./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.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-alt.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 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:52:24,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:52:24,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:52:24,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:52:24,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:52:24,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:52:24,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:52:24,433 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:52:24,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:52:24,434 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:52:24,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:52:24,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:52:24,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:52:24,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:52:24,436 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:52:24,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:52:24,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:52:24,436 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:52:24,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:52:24,437 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:52:24,437 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:52:24,437 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:52:24,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:52:24,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:52:24,437 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:52:24,437 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:52:24,438 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:52:24,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:52:24,438 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:52:24,438 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:52:24,438 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:52:24,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:24,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:24,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:24,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:24,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:52:24,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:52:24,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:52:24,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:52:24,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:24,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:52:24,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:52:24,440 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:52:24,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:52:24,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:52:24,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:52:24,440 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:52:24,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:52:24,440 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:52:24,440 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:52:24,440 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 -> 2e9e4bd6e9b16aa5f22ad2335ca34ba741869a12ab5a04a80108cf42ed170c0f [2025-01-10 06:52:24,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:52:24,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:52:24,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:52:24,744 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:52:24,744 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:52:24,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2025-01-10 06:52:26,087 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd85bc3bd/cb669288887242cabed3d1a308b6a38d/FLAGd66580b93 [2025-01-10 06:52:26,413 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:52:26,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt.wvr.c [2025-01-10 06:52:26,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd85bc3bd/cb669288887242cabed3d1a308b6a38d/FLAGd66580b93 [2025-01-10 06:52:26,663 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bd85bc3bd/cb669288887242cabed3d1a308b6a38d [2025-01-10 06:52:26,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:52:26,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:52:26,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:26,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:52:26,675 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:52:26,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:26,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7638d271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26, skipping insertion in model container [2025-01-10 06:52:26,679 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:26,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:52:26,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:26,892 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:52:26,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:52:26,950 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:52:26,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26 WrapperNode [2025-01-10 06:52:26,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:52:26,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:26,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:52:26,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:52:26,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:26,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,011 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 341 [2025-01-10 06:52:27,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:52:27,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:52:27,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:52:27,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:52:27,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,064 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 06:52:27,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,072 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:52:27,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:52:27,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:52:27,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:52:27,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (1/1) ... [2025-01-10 06:52:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:52:27,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:27,123 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 06:52:27,126 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 06:52:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:52:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:52:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:52:27,149 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:52:27,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:52:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:52:27,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:52:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-10 06:52:27,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-10 06:52:27,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:52:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:52:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:52:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:52:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:52:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:52:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:52:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:52:27,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:52:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:52:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:52:27,154 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 06:52:27,273 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:52:27,275 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:52:27,821 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:52:27,822 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:52:28,300 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:52:28,301 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:52:28,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:52:28 BoogieIcfgContainer [2025-01-10 06:52:28,301 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:52:28,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:52:28,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:52:28,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:52:28,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:52:26" (1/3) ... [2025-01-10 06:52:28,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8a7fa5 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 06:52:28,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:52:26" (2/3) ... [2025-01-10 06:52:28,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8a7fa5 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 06:52:28,311 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 06:52:28,312 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2025-01-10 06:52:28,328 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:52:28,329 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt.wvr.c that has 5 procedures, 77 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2025-01-10 06:52:28,331 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:52:28,485 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-10 06:52:28,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2025-01-10 06:52:28,577 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2025-01-10 06:52:28,580 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-10 06:52:28,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 276 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2025-01-10 06:52:28,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2025-01-10 06:52:28,589 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2025-01-10 06:52:28,599 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:52:28,614 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;@3bf3951b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:52:28,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-01-10 06:52:28,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:52:28,620 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:52:28,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:52:28,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:28,621 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:52:28,621 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 06:52:28,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:28,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1051521, now seen corresponding path program 1 times [2025-01-10 06:52:28,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:28,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136034242] [2025-01-10 06:52:28,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:28,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:28,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:52:28,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:52:28,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:28,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:28,905 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 06:52:28,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136034242] [2025-01-10 06:52:28,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136034242] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:28,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:28,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:52:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973556057] [2025-01-10 06:52:28,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:28,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:52:28,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:28,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:52:28,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:52:28,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2025-01-10 06:52:28,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 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 06:52:28,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:28,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2025-01-10 06:52:28,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:34,851 INFO L124 PetriNetUnfolderBase]: 38398/51624 cut-off events. [2025-01-10 06:52:34,851 INFO L125 PetriNetUnfolderBase]: For 1386/1386 co-relation queries the response was YES. [2025-01-10 06:52:34,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101334 conditions, 51624 events. 