./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.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-bad-buffer-mult-alt2.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 a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:52:25,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:52:25,487 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:52:25,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:52:25,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:52:25,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:52:25,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:52:25,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:52:25,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:52:25,507 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:52:25,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:52:25,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:52:25,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:52:25,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:52:25,507 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:52:25,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:52:25,508 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:52:25,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:52:25,509 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:52:25,509 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:52:25,509 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:52:25,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:25,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:25,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:25,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:25,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:52:25,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:25,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:25,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:52:25,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:52:25,511 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 -> a79fe9fcfc95192d454ac05616e4d9a71dbf2bcc8b4fd9d21dcef47910a50542 [2025-01-10 06:52:25,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:52:25,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:52:25,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:52:25,729 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:52:25,729 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:52:25,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-01-10 06:52:26,874 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6561481b9/b4351246dfde49eb8b76ebedd9b0d3a9/FLAG433dc28be [2025-01-10 06:52:27,159 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:52:27,160 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2025-01-10 06:52:27,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6561481b9/b4351246dfde49eb8b76ebedd9b0d3a9/FLAG433dc28be [2025-01-10 06:52:27,486 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6561481b9/b4351246dfde49eb8b76ebedd9b0d3a9 [2025-01-10 06:52:27,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:52:27,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:52:27,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:27,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:52:27,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:52:27,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4379290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27, skipping insertion in model container [2025-01-10 06:52:27,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:52:27,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:27,634 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:52:27,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:27,664 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:52:27,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27 WrapperNode [2025-01-10 06:52:27,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:27,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:27,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:52:27,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:52:27,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,692 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 337 [2025-01-10 06:52:27,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:27,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:52:27,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:52:27,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:52:27,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,702 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,716 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-01-10 06:52:27,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,723 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:52:27,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:52:27,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:52:27,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:52:27,731 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (1/1) ... [2025-01-10 06:52:27,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:27,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:27,754 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 06:52:27,761 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 06:52:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:52:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:52:27,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:52:27,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:52:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:52:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-10 06:52:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:52:27,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:52:27,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:52:27,775 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 06:52:27,878 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:52:27,879 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:52:28,308 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:52:28,308 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:52:28,765 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:52:28,766 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:52:28,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:28 BoogieIcfgContainer [2025-01-10 06:52:28,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:52:28,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:52:28,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:52:28,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:52:28,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:52:27" (1/3) ... [2025-01-10 06:52:28,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56177c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:28, skipping insertion in model container [2025-01-10 06:52:28,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:27" (2/3) ... [2025-01-10 06:52:28,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56177c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:52:28, skipping insertion in model container [2025-01-10 06:52:28,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:28" (3/3) ... [2025-01-10 06:52:28,773 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2025-01-10 06:52:28,783 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:52:28,784 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt2.wvr.c that has 5 procedures, 75 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-01-10 06:52:28,784 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:52:28,886 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-10 06:52:28,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 188 flow [2025-01-10 06:52:28,962 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2025-01-10 06:52:28,964 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-10 06:52:28,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 76 events. 6/76 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 259 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2025-01-10 06:52:28,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 80 transitions, 188 flow [2025-01-10 06:52:28,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 74 transitions, 169 flow [2025-01-10 06:52:28,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:52:28,988 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;@3b590aef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:52:28,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-01-10 06:52:28,992 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:52:28,992 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:52:28,992 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:52:28,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:28,993 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:52:28,993 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:52:28,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:28,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1047994, now seen corresponding path program 1 times [2025-01-10 06:52:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:29,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533434327] [2025-01-10 06:52:29,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:29,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:29,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:52:29,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:52:29,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:29,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:29,184 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 06:52:29,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533434327] [2025-01-10 06:52:29,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533434327] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:29,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:29,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:52:29,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775015878] [2025-01-10 06:52:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:29,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:52:29,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:29,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:52:29,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:52:29,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2025-01-10 06:52:29,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 06:52:29,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:29,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2025-01-10 06:52:29,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:33,158 INFO L124 PetriNetUnfolderBase]: 22241/31179 cut-off events. [2025-01-10 06:52:33,158 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2025-01-10 06:52:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62066 conditions, 31179 events. 22241/31179 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 4435. Compared 252596 event pairs, 21798 based on Foata normal form. 2/12985 useless extension candidates. Maximal degree in co-relation 57340. Up to 29415 conditions per place. [2025-01-10 06:52:33,419 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 47 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2025-01-10 06:52:33,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 273 flow [2025-01-10 06:52:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:52:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:52:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2025-01-10 06:52:33,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48125 [2025-01-10 06:52:33,429 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 169 flow. Second operand 4 states and 154 transitions. [2025-01-10 06:52:33,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 273 flow [2025-01-10 06:52:33,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 260 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-01-10 06:52:33,547 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 200 flow [2025-01-10 06:52:33,550 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2025-01-10 06:52:33,553 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2025-01-10 06:52:33,553 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 200 flow [2025-01-10 06:52:33,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 06:52:33,554 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:33,554 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:52:33,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:52:33,554 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:52:33,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1157089240, now seen corresponding path program 1 times [2025-01-10 06:52:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:33,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629762963] [2025-01-10 06:52:33,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:33,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:33,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:52:33,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:52:33,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:33,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:33,673 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 06:52:33,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629762963] [2025-01-10 06:52:33,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629762963] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:52:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76690739] [2025-01-10 06:52:33,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:33,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:33,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:33,684 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 06:52:33,685 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 06:52:33,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:52:33,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:52:33,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:33,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:33,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:52:33,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:52:33,808 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 06:52:33,809 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:52:33,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76690739] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:33,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:52:33,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:52:33,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643727403] [2025-01-10 06:52:33,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:33,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:52:33,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:33,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:52:33,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:52:33,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2025-01-10 06:52:33,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 06:52:33,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:33,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2025-01-10 06:52:33,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:36,649 INFO L124 PetriNetUnfolderBase]: 22241/31177 cut-off events. [2025-01-10 06:52:36,650 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-01-10 06:52:36,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61444 conditions, 31177 events. 22241/31177 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4435. Compared 252792 event pairs, 21798 based on Foata normal form. 2/12986 useless extension candidates. Maximal degree in co-relation 61394. Up to 29405 conditions per place. [2025-01-10 06:52:36,833 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 40 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2025-01-10 06:52:36,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 296 flow [2025-01-10 06:52:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:52:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:52:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2025-01-10 06:52:36,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3875 [2025-01-10 06:52:36,837 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 200 flow. Second operand 6 states and 186 transitions. [2025-01-10 06:52:36,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 296 flow [2025-01-10 06:52:36,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:52:36,839 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 216 flow [2025-01-10 06:52:36,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2025-01-10 06:52:36,840 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2025-01-10 06:52:36,840 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 216 flow [2025-01-10 06:52:36,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 06:52:36,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:36,840 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:52:36,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 06:52:37,045 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 06:52:37,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:52:37,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:37,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1510029151, now seen corresponding path program 1 times [2025-01-10 06:52:37,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:37,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468192695] [2025-01-10 06:52:37,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:37,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:37,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:52:37,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:52:37,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:37,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:37,203 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 06:52:37,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:37,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468192695] [2025-01-10 06:52:37,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468192695] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:52:37,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439985008] [2025-01-10 06:52:37,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:37,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:37,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:37,208 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 06:52:37,209 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 06:52:37,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:52:37,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:52:37,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:37,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:37,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:52:37,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:52:37,349 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 06:52:37,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:52:37,389 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 06:52:37,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439985008] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:52:37,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:52:37,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:52:37,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496218709] [2025-01-10 06:52:37,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:52:37,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:52:37,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:37,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:52:37,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:52:37,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 80 [2025-01-10 06:52:37,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 216 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 06:52:37,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:37,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 80 [2025-01-10 06:52:37,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:40,440 INFO L124 PetriNetUnfolderBase]: 22247/31201 cut-off events. [2025-01-10 06:52:40,441 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2025-01-10 06:52:40,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61538 conditions, 31201 events. 22247/31201 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 4435. Compared 253109 event pairs, 21798 based on Foata normal form. 6/13013 useless extension candidates. Maximal degree in co-relation 61396. Up to 29416 conditions per place. [2025-01-10 06:52:40,674 INFO L140 encePairwiseOnDemand]: 71/80 looper letters, 45 selfloop transitions, 25 changer transitions 0/88 dead transitions. [2025-01-10 06:52:40,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 470 flow [2025-01-10 06:52:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:52:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:52:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2025-01-10 06:52:40,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37 [2025-01-10 06:52:40,676 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 216 flow. Second operand 10 states and 296 transitions. [2025-01-10 06:52:40,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 470 flow [2025-01-10 06:52:40,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 412 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-01-10 06:52:40,678 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 356 flow [2025-01-10 06:52:40,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2025-01-10 06:52:40,679 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2025-01-10 06:52:40,679 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 356 flow [2025-01-10 06:52:40,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 06:52:40,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:40,680 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:52:40,689 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 06:52:40,884 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 06:52:40,884 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:52:40,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:40,885 INFO L85 PathProgramCache]: Analyzing trace with hash -685020109, now seen corresponding path program 1 times [2025-01-10 06:52:40,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:40,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276110034] [2025-01-10 06:52:40,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:40,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:40,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:52:40,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:52:40,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:40,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:40,940 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 06:52:40,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:40,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276110034] [2025-01-10 06:52:40,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276110034] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:40,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:40,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:52:40,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230201341] [2025-01-10 06:52:40,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:40,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:52:40,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:40,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:52:40,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:52:40,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2025-01-10 06:52:40,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 06:52:40,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:40,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2025-01-10 06:52:40,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:44,998 INFO L124 PetriNetUnfolderBase]: 31828/45389 cut-off events. [2025-01-10 06:52:44,998 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2025-01-10 06:52:45,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88736 conditions, 45389 events. 31828/45389 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 5234. Compared 374746 event pairs, 11046 based on Foata normal form. 0/21315 useless extension candidates. Maximal degree in co-relation 88669. Up to 26988 conditions per place. [2025-01-10 06:52:45,276 INFO L140 encePairwiseOnDemand]: 76/80 looper letters, 100 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2025-01-10 06:52:45,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 122 transitions, 635 flow [2025-01-10 06:52:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:52:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:52:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2025-01-10 06:52:45,278 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2025-01-10 06:52:45,278 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 356 flow. Second operand 3 states and 158 transitions. [2025-01-10 06:52:45,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 122 transitions, 635 flow [2025-01-10 06:52:45,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 122 transitions, 611 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-01-10 06:52:45,282 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 346 flow [2025-01-10 06:52:45,282 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2025-01-10 06:52:45,282 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2025-01-10 06:52:45,282 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 346 flow [2025-01-10 06:52:45,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 06:52:45,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:45,283 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:52:45,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:52:45,283 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:52:45,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:45,283 INFO L85 PathProgramCache]: Analyzing trace with hash -685020111, now seen corresponding path program 1 times [2025-01-10 06:52:45,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:45,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157701749] [2025-01-10 06:52:45,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:45,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:45,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:52:45,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:52:45,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:45,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:45,437 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 06:52:45,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:45,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157701749] [2025-01-10 06:52:45,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157701749] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:45,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:45,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:52:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797802042] [2025-01-10 06:52:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:45,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:52:45,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:45,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:52:45,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:52:45,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2025-01-10 06:52:45,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 06:52:45,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:45,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2025-01-10 06:52:45,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:50,387 INFO L124 PetriNetUnfolderBase]: 33867/47119 cut-off events. [2025-01-10 06:52:50,390 INFO L125 PetriNetUnfolderBase]: For 2719/2719 co-relation queries the response was YES. [2025-01-10 06:52:50,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98837 conditions, 47119 events. 33867/47119 cut-off events. For 2719/2719 co-relation queries the response was YES. Maximal size of possible extension queue 5057. Compared 383671 event pairs, 32065 based on Foata normal form. 918/24513 useless extension candidates. Maximal degree in co-relation 98743. Up to 42156 conditions per place. [2025-01-10 06:52:50,692 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 106 selfloop transitions, 5 changer transitions 0/131 dead transitions. [2025-01-10 06:52:50,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 131 transitions, 723 flow [2025-01-10 06:52:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:52:50,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:52:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2025-01-10 06:52:50,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.545 [2025-01-10 06:52:50,693 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 346 flow. Second operand 5 states and 218 transitions. [2025-01-10 06:52:50,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 131 transitions, 723 flow [2025-01-10 06:52:50,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 721 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:52:50,697 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 391 flow [2025-01-10 06:52:50,697 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2025-01-10 06:52:50,698 INFO L279 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2025-01-10 06:52:50,698 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 391 flow [2025-01-10 06:52:50,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 06:52:50,698 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:50,698 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:52:50,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:52:50,698 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:52:50,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:50,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1265480430, now seen corresponding path program 1 times [2025-01-10 06:52:50,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:50,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328667085] [2025-01-10 06:52:50,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:50,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:50,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:52:50,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:52:50,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:50,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:50,748 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 06:52:50,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:50,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328667085] [2025-01-10 06:52:50,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328667085] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:50,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:50,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:52:50,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293339894] [2025-01-10 06:52:50,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:50,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:52:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:50,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:52:50,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:52:50,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 80 [2025-01-10 06:52:50,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:52:50,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:50,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 80 [2025-01-10 06:52:50,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand