./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i --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/goblint-regression/06-symbeq_23-idxsense_nr.i -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 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:43:11,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:43:11,088 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:43:11,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:43:11,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:43:11,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:43:11,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:43:11,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:43:11,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:43:11,119 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:43:11,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:43:11,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:43:11,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:43:11,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:43:11,121 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:43:11,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:43:11,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:43:11,121 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:43:11,122 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:43:11,123 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:43:11,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:43:11,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:43:11,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:43:11,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:43:11,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:43:11,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:43:11,124 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:43:11,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:43:11,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:43:11,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:43:11,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:43:11,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:43:11,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:43:11,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:43:11,124 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 -> 9205365dcda04af07212d180b1c6367c5de79b6e0d2e09ec11b949fed58626f5 [2025-02-06 18:43:11,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:43:11,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:43:11,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:43:11,363 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:43:11,364 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:43:11,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2025-02-06 18:43:12,512 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6b04ab78d/9998526b4e894d9cba28df52f04d35e7/FLAG44f86ce4a [2025-02-06 18:43:12,771 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:43:12,771 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_23-idxsense_nr.i [2025-02-06 18:43:12,785 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6b04ab78d/9998526b4e894d9cba28df52f04d35e7/FLAG44f86ce4a [2025-02-06 18:43:12,796 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6b04ab78d/9998526b4e894d9cba28df52f04d35e7 [2025-02-06 18:43:12,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:43:12,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:43:12,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:43:12,801 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:43:12,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:43:12,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:43:12" (1/1) ... [2025-02-06 18:43:12,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea24f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:12, skipping insertion in model container [2025-02-06 18:43:12,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:43:12" (1/1) ... [2025-02-06 18:43:12,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:43:13,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:43:13,026 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:43:13,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:43:13,080 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:43:13,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13 WrapperNode [2025-02-06 18:43:13,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:43:13,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:43:13,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:43:13,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:43:13,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,095 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,112 INFO L138 Inliner]: procedures = 162, calls = 77, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 112 [2025-02-06 18:43:13,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:43:13,113 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:43:13,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:43:13,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:43:13,122 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,141 INFO L175 MemorySlicer]: Split 66 memory accesses to 2 slices as follows [16, 50]. 76 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [10, 50]. The 3 writes are split as follows [3, 0]. [2025-02-06 18:43:13,141 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,150 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,150 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,155 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:43:13,156 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:43:13,156 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:43:13,156 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:43:13,157 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (1/1) ... [2025-02-06 18:43:13,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:43:13,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:13,182 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 18:43:13,184 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 18:43:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:43:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:43:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:43:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:43:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:43:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:43:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 18:43:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 18:43:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:43:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:43:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:43:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:43:13,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:43:13,202 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 18:43:13,303 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:43:13,304 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:43:13,489 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:43:13,489 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:43:13,722 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:43:13,722 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:43:13,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:13 BoogieIcfgContainer [2025-02-06 18:43:13,724 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:43:13,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:43:13,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:43:13,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:43:13,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:43:12" (1/3) ... [2025-02-06 18:43:13,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77136bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:43:13, skipping insertion in model container [2025-02-06 18:43:13,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:13" (2/3) ... [2025-02-06 18:43:13,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77136bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:43:13, skipping insertion in model container [2025-02-06 18:43:13,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:13" (3/3) ... [2025-02-06 18:43:13,732 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_23-idxsense_nr.i [2025-02-06 18:43:13,744 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:43:13,746 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_23-idxsense_nr.i that has 2 procedures, 35 locations, 1 initial locations, 1 loop locations, and 8 error locations. [2025-02-06 18:43:13,747 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:43:13,779 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:43:13,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 74 flow [2025-02-06 18:43:13,830 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2025-02-06 18:43:13,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:13,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2025-02-06 18:43:13,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 74 flow [2025-02-06 18:43:13,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 71 flow [2025-02-06 18:43:13,845 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:43:13,855 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;@3bff2dac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:43:13,857 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-02-06 18:43:13,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:43:13,861 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:43:13,862 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:13,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:13,862 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:43:13,863 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:13,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash 299346, now seen corresponding path program 1 times [2025-02-06 18:43:13,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:13,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000994399] [2025-02-06 18:43:13,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:13,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:13,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:43:13,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:43:13,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:13,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:14,167 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 18:43:14,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:14,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000994399] [2025-02-06 18:43:14,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000994399] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:14,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:14,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:43:14,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603397263] [2025-02-06 18:43:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:14,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:43:14,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:14,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:43:14,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:43:14,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-06 18:43:14,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 18:43:14,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:14,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-06 18:43:14,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:14,300 INFO L124 PetriNetUnfolderBase]: 51/170 cut-off events. [2025-02-06 18:43:14,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:14,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 170 events. 51/170 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 634 event pairs, 50 based on Foata normal form. 1/153 useless extension candidates. Maximal degree in co-relation 274. Up to 123 conditions per place. [2025-02-06 18:43:14,302 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 21 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2025-02-06 18:43:14,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 123 flow [2025-02-06 18:43:14,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:43:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:43:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2025-02-06 18:43:14,310 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2025-02-06 18:43:14,311 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 71 flow. Second operand 4 states and 79 transitions. [2025-02-06 18:43:14,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 123 flow [2025-02-06 18:43:14,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:43:14,315 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 94 flow [2025-02-06 18:43:14,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2025-02-06 18:43:14,319 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2025-02-06 18:43:14,319 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 94 flow [2025-02-06 18:43:14,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 18:43:14,319 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:14,320 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:43:14,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:43:14,320 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:14,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash 328126663, now seen corresponding path program 1 times [2025-02-06 18:43:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:14,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233383407] [2025-02-06 18:43:14,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:14,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:14,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:43:14,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:43:14,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:14,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:14,403 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 18:43:14,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:14,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233383407] [2025-02-06 18:43:14,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233383407] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:14,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174974952] [2025-02-06 18:43:14,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:14,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:14,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:14,406 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 18:43:14,407 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 18:43:14,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:43:14,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:43:14,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:14,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:14,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:43:14,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:14,504 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 18:43:14,504 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:43:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174974952] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:14,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:43:14,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:43:14,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889382153] [2025-02-06 18:43:14,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:14,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:14,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:14,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:14,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:43:14,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-06 18:43:14,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 94 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:14,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:14,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-06 18:43:14,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:14,590 INFO L124 PetriNetUnfolderBase]: 51/169 cut-off events. [2025-02-06 18:43:14,591 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:43:14,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 169 events. 