./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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-min-max-dec.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 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:52:16,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:52:16,739 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:52:16,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:52:16,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:52:16,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:52:16,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:52:16,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:52:16,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:52:16,777 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:52:16,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:52:16,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:52:16,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:52:16,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:52:16,779 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:52:16,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:52:16,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:52:16,780 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:52:16,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:52:16,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:52:16,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:52:16,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:52:16,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:52:16,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:52:16,780 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:52:16,781 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:52:16,781 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:52:16,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:52:16,781 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:52:16,781 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:52:16,781 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:52:16,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:52:16,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:52:16,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:52:16,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:52:16,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:52:16,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:52:16,782 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:52:16,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:52:16,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:52:16,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:52:16,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:52:16,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:52:16,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:52:16,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:52:16,783 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 -> 47814a6c2066a31334f0b50a42e69cfeb567d5dd7f02dc6c703588c90e067366 [2025-02-06 18:52:17,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:52:17,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:52:17,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:52:17,117 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:52:17,118 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:52:17,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2025-02-06 18:52:18,507 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0e1ad2b71/34424a7cf7204753bf2e8ec1416ee716/FLAG2c4ab7dd6 [2025-02-06 18:52:18,799 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:52:18,800 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2025-02-06 18:52:18,811 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0e1ad2b71/34424a7cf7204753bf2e8ec1416ee716/FLAG2c4ab7dd6 [2025-02-06 18:52:18,835 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0e1ad2b71/34424a7cf7204753bf2e8ec1416ee716 [2025-02-06 18:52:18,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:52:18,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:52:18,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:52:18,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:52:18,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:52:18,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:52:18" (1/1) ... [2025-02-06 18:52:18,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e065841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:18, skipping insertion in model container [2025-02-06 18:52:18,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:52:18" (1/1) ... [2025-02-06 18:52:18,871 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:52:19,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:52:19,048 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:52:19,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:52:19,100 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:52:19,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19 WrapperNode [2025-02-06 18:52:19,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:52:19,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:52:19,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:52:19,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:52:19,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,132 INFO L138 Inliner]: procedures = 23, calls = 26, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 120 [2025-02-06 18:52:19,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:52:19,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:52:19,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:52:19,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:52:19,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,157 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-06 18:52:19,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,163 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:52:19,169 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:52:19,170 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:52:19,170 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:52:19,171 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (1/1) ... [2025-02-06 18:52:19,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:52:19,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:19,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:52:19,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:52:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:52:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:52:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:52:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:52:19,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:52:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:52:19,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:52:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 18:52:19,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 18:52:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:52:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:52:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:52:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:52:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 18:52:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:52:19,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:52:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:52:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:52:19,232 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:52:19,330 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:52:19,331 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:52:19,652 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:52:19,653 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:52:19,863 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:52:19,865 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:52:19,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:52:19 BoogieIcfgContainer [2025-02-06 18:52:19,865 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:52:19,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:52:19,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:52:19,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:52:19,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:52:18" (1/3) ... [2025-02-06 18:52:19,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a556ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:52:19, skipping insertion in model container [2025-02-06 18:52:19,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:52:19" (2/3) ... [2025-02-06 18:52:19,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a556ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:52:19, skipping insertion in model container [2025-02-06 18:52:19,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:52:19" (3/3) ... [2025-02-06 18:52:19,876 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2025-02-06 18:52:19,890 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:52:19,892 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-min-max-dec.wvr.c that has 5 procedures, 78 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-02-06 18:52:19,892 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:52:19,969 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 18:52:20,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 196 flow [2025-02-06 18:52:20,059 INFO L124 PetriNetUnfolderBase]: 7/80 cut-off events. [2025-02-06 18:52:20,061 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 18:52:20,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 7/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 237 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2025-02-06 18:52:20,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 84 transitions, 196 flow [2025-02-06 18:52:20,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 177 flow [2025-02-06 18:52:20,101 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:52:20,110 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;@41e07dfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:52:20,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-02-06 18:52:20,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:52:20,114 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2025-02-06 18:52:20,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:52:20,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:20,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 18:52:20,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:52:20,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:20,120 INFO L85 PathProgramCache]: Analyzing trace with hash 472635679, now seen corresponding path program 1 times [2025-02-06 18:52:20,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:20,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307163132] [2025-02-06 18:52:20,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:20,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:20,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 18:52:20,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 18:52:20,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:20,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:20,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:20,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307163132] [2025-02-06 18:52:20,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307163132] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:20,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:20,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:52:20,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126301664] [2025-02-06 18:52:20,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:20,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:20,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:20,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:20,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:52:20,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-02-06 18:52:20,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:20,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:20,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-02-06 18:52:20,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:25,866 INFO L124 PetriNetUnfolderBase]: 37330/58506 cut-off events. [2025-02-06 18:52:25,868 INFO L125 PetriNetUnfolderBase]: For 1917/1917 co-relation queries the response was YES. [2025-02-06 18:52:26,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107878 conditions, 58506 events. 37330/58506 cut-off events. For 1917/1917 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475545 event pairs, 27934 based on Foata normal form. 1/51047 useless extension candidates. Maximal degree in co-relation 103409. Up to 47232 conditions per place. [2025-02-06 18:52:26,335 INFO L140 encePairwiseOnDemand]: 78/84 looper letters, 49 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2025-02-06 18:52:26,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 289 flow [2025-02-06 18:52:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:52:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:52:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2025-02-06 18:52:26,349 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2025-02-06 18:52:26,351 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 177 flow. Second operand 4 states and 183 transitions. [2025-02-06 18:52:26,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 289 flow [2025-02-06 18:52:26,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 81 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-06 18:52:26,385 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 193 flow [2025-02-06 18:52:26,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2025-02-06 18:52:26,391 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -2 predicate places. [2025-02-06 18:52:26,393 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 193 flow [2025-02-06 18:52:26,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:26,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:26,394 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:26,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:52:26,395 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:52:26,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:26,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1387110353, now seen corresponding path program 1 times [2025-02-06 18:52:26,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:26,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405973091] [2025-02-06 18:52:26,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:26,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:26,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:52:26,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:52:26,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:26,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:26,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:26,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405973091] [2025-02-06 18:52:26,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405973091] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:26,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027651477] [2025-02-06 18:52:26,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:26,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:26,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:26,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:52:26,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:52:26,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:52:26,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:52:26,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:26,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:26,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:52:26,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:26,698 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:52:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027651477] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:26,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:52:26,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 18:52:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289744323] [2025-02-06 18:52:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:26,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:52:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:26,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:52:26,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:52:26,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-02-06 18:52:26,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:26,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:26,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-02-06 18:52:26,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:29,886 INFO L124 PetriNetUnfolderBase]: 37330/58505 cut-off events. [2025-02-06 18:52:29,886 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2025-02-06 18:52:29,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107345 conditions, 58505 events. 37330/58505 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475614 event pairs, 27934 based on Foata normal form. 1/51047 useless extension candidates. Maximal degree in co-relation 107318. Up to 47227 conditions per place. [2025-02-06 18:52:30,420 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 45 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2025-02-06 18:52:30,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 293 flow [2025-02-06 18:52:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:52:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:52:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2025-02-06 18:52:30,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2025-02-06 18:52:30,424 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 193 flow. Second operand 6 states and 245 transitions. [2025-02-06 18:52:30,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 293 flow [2025-02-06 18:52:30,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:52:30,429 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 200 flow [2025-02-06 18:52:30,429 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2025-02-06 18:52:30,430 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2025-02-06 18:52:30,431 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 200 flow [2025-02-06 18:52:30,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:30,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:30,432 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2025-02-06 18:52:30,440 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 [2025-02-06 18:52:30,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:30,636 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:52:30,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:30,637 INFO L85 PathProgramCache]: Analyzing trace with hash 50748378, now seen corresponding path program 1 times [2025-02-06 18:52:30,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:30,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162665499] [2025-02-06 18:52:30,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:30,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:30,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:52:30,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:52:30,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:30,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:30,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:30,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162665499] [2025-02-06 18:52:30,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162665499] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:30,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846718225] [2025-02-06 18:52:30,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:30,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:30,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:30,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:52:30,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:52:30,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:52:30,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:52:30,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:30,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:30,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:52:30,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:30,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:30,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846718225] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:30,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:30,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 18:52:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361304329] [2025-02-06 18:52:30,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:30,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 18:52:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:30,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 18:52:30,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 18:52:30,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-02-06 18:52:30,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 200 flow. Second operand has 12 states, 12 states have (on average 33.25) internal successors, (399), 12 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:30,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:30,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-02-06 18:52:30,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:33,792 INFO L124 PetriNetUnfolderBase]: 37333/58517 cut-off events. [2025-02-06 18:52:33,793 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2025-02-06 18:52:33,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107389 conditions, 58517 events. 37333/58517 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 2084. Compared 475621 event pairs, 27934 based on Foata normal form. 3/51059 useless extension candidates. Maximal degree in co-relation 107319. Up to 47234 conditions per place. [2025-02-06 18:52:34,102 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 48 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2025-02-06 18:52:34,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 376 flow [2025-02-06 18:52:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:52:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:52:34,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 384 transitions. [2025-02-06 18:52:34,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2025-02-06 18:52:34,106 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 200 flow. Second operand 10 states and 384 transitions. [2025-02-06 18:52:34,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 376 flow [2025-02-06 18:52:34,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 330 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-02-06 18:52:34,110 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 252 flow [2025-02-06 18:52:34,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2025-02-06 18:52:34,111 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2025-02-06 18:52:34,111 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 252 flow [2025-02-06 18:52:34,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.25) internal successors, (399), 12 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:34,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:34,111 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:34,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 18:52:34,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:34,312 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:52:34,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2142795597, now seen corresponding path program 1 times [2025-02-06 18:52:34,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:34,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491329888] [2025-02-06 18:52:34,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:34,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:34,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:52:34,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:52:34,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:34,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:34,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:34,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:34,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491329888] [2025-02-06 18:52:34,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491329888] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:34,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:34,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:52:34,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473497354] [2025-02-06 18:52:34,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:34,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:34,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:34,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:34,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:52:34,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-02-06 18:52:34,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:34,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:34,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-02-06 18:52:34,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:36,950 INFO L124 PetriNetUnfolderBase]: 35048/51511 cut-off events. [2025-02-06 18:52:36,951 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2025-02-06 18:52:37,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97437 conditions, 51511 events. 35048/51511 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 1747. Compared 373348 event pairs, 14967 based on Foata normal form. 0/46767 useless extension candidates. Maximal degree in co-relation 97403. Up to 26562 conditions per place. [2025-02-06 18:52:37,279 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 110 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2025-02-06 18:52:37,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 142 transitions, 592 flow [2025-02-06 18:52:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:52:37,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:52:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2025-02-06 18:52:37,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-02-06 18:52:37,281 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 252 flow. Second operand 4 states and 238 transitions. [2025-02-06 18:52:37,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 142 transitions, 592 flow [2025-02-06 18:52:37,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 581 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:37,287 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 245 flow [2025-02-06 18:52:37,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2025-02-06 18:52:37,288 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 8 predicate places. [2025-02-06 18:52:37,288 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 245 flow [2025-02-06 18:52:37,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:37,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:37,289 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:37,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:52:37,289 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:52:37,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:37,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2142795598, now seen corresponding path program 1 times [2025-02-06 18:52:37,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615364215] [2025-02-06 18:52:37,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:37,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:37,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:52:37,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:52:37,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:37,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:37,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:37,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615364215] [2025-02-06 18:52:37,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615364215] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:37,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:37,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:52:37,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205995163] [2025-02-06 18:52:37,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:37,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:52:37,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:37,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:52:37,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:52:37,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-02-06 18:52:37,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 245 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:37,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:37,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-02-06 18:52:37,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:39,992 INFO L124 PetriNetUnfolderBase]: 33196/52285 cut-off events. [2025-02-06 18:52:39,992 INFO L125 PetriNetUnfolderBase]: For 3167/3167 co-relation queries the response was YES. [2025-02-06 18:52:40,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98951 conditions, 52285 events. 33196/52285 cut-off events. For 3167/3167 co-relation queries the response was YES. Maximal size of possible extension queue 1859. Compared 422068 event pairs, 24690 based on Foata normal form. 1/47432 useless extension candidates. Maximal degree in co-relation 98920. Up to 42015 conditions per place. [2025-02-06 18:52:40,320 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 56 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2025-02-06 18:52:40,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 358 flow [2025-02-06 18:52:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:52:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:52:40,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2025-02-06 18:52:40,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-02-06 18:52:40,321 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 245 flow. Second operand 3 states and 152 transitions. [2025-02-06 18:52:40,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 358 flow [2025-02-06 18:52:40,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 352 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:52:40,328 INFO L231 Difference]: Finished difference. Result has 91 places, 87 transitions, 240 flow [2025-02-06 18:52:40,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=91, PETRI_TRANSITIONS=87} [2025-02-06 18:52:40,328 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 7 predicate places. [2025-02-06 18:52:40,329 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 87 transitions, 240 flow [2025-02-06 18:52:40,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:40,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:40,329 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:40,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:52:40,329 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:52:40,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:40,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1293543204, now seen corresponding path program 1 times [2025-02-06 18:52:40,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:40,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383081123] [2025-02-06 18:52:40,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:40,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:40,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:52:40,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:52:40,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:40,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:40,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:40,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383081123] [2025-02-06 18:52:40,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383081123] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:40,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381177154] [2025-02-06 18:52:40,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:40,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:40,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:40,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:52:40,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:52:40,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:52:40,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:52:40,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:40,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:40,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 18:52:40,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:40,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 18:52:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:40,901 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:40,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-06 18:52:40,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 18:52:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:52:41,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381177154] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:41,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:41,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2025-02-06 18:52:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114354667] [2025-02-06 18:52:41,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:41,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 18:52:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:41,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 18:52:41,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-02-06 18:52:41,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 84 [2025-02-06 18:52:41,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 87 transitions, 240 flow. Second operand has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 13 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:41,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:41,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 84 [2025-02-06 18:52:41,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:45,550 INFO L124 PetriNetUnfolderBase]: 60378/87480 cut-off events. [2025-02-06 18:52:45,550 INFO L125 PetriNetUnfolderBase]: For 628/628 co-relation queries the response was YES. [2025-02-06 18:52:45,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166102 conditions, 87480 events. 60378/87480 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 2403. Compared 644917 event pairs, 19296 based on Foata normal form. 0/81572 useless extension candidates. Maximal degree in co-relation 166078. Up to 34221 conditions per place. [2025-02-06 18:52:46,260 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 131 selfloop transitions, 14 changer transitions 0/174 dead transitions. [2025-02-06 18:52:46,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 174 transitions, 716 flow [2025-02-06 18:52:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 18:52:46,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 18:52:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 443 transitions. [2025-02-06 18:52:46,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5859788359788359 [2025-02-06 18:52:46,262 INFO L175 Difference]: Start difference. First operand has 91 places, 87 transitions, 240 flow. Second operand 9 states and 443 transitions. [2025-02-06 18:52:46,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 174 transitions, 716 flow [2025-02-06 18:52:46,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 174 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:52:46,266 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 300 flow [2025-02-06 18:52:46,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2025-02-06 18:52:46,266 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 16 predicate places. [2025-02-06 18:52:46,266 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 300 flow [2025-02-06 18:52:46,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 36.46153846153846) internal successors, (474), 13 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:46,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:46,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:52:46,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:52:46,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:46,468 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:52:46,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1344475851, now seen corresponding path program 1 times [2025-02-06 18:52:46,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:46,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073444720] [2025-02-06 18:52:46,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:52:46,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:46,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 18:52:46,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 18:52:46,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:52:46,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:52:46,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:46,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073444720] [2025-02-06 18:52:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073444720] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:52:46,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:52:46,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:52:46,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622361062] [2025-02-06 18:52:46,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:52:46,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:52:46,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:46,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:52:46,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:52:46,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-02-06 18:52:46,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:46,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:46,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-02-06 18:52:46,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:52:54,338 INFO L124 PetriNetUnfolderBase]: 97966/146656 cut-off events. [2025-02-06 18:52:54,338 INFO L125 PetriNetUnfolderBase]: For 46354/46354 co-relation queries the response was YES. [2025-02-06 18:52:54,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305959 conditions, 146656 events. 97966/146656 cut-off events. For 46354/46354 co-relation queries the response was YES. Maximal size of possible extension queue 4119. Compared 1216524 event pairs, 11073 based on Foata normal form. 2198/136984 useless extension candidates. Maximal degree in co-relation 305922. Up to 61986 conditions per place. [2025-02-06 18:52:55,231 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 156 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2025-02-06 18:52:55,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 188 transitions, 930 flow [2025-02-06 18:52:55,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:52:55,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:52:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 292 transitions. [2025-02-06 18:52:55,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6952380952380952 [2025-02-06 18:52:55,233 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 300 flow. Second operand 5 states and 292 transitions. [2025-02-06 18:52:55,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 188 transitions, 930 flow [2025-02-06 18:52:55,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 188 transitions, 920 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:52:55,256 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 324 flow [2025-02-06 18:52:55,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2025-02-06 18:52:55,257 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2025-02-06 18:52:55,257 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 324 flow [2025-02-06 18:52:55,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:55,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:52:55,257 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2025-02-06 18:52:55,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:52:55,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2025-02-06 18:52:55,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:52:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1026340556, now seen corresponding path program 2 times [2025-02-06 18:52:55,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:52:55,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411159618] [2025-02-06 18:52:55,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:55,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:52:55,267 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 18:52:55,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 18 statements. [2025-02-06 18:52:55,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:52:55,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:52:55,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:52:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411159618] [2025-02-06 18:52:55,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411159618] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:52:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422783597] [2025-02-06 18:52:55,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:52:55,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:52:55,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:52:55,321 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:52:55,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:52:55,378 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 18:52:55,387 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 18 statements. [2025-02-06 18:52:55,387 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:52:55,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:52:55,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 18:52:55,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:52:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:52:55,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:52:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 18:52:55,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422783597] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:52:55,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:52:55,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2025-02-06 18:52:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258740106] [2025-02-06 18:52:55,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:52:55,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:52:55,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:52:55,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:52:55,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:52:55,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 84 [2025-02-06 18:52:55,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:52:55,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:52:55,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 84 [2025-02-06 18:52:55,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand