./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-min-array-hom.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 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:54:46,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:54:46,464 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:54:46,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:54:46,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:54:46,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:54:46,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:54:46,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:54:46,497 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:54:46,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:54:46,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:54:46,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:54:46,497 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:54:46,498 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:54:46,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:54:46,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:54:46,498 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:54:46,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:54:46,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:54:46,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:54:46,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:54:46,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:54:46,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:54:46,503 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 -> 0224e82797c7b26c7800eaf85be5e5678e7961d21aa4e2312eda2860d261b33a [2025-01-10 06:54:46,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:54:46,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:54:46,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:54:46,789 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:54:46,789 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:54:46,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2025-01-10 06:54:47,954 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d38c2aa7/06dafa2d8cee4372ad81ef95a956ee47/FLAG5d35ceeda [2025-01-10 06:54:48,216 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:54:48,218 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-min-array-hom.wvr.c [2025-01-10 06:54:48,232 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d38c2aa7/06dafa2d8cee4372ad81ef95a956ee47/FLAG5d35ceeda [2025-01-10 06:54:48,538 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7d38c2aa7/06dafa2d8cee4372ad81ef95a956ee47 [2025-01-10 06:54:48,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:54:48,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:54:48,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:54:48,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:54:48,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:54:48,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d81f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48, skipping insertion in model container [2025-01-10 06:54:48,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,556 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:54:48,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:54:48,675 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:54:48,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:54:48,700 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:54:48,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48 WrapperNode [2025-01-10 06:54:48,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:54:48,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:54:48,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:54:48,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:54:48,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,731 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2025-01-10 06:54:48,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:54:48,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:54:48,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:54:48,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:54:48,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,749 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-10 06:54:48,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,754 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:54:48,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:54:48,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:54:48,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:54:48,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (1/1) ... [2025-01-10 06:54:48,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:54:48,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:48,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 06:54:48,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 06:54:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:54:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 06:54:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 06:54:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 06:54:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 06:54:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 06:54:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:54:48,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:54:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:54:48,815 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:54:48,881 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:54:48,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:54:49,118 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:54:49,119 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:54:49,254 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:54:49,254 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:54:49,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:54:49 BoogieIcfgContainer [2025-01-10 06:54:49,255 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:54:49,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:54:49,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:54:49,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:54:49,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:54:48" (1/3) ... [2025-01-10 06:54:49,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8ab922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:54:49, skipping insertion in model container [2025-01-10 06:54:49,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:54:48" (2/3) ... [2025-01-10 06:54:49,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8ab922 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:54:49, skipping insertion in model container [2025-01-10 06:54:49,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:54:49" (3/3) ... [2025-01-10 06:54:49,267 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2025-01-10 06:54:49,278 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:54:49,280 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-min-array-hom.wvr.c that has 4 procedures, 44 locations, 1 initial locations, 4 loop locations, and 8 error locations. [2025-01-10 06:54:49,280 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:54:49,332 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 06:54:49,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 115 flow [2025-01-10 06:54:49,391 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2025-01-10 06:54:49,392 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 06:54:49,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 4/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2025-01-10 06:54:49,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 115 flow [2025-01-10 06:54:49,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 42 transitions, 99 flow [2025-01-10 06:54:49,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:54:49,422 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;@478e4b96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:54:49,422 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-01-10 06:54:49,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:54:49,426 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 06:54:49,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:54:49,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:49,427 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 06:54:49,427 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:49,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash 437489, now seen corresponding path program 1 times [2025-01-10 06:54:49,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:49,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039530686] [2025-01-10 06:54:49,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:49,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:49,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:54:49,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:54:49,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:49,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:49,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:49,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039530686] [2025-01-10 06:54:49,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039530686] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:49,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:49,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:54:49,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360997020] [2025-01-10 06:54:49,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:49,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:49,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:49,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:49,650 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-01-10 06:54:49,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:49,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:49,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-01-10 06:54:49,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:49,841 INFO L124 PetriNetUnfolderBase]: 431/733 cut-off events. [2025-01-10 06:54:49,842 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2025-01-10 06:54:49,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 733 events. 431/733 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3295 event pairs, 306 based on Foata normal form. 1/659 useless extension candidates. Maximal degree in co-relation 1265. Up to 625 conditions per place. [2025-01-10 06:54:49,855 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 25 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2025-01-10 06:54:49,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 163 flow [2025-01-10 06:54:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2025-01-10 06:54:49,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2025-01-10 06:54:49,868 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 99 flow. Second operand 4 states and 107 transitions. [2025-01-10 06:54:49,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 163 flow [2025-01-10 06:54:49,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 154 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-10 06:54:49,880 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2025-01-10 06:54:49,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2025-01-10 06:54:49,886 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2025-01-10 06:54:49,886 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2025-01-10 06:54:49,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:49,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:49,886 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 06:54:49,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:54:49,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:49,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:49,887 INFO L85 PathProgramCache]: Analyzing trace with hash 148763673, now seen corresponding path program 1 times [2025-01-10 06:54:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343462806] [2025-01-10 06:54:49,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:49,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:54:49,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:54:49,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:49,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:50,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:50,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343462806] [2025-01-10 06:54:50,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343462806] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:50,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542569701] [2025-01-10 06:54:50,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:50,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:50,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:50,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:50,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 06:54:50,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:54:50,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:54:50,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:50,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:50,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:50,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:50,137 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:54:50,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542569701] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:50,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:54:50,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-10 06:54:50,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873650945] [2025-01-10 06:54:50,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:50,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:54:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:50,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:54:50,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-10 06:54:50,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-01-10 06:54:50,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:50,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:50,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-01-10 06:54:50,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:50,271 INFO L124 PetriNetUnfolderBase]: 431/732 cut-off events. [2025-01-10 06:54:50,271 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-01-10 06:54:50,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 732 events. 431/732 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3278 event pairs, 306 based on Foata normal form. 1/659 useless extension candidates. Maximal degree in co-relation 1383. Up to 620 conditions per place. [2025-01-10 06:54:50,275 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 21 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2025-01-10 06:54:50,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 171 flow [2025-01-10 06:54:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:54:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:54:50,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2025-01-10 06:54:50,276 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2025-01-10 06:54:50,276 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 6 states and 143 transitions. [2025-01-10 06:54:50,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 171 flow [2025-01-10 06:54:50,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:54:50,278 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 126 flow [2025-01-10 06:54:50,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2025-01-10 06:54:50,278 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2025-01-10 06:54:50,278 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 126 flow [2025-01-10 06:54:50,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:50,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:50,278 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-01-10 06:54:50,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 06:54:50,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:50,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:50,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash 316707001, now seen corresponding path program 1 times [2025-01-10 06:54:50,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:50,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971488786] [2025-01-10 06:54:50,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:50,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:50,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:54:50,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:54:50,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:50,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:50,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:50,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971488786] [2025-01-10 06:54:50,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971488786] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:50,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329458777] [2025-01-10 06:54:50,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:50,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:50,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:50,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:50,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 06:54:50,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 06:54:50,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 06:54:50,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:50,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:50,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:50,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:50,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329458777] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:50,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:50,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 06:54:50,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512410838] [2025-01-10 06:54:50,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:50,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:54:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:50,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:54:50,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:54:50,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-01-10 06:54:50,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 126 flow. Second operand has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:50,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:50,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-01-10 06:54:50,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:50,866 INFO L124 PetriNetUnfolderBase]: 434/744 cut-off events. [2025-01-10 06:54:50,866 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-01-10 06:54:50,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 744 events. 434/744 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3403 event pairs, 306 based on Foata normal form. 3/671 useless extension candidates. Maximal degree in co-relation 1384. Up to 627 conditions per place. [2025-01-10 06:54:50,871 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2025-01-10 06:54:50,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 254 flow [2025-01-10 06:54:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:54:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:54:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2025-01-10 06:54:50,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2025-01-10 06:54:50,873 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 126 flow. Second operand 10 states and 230 transitions. [2025-01-10 06:54:50,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 254 flow [2025-01-10 06:54:50,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 208 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-01-10 06:54:50,874 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 178 flow [2025-01-10 06:54:50,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2025-01-10 06:54:50,875 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2025-01-10 06:54:50,875 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 178 flow [2025-01-10 06:54:50,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.083333333333332) internal successors, (241), 12 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:50,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:50,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:50,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 06:54:51,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:51,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:51,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:51,077 INFO L85 PathProgramCache]: Analyzing trace with hash -503496100, now seen corresponding path program 1 times [2025-01-10 06:54:51,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:51,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842167906] [2025-01-10 06:54:51,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:51,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:51,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:54:51,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:54:51,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:51,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:51,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842167906] [2025-01-10 06:54:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842167906] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:51,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:51,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:54:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606712102] [2025-01-10 06:54:51,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:51,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:51,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:51,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:51,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:51,150 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:51,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:51,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:51,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:51,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:51,356 INFO L124 PetriNetUnfolderBase]: 1064/1805 cut-off events. [2025-01-10 06:54:51,356 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2025-01-10 06:54:51,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 1805 events. 1064/1805 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9679 event pairs, 449 based on Foata normal form. 42/1735 useless extension candidates. Maximal degree in co-relation 3417. Up to 1096 conditions per place. [2025-01-10 06:54:51,365 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 65 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2025-01-10 06:54:51,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 382 flow [2025-01-10 06:54:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2025-01-10 06:54:51,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6968085106382979 [2025-01-10 06:54:51,366 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 178 flow. Second operand 4 states and 131 transitions. [2025-01-10 06:54:51,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 382 flow [2025-01-10 06:54:51,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 371 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-01-10 06:54:51,368 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 196 flow [2025-01-10 06:54:51,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2025-01-10 06:54:51,369 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-01-10 06:54:51,369 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 196 flow [2025-01-10 06:54:51,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:51,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:51,370 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:51,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 06:54:51,370 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:51,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1067728405, now seen corresponding path program 1 times [2025-01-10 06:54:51,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:51,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799895430] [2025-01-10 06:54:51,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:51,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:51,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 06:54:51,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 06:54:51,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:51,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:51,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:51,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799895430] [2025-01-10 06:54:51,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799895430] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:51,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:51,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:54:51,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870235587] [2025-01-10 06:54:51,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:51,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:51,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:51,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:51,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:51,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:51,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:51,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:51,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:51,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:51,689 INFO L124 PetriNetUnfolderBase]: 1708/2740 cut-off events. [2025-01-10 06:54:51,690 INFO L125 PetriNetUnfolderBase]: For 760/1048 co-relation queries the response was YES. [2025-01-10 06:54:51,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 2740 events. 1708/2740 cut-off events. For 760/1048 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14861 event pairs, 787 based on Foata normal form. 161/2755 useless extension candidates. Maximal degree in co-relation 5968. Up to 1698 conditions per place. [2025-01-10 06:54:51,708 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 69 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2025-01-10 06:54:51,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 438 flow [2025-01-10 06:54:51,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2025-01-10 06:54:51,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6861702127659575 [2025-01-10 06:54:51,711 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 196 flow. Second operand 4 states and 129 transitions. [2025-01-10 06:54:51,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 438 flow [2025-01-10 06:54:51,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:54:51,714 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 222 flow [2025-01-10 06:54:51,714 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2025-01-10 06:54:51,715 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2025-01-10 06:54:51,716 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 222 flow [2025-01-10 06:54:51,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:51,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:51,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:51,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 06:54:51,716 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:51,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash 935414523, now seen corresponding path program 1 times [2025-01-10 06:54:51,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:51,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985356097] [2025-01-10 06:54:51,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:51,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:51,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 06:54:51,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 06:54:51,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:51,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:51,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:51,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985356097] [2025-01-10 06:54:51,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985356097] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:51,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:51,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:54:51,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369482989] [2025-01-10 06:54:51,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:51,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 06:54:51,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:51,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 06:54:51,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 06:54:51,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2025-01-10 06:54:51,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:51,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:51,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2025-01-10 06:54:51,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:52,127 INFO L124 PetriNetUnfolderBase]: 1059/1768 cut-off events. [2025-01-10 06:54:52,127 INFO L125 PetriNetUnfolderBase]: For 761/1018 co-relation queries the response was YES. [2025-01-10 06:54:52,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4184 conditions, 1768 events. 1059/1768 cut-off events. For 761/1018 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9364 event pairs, 724 based on Foata normal form. 92/1689 useless extension candidates. Maximal degree in co-relation 4153. Up to 1469 conditions per place. [2025-01-10 06:54:52,158 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2025-01-10 06:54:52,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 297 flow [2025-01-10 06:54:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 06:54:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 06:54:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2025-01-10 06:54:52,162 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2025-01-10 06:54:52,162 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 222 flow. Second operand 3 states and 90 transitions. [2025-01-10 06:54:52,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 297 flow [2025-01-10 06:54:52,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:54:52,169 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 220 flow [2025-01-10 06:54:52,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2025-01-10 06:54:52,170 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2025-01-10 06:54:52,170 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 220 flow [2025-01-10 06:54:52,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:52,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:52,170 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:52,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 06:54:52,170 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:52,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:52,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1163685677, now seen corresponding path program 1 times [2025-01-10 06:54:52,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:52,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893582890] [2025-01-10 06:54:52,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:52,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:52,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 06:54:52,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 06:54:52,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:52,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:54:52,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:52,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893582890] [2025-01-10 06:54:52,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893582890] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:52,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:52,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:54:52,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536831923] [2025-01-10 06:54:52,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:52,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:54:52,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:52,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:54:52,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:54:52,342 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:52,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:52,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:52,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:52,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:52,976 INFO L124 PetriNetUnfolderBase]: 1495/2340 cut-off events. [2025-01-10 06:54:52,978 INFO L125 PetriNetUnfolderBase]: For 912/1319 co-relation queries the response was YES. [2025-01-10 06:54:52,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 2340 events. 1495/2340 cut-off events. For 912/1319 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12136 event pairs, 388 based on Foata normal form. 220/2436 useless extension candidates. Maximal degree in co-relation 5450. Up to 786 conditions per place. [2025-01-10 06:54:52,994 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 63 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2025-01-10 06:54:52,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 464 flow [2025-01-10 06:54:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:54:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:54:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-01-10 06:54:52,996 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2025-01-10 06:54:52,996 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 220 flow. Second operand 5 states and 139 transitions. [2025-01-10 06:54:52,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 464 flow [2025-01-10 06:54:52,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 06:54:53,000 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 230 flow [2025-01-10 06:54:53,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2025-01-10 06:54:53,002 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2025-01-10 06:54:53,002 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 230 flow [2025-01-10 06:54:53,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:53,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:53,002 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-01-10 06:54:53,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 06:54:53,002 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:53,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:53,003 INFO L85 PathProgramCache]: Analyzing trace with hash -230664991, now seen corresponding path program 2 times [2025-01-10 06:54:53,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:53,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492101718] [2025-01-10 06:54:53,003 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:54:53,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:53,011 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:54:53,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:54:53,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:54:53,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:54:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:53,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492101718] [2025-01-10 06:54:53,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492101718] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:53,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858788656] [2025-01-10 06:54:53,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:54:53,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:53,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:53,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:53,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 06:54:53,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-10 06:54:53,100 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-01-10 06:54:53,100 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 06:54:53,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:53,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 06:54:53,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:54:53,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-10 06:54:53,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858788656] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:53,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:53,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-01-10 06:54:53,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977959466] [2025-01-10 06:54:53,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:53,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:54:53,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:53,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:54:53,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:54:53,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2025-01-10 06:54:53,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:53,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:53,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2025-01-10 06:54:53,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:53,256 INFO L124 PetriNetUnfolderBase]: 1059/1731 cut-off events. [2025-01-10 06:54:53,256 INFO L125 PetriNetUnfolderBase]: For 813/1070 co-relation queries the response was YES. [2025-01-10 06:54:53,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 1731 events. 1059/1731 cut-off events. For 813/1070 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8937 event pairs, 724 based on Foata normal form. 92/1689 useless extension candidates. Maximal degree in co-relation 4266. Up to 1460 conditions per place. [2025-01-10 06:54:53,266 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 24 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2025-01-10 06:54:53,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 56 transitions, 298 flow [2025-01-10 06:54:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:53,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-01-10 06:54:53,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2025-01-10 06:54:53,267 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 230 flow. Second operand 4 states and 101 transitions. [2025-01-10 06:54:53,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 56 transitions, 298 flow [2025-01-10 06:54:53,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 272 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-01-10 06:54:53,270 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 224 flow [2025-01-10 06:54:53,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2025-01-10 06:54:53,270 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2025-01-10 06:54:53,270 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 224 flow [2025-01-10 06:54:53,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:53,271 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:53,271 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:53,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 06:54:53,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:53,472 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:53,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1714517143, now seen corresponding path program 1 times [2025-01-10 06:54:53,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:53,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507565463] [2025-01-10 06:54:53,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:53,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:54:53,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:54:53,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:53,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:53,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:53,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507565463] [2025-01-10 06:54:53,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507565463] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:53,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728828268] [2025-01-10 06:54:53,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:53,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:53,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:53,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:53,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 06:54:53,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:54:53,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:54:53,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:53,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:53,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:53,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:54:53,679 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 06:54:53,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728828268] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:53,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 06:54:53,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2025-01-10 06:54:53,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872027534] [2025-01-10 06:54:53,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:53,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 06:54:53,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:53,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 06:54:53,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:54:53,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-01-10 06:54:53,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:53,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:53,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-01-10 06:54:53,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:53,912 INFO L124 PetriNetUnfolderBase]: 1792/2636 cut-off events. [2025-01-10 06:54:53,913 INFO L125 PetriNetUnfolderBase]: For 1040/1516 co-relation queries the response was YES. [2025-01-10 06:54:53,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 2636 events. 