38398/51624 cut-off events. For 1386/1386 co-relation queries the response was YES. Maximal size of possible extension queue 5362. Compared 374966 event pairs, 28674 based on Foata normal form. 2/24517 useless extension candidates. Maximal degree in co-relation 95424. Up to 47902 conditions per place. [2025-01-10 06:52:35,279 INFO L140 encePairwiseOnDemand]: 63/82 looper letters, 49 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2025-01-10 06:52:35,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 281 flow [2025-01-10 06:52:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:52:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:52:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2025-01-10 06:52:35,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2025-01-10 06:52:35,291 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2025-01-10 06:52:35,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 281 flow [2025-01-10 06:52:35,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 268 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-01-10 06:52:35,622 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 204 flow [2025-01-10 06:52:35,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2025-01-10 06:52:35,632 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -9 predicate places. [2025-01-10 06:52:35,633 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 204 flow [2025-01-10 06:52:35,634 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 06:52:35,634 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:35,634 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:52:35,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:52:35,634 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 06:52:35,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:35,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1262128145, now seen corresponding path program 1 times [2025-01-10 06:52:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:35,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142011261] [2025-01-10 06:52:35,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:35,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:35,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:52:35,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:52:35,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:35,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:35,865 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 06:52:35,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142011261] [2025-01-10 06:52:35,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142011261] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:52:35,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145101023] [2025-01-10 06:52:35,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:35,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:35,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:35,870 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 06:52:36,019 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 06:52:36,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:52:36,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:52:36,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:36,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:36,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:52:36,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:52:36,175 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 06:52:36,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:52:36,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145101023] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:36,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:52:36,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:52:36,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341936676] [2025-01-10 06:52:36,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:36,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:52:36,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:36,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:52:36,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:52:36,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2025-01-10 06:52:36,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 204 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 06:52:36,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:36,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2025-01-10 06:52:36,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:40,640 INFO L124 PetriNetUnfolderBase]: 38398/51622 cut-off events. [2025-01-10 06:52:40,641 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2025-01-10 06:52:40,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100632 conditions, 51622 events. 38398/51622 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 5362. Compared 374810 event pairs, 28674 based on Foata normal form. 2/24518 useless extension candidates. Maximal degree in co-relation 100582. Up to 47892 conditions per place. [2025-01-10 06:52:40,953 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 42 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2025-01-10 06:52:40,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 304 flow [2025-01-10 06:52:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:52:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:52:40,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2025-01-10 06:52:40,957 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114 [2025-01-10 06:52:40,958 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 204 flow. Second operand 6 states and 188 transitions. [2025-01-10 06:52:40,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 304 flow [2025-01-10 06:52:40,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:52:40,961 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 220 flow [2025-01-10 06:52:40,962 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2025-01-10 06:52:40,962 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2025-01-10 06:52:40,962 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 220 flow [2025-01-10 06:52:40,963 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 06:52:40,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:40,963 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:52:40,972 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 06:52:41,164 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 06:52:41,164 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 06:52:41,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:41,165 INFO L85 PathProgramCache]: Analyzing trace with hash 471267874, now seen corresponding path program 1 times [2025-01-10 06:52:41,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:41,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312818842] [2025-01-10 06:52:41,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:41,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:41,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:52:41,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:52:41,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:41,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:41,293 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 06:52:41,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:41,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312818842] [2025-01-10 06:52:41,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312818842] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:52:41,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119777871] [2025-01-10 06:52:41,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:41,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:52:41,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:52:41,297 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 06:52:41,299 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 06:52:41,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:52:41,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:52:41,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:41,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:41,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:52:41,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:52:41,451 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 06:52:41,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:52:41,496 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 06:52:41,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119777871] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:52:41,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:52:41,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:52:41,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478992594] [2025-01-10 06:52:41,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:52:41,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:52:41,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:41,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:52:41,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:52:41,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2025-01-10 06:52:41,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 220 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 06:52:41,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:41,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2025-01-10 06:52:41,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:46,255 INFO L124 PetriNetUnfolderBase]: 38404/51646 cut-off events. [2025-01-10 06:52:46,255 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2025-01-10 06:52:46,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100726 conditions, 51646 events. 38404/51646 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 5362. Compared 374770 event pairs, 28674 based on Foata normal form. 6/24545 useless extension candidates. Maximal degree in co-relation 100584. Up to 47903 conditions per place. [2025-01-10 06:52:46,746 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 47 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2025-01-10 06:52:46,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 478 flow [2025-01-10 06:52:46,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:52:46,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:52:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 298 transitions. [2025-01-10 06:52:46,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36341463414634145 [2025-01-10 06:52:46,750 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 220 flow. Second operand 10 states and 298 transitions. [2025-01-10 06:52:46,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 478 flow [2025-01-10 06:52:46,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 420 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-01-10 06:52:46,756 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 360 flow [2025-01-10 06:52:46,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=360, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2025-01-10 06:52:46,757 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2025-01-10 06:52:46,758 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 360 flow [2025-01-10 06:52:46,759 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 06:52:46,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:46,759 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:52:46,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 06:52:46,964 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 06:52:46,964 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:52:46,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:46,965 INFO L85 PathProgramCache]: Analyzing trace with hash 673532101, now seen corresponding path program 1 times [2025-01-10 06:52:46,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:46,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930837638] [2025-01-10 06:52:46,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:46,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:52:47,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:52:47,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:47,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:47,234 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 06:52:47,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:47,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930837638] [2025-01-10 06:52:47,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930837638] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:47,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:47,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:52:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022145531] [2025-01-10 06:52:47,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:47,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:52:47,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:47,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:52:47,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:52:47,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2025-01-10 06:52:47,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 360 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 06:52:47,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:47,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2025-01-10 06:52:47,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:51,648 INFO L124 PetriNetUnfolderBase]: 40732/54120 cut-off events. [2025-01-10 06:52:51,649 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2025-01-10 06:52:51,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106510 conditions, 54120 events. 40732/54120 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 5360. Compared 386669 event pairs, 30522 based on Foata normal form. 709/26042 useless extension candidates. Maximal degree in co-relation 106414. Up to 47918 conditions per place. [2025-01-10 06:52:52,032 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 110 selfloop transitions, 3 changer transitions 0/133 dead transitions. [2025-01-10 06:52:52,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 753 flow [2025-01-10 06:52:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:52:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:52:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2025-01-10 06:52:52,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2025-01-10 06:52:52,037 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 360 flow. Second operand 4 states and 192 transitions. [2025-01-10 06:52:52,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 753 flow [2025-01-10 06:52:52,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 719 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-01-10 06:52:52,043 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 359 flow [2025-01-10 06:52:52,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=359, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2025-01-10 06:52:52,043 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2025-01-10 06:52:52,043 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 359 flow [2025-01-10 06:52:52,044 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 06:52:52,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:52,044 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:52:52,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:52:52,044 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:52:52,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:52,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1765793102, now seen corresponding path program 1 times [2025-01-10 06:52:52,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069223388] [2025-01-10 06:52:52,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:52,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:52,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:52:52,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:52:52,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:52,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:52,210 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 06:52:52,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:52,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069223388] [2025-01-10 06:52:52,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069223388] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:52,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:52,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 06:52:52,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503454400] [2025-01-10 06:52:52,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:52,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:52:52,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:52,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:52:52,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:52:52,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2025-01-10 06:52:52,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 359 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 06:52:52,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:52,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2025-01-10 06:52:52,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:52:56,160 INFO L124 PetriNetUnfolderBase]: 35422/49310 cut-off events. [2025-01-10 06:52:56,160 INFO L125 PetriNetUnfolderBase]: For 3705/3705 co-relation queries the response was YES. [2025-01-10 06:52:56,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106413 conditions, 49310 events. 35422/49310 cut-off events. For 3705/3705 co-relation queries the response was YES. Maximal size of possible extension queue 4870. Compared 379106 event pairs, 27018 based on Foata normal form. 0/24584 useless extension candidates. Maximal degree in co-relation 106319. Up to 44785 conditions per place. [2025-01-10 06:52:56,563 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 68 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2025-01-10 06:52:56,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 495 flow [2025-01-10 06:52:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:52:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:52:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2025-01-10 06:52:56,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2025-01-10 06:52:56,565 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 359 flow. Second operand 3 states and 124 transitions. [2025-01-10 06:52:56,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 495 flow [2025-01-10 06:52:56,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 491 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-01-10 06:52:56,575 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 355 flow [2025-01-10 06:52:56,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2025-01-10 06:52:56,576 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2025-01-10 06:52:56,576 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 355 flow [2025-01-10 06:52:56,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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 06:52:56,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:52:56,577 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:52:56,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:52:56,577 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-01-10 06:52:56,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:52:56,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1765793101, now seen corresponding path program 1 times [2025-01-10 06:52:56,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:52:56,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265865947] [2025-01-10 06:52:56,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:52:56,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:52:56,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:52:56,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:52:56,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:52:56,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:52:56,645 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 06:52:56,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:52:56,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265865947] [2025-01-10 06:52:56,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265865947] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:52:56,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:52:56,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:52:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220680182] [2025-01-10 06:52:56,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:52:56,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:52:56,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:52:56,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:52:56,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:52:56,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2025-01-10 06:52:56,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 355 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 06:52:56,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:52:56,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2025-01-10 06:52:56,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand