./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.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_08-tricky_address3.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 a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:42:59,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:42:59,874 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:42:59,880 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:42:59,881 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:42:59,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:42:59,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:42:59,902 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:42:59,903 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:42:59,903 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:42:59,903 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:42:59,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:42:59,904 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:42:59,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:42:59,904 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:42:59,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:42:59,905 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:42:59,905 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:42:59,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:42:59,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:42:59,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:42:59,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:42:59,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:42:59,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:42:59,906 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:42:59,906 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:42:59,906 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:42:59,906 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:42:59,906 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:42:59,906 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:42:59,906 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:42:59,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:42:59,906 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:42:59,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:42:59,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:42:59,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:42:59,908 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 -> a812aad62102b8bb20af57f89ce6dbf7fb9ee1fa63f6f8ecf164ccf61d0713cb [2025-02-06 18:43:00,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:43:00,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:43:00,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:43:00,117 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:43:00,117 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:43:00,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2025-02-06 18:43:01,344 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/af4237b63/8fb5f4be28dc427dbce24380efeb44a7/FLAG482abad33 [2025-02-06 18:43:01,694 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:43:01,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_08-tricky_address3.i [2025-02-06 18:43:01,710 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/af4237b63/8fb5f4be28dc427dbce24380efeb44a7/FLAG482abad33 [2025-02-06 18:43:01,723 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/af4237b63/8fb5f4be28dc427dbce24380efeb44a7 [2025-02-06 18:43:01,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:43:01,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:43:01,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:43:01,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:43:01,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:43:01,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d59e520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01, skipping insertion in model container [2025-02-06 18:43:01,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,760 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:43:02,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:43:02,046 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:43:02,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:43:02,135 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:43:02,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02 WrapperNode [2025-02-06 18:43:02,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:43:02,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:43:02,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:43:02,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:43:02,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,162 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 135 [2025-02-06 18:43:02,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:43:02,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:43:02,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:43:02,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:43:02,168 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,170 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,182 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2025-02-06 18:43:02,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,190 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:43:02,199 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:43:02,199 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:43:02,199 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:43:02,200 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (1/1) ... [2025-02-06 18:43:02,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:43:02,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:02,222 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 18:43:02,227 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 18:43:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:43:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:43:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:43:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:43:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:43:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 18:43:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 18:43:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:43:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:43:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:43:02,240 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 18:43:02,329 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:43:02,330 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:43:02,520 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:43:02,521 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:43:02,837 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:43:02,837 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:43:02,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:02 BoogieIcfgContainer [2025-02-06 18:43:02,838 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:43:02,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:43:02,839 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:43:02,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:43:02,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:43:01" (1/3) ... [2025-02-06 18:43:02,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5af00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:43:02, skipping insertion in model container [2025-02-06 18:43:02,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:02" (2/3) ... [2025-02-06 18:43:02,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5af00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:43:02, skipping insertion in model container [2025-02-06 18:43:02,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:02" (3/3) ... [2025-02-06 18:43:02,847 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2025-02-06 18:43:02,860 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:43:02,864 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_08-tricky_address3.i that has 2 procedures, 31 locations, 1 initial locations, 1 loop locations, and 8 error locations. [2025-02-06 18:43:02,869 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:43:02,899 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:43:02,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 66 flow [2025-02-06 18:43:02,933 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2025-02-06 18:43:02,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:02,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2025-02-06 18:43:02,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 66 flow [2025-02-06 18:43:02,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 30 transitions, 63 flow [2025-02-06 18:43:02,942 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:43:02,949 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;@6c25b459, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:43:02,949 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-06 18:43:02,952 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:43:02,956 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:43:02,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:02,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:02,957 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:43:02,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:02,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:02,965 INFO L85 PathProgramCache]: Analyzing trace with hash 324556, now seen corresponding path program 1 times [2025-02-06 18:43:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:02,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742279802] [2025-02-06 18:43:02,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:02,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:03,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:43:03,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:43:03,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:03,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:03,208 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 18:43:03,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:03,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742279802] [2025-02-06 18:43:03,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742279802] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:03,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:03,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:43:03,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910659902] [2025-02-06 18:43:03,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:03,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:43:03,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:03,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:43:03,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:43:03,242 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:03,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 18:43:03,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:03,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:03,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:03,332 INFO L124 PetriNetUnfolderBase]: 43/144 cut-off events. [2025-02-06 18:43:03,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:03,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 144 events. 43/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 541 event pairs, 42 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 230. Up to 105 conditions per place. [2025-02-06 18:43:03,334 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 19 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2025-02-06 18:43:03,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 111 flow [2025-02-06 18:43:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:43:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:43:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-02-06 18:43:03,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2025-02-06 18:43:03,342 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 63 flow. Second operand 4 states and 69 transitions. [2025-02-06 18:43:03,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 111 flow [2025-02-06 18:43:03,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:43:03,346 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 86 flow [2025-02-06 18:43:03,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2025-02-06 18:43:03,349 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2025-02-06 18:43:03,349 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 86 flow [2025-02-06 18:43:03,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 18:43:03,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:03,350 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:43:03,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:43:03,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:03,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:03,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1079195476, now seen corresponding path program 1 times [2025-02-06 18:43:03,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:03,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825903775] [2025-02-06 18:43:03,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:03,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:03,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:43:03,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:43:03,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:03,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:03,433 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 18:43:03,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:03,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825903775] [2025-02-06 18:43:03,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825903775] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:03,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556531701] [2025-02-06 18:43:03,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:03,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:03,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:03,436 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 18:43:03,438 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 18:43:03,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:43:03,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:43:03,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:03,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:03,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:43:03,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:03,538 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 18:43:03,538 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:43:03,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556531701] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:03,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:43:03,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:43:03,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884345238] [2025-02-06 18:43:03,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:03,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:03,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:03,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:43:03,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:03,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 18:43:03,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:03,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:03,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:03,623 INFO L124 PetriNetUnfolderBase]: 43/143 cut-off events. [2025-02-06 18:43:03,624 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:43:03,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 143 events. 43/143 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 536 event pairs, 42 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 247. Up to 100 conditions per place. [2025-02-06 18:43:03,625 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 15 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2025-02-06 18:43:03,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 124 flow [2025-02-06 18:43:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2025-02-06 18:43:03,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2025-02-06 18:43:03,626 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 86 flow. Second operand 6 states and 88 transitions. [2025-02-06 18:43:03,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 124 flow [2025-02-06 18:43:03,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:43:03,648 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 92 flow [2025-02-06 18:43:03,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2025-02-06 18:43:03,649 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2025-02-06 18:43:03,649 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 92 flow [2025-02-06 18:43:03,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 18:43:03,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:03,649 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:43:03,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 18:43:03,850 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 18:43:03,850 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:03,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:03,851 INFO L85 PathProgramCache]: Analyzing trace with hash -904678329, now seen corresponding path program 1 times [2025-02-06 18:43:03,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:03,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495318916] [2025-02-06 18:43:03,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:03,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:03,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:43:03,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:43:03,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:03,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:03,903 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 18:43:03,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495318916] [2025-02-06 18:43:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495318916] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:03,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:03,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:43:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481151020] [2025-02-06 18:43:03,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:03,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:43:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:03,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:43:03,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:43:03,908 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:03,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 18:43:03,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:03,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:03,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:03,954 INFO L124 PetriNetUnfolderBase]: 43/142 cut-off events. [2025-02-06 18:43:03,954 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 18:43:03,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 142 events. 43/142 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 530 event pairs, 42 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 243. Up to 103 conditions per place. [2025-02-06 18:43:03,955 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 16 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2025-02-06 18:43:03,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 128 flow [2025-02-06 18:43:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:43:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:43:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-02-06 18:43:03,956 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2025-02-06 18:43:03,956 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 92 flow. Second operand 3 states and 52 transitions. [2025-02-06 18:43:03,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 128 flow [2025-02-06 18:43:03,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 106 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:43:03,957 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 74 flow [2025-02-06 18:43:03,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2025-02-06 18:43:03,957 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-02-06 18:43:03,958 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 74 flow [2025-02-06 18:43:03,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 18:43:03,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:03,958 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:03,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:43:03,958 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:03,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash -290035751, now seen corresponding path program 1 times [2025-02-06 18:43:03,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:03,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792317160] [2025-02-06 18:43:03,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:03,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:43:03,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:43:03,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:03,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:04,043 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 18:43:04,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:04,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792317160] [2025-02-06 18:43:04,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792317160] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:04,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801245957] [2025-02-06 18:43:04,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:04,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:04,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:04,048 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 18:43:04,053 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 18:43:04,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:43:04,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:43:04,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:04,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:04,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:43:04,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:04,143 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 18:43:04,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:04,168 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 18:43:04,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801245957] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:04,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:04,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:43:04,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112485238] [2025-02-06 18:43:04,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:04,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:04,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:04,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:04,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:04,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:04,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 74 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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 18:43:04,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:04,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:04,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:04,287 INFO L124 PetriNetUnfolderBase]: 43/146 cut-off events. [2025-02-06 18:43:04,289 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-02-06 18:43:04,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 146 events. 43/146 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 527 event pairs, 42 based on Foata normal form. 2/134 useless extension candidates. Maximal degree in co-relation 236. Up to 101 conditions per place. [2025-02-06 18:43:04,291 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2025-02-06 18:43:04,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 135 flow [2025-02-06 18:43:04,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:43:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:43:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2025-02-06 18:43:04,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4700460829493088 [2025-02-06 18:43:04,294 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 74 flow. Second operand 7 states and 102 transitions. [2025-02-06 18:43:04,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 135 flow [2025-02-06 18:43:04,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 121 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:04,295 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 100 flow [2025-02-06 18:43:04,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2025-02-06 18:43:04,296 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-02-06 18:43:04,296 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 100 flow [2025-02-06 18:43:04,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 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 18:43:04,296 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:04,296 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:04,302 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 18:43:04,496 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 18:43:04,497 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:04,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:04,498 INFO L85 PathProgramCache]: Analyzing trace with hash 605820121, now seen corresponding path program 2 times [2025-02-06 18:43:04,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:04,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356333271] [2025-02-06 18:43:04,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:04,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:04,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:43:04,510 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 16 statements. [2025-02-06 18:43:04,510 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:04,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:04,555 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 18:43:04,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:04,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356333271] [2025-02-06 18:43:04,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356333271] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:04,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:04,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:43:04,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557739104] [2025-02-06 18:43:04,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:04,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:43:04,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:04,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:43:04,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:43:04,560 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:04,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 18:43:04,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:04,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:04,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:04,616 INFO L124 PetriNetUnfolderBase]: 49/145 cut-off events. [2025-02-06 18:43:04,616 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-06 18:43:04,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 145 events. 49/145 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 489 event pairs, 15 based on Foata normal form. 7/140 useless extension candidates. Maximal degree in co-relation 250. Up to 78 conditions per place. [2025-02-06 18:43:04,617 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 33 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2025-02-06 18:43:04,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 194 flow [2025-02-06 18:43:04,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:43:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:43:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2025-02-06 18:43:04,618 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6129032258064516 [2025-02-06 18:43:04,618 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 100 flow. Second operand 4 states and 76 transitions. [2025-02-06 18:43:04,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 194 flow [2025-02-06 18:43:04,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:04,619 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 100 flow [2025-02-06 18:43:04,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2025-02-06 18:43:04,620 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2025-02-06 18:43:04,620 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 100 flow [2025-02-06 18:43:04,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 18:43:04,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:04,620 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:04,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:43:04,620 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:04,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:04,620 INFO L85 PathProgramCache]: Analyzing trace with hash 605674058, now seen corresponding path program 1 times [2025-02-06 18:43:04,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:04,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993984556] [2025-02-06 18:43:04,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:04,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:04,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:43:04,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:43:04,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:04,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:04,740 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 18:43:04,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993984556] [2025-02-06 18:43:04,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993984556] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:04,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540267042] [2025-02-06 18:43:04,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:04,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:04,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:04,742 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 18:43:04,743 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 18:43:04,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:43:04,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:43:04,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:04,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:04,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:43:04,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:04,824 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 18:43:04,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:04,888 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 18:43:04,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540267042] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:04,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:04,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-06 18:43:04,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313153428] [2025-02-06 18:43:04,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:04,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:43:04,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:04,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:43:04,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:43:04,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:04,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 100 flow. Second operand has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 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 18:43:04,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:04,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:04,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:05,019 INFO L124 PetriNetUnfolderBase]: 43/156 cut-off events. [2025-02-06 18:43:05,019 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2025-02-06 18:43:05,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 156 events. 