51/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 625 event pairs, 50 based on Foata normal form. 1/152 useless extension candidates. Maximal degree in co-relation 291. Up to 118 conditions per place. [2025-02-06 18:43:14,592 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 17 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2025-02-06 18:43:14,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 136 flow [2025-02-06 18:43:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:14,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2025-02-06 18:43:14,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2025-02-06 18:43:14,593 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 94 flow. Second operand 6 states and 102 transitions. [2025-02-06 18:43:14,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 136 flow [2025-02-06 18:43:14,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:43:14,594 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 100 flow [2025-02-06 18:43:14,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2025-02-06 18:43:14,595 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2025-02-06 18:43:14,595 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 100 flow [2025-02-06 18:43:14,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:14,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:14,595 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:43:14,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 18:43:14,800 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 18:43:14,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:14,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1581992205, now seen corresponding path program 1 times [2025-02-06 18:43:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:14,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591471679] [2025-02-06 18:43:14,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:14,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:14,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:43:14,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:43:14,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:14,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:43:14,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:14,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591471679] [2025-02-06 18:43:14,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591471679] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:14,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:14,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:43:14,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569548551] [2025-02-06 18:43:14,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:14,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:43:14,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:14,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:43:14,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:43:14,883 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-06 18:43:14,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 18:43:14,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:14,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-06 18:43:14,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:14,954 INFO L124 PetriNetUnfolderBase]: 51/168 cut-off events. [2025-02-06 18:43:14,955 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 18:43:14,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 168 events. 51/168 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 623 event pairs, 50 based on Foata normal form. 1/152 useless extension candidates. Maximal degree in co-relation 287. Up to 121 conditions per place. [2025-02-06 18:43:14,956 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2025-02-06 18:43:14,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 140 flow [2025-02-06 18:43:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:43:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:43:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2025-02-06 18:43:14,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-02-06 18:43:14,958 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 100 flow. Second operand 3 states and 60 transitions. [2025-02-06 18:43:14,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 140 flow [2025-02-06 18:43:14,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 118 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:43:14,959 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 82 flow [2025-02-06 18:43:14,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2025-02-06 18:43:14,960 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2025-02-06 18:43:14,960 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 82 flow [2025-02-06 18:43:14,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 18:43:14,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:14,960 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:14,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:43:14,960 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:14,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash 494804274, now seen corresponding path program 1 times [2025-02-06 18:43:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:14,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680387611] [2025-02-06 18:43:14,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:14,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:14,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:43:14,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:43:14,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:14,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:15,087 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 18:43:15,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:15,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680387611] [2025-02-06 18:43:15,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680387611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:15,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621155666] [2025-02-06 18:43:15,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:15,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:15,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:15,091 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 18:43:15,092 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 18:43:15,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:43:15,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:43:15,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:15,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:15,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:43:15,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:15,174 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 18:43:15,174 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:15,201 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 18:43:15,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621155666] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:15,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:15,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:43:15,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300347062] [2025-02-06 18:43:15,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:15,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:15,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:15,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:15,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:15,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-06 18:43:15,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 82 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 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 18:43:15,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:15,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-06 18:43:15,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:15,312 INFO L124 PetriNetUnfolderBase]: 51/172 cut-off events. [2025-02-06 18:43:15,312 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-02-06 18:43:15,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 172 events. 51/172 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 620 event pairs, 50 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 280. Up to 119 conditions per place. [2025-02-06 18:43:15,313 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 18 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2025-02-06 18:43:15,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 147 flow [2025-02-06 18:43:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:43:15,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:43:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2025-02-06 18:43:15,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2025-02-06 18:43:15,315 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 82 flow. Second operand 7 states and 118 transitions. [2025-02-06 18:43:15,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 147 flow [2025-02-06 18:43:15,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 133 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:15,316 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 108 flow [2025-02-06 18:43:15,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2025-02-06 18:43:15,316 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2025-02-06 18:43:15,316 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 108 flow [2025-02-06 18:43:15,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 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 18:43:15,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:15,316 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:15,322 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 18:43:15,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:15,517 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:15,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1036668590, now seen corresponding path program 2 times [2025-02-06 18:43:15,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:15,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999772456] [2025-02-06 18:43:15,518 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:15,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:15,534 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:43:15,538 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 16 statements. [2025-02-06 18:43:15,538 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:15,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:43:15,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:15,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999772456] [2025-02-06 18:43:15,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999772456] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:15,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:15,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:43:15,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920125160] [2025-02-06 18:43:15,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:15,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:43:15,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:15,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:43:15,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:43:15,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-06 18:43:15,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 18:43:15,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:15,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-06 18:43:15,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:15,673 INFO L124 PetriNetUnfolderBase]: 51/168 cut-off events. [2025-02-06 18:43:15,673 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-06 18:43:15,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 168 events. 51/168 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 579 event pairs, 10 based on Foata normal form. 6/164 useless extension candidates. Maximal degree in co-relation 278. Up to 78 conditions per place. [2025-02-06 18:43:15,675 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 32 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2025-02-06 18:43:15,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 194 flow [2025-02-06 18:43:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:43:15,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:43:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2025-02-06 18:43:15,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-02-06 18:43:15,677 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 108 flow. Second operand 4 states and 84 transitions. [2025-02-06 18:43:15,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 194 flow [2025-02-06 18:43:15,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:15,679 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 106 flow [2025-02-06 18:43:15,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2025-02-06 18:43:15,679 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2025-02-06 18:43:15,679 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 106 flow [2025-02-06 18:43:15,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 18:43:15,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:15,680 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:15,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:43:15,680 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:15,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:15,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1036431147, now seen corresponding path program 1 times [2025-02-06 18:43:15,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:15,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160945908] [2025-02-06 18:43:15,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:15,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:15,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:43:15,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:43:15,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:15,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:43:15,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160945908] [2025-02-06 18:43:15,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160945908] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:15,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:15,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:43:15,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025943130] [2025-02-06 18:43:15,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:15,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:43:15,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:15,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:43:15,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:43:15,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-06 18:43:15,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 18:43:15,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:15,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-06 18:43:15,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:15,864 INFO L124 PetriNetUnfolderBase]: 57/165 cut-off events. [2025-02-06 18:43:15,864 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-02-06 18:43:15,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 165 events. 57/165 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 542 event pairs, 19 based on Foata normal form. 11/170 useless extension candidates. Maximal degree in co-relation 302. Up to 91 conditions per place. [2025-02-06 18:43:15,865 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 39 selfloop transitions, 4 changer transitions 6/57 dead transitions. [2025-02-06 18:43:15,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 57 transitions, 256 flow [2025-02-06 18:43:15,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:43:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:43:15,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2025-02-06 18:43:15,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2025-02-06 18:43:15,867 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 106 flow. Second operand 5 states and 113 transitions. [2025-02-06 18:43:15,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 57 transitions, 256 flow [2025-02-06 18:43:15,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:15,868 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 125 flow [2025-02-06 18:43:15,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2025-02-06 18:43:15,869 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2025-02-06 18:43:15,869 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 125 flow [2025-02-06 18:43:15,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 18:43:15,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:15,869 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:15,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:43:15,870 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:15,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:15,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1200335618, now seen corresponding path program 1 times [2025-02-06 18:43:15,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:15,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936300342] [2025-02-06 18:43:15,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:15,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:15,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:43:15,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:43:15,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:15,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:16,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:16,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936300342] [2025-02-06 18:43:16,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936300342] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:16,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523263] [2025-02-06 18:43:16,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:16,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:16,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:16,026 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 18:43:16,027 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 18:43:16,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 18:43:16,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 18:43:16,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:16,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:16,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:43:16,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:16,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:16,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523263] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:16,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:16,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-06 18:43:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951240409] [2025-02-06 18:43:16,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:16,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:43:16,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:16,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:43:16,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:43:16,206 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-06 18:43:16,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 125 flow. Second operand has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 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 18:43:16,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:16,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-06 18:43:16,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:16,326 INFO L124 PetriNetUnfolderBase]: 41/160 cut-off events. [2025-02-06 18:43:16,327 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2025-02-06 18:43:16,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 160 events. 41/160 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 502 event pairs, 40 based on Foata normal form. 4/155 useless extension candidates. Maximal degree in co-relation 340. Up to 100 conditions per place. [2025-02-06 18:43:16,328 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 19 selfloop transitions, 15 changer transitions 0/44 dead transitions. [2025-02-06 18:43:16,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 44 transitions, 241 flow [2025-02-06 18:43:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:43:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:43:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2025-02-06 18:43:16,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4419047619047619 [2025-02-06 18:43:16,329 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 125 flow. Second operand 15 states and 232 transitions. [2025-02-06 18:43:16,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 44 transitions, 241 flow [2025-02-06 18:43:16,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 44 transitions, 234 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:16,330 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 215 flow [2025-02-06 18:43:16,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=215, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2025-02-06 18:43:16,331 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 26 predicate places. [2025-02-06 18:43:16,331 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 215 flow [2025-02-06 18:43:16,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 14.5) internal successors, (261), 18 states have internal predecessors, (261), 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 18:43:16,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:16,331 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:16,338 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 18:43:16,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:16,534 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:16,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash -592651454, now seen corresponding path program 2 times [2025-02-06 18:43:16,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:16,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134081385] [2025-02-06 18:43:16,536 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:16,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:16,554 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-06 18:43:16,562 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 34 statements. [2025-02-06 18:43:16,562 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:16,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 18:43:16,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:16,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134081385] [2025-02-06 18:43:16,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134081385] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:16,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:16,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:43:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436162364] [2025-02-06 18:43:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:16,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:43:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:16,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:43:16,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:43:16,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-06 18:43:16,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 18:43:16,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:16,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-06 18:43:16,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:16,728 INFO L124 PetriNetUnfolderBase]: 44/159 cut-off events. [2025-02-06 18:43:16,728 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2025-02-06 18:43:16,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 159 events. 44/159 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 485 event pairs, 20 based on Foata normal form. 12/169 useless extension candidates. Maximal degree in co-relation 289. Up to 69 conditions per place. [2025-02-06 18:43:16,730 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 41 selfloop transitions, 4 changer transitions 4/57 dead transitions. [2025-02-06 18:43:16,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 345 flow [2025-02-06 18:43:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:43:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:43:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2025-02-06 18:43:16,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-02-06 18:43:16,731 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 215 flow. Second operand 5 states and 105 transitions. [2025-02-06 18:43:16,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 345 flow [2025-02-06 18:43:16,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 335 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:43:16,736 INFO L231 Difference]: Finished difference. Result has 66 places, 45 transitions, 230 flow [2025-02-06 18:43:16,736 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=66, PETRI_TRANSITIONS=45} [2025-02-06 18:43:16,736 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2025-02-06 18:43:16,736 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 45 transitions, 230 flow [2025-02-06 18:43:16,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 18:43:16,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:16,737 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:16,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:43:16,737 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:16,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash 928199057, now seen corresponding path program 1 times [2025-02-06 18:43:16,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:16,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275307205] [2025-02-06 18:43:16,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:16,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:16,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 18:43:16,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:43:16,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:16,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:16,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:16,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275307205] [2025-02-06 18:43:16,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275307205] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:16,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149098815] [2025-02-06 18:43:16,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:16,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:16,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:16,998 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 18:43:17,000 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 18:43:17,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 18:43:17,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 18:43:17,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:17,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:17,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 18:43:17,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:17,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:17,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149098815] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:17,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:17,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-06 18:43:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669097155] [2025-02-06 18:43:17,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:17,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:43:17,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:17,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:43:17,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:43:17,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2025-02-06 18:43:17,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 45 transitions, 230 flow. Second operand has 23 states, 23 states have (on average 14.565217391304348) internal successors, (335), 23 states have internal predecessors, (335), 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 18:43:17,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:17,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2025-02-06 18:43:17,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:17,498 INFO L124 PetriNetUnfolderBase]: 40/162 cut-off events. [2025-02-06 18:43:17,499 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2025-02-06 18:43:17,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 162 events. 40/162 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 461 event pairs, 39 based on Foata normal form. 3/162 useless extension candidates. Maximal degree in co-relation 410. Up to 99 conditions per place. [2025-02-06 18:43:17,500 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 20 selfloop transitions, 21 changer transitions 0/51 dead transitions. [2025-02-06 18:43:17,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 51 transitions, 366 flow [2025-02-06 18:43:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 18:43:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 18:43:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 315 transitions. [2025-02-06 18:43:17,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-02-06 18:43:17,501 INFO L175 Difference]: Start difference. First operand has 66 places, 45 transitions, 230 flow. Second operand 21 states and 315 transitions. [2025-02-06 18:43:17,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 51 transitions, 366 flow [2025-02-06 18:43:17,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 51 transitions, 359 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:17,504 INFO L231 Difference]: Finished difference. Result has 86 places, 51 transitions, 334 flow [2025-02-06 18:43:17,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=334, PETRI_PLACES=86, PETRI_TRANSITIONS=51} [2025-02-06 18:43:17,504 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 49 predicate places. [2025-02-06 18:43:17,504 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 51 transitions, 334 flow [2025-02-06 18:43:17,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.565217391304348) internal successors, (335), 23 states have internal predecessors, (335), 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 18:43:17,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:17,505 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:17,511 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 [2025-02-06 18:43:17,709 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 [2025-02-06 18:43:17,709 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:17,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:17,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1311698688, now seen corresponding path program 2 times [2025-02-06 18:43:17,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:17,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256200927] [2025-02-06 18:43:17,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:17,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:17,733 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-06 18:43:17,740 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 48 statements. [2025-02-06 18:43:17,740 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:17,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256200927] [2025-02-06 18:43:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256200927] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:17,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:17,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:43:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153681018] [2025-02-06 18:43:17,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:17,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:17,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:17,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:17,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:43:17,899 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2025-02-06 18:43:17,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 51 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 18:43:17,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:17,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2025-02-06 18:43:17,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:18,032 INFO L124 PetriNetUnfolderBase]: 46/165 cut-off events. [2025-02-06 18:43:18,032 INFO L125 PetriNetUnfolderBase]: For 210/211 co-relation queries the response was YES. [2025-02-06 18:43:18,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 165 events. 46/165 cut-off events. For 210/211 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 454 event pairs, 13 based on Foata normal form. 4/168 useless extension candidates. Maximal degree in co-relation 358. Up to 46 conditions per place. [2025-02-06 18:43:18,034 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 54 selfloop transitions, 5 changer transitions 1/66 dead transitions. [2025-02-06 18:43:18,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 66 transitions, 486 flow [2025-02-06 18:43:18,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:18,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-02-06 18:43:18,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2025-02-06 18:43:18,035 INFO L175 Difference]: Start difference. First operand has 86 places, 51 transitions, 334 flow. Second operand 6 states and 108 transitions. [2025-02-06 18:43:18,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 66 transitions, 486 flow [2025-02-06 18:43:18,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 66 transitions, 443 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-02-06 18:43:18,037 INFO L231 Difference]: Finished difference. Result has 77 places, 50 transitions, 297 flow [2025-02-06 18:43:18,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=77, PETRI_TRANSITIONS=50} [2025-02-06 18:43:18,038 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2025-02-06 18:43:18,038 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 50 transitions, 297 flow [2025-02-06 18:43:18,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 18:43:18,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:18,038 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:18,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:43:18,038 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:18,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:18,041 INFO L85 PathProgramCache]: Analyzing trace with hash -840952080, now seen corresponding path program 1 times [2025-02-06 18:43:18,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:18,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101788550] [2025-02-06 18:43:18,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:18,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:18,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 18:43:18,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 18:43:18,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:18,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:18,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101788550] [2025-02-06 18:43:18,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101788550] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:18,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:18,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:43:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381249167] [2025-02-06 18:43:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:18,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:43:18,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:18,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:43:18,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:43:18,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:43:18,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 50 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 18:43:18,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:18,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:43:18,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:18,288 INFO L124 PetriNetUnfolderBase]: 48/165 cut-off events. [2025-02-06 18:43:18,288 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2025-02-06 18:43:18,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 165 events. 48/165 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 442 event pairs, 27 based on Foata normal form. 3/166 useless extension candidates. Maximal degree in co-relation 363. Up to 91 conditions per place. [2025-02-06 18:43:18,289 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 48 selfloop transitions, 7 changer transitions 3/63 dead transitions. [2025-02-06 18:43:18,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 63 transitions, 447 flow [2025-02-06 18:43:18,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2025-02-06 18:43:18,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-02-06 18:43:18,289 INFO L175 Difference]: Start difference. First operand has 77 places, 50 transitions, 297 flow. Second operand 6 states and 98 transitions. [2025-02-06 18:43:18,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 63 transitions, 447 flow [2025-02-06 18:43:18,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 63 transitions, 432 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:43:18,295 INFO L231 Difference]: Finished difference. Result has 77 places, 49 transitions, 295 flow [2025-02-06 18:43:18,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=77, PETRI_TRANSITIONS=49} [2025-02-06 18:43:18,296 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2025-02-06 18:43:18,296 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 49 transitions, 295 flow [2025-02-06 18:43:18,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 18:43:18,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:18,296 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:18,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:43:18,296 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:18,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2007953413, now seen corresponding path program 1 times [2025-02-06 18:43:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:18,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913222141] [2025-02-06 18:43:18,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:18,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:18,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 18:43:18,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 18:43:18,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:18,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:18,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:18,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913222141] [2025-02-06 18:43:18,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913222141] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:18,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:18,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:43:18,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283721167] [2025-02-06 18:43:18,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:18,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:18,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:18,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:18,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:43:18,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2025-02-06 18:43:18,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 49 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 18:43:18,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:18,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2025-02-06 18:43:18,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:18,569 INFO L124 PetriNetUnfolderBase]: 41/152 cut-off events. [2025-02-06 18:43:18,569 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2025-02-06 18:43:18,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 152 events. 41/152 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 398 event pairs, 10 based on Foata normal form. 3/154 useless extension candidates. Maximal degree in co-relation 355. Up to 43 conditions per place. [2025-02-06 18:43:18,570 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 36 selfloop transitions, 3 changer transitions 19/64 dead transitions. [2025-02-06 18:43:18,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 64 transitions, 439 flow [2025-02-06 18:43:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:43:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:43:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2025-02-06 18:43:18,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4775510204081633 [2025-02-06 18:43:18,571 INFO L175 Difference]: Start difference. First operand has 77 places, 49 transitions, 295 flow. Second operand 7 states and 117 transitions. [2025-02-06 18:43:18,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 64 transitions, 439 flow [2025-02-06 18:43:18,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 64 transitions, 430 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:43:18,573 INFO L231 Difference]: Finished difference. Result has 77 places, 43 transitions, 265 flow [2025-02-06 18:43:18,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=265, PETRI_PLACES=77, PETRI_TRANSITIONS=43} [2025-02-06 18:43:18,574 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2025-02-06 18:43:18,574 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 43 transitions, 265 flow [2025-02-06 18:43:18,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 18:43:18,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:18,574 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:18,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:43:18,574 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2025-02-06 18:43:18,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:18,575 INFO L85 PathProgramCache]: Analyzing trace with hash -299710439, now seen corresponding path program 1 times [2025-02-06 18:43:18,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:18,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686812680] [2025-02-06 18:43:18,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:18,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:18,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 18:43:18,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 18:43:18,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:18,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:18,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:18,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686812680] [2025-02-06 18:43:18,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686812680] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:18,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:18,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:43:18,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042235654] [2025-02-06 18:43:18,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:18,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:18,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:18,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:18,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:43:18,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2025-02-06 18:43:18,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 43 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 18:43:18,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:18,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2025-02-06 18:43:18,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:18,807 INFO L124 PetriNetUnfolderBase]: 13/80 cut-off events. [2025-02-06 18:43:18,808 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2025-02-06 18:43:18,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 80 events. 13/80 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 6 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 236. Up to 43 conditions per place. [2025-02-06 18:43:18,808 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2025-02-06 18:43:18,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 46 transitions, 349 flow [2025-02-06 18:43:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2025-02-06 18:43:18,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2025-02-06 18:43:18,809 INFO L175 Difference]: Start difference. First operand has 77 places, 43 transitions, 265 flow. Second operand 6 states and 88 transitions. [2025-02-06 18:43:18,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 46 transitions, 349 flow [2025-02-06 18:43:18,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 46 transitions, 337 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 18:43:18,810 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2025-02-06 18:43:18,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2025-02-06 18:43:18,811 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 29 predicate places. [2025-02-06 18:43:18,811 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2025-02-06 18:43:18,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 18:43:18,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2025-02-06 18:43:18,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2025-02-06 18:43:18,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2025-02-06 18:43:18,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2025-02-06 18:43:18,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2025-02-06 18:43:18,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2025-02-06 18:43:18,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2025-02-06 18:43:18,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2025-02-06 18:43:18,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2025-02-06 18:43:18,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2025-02-06 18:43:18,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2025-02-06 18:43:18,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:43:18,814 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:18,821 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 18:43:18,821 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 18:43:18,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 06:43:18 BasicIcfg [2025-02-06 18:43:18,825 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 18:43:18,826 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 18:43:18,826 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 18:43:18,826 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 18:43:18,826 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:13" (3/4) ... [2025-02-06 18:43:18,830 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 18:43:18,832 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-02-06 18:43:18,835 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2025-02-06 18:43:18,835 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2025-02-06 18:43:18,835 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-06 18:43:18,835 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-06 18:43:18,835 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-06 18:43:18,835 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 18:43:18,898 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 18:43:18,899 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 18:43:18,899 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 18:43:18,899 INFO L158 Benchmark]: Toolchain (without parser) took 6099.90ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 108.8MB in the beginning and 301.9MB in the end (delta: -193.0MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2025-02-06 18:43:18,899 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 226.5MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:43:18,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.42ms. Allocated memory is still 142.6MB. Free memory was 108.8MB in the beginning and 87.7MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 18:43:18,900 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.33ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 85.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:43:18,900 INFO L158 Benchmark]: Boogie Preprocessor took 41.82ms. Allocated memory is still 142.6MB. Free memory was 85.8MB in the beginning and 83.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:43:18,900 INFO L158 Benchmark]: IcfgBuilder took 568.15ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 67.9MB in the end (delta: 15.9MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2025-02-06 18:43:18,900 INFO L158 Benchmark]: TraceAbstraction took 5100.10ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 67.2MB in the beginning and 305.6MB in the end (delta: -238.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:43:18,900 INFO L158 Benchmark]: Witness Printer took 72.99ms. Allocated memory is still 369.1MB. Free memory was 305.6MB in the beginning and 301.9MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:43:18,901 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 226.5MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.42ms. Allocated memory is still 142.6MB. Free memory was 108.8MB in the beginning and 87.7MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.33ms. Allocated memory is still 142.6MB. Free memory was 87.7MB in the beginning and 85.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.82ms. Allocated memory is still 142.6MB. Free memory was 85.8MB in the beginning and 83.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 568.15ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 67.9MB in the end (delta: 15.9MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5100.10ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 67.2MB in the beginning and 305.6MB in the end (delta: -238.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 72.99ms. Allocated memory is still 369.1MB. Free memory was 305.6MB in the beginning and 301.9MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 683]: 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 3 procedures, 46 locations, 11 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: 5.0s, OverallIterations: 13, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 312 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 263 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 111 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1289 IncrementalHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 20 mSDtfsCounter, 1289 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 120 SyntacticMatches, 11 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=334occurred in iteration=9, InterpolantAutomatonStates: 95, 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, 2.0s InterpolantComputationTime, 424 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 2301 SizeOfPredicates, 13 NumberOfNonLiveVariables, 871 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 679/930 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! [2025-02-06 18:43:18,926 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