1792/2636 cut-off events. For 1040/1516 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12831 event pairs, 556 based on Foata normal form. 166/2596 useless extension candidates. Maximal degree in co-relation 6195. Up to 1162 conditions per place. [2025-01-10 06:54:53,926 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 10 changer transitions 3/87 dead transitions. [2025-01-10 06:54:53,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 476 flow [2025-01-10 06:54:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 06:54:53,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 06:54:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2025-01-10 06:54:53,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2025-01-10 06:54:53,927 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 224 flow. Second operand 6 states and 153 transitions. [2025-01-10 06:54:53,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 476 flow [2025-01-10 06:54:53,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 446 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:54:53,930 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 229 flow [2025-01-10 06:54:53,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2025-01-10 06:54:53,930 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2025-01-10 06:54:53,930 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 229 flow [2025-01-10 06:54:53,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:53,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:53,931 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:53,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 06:54:54,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-01-10 06:54:54,134 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:54,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:54,134 INFO L85 PathProgramCache]: Analyzing trace with hash 74070458, now seen corresponding path program 1 times [2025-01-10 06:54:54,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:54,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638077743] [2025-01-10 06:54:54,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:54,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:54,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:54:54,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:54:54,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:54,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:54:54,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:54,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638077743] [2025-01-10 06:54:54,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638077743] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:54,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648299510] [2025-01-10 06:54:54,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:54,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:54,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:54,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:54,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 06:54:54,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-10 06:54:54,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-10 06:54:54,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:54,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:54,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 06:54:54,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:54,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:54,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648299510] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:54,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:54,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 19 [2025-01-10 06:54:54,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120345492] [2025-01-10 06:54:54,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:54,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 06:54:54,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:54,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 06:54:54,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-01-10 06:54:54,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2025-01-10 06:54:54,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 229 flow. Second operand has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:54,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:54,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2025-01-10 06:54:54,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:55,182 INFO L124 PetriNetUnfolderBase]: 3676/5701 cut-off events. [2025-01-10 06:54:55,182 INFO L125 PetriNetUnfolderBase]: For 3910/4579 co-relation queries the response was YES. [2025-01-10 06:54:55,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15035 conditions, 5701 events. 3676/5701 cut-off events. For 3910/4579 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 33424 event pairs, 618 based on Foata normal form. 329/5865 useless extension candidates. Maximal degree in co-relation 8810. Up to 860 conditions per place. [2025-01-10 06:54:55,206 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 153 selfloop transitions, 23 changer transitions 6/194 dead transitions. [2025-01-10 06:54:55,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 194 transitions, 1089 flow [2025-01-10 06:54:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 06:54:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-10 06:54:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 361 transitions. [2025-01-10 06:54:55,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5486322188449848 [2025-01-10 06:54:55,207 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 229 flow. Second operand 14 states and 361 transitions. [2025-01-10 06:54:55,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 194 transitions, 1089 flow [2025-01-10 06:54:55,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 194 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:54:55,215 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 289 flow [2025-01-10 06:54:55,215 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=289, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2025-01-10 06:54:55,215 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2025-01-10 06:54:55,216 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 289 flow [2025-01-10 06:54:55,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.0) internal successors, (323), 19 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:55,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:55,216 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:55,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 06:54:55,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-10 06:54:55,417 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:55,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1560444756, now seen corresponding path program 1 times [2025-01-10 06:54:55,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:55,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108945168] [2025-01-10 06:54:55,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:55,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:55,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:54:55,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:54:55,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:55,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:54:55,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108945168] [2025-01-10 06:54:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108945168] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100554741] [2025-01-10 06:54:55,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:55,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:55,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:55,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:55,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 06:54:55,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 06:54:55,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 06:54:55,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:55,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:55,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 06:54:55,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:54:55,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 06:54:55,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100554741] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:55,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:55,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2025-01-10 06:54:55,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101471189] [2025-01-10 06:54:55,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:55,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 06:54:55,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:55,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 06:54:55,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-01-10 06:54:55,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:55,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 289 flow. Second operand has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:55,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:55,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:55,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:56,344 INFO L124 PetriNetUnfolderBase]: 2352/3845 cut-off events. [2025-01-10 06:54:56,344 INFO L125 PetriNetUnfolderBase]: For 3806/4013 co-relation queries the response was YES. [2025-01-10 06:54:56,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10722 conditions, 3845 events. 