43/156 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 509 event pairs, 42 based on Foata normal form. 4/150 useless extension candidates. Maximal degree in co-relation 257. Up to 101 conditions per place. [2025-02-06 18:43:05,020 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 16 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2025-02-06 18:43:05,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 40 transitions, 210 flow [2025-02-06 18:43:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:43:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:43:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 200 transitions. [2025-02-06 18:43:05,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2025-02-06 18:43:05,022 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 100 flow. Second operand 15 states and 200 transitions. [2025-02-06 18:43:05,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 40 transitions, 210 flow [2025-02-06 18:43:05,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 40 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:05,023 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 191 flow [2025-02-06 18:43:05,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=191, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2025-02-06 18:43:05,024 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2025-02-06 18:43:05,024 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 191 flow [2025-02-06 18:43:05,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.277777777777779) internal successors, (221), 18 states have internal predecessors, (221), 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 18:43:05,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:05,024 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:05,030 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 18:43:05,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:05,225 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:05,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1628697674, now seen corresponding path program 2 times [2025-02-06 18:43:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:05,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739867383] [2025-02-06 18:43:05,226 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:05,233 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:43:05,249 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 28 statements. [2025-02-06 18:43:05,250 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:05,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:05,836 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 18:43:05,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:05,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739867383] [2025-02-06 18:43:05,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739867383] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:05,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:05,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:43:05,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785386260] [2025-02-06 18:43:05,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:05,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:43:05,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:05,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:43:05,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:43:05,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:05,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 18:43:05,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:05,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:05,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:06,008 INFO L124 PetriNetUnfolderBase]: 49/160 cut-off events. [2025-02-06 18:43:06,008 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2025-02-06 18:43:06,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 160 events. 49/160 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 470 event pairs, 20 based on Foata normal form. 8/162 useless extension candidates. Maximal degree in co-relation 259. Up to 79 conditions per place. [2025-02-06 18:43:06,009 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 39 selfloop transitions, 5 changer transitions 6/57 dead transitions. [2025-02-06 18:43:06,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 325 flow [2025-02-06 18:43:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2025-02-06 18:43:06,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2025-02-06 18:43:06,010 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 191 flow. Second operand 6 states and 107 transitions. [2025-02-06 18:43:06,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 325 flow [2025-02-06 18:43:06,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 315 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:43:06,012 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 208 flow [2025-02-06 18:43:06,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2025-02-06 18:43:06,013 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2025-02-06 18:43:06,013 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 208 flow [2025-02-06 18:43:06,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 18:43:06,013 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:06,013 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:06,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:43:06,013 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:06,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:06,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1045451414, now seen corresponding path program 1 times [2025-02-06 18:43:06,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:06,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295513114] [2025-02-06 18:43:06,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:06,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:06,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 18:43:06,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 18:43:06,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:06,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:06,065 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 18:43:06,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:06,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295513114] [2025-02-06 18:43:06,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295513114] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:06,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:06,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:43:06,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044082952] [2025-02-06 18:43:06,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:06,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:43:06,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:06,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:43:06,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:43:06,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:06,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 18:43:06,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:06,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:06,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:06,124 INFO L124 PetriNetUnfolderBase]: 33/127 cut-off events. [2025-02-06 18:43:06,124 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2025-02-06 18:43:06,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 127 events. 33/127 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 358 event pairs, 14 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 299. Up to 58 conditions per place. [2025-02-06 18:43:06,125 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 41 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2025-02-06 18:43:06,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 332 flow [2025-02-06 18:43:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:43:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:43:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2025-02-06 18:43:06,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6048387096774194 [2025-02-06 18:43:06,126 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 208 flow. Second operand 4 states and 75 transitions. [2025-02-06 18:43:06,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 332 flow [2025-02-06 18:43:06,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 321 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:06,128 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 203 flow [2025-02-06 18:43:06,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2025-02-06 18:43:06,128 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2025-02-06 18:43:06,128 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 203 flow [2025-02-06 18:43:06,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 18:43:06,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:06,129 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:06,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:43:06,129 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:06,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1950744890, now seen corresponding path program 1 times [2025-02-06 18:43:06,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:06,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842184743] [2025-02-06 18:43:06,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:06,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:43:06,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:43:06,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:06,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:06,339 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 18:43:06,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:06,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842184743] [2025-02-06 18:43:06,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842184743] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:06,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44250174] [2025-02-06 18:43:06,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:06,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:06,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:06,341 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 18:43:06,343 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 18:43:06,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 18:43:06,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 18:43:06,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:06,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:06,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 18:43:06,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:06,451 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 18:43:06,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:06,596 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 18:43:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44250174] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:06,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:06,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-06 18:43:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130058596] [2025-02-06 18:43:06,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:06,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:43:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:06,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:43:06,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:43:06,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:06,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 203 flow. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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 18:43:06,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:06,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:06,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:06,767 INFO L124 PetriNetUnfolderBase]: 33/144 cut-off events. [2025-02-06 18:43:06,767 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2025-02-06 18:43:06,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 144 events. 33/144 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 398 event pairs, 32 based on Foata normal form. 3/141 useless extension candidates. Maximal degree in co-relation 249. Up to 82 conditions per place. [2025-02-06 18:43:06,768 INFO L140 encePairwiseOnDemand]: 27/31 looper letters, 17 selfloop transitions, 21 changer transitions 0/46 dead transitions. [2025-02-06 18:43:06,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 46 transitions, 333 flow [2025-02-06 18:43:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 18:43:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 18:43:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2025-02-06 18:43:06,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4162826420890937 [2025-02-06 18:43:06,770 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 203 flow. Second operand 21 states and 271 transitions. [2025-02-06 18:43:06,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 46 transitions, 333 flow [2025-02-06 18:43:06,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 46 transitions, 327 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:06,771 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 308 flow [2025-02-06 18:43:06,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=308, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2025-02-06 18:43:06,772 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2025-02-06 18:43:06,772 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 308 flow [2025-02-06 18:43:06,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 23 states have internal predecessors, (283), 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 18:43:06,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:06,772 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:06,778 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 18:43:06,973 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 18:43:06,973 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:06,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1380353102, now seen corresponding path program 2 times [2025-02-06 18:43:06,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:06,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55684103] [2025-02-06 18:43:06,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:06,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:06,982 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-06 18:43:07,006 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 39 statements. [2025-02-06 18:43:07,006 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:07,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:07,276 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 18:43:07,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:07,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55684103] [2025-02-06 18:43:07,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55684103] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:07,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:07,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:43:07,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048583350] [2025-02-06 18:43:07,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:07,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:43:07,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:07,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:43:07,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:43:07,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:43:07,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 46 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 18:43:07,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:07,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:43:07,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:07,411 INFO L124 PetriNetUnfolderBase]: 36/145 cut-off events. [2025-02-06 18:43:07,411 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2025-02-06 18:43:07,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 145 events. 36/145 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 387 event pairs, 8 based on Foata normal form. 14/159 useless extension candidates. Maximal degree in co-relation 258. Up to 57 conditions per place. [2025-02-06 18:43:07,412 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 46 selfloop transitions, 6 changer transitions 4/62 dead transitions. [2025-02-06 18:43:07,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 62 transitions, 464 flow [2025-02-06 18:43:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2025-02-06 18:43:07,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2025-02-06 18:43:07,413 INFO L175 Difference]: Start difference. First operand has 78 places, 46 transitions, 308 flow. Second operand 6 states and 107 transitions. [2025-02-06 18:43:07,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 62 transitions, 464 flow [2025-02-06 18:43:07,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 421 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-02-06 18:43:07,415 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 305 flow [2025-02-06 18:43:07,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2025-02-06 18:43:07,416 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2025-02-06 18:43:07,416 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 305 flow [2025-02-06 18:43:07,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 18:43:07,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:07,416 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:07,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:43:07,417 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:07,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1627081028, now seen corresponding path program 1 times [2025-02-06 18:43:07,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:07,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328109011] [2025-02-06 18:43:07,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:07,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 18:43:07,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 18:43:07,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:07,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:11,299 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 18:43:11,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:11,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328109011] [2025-02-06 18:43:11,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328109011] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:11,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:11,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 18:43:11,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524697238] [2025-02-06 18:43:11,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:11,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:43:11,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:11,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:43:11,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:43:11,336 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-02-06 18:43:11,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 49 transitions, 305 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 18:43:11,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:11,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-02-06 18:43:11,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:13,061 INFO L124 PetriNetUnfolderBase]: 71/217 cut-off events. [2025-02-06 18:43:13,062 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2025-02-06 18:43:13,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 217 events. 71/217 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 725 event pairs, 12 based on Foata normal form. 3/220 useless extension candidates. Maximal degree in co-relation 577. Up to 45 conditions per place. [2025-02-06 18:43:13,063 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 21 changer transitions 6/96 dead transitions. [2025-02-06 18:43:13,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 654 flow [2025-02-06 18:43:13,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 18:43:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 18:43:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 188 transitions. [2025-02-06 18:43:13,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2025-02-06 18:43:13,064 INFO L175 Difference]: Start difference. First operand has 74 places, 49 transitions, 305 flow. Second operand 16 states and 188 transitions. [2025-02-06 18:43:13,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 654 flow [2025-02-06 18:43:13,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 96 transitions, 639 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:13,068 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 438 flow [2025-02-06 18:43:13,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=438, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2025-02-06 18:43:13,072 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2025-02-06 18:43:13,072 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 438 flow [2025-02-06 18:43:13,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 18:43:13,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:13,072 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:13,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:43:13,073 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:13,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash 91577526, now seen corresponding path program 2 times [2025-02-06 18:43:13,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:13,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4992690] [2025-02-06 18:43:13,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:13,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:13,083 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-02-06 18:43:13,122 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-02-06 18:43:13,122 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:13,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:15,391 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 18:43:15,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:15,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4992690] [2025-02-06 18:43:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4992690] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:15,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:15,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 18:43:15,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208720259] [2025-02-06 18:43:15,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:15,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:43:15,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:15,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:43:15,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:43:15,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-02-06 18:43:15,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 18:43:15,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:15,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-02-06 18:43:15,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:17,023 INFO L124 PetriNetUnfolderBase]: 69/256 cut-off events. [2025-02-06 18:43:17,024 INFO L125 PetriNetUnfolderBase]: For 495/498 co-relation queries the response was YES. [2025-02-06 18:43:17,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 256 events. 69/256 cut-off events. For 495/498 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1106 event pairs, 14 based on Foata normal form. 6/261 useless extension candidates. Maximal degree in co-relation 714. Up to 58 conditions per place. [2025-02-06 18:43:17,026 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 60 selfloop transitions, 21 changer transitions 3/90 dead transitions. [2025-02-06 18:43:17,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 90 transitions, 725 flow [2025-02-06 18:43:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:43:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:43:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2025-02-06 18:43:17,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45483870967741935 [2025-02-06 18:43:17,028 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 438 flow. Second operand 10 states and 141 transitions. [2025-02-06 18:43:17,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 90 transitions, 725 flow [2025-02-06 18:43:17,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 90 transitions, 695 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:17,032 INFO L231 Difference]: Finished difference. Result has 102 places, 71 transitions, 551 flow [2025-02-06 18:43:17,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=551, PETRI_PLACES=102, PETRI_TRANSITIONS=71} [2025-02-06 18:43:17,033 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 69 predicate places. [2025-02-06 18:43:17,034 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 71 transitions, 551 flow [2025-02-06 18:43:17,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 18:43:17,035 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:17,035 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:17,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:43:17,035 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:17,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1487537480, now seen corresponding path program 1 times [2025-02-06 18:43:17,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:17,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099629737] [2025-02-06 18:43:17,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:17,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:17,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 18:43:17,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 18:43:17,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:17,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:19,615 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 18:43:19,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:19,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099629737] [2025-02-06 18:43:19,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099629737] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:19,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:19,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 18:43:19,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316129515] [2025-02-06 18:43:19,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:19,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:43:19,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:19,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:43:19,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:43:19,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2025-02-06 18:43:19,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 71 transitions, 551 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:19,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:19,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2025-02-06 18:43:19,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:20,548 INFO L124 PetriNetUnfolderBase]: 80/274 cut-off events. [2025-02-06 18:43:20,548 INFO L125 PetriNetUnfolderBase]: For 664/671 co-relation queries the response was YES. [2025-02-06 18:43:20,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 274 events. 80/274 cut-off events. For 664/671 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1169 event pairs, 30 based on Foata normal form. 10/284 useless extension candidates. Maximal degree in co-relation 822. Up to 149 conditions per place. [2025-02-06 18:43:20,549 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 61 selfloop transitions, 34 changer transitions 2/101 dead transitions. [2025-02-06 18:43:20,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 101 transitions, 880 flow [2025-02-06 18:43:20,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 18:43:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 18:43:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 192 transitions. [2025-02-06 18:43:20,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2025-02-06 18:43:20,551 INFO L175 Difference]: Start difference. First operand has 102 places, 71 transitions, 551 flow. Second operand 16 states and 192 transitions. [2025-02-06 18:43:20,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 101 transitions, 880 flow [2025-02-06 18:43:20,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 101 transitions, 865 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:20,555 INFO L231 Difference]: Finished difference. Result has 118 places, 84 transitions, 719 flow [2025-02-06 18:43:20,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=719, PETRI_PLACES=118, PETRI_TRANSITIONS=84} [2025-02-06 18:43:20,555 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 85 predicate places. [2025-02-06 18:43:20,555 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 84 transitions, 719 flow [2025-02-06 18:43:20,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:20,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:20,556 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:20,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:43:20,556 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:20,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:20,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1039843196, now seen corresponding path program 2 times [2025-02-06 18:43:20,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:20,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342478202] [2025-02-06 18:43:20,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:20,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:20,563 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-02-06 18:43:20,574 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-02-06 18:43:20,574 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:20,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:25,415 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 18:43:25,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:25,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342478202] [2025-02-06 18:43:25,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342478202] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:25,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:25,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 18:43:25,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38291457] [2025-02-06 18:43:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:25,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:43:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:25,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:43:25,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:43:25,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-02-06 18:43:25,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 84 transitions, 719 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 18:43:25,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:25,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-02-06 18:43:25,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:26,911 INFO L124 PetriNetUnfolderBase]: 94/303 cut-off events. [2025-02-06 18:43:26,911 INFO L125 PetriNetUnfolderBase]: For 853/856 co-relation queries the response was YES. [2025-02-06 18:43:26,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 303 events. 94/303 cut-off events. For 853/856 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1328 event pairs, 36 based on Foata normal form. 4/307 useless extension candidates. Maximal degree in co-relation 1064. Up to 157 conditions per place. [2025-02-06 18:43:26,913 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 68 selfloop transitions, 37 changer transitions 2/109 dead transitions. [2025-02-06 18:43:26,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 109 transitions, 1045 flow [2025-02-06 18:43:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 18:43:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 18:43:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 193 transitions. [2025-02-06 18:43:26,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34587813620071683 [2025-02-06 18:43:26,916 INFO L175 Difference]: Start difference. First operand has 118 places, 84 transitions, 719 flow. Second operand 18 states and 193 transitions. [2025-02-06 18:43:26,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 109 transitions, 1045 flow [2025-02-06 18:43:26,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 109 transitions, 984 flow, removed 7 selfloop flow, removed 5 redundant places. [2025-02-06 18:43:26,923 INFO L231 Difference]: Finished difference. Result has 133 places, 90 transitions, 804 flow [2025-02-06 18:43:26,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=804, PETRI_PLACES=133, PETRI_TRANSITIONS=90} [2025-02-06 18:43:26,923 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 100 predicate places. [2025-02-06 18:43:26,923 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 90 transitions, 804 flow [2025-02-06 18:43:26,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 18:43:26,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:26,923 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:26,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:43:26,923 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:26,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:26,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1040881076, now seen corresponding path program 3 times [2025-02-06 18:43:26,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:26,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55371934] [2025-02-06 18:43:26,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:26,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:26,935 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-02-06 18:43:26,950 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-02-06 18:43:26,950 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:43:26,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:31,198 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 18:43:31,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:31,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55371934] [2025-02-06 18:43:31,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55371934] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:31,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:31,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 18:43:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901653661] [2025-02-06 18:43:31,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:31,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:43:31,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:31,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:43:31,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:43:31,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-02-06 18:43:31,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 90 transitions, 804 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 18:43:31,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:31,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-02-06 18:43:31,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:32,619 INFO L124 PetriNetUnfolderBase]: 99/316 cut-off events. [2025-02-06 18:43:32,619 INFO L125 PetriNetUnfolderBase]: For 942/945 co-relation queries the response was YES. [2025-02-06 18:43:32,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1257 conditions, 316 events. 99/316 cut-off events. For 942/945 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1425 event pairs, 31 based on Foata normal form. 4/320 useless extension candidates. Maximal degree in co-relation 1150. Up to 153 conditions per place. [2025-02-06 18:43:32,621 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 74 selfloop transitions, 43 changer transitions 0/119 dead transitions. [2025-02-06 18:43:32,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 119 transitions, 1180 flow [2025-02-06 18:43:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:43:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:43:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 189 transitions. [2025-02-06 18:43:32,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3586337760910816 [2025-02-06 18:43:32,622 INFO L175 Difference]: Start difference. First operand has 133 places, 90 transitions, 804 flow. Second operand 17 states and 189 transitions. [2025-02-06 18:43:32,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 119 transitions, 1180 flow [2025-02-06 18:43:32,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 119 transitions, 1105 flow, removed 19 selfloop flow, removed 8 redundant places. [2025-02-06 18:43:32,628 INFO L231 Difference]: Finished difference. Result has 144 places, 98 transitions, 917 flow [2025-02-06 18:43:32,628 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=917, PETRI_PLACES=144, PETRI_TRANSITIONS=98} [2025-02-06 18:43:32,628 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2025-02-06 18:43:32,628 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 98 transitions, 917 flow [2025-02-06 18:43:32,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 18:43:32,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:32,629 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:32,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:43:32,629 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:32,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1010350106, now seen corresponding path program 4 times [2025-02-06 18:43:32,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904761209] [2025-02-06 18:43:32,630 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:43:32,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:32,636 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-02-06 18:43:32,661 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 18:43:32,661 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:43:32,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:36,359 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 18:43:36,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:36,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904761209] [2025-02-06 18:43:36,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904761209] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:36,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:36,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:36,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112925367] [2025-02-06 18:43:36,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:36,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:36,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:36,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:36,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:36,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-02-06 18:43:36,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 98 transitions, 917 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:36,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:36,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-02-06 18:43:36,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:37,929 INFO L124 PetriNetUnfolderBase]: 107/347 cut-off events. [2025-02-06 18:43:37,930 INFO L125 PetriNetUnfolderBase]: For 1205/1208 co-relation queries the response was YES. [2025-02-06 18:43:37,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 347 events. 107/347 cut-off events. For 1205/1208 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1669 event pairs, 31 based on Foata normal form. 6/353 useless extension candidates. Maximal degree in co-relation 1332. Up to 123 conditions per place. [2025-02-06 18:43:37,932 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 83 selfloop transitions, 46 changer transitions 0/131 dead transitions. [2025-02-06 18:43:37,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 131 transitions, 1345 flow [2025-02-06 18:43:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 18:43:37,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-06 18:43:37,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 222 transitions. [2025-02-06 18:43:37,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2025-02-06 18:43:37,933 INFO L175 Difference]: Start difference. First operand has 144 places, 98 transitions, 917 flow. Second operand 20 states and 222 transitions. [2025-02-06 18:43:37,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 131 transitions, 1345 flow [2025-02-06 18:43:37,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 131 transitions, 1278 flow, removed 6 selfloop flow, removed 10 redundant places. [2025-02-06 18:43:37,939 INFO L231 Difference]: Finished difference. Result has 157 places, 104 transitions, 1016 flow [2025-02-06 18:43:37,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1016, PETRI_PLACES=157, PETRI_TRANSITIONS=104} [2025-02-06 18:43:37,940 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 124 predicate places. [2025-02-06 18:43:37,940 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 104 transitions, 1016 flow [2025-02-06 18:43:37,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:37,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:37,940 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:37,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 18:43:37,940 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:37,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash 945539606, now seen corresponding path program 5 times [2025-02-06 18:43:37,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:37,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017736460] [2025-02-06 18:43:37,941 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:43:37,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:37,948 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-02-06 18:43:37,968 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 18:43:37,968 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-06 18:43:37,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-06 18:43:39,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017736460] [2025-02-06 18:43:39,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017736460] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452339663] [2025-02-06 18:43:39,137 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:43:39,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:39,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:39,139 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:43:39,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:43:39,193 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-02-06 18:43:39,282 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 18:43:39,282 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-06 18:43:39,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:39,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-02-06 18:43:39,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:40,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-02-06 18:43:41,016 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2025-02-06 18:43:41,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 13 [2025-02-06 18:43:41,333 INFO L349 Elim1Store]: treesize reduction 176, result has 40.9 percent of original size [2025-02-06 18:43:41,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 56 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 93 treesize of output 155 [2025-02-06 18:43:42,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:43:42,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 56 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 535 treesize of output 349 [2025-02-06 18:43:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:43:42,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:43,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 18:43:43,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-02-06 18:43:43,332 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 18:43:43,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452339663] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:43,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:43:43,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 25] total 37 [2025-02-06 18:43:43,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491614997] [2025-02-06 18:43:43,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:43,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:43:43,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:43,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:43:43,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1277, Unknown=0, NotChecked=0, Total=1482 [2025-02-06 18:43:43,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2025-02-06 18:43:43,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 104 transitions, 1016 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 18:43:43,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:43,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2025-02-06 18:43:43,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:43,804 INFO L124 PetriNetUnfolderBase]: 101/360 cut-off events. [2025-02-06 18:43:43,805 INFO L125 PetriNetUnfolderBase]: For 1552/1554 co-relation queries the response was YES. [2025-02-06 18:43:43,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 360 events. 101/360 cut-off events. For 1552/1554 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1894 event pairs, 20 based on Foata normal form. 5/365 useless extension candidates. Maximal degree in co-relation 1497. Up to 54 conditions per place. [2025-02-06 18:43:43,807 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 46 changer transitions 0/149 dead transitions. [2025-02-06 18:43:43,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 149 transitions, 1610 flow [2025-02-06 18:43:43,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 18:43:43,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 18:43:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 178 transitions. [2025-02-06 18:43:43,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2025-02-06 18:43:43,808 INFO L175 Difference]: Start difference. First operand has 157 places, 104 transitions, 1016 flow. Second operand 12 states and 178 transitions. [2025-02-06 18:43:43,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 149 transitions, 1610 flow [2025-02-06 18:43:43,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 1531 flow, removed 8 selfloop flow, removed 11 redundant places. [2025-02-06 18:43:43,815 INFO L231 Difference]: Finished difference. Result has 161 places, 115 transitions, 1190 flow [2025-02-06 18:43:43,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1190, PETRI_PLACES=161, PETRI_TRANSITIONS=115} [2025-02-06 18:43:43,816 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 128 predicate places. [2025-02-06 18:43:43,816 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 115 transitions, 1190 flow [2025-02-06 18:43:43,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 18:43:43,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:43,816 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:43,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:43:44,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 18:43:44,017 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:44,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:44,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1036916622, now seen corresponding path program 3 times [2025-02-06 18:43:44,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:44,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454966359] [2025-02-06 18:43:44,018 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:44,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:44,025 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-02-06 18:43:44,042 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-02-06 18:43:44,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:43:44,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:47,083 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 18:43:47,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:47,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454966359] [2025-02-06 18:43:47,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454966359] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:47,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:47,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:47,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195123581] [2025-02-06 18:43:47,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:47,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:47,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:47,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:47,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:47,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-02-06 18:43:47,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 115 transitions, 1190 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:47,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:47,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-02-06 18:43:47,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:48,096 INFO L124 PetriNetUnfolderBase]: 155/484 cut-off events. [2025-02-06 18:43:48,096 INFO L125 PetriNetUnfolderBase]: For 1892/1894 co-relation queries the response was YES. [2025-02-06 18:43:48,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 484 events. 155/484 cut-off events. For 1892/1894 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2718 event pairs, 41 based on Foata normal form. 6/490 useless extension candidates. Maximal degree in co-relation 2052. Up to 186 conditions per place. [2025-02-06 18:43:48,103 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 108 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2025-02-06 18:43:48,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 148 transitions, 1670 flow [2025-02-06 18:43:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:43:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:43:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 167 transitions. [2025-02-06 18:43:48,104 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3847926267281106 [2025-02-06 18:43:48,104 INFO L175 Difference]: Start difference. First operand has 161 places, 115 transitions, 1190 flow. Second operand 14 states and 167 transitions. [2025-02-06 18:43:48,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 148 transitions, 1670 flow [2025-02-06 18:43:48,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 148 transitions, 1654 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-06 18:43:48,119 INFO L231 Difference]: Finished difference. Result has 178 places, 122 transitions, 1392 flow [2025-02-06 18:43:48,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1392, PETRI_PLACES=178, PETRI_TRANSITIONS=122} [2025-02-06 18:43:48,119 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 145 predicate places. [2025-02-06 18:43:48,119 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 122 transitions, 1392 flow [2025-02-06 18:43:48,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:48,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:48,120 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:48,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 18:43:48,120 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:48,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1976684140, now seen corresponding path program 4 times [2025-02-06 18:43:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:48,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876101255] [2025-02-06 18:43:48,121 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:43:48,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:48,135 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-02-06 18:43:48,194 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 18:43:48,197 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:43:48,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:51,738 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 18:43:51,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:51,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876101255] [2025-02-06 18:43:51,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876101255] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:51,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:51,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 18:43:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066401415] [2025-02-06 18:43:51,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:51,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 18:43:51,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:51,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 18:43:51,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-06 18:43:51,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-02-06 18:43:51,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 122 transitions, 1392 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 18:43:51,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:51,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-02-06 18:43:51,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:52,642 INFO L124 PetriNetUnfolderBase]: 168/523 cut-off events. [2025-02-06 18:43:52,645 INFO L125 PetriNetUnfolderBase]: For 2557/2559 co-relation queries the response was YES. [2025-02-06 18:43:52,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 523 events. 168/523 cut-off events. For 2557/2559 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3051 event pairs, 43 based on Foata normal form. 6/529 useless extension candidates. Maximal degree in co-relation 2264. Up to 227 conditions per place. [2025-02-06 18:43:52,658 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 106 selfloop transitions, 43 changer transitions 0/151 dead transitions. [2025-02-06 18:43:52,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 151 transitions, 1833 flow [2025-02-06 18:43:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:43:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:43:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 170 transitions. [2025-02-06 18:43:52,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2025-02-06 18:43:52,660 INFO L175 Difference]: Start difference. First operand has 178 places, 122 transitions, 1392 flow. Second operand 15 states and 170 transitions. [2025-02-06 18:43:52,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 151 transitions, 1833 flow [2025-02-06 18:43:52,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 151 transitions, 1784 flow, removed 8 selfloop flow, removed 7 redundant places. [2025-02-06 18:43:52,688 INFO L231 Difference]: Finished difference. Result has 189 places, 127 transitions, 1527 flow [2025-02-06 18:43:52,688 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1527, PETRI_PLACES=189, PETRI_TRANSITIONS=127} [2025-02-06 18:43:52,688 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 156 predicate places. [2025-02-06 18:43:52,688 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 127 transitions, 1527 flow [2025-02-06 18:43:52,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 18:43:52,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:52,688 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:52,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 18:43:52,689 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:52,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:52,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1662386742, now seen corresponding path program 5 times [2025-02-06 18:43:52,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:52,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824308385] [2025-02-06 18:43:52,689 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:43:52,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:52,698 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-02-06 18:43:52,739 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 18:43:52,739 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-06 18:43:52,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:53,618 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 18:43:53,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:53,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824308385] [2025-02-06 18:43:53,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824308385] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:53,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:53,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:53,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637127178] [2025-02-06 18:43:53,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:53,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:53,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:53,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:53,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:53,635 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2025-02-06 18:43:53,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 127 transitions, 1527 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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 18:43:53,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:53,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2025-02-06 18:43:53,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:54,062 INFO L124 PetriNetUnfolderBase]: 144/493 cut-off events. [2025-02-06 18:43:54,063 INFO L125 PetriNetUnfolderBase]: For 3127/3129 co-relation queries the response was YES. [2025-02-06 18:43:54,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2376 conditions, 493 events. 144/493 cut-off events. For 3127/3129 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2953 event pairs, 35 based on Foata normal form. 4/497 useless extension candidates. Maximal degree in co-relation 2238. Up to 132 conditions per place. [2025-02-06 18:43:54,067 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 86 selfloop transitions, 44 changer transitions 0/139 dead transitions. [2025-02-06 18:43:54,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 139 transitions, 1818 flow [2025-02-06 18:43:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:43:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:43:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2025-02-06 18:43:54,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3771712158808933 [2025-02-06 18:43:54,068 INFO L175 Difference]: Start difference. First operand has 189 places, 127 transitions, 1527 flow. Second operand 13 states and 152 transitions. [2025-02-06 18:43:54,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 139 transitions, 1818 flow [2025-02-06 18:43:54,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 139 transitions, 1734 flow, removed 13 selfloop flow, removed 9 redundant places. [2025-02-06 18:43:54,080 INFO L231 Difference]: Finished difference. Result has 191 places, 126 transitions, 1521 flow [2025-02-06 18:43:54,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1521, PETRI_PLACES=191, PETRI_TRANSITIONS=126} [2025-02-06 18:43:54,081 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 158 predicate places. [2025-02-06 18:43:54,081 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 126 transitions, 1521 flow [2025-02-06 18:43:54,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 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 18:43:54,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:54,081 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:54,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 18:43:54,081 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:54,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:54,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1966601889, now seen corresponding path program 1 times [2025-02-06 18:43:54,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:54,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516046795] [2025-02-06 18:43:54,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:54,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-06 18:43:54,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:43:54,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:54,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:56,270 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 18:43:56,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:56,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516046795] [2025-02-06 18:43:56,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516046795] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:56,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:56,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 18:43:56,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987629806] [2025-02-06 18:43:56,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:56,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:43:56,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:56,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:43:56,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:43:56,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-02-06 18:43:56,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 126 transitions, 1521 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 18:43:56,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:56,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-02-06 18:43:56,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:57,341 INFO L124 PetriNetUnfolderBase]: 122/452 cut-off events. [2025-02-06 18:43:57,341 INFO L125 PetriNetUnfolderBase]: For 2935/2937 co-relation queries the response was YES. [2025-02-06 18:43:57,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 452 events. 122/452 cut-off events. For 2935/2937 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2741 event pairs, 47 based on Foata normal form. 12/459 useless extension candidates. Maximal degree in co-relation 2105. Up to 223 conditions per place. [2025-02-06 18:43:57,344 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 71 selfloop transitions, 20 changer transitions 30/143 dead transitions. [2025-02-06 18:43:57,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 143 transitions, 1837 flow [2025-02-06 18:43:57,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:43:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:43:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2025-02-06 18:43:57,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4717741935483871 [2025-02-06 18:43:57,345 INFO L175 Difference]: Start difference. First operand has 191 places, 126 transitions, 1521 flow. Second operand 8 states and 117 transitions. [2025-02-06 18:43:57,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 143 transitions, 1837 flow [2025-02-06 18:43:57,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 143 transitions, 1756 flow, removed 2 selfloop flow, removed 10 redundant places. [2025-02-06 18:43:57,355 INFO L231 Difference]: Finished difference. Result has 188 places, 109 transitions, 1199 flow [2025-02-06 18:43:57,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1199, PETRI_PLACES=188, PETRI_TRANSITIONS=109} [2025-02-06 18:43:57,356 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 155 predicate places. [2025-02-06 18:43:57,356 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 109 transitions, 1199 flow [2025-02-06 18:43:57,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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 18:43:57,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:57,356 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:57,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 18:43:57,357 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:43:57,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash 507812115, now seen corresponding path program 1 times [2025-02-06 18:43:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:57,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006248253] [2025-02-06 18:43:57,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:57,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-06 18:43:57,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:43:57,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:57,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:59,811 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 18:43:59,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:59,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006248253] [2025-02-06 18:43:59,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006248253] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:59,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:59,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:59,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699450] [2025-02-06 18:43:59,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:59,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:59,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:59,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:59,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:59,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-02-06 18:43:59,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 109 transitions, 1199 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 18:43:59,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:59,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-02-06 18:43:59,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:00,785 INFO L124 PetriNetUnfolderBase]: 84/337 cut-off events. [2025-02-06 18:44:00,785 INFO L125 PetriNetUnfolderBase]: For 1954/1956 co-relation queries the response was YES. [2025-02-06 18:44:00,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 337 events. 84/337 cut-off events. For 1954/1956 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1800 event pairs, 40 based on Foata normal form. 8/343 useless extension candidates. Maximal degree in co-relation 1479. Up to 195 conditions per place. [2025-02-06 18:44:00,788 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 24 changer transitions 17/119 dead transitions. [2025-02-06 18:44:00,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 119 transitions, 1424 flow [2025-02-06 18:44:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:44:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:44:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2025-02-06 18:44:00,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4094292803970223 [2025-02-06 18:44:00,791 INFO L175 Difference]: Start difference. First operand has 188 places, 109 transitions, 1199 flow. Second operand 13 states and 165 transitions. [2025-02-06 18:44:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 119 transitions, 1424 flow [2025-02-06 18:44:00,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 119 transitions, 1316 flow, removed 3 selfloop flow, removed 12 redundant places. [2025-02-06 18:44:00,799 INFO L231 Difference]: Finished difference. Result has 182 places, 97 transitions, 988 flow [2025-02-06 18:44:00,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=988, PETRI_PLACES=182, PETRI_TRANSITIONS=97} [2025-02-06 18:44:00,799 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 149 predicate places. [2025-02-06 18:44:00,800 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 97 transitions, 988 flow [2025-02-06 18:44:00,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 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 18:44:00,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:00,800 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:00,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 18:44:00,800 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:44:00,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:00,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2091320834, now seen corresponding path program 1 times [2025-02-06 18:44:00,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:00,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951760629] [2025-02-06 18:44:00,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:44:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:00,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-06 18:44:00,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:44:00,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:44:00,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:03,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:03,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951760629] [2025-02-06 18:44:03,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951760629] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:03,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:03,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:44:03,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674527585] [2025-02-06 18:44:03,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:03,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:44:03,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:03,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:44:03,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:44:03,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2025-02-06 18:44:03,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 97 transitions, 988 flow. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:44:03,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:03,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2025-02-06 18:44:03,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:03,648 INFO L124 PetriNetUnfolderBase]: 95/322 cut-off events. [2025-02-06 18:44:03,648 INFO L125 PetriNetUnfolderBase]: For 1062/1062 co-relation queries the response was YES. [2025-02-06 18:44:03,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 322 events. 95/322 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1559 event pairs, 16 based on Foata normal form. 2/324 useless extension candidates. Maximal degree in co-relation 1319. Up to 85 conditions per place. [2025-02-06 18:44:03,650 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 89 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2025-02-06 18:44:03,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 117 transitions, 1329 flow [2025-02-06 18:44:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 18:44:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 18:44:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2025-02-06 18:44:03,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2025-02-06 18:44:03,654 INFO L175 Difference]: Start difference. First operand has 182 places, 97 transitions, 988 flow. Second operand 11 states and 126 transitions. [2025-02-06 18:44:03,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 117 transitions, 1329 flow [2025-02-06 18:44:03,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 117 transitions, 1234 flow, removed 4 selfloop flow, removed 20 redundant places. [2025-02-06 18:44:03,660 INFO L231 Difference]: Finished difference. Result has 163 places, 96 transitions, 933 flow [2025-02-06 18:44:03,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=933, PETRI_PLACES=163, PETRI_TRANSITIONS=96} [2025-02-06 18:44:03,660 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 130 predicate places. [2025-02-06 18:44:03,661 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 96 transitions, 933 flow [2025-02-06 18:44:03,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:44:03,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:03,661 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:03,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-06 18:44:03,661 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:44:03,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:03,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2092424737, now seen corresponding path program 2 times [2025-02-06 18:44:03,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:03,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037892786] [2025-02-06 18:44:03,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:44:03,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:03,668 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-02-06 18:44:03,683 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:44:03,684 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:44:03,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:05,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:05,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037892786] [2025-02-06 18:44:05,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037892786] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:05,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:05,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 18:44:05,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571670233] [2025-02-06 18:44:05,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:05,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:44:05,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:05,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:44:05,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:44:05,074 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:44:05,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 96 transitions, 933 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 18:44:05,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:05,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:44:05,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:05,853 INFO L124 PetriNetUnfolderBase]: 63/284 cut-off events. [2025-02-06 18:44:05,854 INFO L125 PetriNetUnfolderBase]: For 939/939 co-relation queries the response was YES. [2025-02-06 18:44:05,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 284 events. 63/284 cut-off events. For 939/939 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1450 event pairs, 20 based on Foata normal form. 3/284 useless extension candidates. Maximal degree in co-relation 1138. Up to 93 conditions per place. [2025-02-06 18:44:05,855 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 57 selfloop transitions, 27 changer transitions 8/111 dead transitions. [2025-02-06 18:44:05,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 111 transitions, 1171 flow [2025-02-06 18:44:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:44:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:44:05,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 212 transitions. [2025-02-06 18:44:05,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4559139784946237 [2025-02-06 18:44:05,856 INFO L175 Difference]: Start difference. First operand has 163 places, 96 transitions, 933 flow. Second operand 15 states and 212 transitions. [2025-02-06 18:44:05,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 111 transitions, 1171 flow [2025-02-06 18:44:05,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 111 transitions, 1125 flow, removed 1 selfloop flow, removed 9 redundant places. [2025-02-06 18:44:05,861 INFO L231 Difference]: Finished difference. Result has 170 places, 92 transitions, 912 flow [2025-02-06 18:44:05,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=912, PETRI_PLACES=170, PETRI_TRANSITIONS=92} [2025-02-06 18:44:05,861 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 137 predicate places. [2025-02-06 18:44:05,861 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 92 transitions, 912 flow [2025-02-06 18:44:05,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 18:44:05,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:05,862 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:05,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-06 18:44:05,862 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:44:05,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:05,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2124599017, now seen corresponding path program 3 times [2025-02-06 18:44:05,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:05,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223197566] [2025-02-06 18:44:05,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:44:05,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:05,870 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-02-06 18:44:05,883 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 45 statements. [2025-02-06 18:44:05,884 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 18:44:05,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:07,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223197566] [2025-02-06 18:44:07,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223197566] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:07,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:07,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 18:44:07,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120009301] [2025-02-06 18:44:07,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:07,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:44:07,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:07,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:44:07,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:44:07,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:44:07,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 92 transitions, 912 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 18:44:07,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:07,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:44:07,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:08,191 INFO L124 PetriNetUnfolderBase]: 57/262 cut-off events. [2025-02-06 18:44:08,191 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2025-02-06 18:44:08,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 262 events. 57/262 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1278 event pairs, 15 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 1095. Up to 93 conditions per place. [2025-02-06 18:44:08,193 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 23 changer transitions 16/104 dead transitions. [2025-02-06 18:44:08,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 104 transitions, 1124 flow [2025-02-06 18:44:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:44:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:44:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 199 transitions. [2025-02-06 18:44:08,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45852534562211983 [2025-02-06 18:44:08,194 INFO L175 Difference]: Start difference. First operand has 170 places, 92 transitions, 912 flow. Second operand 14 states and 199 transitions. [2025-02-06 18:44:08,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 104 transitions, 1124 flow [2025-02-06 18:44:08,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 104 transitions, 1015 flow, removed 7 selfloop flow, removed 17 redundant places. [2025-02-06 18:44:08,198 INFO L231 Difference]: Finished difference. Result has 161 places, 79 transitions, 737 flow [2025-02-06 18:44:08,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=737, PETRI_PLACES=161, PETRI_TRANSITIONS=79} [2025-02-06 18:44:08,199 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 128 predicate places. [2025-02-06 18:44:08,199 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 79 transitions, 737 flow [2025-02-06 18:44:08,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 18:44:08,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:08,199 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:08,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-06 18:44:08,200 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:44:08,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash -753043011, now seen corresponding path program 4 times [2025-02-06 18:44:08,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:08,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350989347] [2025-02-06 18:44:08,201 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:44:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:08,208 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-02-06 18:44:08,227 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:44:08,227 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:44:08,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:10,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:10,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350989347] [2025-02-06 18:44:10,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350989347] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:10,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:10,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:44:10,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373648731] [2025-02-06 18:44:10,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:10,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:44:10,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:10,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:44:10,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:44:10,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:44:10,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 79 transitions, 737 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 18:44:10,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:10,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:44:10,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:11,523 INFO L124 PetriNetUnfolderBase]: 49/231 cut-off events. [2025-02-06 18:44:11,523 INFO L125 PetriNetUnfolderBase]: For 657/657 co-relation queries the response was YES. [2025-02-06 18:44:11,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 231 events. 49/231 cut-off events. For 657/657 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1028 event pairs, 20 based on Foata normal form. 3/234 useless extension candidates. Maximal degree in co-relation 932. Up to 111 conditions per place. [2025-02-06 18:44:11,527 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 46 selfloop transitions, 16 changer transitions 13/87 dead transitions. [2025-02-06 18:44:11,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 87 transitions, 911 flow [2025-02-06 18:44:11,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 18:44:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 18:44:11,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 174 transitions. [2025-02-06 18:44:11,529 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2025-02-06 18:44:11,529 INFO L175 Difference]: Start difference. First operand has 161 places, 79 transitions, 737 flow. Second operand 12 states and 174 transitions. [2025-02-06 18:44:11,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 87 transitions, 911 flow [2025-02-06 18:44:11,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 87 transitions, 837 flow, removed 3 selfloop flow, removed 17 redundant places. [2025-02-06 18:44:11,533 INFO L231 Difference]: Finished difference. Result has 144 places, 71 transitions, 631 flow [2025-02-06 18:44:11,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=631, PETRI_PLACES=144, PETRI_TRANSITIONS=71} [2025-02-06 18:44:11,534 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2025-02-06 18:44:11,534 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 71 transitions, 631 flow [2025-02-06 18:44:11,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 18:44:11,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:11,534 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:11,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-06 18:44:11,534 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:44:11,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1882855231, now seen corresponding path program 2 times [2025-02-06 18:44:11,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:11,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167007630] [2025-02-06 18:44:11,536 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:44:11,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:11,542 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-02-06 18:44:11,561 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 18:44:11,561 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:44:11,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:13,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:13,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167007630] [2025-02-06 18:44:13,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167007630] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:13,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:13,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:44:13,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377723495] [2025-02-06 18:44:13,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:13,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:44:13,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:13,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:44:13,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:44:13,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2025-02-06 18:44:13,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 71 transitions, 631 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 18:44:13,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:13,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2025-02-06 18:44:13,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:15,621 INFO L124 PetriNetUnfolderBase]: 45/212 cut-off events. [2025-02-06 18:44:15,621 INFO L125 PetriNetUnfolderBase]: For 557/557 co-relation queries the response was YES. [2025-02-06 18:44:15,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 212 events. 45/212 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 930 event pairs, 2 based on Foata normal form. 12/224 useless extension candidates. Maximal degree in co-relation 847. Up to 45 conditions per place. [2025-02-06 18:44:15,623 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 48 selfloop transitions, 14 changer transitions 29/101 dead transitions. [2025-02-06 18:44:15,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 101 transitions, 991 flow [2025-02-06 18:44:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:44:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:44:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 241 transitions. [2025-02-06 18:44:15,624 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4573055028462998 [2025-02-06 18:44:15,624 INFO L175 Difference]: Start difference. First operand has 144 places, 71 transitions, 631 flow. Second operand 17 states and 241 transitions. [2025-02-06 18:44:15,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 101 transitions, 991 flow [2025-02-06 18:44:15,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 101 transitions, 931 flow, removed 3 selfloop flow, removed 14 redundant places. [2025-02-06 18:44:15,627 INFO L231 Difference]: Finished difference. Result has 144 places, 61 transitions, 520 flow [2025-02-06 18:44:15,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=520, PETRI_PLACES=144, PETRI_TRANSITIONS=61} [2025-02-06 18:44:15,628 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 111 predicate places. [2025-02-06 18:44:15,628 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 61 transitions, 520 flow [2025-02-06 18:44:15,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 18:44:15,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:15,628 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:15,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-06 18:44:15,628 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:44:15,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash -406436139, now seen corresponding path program 1 times [2025-02-06 18:44:15,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:15,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756965636] [2025-02-06 18:44:15,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:44:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:15,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 18:44:15,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 18:44:15,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:44:15,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:17,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756965636] [2025-02-06 18:44:17,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756965636] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:17,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:17,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:44:17,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647460363] [2025-02-06 18:44:17,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:17,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:44:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:17,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:44:17,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:44:17,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-02-06 18:44:17,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 61 transitions, 520 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 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 18:44:17,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:17,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-02-06 18:44:17,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:18,116 INFO L124 PetriNetUnfolderBase]: 24/136 cut-off events. [2025-02-06 18:44:18,116 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2025-02-06 18:44:18,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 136 events. 24/136 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 356 event pairs, 13 based on Foata normal form. 2/138 useless extension candidates. Maximal degree in co-relation 518. Up to 51 conditions per place. [2025-02-06 18:44:18,117 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 8 changer transitions 15/65 dead transitions. [2025-02-06 18:44:18,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 65 transitions, 638 flow [2025-02-06 18:44:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 18:44:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 18:44:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2025-02-06 18:44:18,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2025-02-06 18:44:18,118 INFO L175 Difference]: Start difference. First operand has 144 places, 61 transitions, 520 flow. Second operand 10 states and 122 transitions. [2025-02-06 18:44:18,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 65 transitions, 638 flow [2025-02-06 18:44:18,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 65 transitions, 543 flow, removed 14 selfloop flow, removed 24 redundant places. [2025-02-06 18:44:18,120 INFO L231 Difference]: Finished difference. Result has 113 places, 50 transitions, 385 flow [2025-02-06 18:44:18,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=113, PETRI_TRANSITIONS=50} [2025-02-06 18:44:18,120 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 80 predicate places. [2025-02-06 18:44:18,120 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 50 transitions, 385 flow [2025-02-06 18:44:18,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 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 18:44:18,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:18,120 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:18,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-06 18:44:18,121 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:44:18,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:18,121 INFO L85 PathProgramCache]: Analyzing trace with hash -201209666, now seen corresponding path program 1 times [2025-02-06 18:44:18,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:18,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346403277] [2025-02-06 18:44:18,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:44:18,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:18,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 18:44:18,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 18:44:18,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:44:18,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:23,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:23,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346403277] [2025-02-06 18:44:23,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346403277] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:23,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:23,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:44:23,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76481405] [2025-02-06 18:44:23,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:23,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:44:23,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:23,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:44:23,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:44:24,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2025-02-06 18:44:24,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 50 transitions, 385 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 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 18:44:24,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:24,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2025-02-06 18:44:24,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:24,556 INFO L124 PetriNetUnfolderBase]: 13/95 cut-off events. [2025-02-06 18:44:24,557 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2025-02-06 18:44:24,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 95 events. 13/95 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 179 event pairs, 4 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 278. Up to 26 conditions per place. [2025-02-06 18:44:24,557 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 3 changer transitions 18/59 dead transitions. [2025-02-06 18:44:24,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 59 transitions, 531 flow [2025-02-06 18:44:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 18:44:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 18:44:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2025-02-06 18:44:24,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2025-02-06 18:44:24,562 INFO L175 Difference]: Start difference. First operand has 113 places, 50 transitions, 385 flow. Second operand 8 states and 100 transitions. [2025-02-06 18:44:24,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 59 transitions, 531 flow [2025-02-06 18:44:24,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 59 transitions, 474 flow, removed 0 selfloop flow, removed 15 redundant places. [2025-02-06 18:44:24,567 INFO L231 Difference]: Finished difference. Result has 86 places, 41 transitions, 286 flow [2025-02-06 18:44:24,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=286, PETRI_PLACES=86, PETRI_TRANSITIONS=41} [2025-02-06 18:44:24,568 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2025-02-06 18:44:24,568 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 41 transitions, 286 flow [2025-02-06 18:44:24,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 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 18:44:24,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:24,569 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:24,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-06 18:44:24,569 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2025-02-06 18:44:24,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash 398592816, now seen corresponding path program 2 times [2025-02-06 18:44:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:24,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925590611] [2025-02-06 18:44:24,570 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:44:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:24,576 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-02-06 18:44:24,605 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 18:44:24,605 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:44:24,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925590611] [2025-02-06 18:44:28,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925590611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:44:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979598056] [2025-02-06 18:44:28,673 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:44:28,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:44:28,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:44:28,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:44:28,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:44:28,755 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-02-06 18:44:28,863 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 18:44:28,864 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:44:28,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:28,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-02-06 18:44:28,869 INFO L279 TraceCheckSpWp]: Computing forward predicates...