-10 06:55:04,477 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 [2025-01-10 06:55:04,531 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-01-10 06:55:04,557 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 06:55:04,557 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:04,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:04,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:55:04,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:04,672 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-10 06:55:04,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-10 06:55:04,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301146176] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:04,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:04,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-01-10 06:55:04,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348722317] [2025-01-10 06:55:04,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:04,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:55:04,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:04,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:55:04,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:55:04,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-01-10 06:55:04,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2025-01-10 06:55:04,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:04,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-01-10 06:55:04,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:06,116 INFO L124 PetriNetUnfolderBase]: 11132/17558 cut-off events. [2025-01-10 06:55:06,116 INFO L125 PetriNetUnfolderBase]: For 33220/34653 co-relation queries the response was YES. [2025-01-10 06:55:06,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55706 conditions, 17558 events. 11132/17558 cut-off events. For 33220/34653 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 114016 event pairs, 2816 based on Foata normal form. 974/18402 useless extension candidates. Maximal degree in co-relation 42951. Up to 6832 conditions per place. [2025-01-10 06:55:06,174 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2025-01-10 06:55:06,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 844 flow [2025-01-10 06:55:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:55:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:55:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-01-10 06:55:06,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2025-01-10 06:55:06,177 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 400 flow. Second operand 5 states and 139 transitions. [2025-01-10 06:55:06,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 844 flow [2025-01-10 06:55:06,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 764 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-01-10 06:55:06,248 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2025-01-10 06:55:06,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2025-01-10 06:55:06,249 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2025-01-10 06:55:06,249 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2025-01-10 06:55:06,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2025-01-10 06:55:06,252 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-01-10 06:55:06,253 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-01-10 06:55:06,253 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-01-10 06:55:06,253 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-01-10 06:55:06,253 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-01-10 06:55:06,253 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-01-10 06:55:06,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 06:55:06,453 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,SelfDestructingSolverStorable15 [2025-01-10 06:55:06,454 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:06,457 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 06:55:06,457 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 06:55:06,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:55:06 BasicIcfg [2025-01-10 06:55:06,462 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 06:55:06,462 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 06:55:06,462 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 06:55:06,462 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 06:55:06,463 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:54:49" (3/4) ... [2025-01-10 06:55:06,464 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-10 06:55:06,467 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-01-10 06:55:06,467 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-01-10 06:55:06,467 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-01-10 06:55:06,471 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2025-01-10 06:55:06,472 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-01-10 06:55:06,473 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-01-10 06:55:06,473 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-01-10 06:55:06,539 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-10 06:55:06,540 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-10 06:55:06,540 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 06:55:06,541 INFO L158 Benchmark]: Toolchain (without parser) took 17925.05ms. Allocated memory was 167.8MB in the beginning and 897.6MB in the end (delta: 729.8MB). Free memory was 122.7MB in the beginning and 383.0MB in the end (delta: -260.3MB). Peak memory consumption was 467.9MB. Max. memory is 16.1GB. [2025-01-10 06:55:06,541 INFO L158 Benchmark]: CDTParser took 1.10ms. Allocated memory is still 201.3MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:55:06,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.32ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 110.6MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:55:06,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.61ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 109.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:55:06,543 INFO L158 Benchmark]: Boogie Preprocessor took 47.32ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.7MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:55:06,543 INFO L158 Benchmark]: RCFGBuilder took 567.57ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 70.9MB in the end (delta: 36.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-01-10 06:55:06,543 INFO L158 Benchmark]: TraceAbstraction took 16948.36ms. Allocated memory was 167.8MB in the beginning and 897.6MB in the end (delta: 729.8MB). Free memory was 70.5MB in the beginning and 389.5MB in the end (delta: -319.0MB). Peak memory consumption was 787.4MB. Max. memory is 16.1GB. [2025-01-10 06:55:06,544 INFO L158 Benchmark]: Witness Printer took 77.64ms. Allocated memory is still 897.6MB. Free memory was 389.5MB in the beginning and 383.0MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:55:06,545 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10ms. Allocated memory is still 201.3MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.32ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 110.6MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.61ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 109.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.32ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.7MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 567.57ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 70.9MB in the end (delta: 36.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16948.36ms. Allocated memory was 167.8MB in the beginning and 897.6MB in the end (delta: 729.8MB). Free memory was 70.5MB in the beginning and 389.5MB in the end (delta: -319.0MB). Peak memory consumption was 787.4MB. Max. memory is 16.1GB. * Witness Printer took 77.64ms. Allocated memory is still 897.6MB. Free memory was 389.5MB in the beginning and 383.0MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 74 locations, 17 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: 16.8s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1431 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1345 mSDsluCounter, 885 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 858 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4779 IncrementalHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 27 mSDtfsCounter, 4779 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 276 SyntacticMatches, 7 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=15, InterpolantAutomatonStates: 111, 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: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 441 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 571 ConstructedInterpolants, 0 QuantifiedInterpolants, 1799 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1116 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 34 InterpolantComputations, 8 PerfectInterpolantSequences, 346/493 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! [2025-01-10 06:55:06,560 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