2352/3845 cut-off events. For 3806/4013 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22018 event pairs, 1665 based on Foata normal form. 70/3774 useless extension candidates. Maximal degree in co-relation 8538. Up to 2667 conditions per place. [2025-01-10 06:54:56,391 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 29 selfloop transitions, 10 changer transitions 35/89 dead transitions. [2025-01-10 06:54:56,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 547 flow [2025-01-10 06:54:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 06:54:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 06:54:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2025-01-10 06:54:56,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2025-01-10 06:54:56,393 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 289 flow. Second operand 8 states and 203 transitions. [2025-01-10 06:54:56,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 547 flow [2025-01-10 06:54:56,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 503 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-01-10 06:54:56,410 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 247 flow [2025-01-10 06:54:56,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=247, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2025-01-10 06:54:56,411 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2025-01-10 06:54:56,411 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 247 flow [2025-01-10 06:54:56,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.6875) internal successors, (315), 16 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:56,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:56,414 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:56,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 06:54:56,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-10 06:54:56,615 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:56,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:56,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1305173896, now seen corresponding path program 1 times [2025-01-10 06:54:56,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:56,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262797514] [2025-01-10 06:54:56,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:56,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:56,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:54:56,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:54:56,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:56,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:54:56,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:56,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262797514] [2025-01-10 06:54:56,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262797514] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:56,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241874689] [2025-01-10 06:54:56,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:56,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:56,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:56,728 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:56,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 06:54:56,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-10 06:54:56,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-10 06:54:56,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:56,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:56,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 06:54:56,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:54:56,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:54:56,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241874689] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:56,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:56,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-01-10 06:54:56,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924354889] [2025-01-10 06:54:56,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:56,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 06:54:56,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:56,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 06:54:56,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-01-10 06:54:56,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 47 [2025-01-10 06:54:56,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 247 flow. Second operand has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:56,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:56,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 47 [2025-01-10 06:54:56,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:57,424 INFO L124 PetriNetUnfolderBase]: 4139/6551 cut-off events. [2025-01-10 06:54:57,424 INFO L125 PetriNetUnfolderBase]: For 5964/7101 co-relation queries the response was YES. [2025-01-10 06:54:57,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17785 conditions, 6551 events. 4139/6551 cut-off events. For 5964/7101 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 36867 event pairs, 847 based on Foata normal form. 553/7048 useless extension candidates. Maximal degree in co-relation 17710. Up to 2303 conditions per place. [2025-01-10 06:54:57,451 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 169 selfloop transitions, 13 changer transitions 0/195 dead transitions. [2025-01-10 06:54:57,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 195 transitions, 1149 flow [2025-01-10 06:54:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 06:54:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 06:54:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 328 transitions. [2025-01-10 06:54:57,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6978723404255319 [2025-01-10 06:54:57,456 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 247 flow. Second operand 10 states and 328 transitions. [2025-01-10 06:54:57,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 195 transitions, 1149 flow [2025-01-10 06:54:57,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 195 transitions, 1089 flow, removed 20 selfloop flow, removed 8 redundant places. [2025-01-10 06:54:57,466 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 305 flow [2025-01-10 06:54:57,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=305, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2025-01-10 06:54:57,468 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2025-01-10 06:54:57,468 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 305 flow [2025-01-10 06:54:57,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.916666666666668) internal successors, (239), 12 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:57,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:57,469 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:57,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-10 06:54:57,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:57,670 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:57,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:57,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1587479340, now seen corresponding path program 2 times [2025-01-10 06:54:57,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:57,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299692117] [2025-01-10 06:54:57,670 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:54:57,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:57,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 06:54:57,683 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 06:54:57,684 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:54:57,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:54:57,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:57,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299692117] [2025-01-10 06:54:57,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299692117] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:54:57,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:54:57,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:54:57,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096204039] [2025-01-10 06:54:57,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:54:57,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:54:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:57,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:54:57,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:54:57,734 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-01-10 06:54:57,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 305 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:57,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:57,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-01-10 06:54:57,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:54:58,135 INFO L124 PetriNetUnfolderBase]: 4989/7277 cut-off events. [2025-01-10 06:54:58,135 INFO L125 PetriNetUnfolderBase]: For 9293/9930 co-relation queries the response was YES. [2025-01-10 06:54:58,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21913 conditions, 7277 events. 4989/7277 cut-off events. For 9293/9930 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39672 event pairs, 573 based on Foata normal form. 166/7195 useless extension candidates. Maximal degree in co-relation 21844. Up to 2995 conditions per place. [2025-01-10 06:54:58,170 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 83 selfloop transitions, 7 changer transitions 0/104 dead transitions. [2025-01-10 06:54:58,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 104 transitions, 707 flow [2025-01-10 06:54:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:54:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:54:58,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2025-01-10 06:54:58,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2025-01-10 06:54:58,171 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 305 flow. Second operand 4 states and 119 transitions. [2025-01-10 06:54:58,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 104 transitions, 707 flow [2025-01-10 06:54:58,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 678 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-01-10 06:54:58,181 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 304 flow [2025-01-10 06:54:58,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2025-01-10 06:54:58,182 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2025-01-10 06:54:58,182 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 304 flow [2025-01-10 06:54:58,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:58,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:54:58,182 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:54:58,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-10 06:54:58,182 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:54:58,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:54:58,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1967219751, now seen corresponding path program 1 times [2025-01-10 06:54:58,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:54:58,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582286815] [2025-01-10 06:54:58,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:58,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:54:58,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:54:58,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:54:58,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:58,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-10 06:54:58,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:54:58,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582286815] [2025-01-10 06:54:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582286815] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:54:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397700047] [2025-01-10 06:54:58,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:54:58,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:54:58,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:54:58,256 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:54:58,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 06:54:58,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:54:58,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:54:58,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:54:58,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:54:58,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 06:54:58,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:54:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:58,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:54:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:54:58,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397700047] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:54:58,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:54:58,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 24 [2025-01-10 06:54:58,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648661428] [2025-01-10 06:54:58,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:54:58,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-10 06:54:58,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:54:58,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-10 06:54:58,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2025-01-10 06:54:58,929 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2025-01-10 06:54:58,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 304 flow. Second operand has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:54:58,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:54:58,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2025-01-10 06:54:58,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:00,386 INFO L124 PetriNetUnfolderBase]: 10729/15956 cut-off events. [2025-01-10 06:55:00,386 INFO L125 PetriNetUnfolderBase]: For 20605/22187 co-relation queries the response was YES. [2025-01-10 06:55:00,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48590 conditions, 15956 events. 10729/15956 cut-off events. For 20605/22187 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 98711 event pairs, 2903 based on Foata normal form. 552/16416 useless extension candidates. Maximal degree in co-relation 39450. Up to 4354 conditions per place. [2025-01-10 06:55:00,468 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 222 selfloop transitions, 23 changer transitions 9/268 dead transitions. [2025-01-10 06:55:00,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 268 transitions, 1818 flow [2025-01-10 06:55:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 06:55:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 06:55:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 418 transitions. [2025-01-10 06:55:00,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.523153942428035 [2025-01-10 06:55:00,471 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 304 flow. Second operand 17 states and 418 transitions. [2025-01-10 06:55:00,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 268 transitions, 1818 flow [2025-01-10 06:55:00,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 268 transitions, 1788 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-10 06:55:00,511 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 387 flow [2025-01-10 06:55:00,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=387, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2025-01-10 06:55:00,511 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places. [2025-01-10 06:55:00,511 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 387 flow [2025-01-10 06:55:00,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.041666666666668) internal successors, (409), 24 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:00,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:00,512 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:00,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-10 06:55:00,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:00,712 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:55:00,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:00,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1836297936, now seen corresponding path program 2 times [2025-01-10 06:55:00,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:00,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176457910] [2025-01-10 06:55:00,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:00,720 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 06:55:00,724 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 06:55:00,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:00,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-10 06:55:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176457910] [2025-01-10 06:55:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176457910] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281905579] [2025-01-10 06:55:00,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:00,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:00,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:00,799 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:00,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-10 06:55:00,846 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-10 06:55:00,859 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-10 06:55:00,859 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:00,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:00,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:55:00,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-10 06:55:00,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-10 06:55:01,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281905579] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:01,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:01,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2025-01-10 06:55:01,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35265182] [2025-01-10 06:55:01,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:01,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 06:55:01,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:01,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 06:55:01,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-10 06:55:01,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-01-10 06:55:01,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 387 flow. Second operand has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:01,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:01,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-01-10 06:55:01,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:02,262 INFO L124 PetriNetUnfolderBase]: 10328/15385 cut-off events. [2025-01-10 06:55:02,263 INFO L125 PetriNetUnfolderBase]: For 20696/22247 co-relation queries the response was YES. [2025-01-10 06:55:02,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48114 conditions, 15385 events. 10328/15385 cut-off events. For 20696/22247 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 94692 event pairs, 1783 based on Foata normal form. 253/15523 useless extension candidates. Maximal degree in co-relation 39127. Up to 6270 conditions per place. [2025-01-10 06:55:02,379 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 96 selfloop transitions, 20 changer transitions 3/133 dead transitions. [2025-01-10 06:55:02,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 935 flow [2025-01-10 06:55:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 06:55:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 06:55:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2025-01-10 06:55:02,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2025-01-10 06:55:02,385 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 387 flow. Second operand 7 states and 183 transitions. [2025-01-10 06:55:02,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 935 flow [2025-01-10 06:55:02,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 900 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-01-10 06:55:02,479 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 400 flow [2025-01-10 06:55:02,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2025-01-10 06:55:02,481 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 40 predicate places. [2025-01-10 06:55:02,485 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 400 flow [2025-01-10 06:55:02,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:02,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:55:02,486 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-10 06:55:02,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:02,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:02,686 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2025-01-10 06:55:02,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:55:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1751832174, now seen corresponding path program 2 times [2025-01-10 06:55:02,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:55:02,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810762892] [2025-01-10 06:55:02,687 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:02,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:55:02,699 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-01-10 06:55:02,710 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 06:55:02,710 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:02,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-10 06:55:02,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:55:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810762892] [2025-01-10 06:55:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810762892] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 06:55:02,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396493627] [2025-01-10 06:55:02,845 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 06:55:02,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 06:55:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:55:02,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 06:55:02,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-10 06:55:02,891 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-01-10 06:55:02,906 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-10 06:55:02,906 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 06:55:02,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:55:02,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:55:02,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:55:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-10 06:55:02,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 06:55:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-10 06:55:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396493627] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 06:55:02,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 06:55:02,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-01-10 06:55:02,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612042417] [2025-01-10 06:55:02,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 06:55:02,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 06:55:02,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:55:02,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:55:02,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:55:02,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2025-01-10 06:55:02,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:02,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:55:02,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2025-01-10 06:55:02,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:55:04,570 INFO L124 PetriNetUnfolderBase]: 11132/17558 cut-off events. [2025-01-10 06:55:04,570 INFO L125 PetriNetUnfolderBase]: For 33220/34653 co-relation queries the response was YES. [2025-01-10 06:55:04,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55706 conditions, 17558 events. 11132/17558 cut-off events. For 33220/34653 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 114016 event pairs, 2816 based on Foata normal form. 974/18402 useless extension candidates. Maximal degree in co-relation 42951. Up to 6832 conditions per place. [2025-01-10 06:55:04,619 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2025-01-10 06:55:04,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 114 transitions, 844 flow [2025-01-10 06:55:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:55:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 06:55:04,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-01-10 06:55:04,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2025-01-10 06:55:04,620 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 400 flow. Second operand 5 states and 139 transitions. [2025-01-10 06:55:04,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 114 transitions, 844 flow [2025-01-10 06:55:04,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 764 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-01-10 06:55:04,683 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2025-01-10 06:55:04,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2025-01-10 06:55:04,684 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 34 predicate places. [2025-01-10 06:55:04,684 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2025-01-10 06:55:04,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 06:55:04,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2025-01-10 06:55:04,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2025-01-10 06:55:04,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2025-01-10 06:55:04,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2025-01-10 06:55:04,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2025-01-10 06:55:04,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2025-01-10 06:55:04,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2025-01-10 06:55:04,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2025-01-10 06:55:04,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2025-01-10 06:55:04,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2025-01-10 06:55:04,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2025-01-10 06:55:04,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2025-01-10 06:55:04,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2025-01-10 06:55:04,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2025-01-10 06:55:04,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2025-01-10 06:55:04,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2025-01-10 06:55:04,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2025-01-10 06:55:04,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-10 06:55:04,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-10 06:55:04,892 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:55:04,899 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-10 06:55:04,900 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 06:55:04,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:55:04 BasicIcfg [2025-01-10 06:55:04,906 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 06:55:04,907 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 06:55:04,907 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 06:55:04,907 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 06:55:04,908 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:54:49" (3/4) ... [2025-01-10 06:55:04,913 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-10 06:55:04,915 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-01-10 06:55:04,915 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-01-10 06:55:04,915 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-01-10 06:55:04,919 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 89 nodes and edges [2025-01-10 06:55:04,921 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-01-10 06:55:04,921 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-01-10 06:55:04,922 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-01-10 06:55:04,984 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-10 06:55:04,984 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-10 06:55:04,984 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 06:55:04,985 INFO L158 Benchmark]: Toolchain (without parser) took 16443.81ms. Allocated memory was 167.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 123.6MB in the beginning and 1.1GB in the end (delta: -980.4MB). Peak memory consumption was 352.0MB. Max. memory is 16.1GB. [2025-01-10 06:55:04,985 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:55:04,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.12ms. Allocated memory is still 167.8MB. Free memory was 123.6MB in the beginning and 111.4MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:55:04,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.76ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 110.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:55:04,985 INFO L158 Benchmark]: Boogie Preprocessor took 31.84ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 108.2MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:55:04,986 INFO L158 Benchmark]: RCFGBuilder took 490.70ms. Allocated memory is still 167.8MB. Free memory was 108.2MB in the beginning and 71.1MB in the end (delta: 37.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-01-10 06:55:04,986 INFO L158 Benchmark]: TraceAbstraction took 15649.65ms. Allocated memory was 167.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 70.3MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 637.2MB. Max. memory is 16.1GB. [2025-01-10 06:55:04,986 INFO L158 Benchmark]: Witness Printer took 77.54ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:55:04,987 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 160.12ms. Allocated memory is still 167.8MB. Free memory was 123.6MB in the beginning and 111.4MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.76ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 110.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.84ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 108.2MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 490.70ms. Allocated memory is still 167.8MB. Free memory was 108.2MB in the beginning and 71.1MB in the end (delta: 37.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15649.65ms. Allocated memory was 167.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 70.3MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 637.2MB. Max. memory is 16.1GB. * Witness Printer took 77.54ms. Allocated memory is still 1.5GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 7.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 74 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.5s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1431 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1345 mSDsluCounter, 885 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 858 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4779 IncrementalHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 27 mSDtfsCounter, 4779 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 440 GetRequests, 276 SyntacticMatches, 7 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=15, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 441 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 571 ConstructedInterpolants, 0 QuantifiedInterpolants, 1799 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1136 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 34 InterpolantComputations, 8 PerfectInterpolantSequences, 346/493 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-10 06:55:04,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE