./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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_06-tricky_address1.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 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:04:00,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:04:00,793 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:04:00,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:04:00,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:04:00,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:04:00,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:04:00,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:04:00,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:04:00,810 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:04:00,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:04:00,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:04:00,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:04:00,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:04:00,811 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:04:00,812 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:04:00,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:04:00,812 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:04:00,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:04:00,816 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 -> 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e [2025-02-08 14:04:01,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:04:01,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:04:01,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:04:01,205 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:04:01,205 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:04:01,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2025-02-08 14:04:02,427 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/901cdabe9/4668cb7541a34a8e9d1fc555792023b6/FLAG8c0dec01b [2025-02-08 14:04:02,708 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:04:02,708 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2025-02-08 14:04:02,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/901cdabe9/4668cb7541a34a8e9d1fc555792023b6/FLAG8c0dec01b [2025-02-08 14:04:02,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/901cdabe9/4668cb7541a34a8e9d1fc555792023b6 [2025-02-08 14:04:02,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:04:02,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:04:02,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:04:02,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:04:02,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:04:02,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:04:02" (1/1) ... [2025-02-08 14:04:02,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29f72166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:02, skipping insertion in model container [2025-02-08 14:04:02,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:04:02" (1/1) ... [2025-02-08 14:04:02,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:04:03,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:04:03,145 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:04:03,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:04:03,238 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:04:03,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03 WrapperNode [2025-02-08 14:04:03,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:04:03,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:04:03,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:04:03,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:04:03,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,275 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 130 [2025-02-08 14:04:03,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:04:03,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:04:03,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:04:03,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:04:03,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,303 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]. [2025-02-08 14:04:03,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,313 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:04:03,321 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:04:03,321 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:04:03,321 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:04:03,321 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (1/1) ... [2025-02-08 14:04:03,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:04:03,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:03,352 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) [2025-02-08 14:04:03,362 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 [2025-02-08 14:04:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 14:04:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:04:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:04:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 14:04:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:04:03,377 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-08 14:04:03,377 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-08 14:04:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:04:03,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:04:03,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:04:03,379 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:04:03,481 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:04:03,482 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:04:03,701 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:04:03,702 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:04:04,033 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:04:04,033 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:04:04,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:04:04 BoogieIcfgContainer [2025-02-08 14:04:04,033 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:04:04,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:04:04,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:04:04,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:04:04,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:04:02" (1/3) ... [2025-02-08 14:04:04,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bb261b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:04:04, skipping insertion in model container [2025-02-08 14:04:04,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:04:03" (2/3) ... [2025-02-08 14:04:04,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bb261b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:04:04, skipping insertion in model container [2025-02-08 14:04:04,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:04:04" (3/3) ... [2025-02-08 14:04:04,046 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2025-02-08 14:04:04,068 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:04:04,073 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_06-tricky_address1.i that has 2 procedures, 27 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2025-02-08 14:04:04,074 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:04:04,120 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 14:04:04,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2025-02-08 14:04:04,184 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2025-02-08 14:04:04,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:04:04,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 7. Up to 2 conditions per place. [2025-02-08 14:04:04,187 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2025-02-08 14:04:04,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2025-02-08 14:04:04,193 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:04:04,199 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;@151e45ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:04:04,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-02-08 14:04:04,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:04:04,202 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:04:04,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:04:04,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:04,203 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:04:04,203 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:04,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash 317381, now seen corresponding path program 1 times [2025-02-08 14:04:04,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:04,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580348737] [2025-02-08 14:04:04,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:04,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:04,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:04:04,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:04:04,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:04,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:04,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:04,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580348737] [2025-02-08 14:04:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580348737] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:04,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:04,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:04:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938262391] [2025-02-08 14:04:04,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:04,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:04:04,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:04,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:04:04,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:04:04,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:04,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 55 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-02-08 14:04:04,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:04,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:04,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:04,532 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2025-02-08 14:04:04,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:04:04,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 119 events. 37/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 402 event pairs, 36 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 192. Up to 92 conditions per place. [2025-02-08 14:04:04,535 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 18 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2025-02-08 14:04:04,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 101 flow [2025-02-08 14:04:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:04:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:04:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-02-08 14:04:04,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-02-08 14:04:04,546 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 56 transitions. [2025-02-08 14:04:04,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 101 flow [2025-02-08 14:04:04,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:04:04,553 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2025-02-08 14:04:04,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2025-02-08 14:04:04,556 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2025-02-08 14:04:04,556 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2025-02-08 14:04:04,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-02-08 14:04:04,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:04,556 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 14:04:04,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:04:04,557 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:04,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash 865417695, now seen corresponding path program 1 times [2025-02-08 14:04:04,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:04,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902771674] [2025-02-08 14:04:04,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:04,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:04,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:04:04,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:04:04,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:04,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:04,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:04,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902771674] [2025-02-08 14:04:04,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902771674] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:04,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184795564] [2025-02-08 14:04:04,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:04,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:04,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:04,706 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) [2025-02-08 14:04:04,710 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 [2025-02-08 14:04:04,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:04:04,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:04:04,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:04,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:04,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:04:04,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:04,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:04:04,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184795564] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:04,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:04:04,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 14:04:04,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132287324] [2025-02-08 14:04:04,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:04,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:04:04,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:04,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:04:04,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:04:04,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:04,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2025-02-08 14:04:04,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:04,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:04,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:04,874 INFO L124 PetriNetUnfolderBase]: 37/118 cut-off events. [2025-02-08 14:04:04,874 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:04:04,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 118 events. 37/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 398 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 209. Up to 87 conditions per place. [2025-02-08 14:04:04,876 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 14 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2025-02-08 14:04:04,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 114 flow [2025-02-08 14:04:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:04:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:04:04,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2025-02-08 14:04:04,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2025-02-08 14:04:04,877 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 69 transitions. [2025-02-08 14:04:04,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 114 flow [2025-02-08 14:04:04,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:04:04,878 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2025-02-08 14:04:04,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2025-02-08 14:04:04,878 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2025-02-08 14:04:04,879 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2025-02-08 14:04:04,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2025-02-08 14:04:04,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:04,879 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:04:04,885 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 [2025-02-08 14:04:05,079 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 [2025-02-08 14:04:05,080 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:05,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:05,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1058145024, now seen corresponding path program 1 times [2025-02-08 14:04:05,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:05,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955763013] [2025-02-08 14:04:05,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:05,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:05,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:04:05,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:04:05,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:05,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:04:05,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955763013] [2025-02-08 14:04:05,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955763013] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:05,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:05,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:04:05,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252654907] [2025-02-08 14:04:05,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:05,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:04:05,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:05,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:04:05,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:04:05,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:05,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2025-02-08 14:04:05,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:05,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:05,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:05,203 INFO L124 PetriNetUnfolderBase]: 37/117 cut-off events. [2025-02-08 14:04:05,204 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-08 14:04:05,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 117 events. 37/117 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 36 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 205. Up to 90 conditions per place. [2025-02-08 14:04:05,204 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 15 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2025-02-08 14:04:05,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 118 flow [2025-02-08 14:04:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:04:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:04:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2025-02-08 14:04:05,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-02-08 14:04:05,205 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 42 transitions. [2025-02-08 14:04:05,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 118 flow [2025-02-08 14:04:05,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-08 14:04:05,206 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2025-02-08 14:04:05,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2025-02-08 14:04:05,206 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2025-02-08 14:04:05,207 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2025-02-08 14:04:05,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2025-02-08 14:04:05,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:05,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:05,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:04:05,207 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:05,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:05,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1803782504, now seen corresponding path program 1 times [2025-02-08 14:04:05,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:05,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591814400] [2025-02-08 14:04:05,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:05,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:05,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:04:05,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:04:05,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:05,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:05,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591814400] [2025-02-08 14:04:05,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591814400] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368764956] [2025-02-08 14:04:05,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:05,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:05,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:05,282 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) [2025-02-08 14:04:05,283 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 [2025-02-08 14:04:05,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:04:05,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:04:05,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:05,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:05,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:04:05,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:05,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:04:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:05,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368764956] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:04:05,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:04:05,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-08 14:04:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512651912] [2025-02-08 14:04:05,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:04:05,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:05,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:05,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:05,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:05,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:05,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 66 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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) [2025-02-08 14:04:05,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:05,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:05,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:05,477 INFO L124 PetriNetUnfolderBase]: 37/121 cut-off events. [2025-02-08 14:04:05,477 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-02-08 14:04:05,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 121 events. 37/121 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 390 event pairs, 36 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 198. Up to 88 conditions per place. [2025-02-08 14:04:05,479 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2025-02-08 14:04:05,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 125 flow [2025-02-08 14:04:05,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 14:04:05,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 14:04:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2025-02-08 14:04:05,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2025-02-08 14:04:05,480 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 80 transitions. [2025-02-08 14:04:05,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 125 flow [2025-02-08 14:04:05,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:04:05,481 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2025-02-08 14:04:05,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2025-02-08 14:04:05,482 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2025-02-08 14:04:05,482 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2025-02-08 14:04:05,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 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) [2025-02-08 14:04:05,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:05,482 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:05,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:04:05,682 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 [2025-02-08 14:04:05,683 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:05,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:05,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1439666984, now seen corresponding path program 2 times [2025-02-08 14:04:05,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:05,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140747286] [2025-02-08 14:04:05,684 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:05,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:05,700 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-08 14:04:05,725 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 16 statements. [2025-02-08 14:04:05,725 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:04:05,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:04:06,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:06,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140747286] [2025-02-08 14:04:06,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140747286] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:06,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:06,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:04:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009990061] [2025-02-08 14:04:06,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:06,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:04:06,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:06,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:04:06,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:04:06,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:06,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2025-02-08 14:04:06,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:06,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:06,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:06,655 INFO L124 PetriNetUnfolderBase]: 43/128 cut-off events. [2025-02-08 14:04:06,656 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-08 14:04:06,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 128 events. 43/128 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 386 event pairs, 18 based on Foata normal form. 7/129 useless extension candidates. Maximal degree in co-relation 222. Up to 73 conditions per place. [2025-02-08 14:04:06,656 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 28 selfloop transitions, 5 changer transitions 6/44 dead transitions. [2025-02-08 14:04:06,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 200 flow [2025-02-08 14:04:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:04:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:04:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-02-08 14:04:06,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2025-02-08 14:04:06,657 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 6 states and 86 transitions. [2025-02-08 14:04:06,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 200 flow [2025-02-08 14:04:06,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 14:04:06,659 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 115 flow [2025-02-08 14:04:06,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2025-02-08 14:04:06,659 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2025-02-08 14:04:06,659 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 115 flow [2025-02-08 14:04:06,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2025-02-08 14:04:06,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:06,660 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:06,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:04:06,660 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:06,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:06,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1439391265, now seen corresponding path program 1 times [2025-02-08 14:04:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:06,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906580092] [2025-02-08 14:04:06,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:06,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:06,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:04:06,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:04:06,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:06,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:06,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:06,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906580092] [2025-02-08 14:04:06,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906580092] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:06,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728897824] [2025-02-08 14:04:06,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:06,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:06,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:06,753 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) [2025-02-08 14:04:06,754 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 [2025-02-08 14:04:06,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:04:06,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:04:06,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:06,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:06,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:04:06,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:06,843 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:04:06,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:06,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728897824] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:04:06,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:04:06,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-08 14:04:06,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758889466] [2025-02-08 14:04:06,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:04:06,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 14:04:06,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:06,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 14:04:06,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-08 14:04:06,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:06,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 115 flow. Second operand has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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) [2025-02-08 14:04:06,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:06,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:06,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:07,048 INFO L124 PetriNetUnfolderBase]: 27/117 cut-off events. [2025-02-08 14:04:07,048 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2025-02-08 14:04:07,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 117 events. 27/117 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 326 event pairs, 26 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 253. Up to 69 conditions per place. [2025-02-08 14:04:07,049 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 15 changer transitions 0/38 dead transitions. [2025-02-08 14:04:07,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 225 flow [2025-02-08 14:04:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 14:04:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 14:04:07,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2025-02-08 14:04:07,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3802469135802469 [2025-02-08 14:04:07,050 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 115 flow. Second operand 15 states and 154 transitions. [2025-02-08 14:04:07,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 225 flow [2025-02-08 14:04:07,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 38 transitions, 216 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-08 14:04:07,052 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 203 flow [2025-02-08 14:04:07,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=203, PETRI_PLACES=57, PETRI_TRANSITIONS=38} [2025-02-08 14:04:07,052 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2025-02-08 14:04:07,053 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 203 flow [2025-02-08 14:04:07,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 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) [2025-02-08 14:04:07,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:07,053 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:07,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 14:04:07,253 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 [2025-02-08 14:04:07,254 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:07,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1906606497, now seen corresponding path program 2 times [2025-02-08 14:04:07,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:07,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368460006] [2025-02-08 14:04:07,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:07,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:07,262 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-08 14:04:07,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 28 statements. [2025-02-08 14:04:07,282 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:04:07,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 14:04:07,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:07,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368460006] [2025-02-08 14:04:07,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368460006] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:07,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:04:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166747009] [2025-02-08 14:04:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:07,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 14:04:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:07,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 14:04:07,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 14:04:07,699 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:07,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2025-02-08 14:04:07,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:07,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:07,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:07,840 INFO L124 PetriNetUnfolderBase]: 30/119 cut-off events. [2025-02-08 14:04:07,840 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2025-02-08 14:04:07,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 119 events. 30/119 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 320 event pairs, 8 based on Foata normal form. 14/133 useless extension candidates. Maximal degree in co-relation 208. Up to 51 conditions per place. [2025-02-08 14:04:07,841 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 38 selfloop transitions, 6 changer transitions 4/53 dead transitions. [2025-02-08 14:04:07,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 341 flow [2025-02-08 14:04:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:04:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:04:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-02-08 14:04:07,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2025-02-08 14:04:07,842 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 203 flow. Second operand 6 states and 87 transitions. [2025-02-08 14:04:07,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 341 flow [2025-02-08 14:04:07,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 331 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-08 14:04:07,845 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 233 flow [2025-02-08 14:04:07,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2025-02-08 14:04:07,845 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2025-02-08 14:04:07,846 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 233 flow [2025-02-08 14:04:07,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2025-02-08 14:04:07,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:07,846 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:07,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 14:04:07,846 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:07,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:07,847 INFO L85 PathProgramCache]: Analyzing trace with hash 182987561, now seen corresponding path program 1 times [2025-02-08 14:04:07,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:07,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479916628] [2025-02-08 14:04:07,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:07,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:07,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 14:04:07,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 14:04:07,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:07,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:08,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:08,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479916628] [2025-02-08 14:04:08,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479916628] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:04:08,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340092037] [2025-02-08 14:04:08,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:08,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:04:08,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:04:08,115 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) [2025-02-08 14:04:08,117 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 [2025-02-08 14:04:08,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-08 14:04:08,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 14:04:08,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:08,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:08,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 14:04:08,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:04:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:08,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:04:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:04:08,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340092037] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:04:08,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:04:08,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-08 14:04:08,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115746148] [2025-02-08 14:04:08,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:04:08,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 14:04:08,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:08,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 14:04:08,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-08 14:04:08,433 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:08,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 233 flow. Second operand has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 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) [2025-02-08 14:04:08,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:08,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:08,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:08,578 INFO L124 PetriNetUnfolderBase]: 26/123 cut-off events. [2025-02-08 14:04:08,578 INFO L125 PetriNetUnfolderBase]: For 168/169 co-relation queries the response was YES. [2025-02-08 14:04:08,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 123 events. 26/123 cut-off events. For 168/169 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 296 event pairs, 22 based on Foata normal form. 3/126 useless extension candidates. Maximal degree in co-relation 336. Up to 68 conditions per place. [2025-02-08 14:04:08,581 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 19 selfloop transitions, 21 changer transitions 0/47 dead transitions. [2025-02-08 14:04:08,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 47 transitions, 367 flow [2025-02-08 14:04:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 14:04:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 14:04:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 207 transitions. [2025-02-08 14:04:08,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2025-02-08 14:04:08,583 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 233 flow. Second operand 21 states and 207 transitions. [2025-02-08 14:04:08,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 47 transitions, 367 flow [2025-02-08 14:04:08,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 47 transitions, 359 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 14:04:08,587 INFO L231 Difference]: Finished difference. Result has 82 places, 47 transitions, 336 flow [2025-02-08 14:04:08,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=336, PETRI_PLACES=82, PETRI_TRANSITIONS=47} [2025-02-08 14:04:08,588 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2025-02-08 14:04:08,588 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 47 transitions, 336 flow [2025-02-08 14:04:08,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.434782608695652) internal successors, (217), 23 states have internal predecessors, (217), 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) [2025-02-08 14:04:08,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:08,589 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:08,598 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 [2025-02-08 14:04:08,789 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,SelfDestructingSolverStorable7 [2025-02-08 14:04:08,790 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:08,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash 915543637, now seen corresponding path program 2 times [2025-02-08 14:04:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:08,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895322845] [2025-02-08 14:04:08,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:08,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:08,799 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-08 14:04:08,845 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-02-08 14:04:08,845 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:04:08,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:10,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895322845] [2025-02-08 14:04:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895322845] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:10,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:10,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:10,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492988098] [2025-02-08 14:04:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:10,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:10,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:10,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:10,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:11,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-08 14:04:11,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 47 transitions, 336 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:11,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:11,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-08 14:04:11,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:12,872 INFO L124 PetriNetUnfolderBase]: 58/184 cut-off events. [2025-02-08 14:04:12,872 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-02-08 14:04:12,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 184 events. 58/184 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 582 event pairs, 12 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 409. Up to 39 conditions per place. [2025-02-08 14:04:12,873 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 60 selfloop transitions, 19 changer transitions 6/86 dead transitions. [2025-02-08 14:04:12,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 86 transitions, 632 flow [2025-02-08 14:04:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:04:12,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:04:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2025-02-08 14:04:12,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33903133903133903 [2025-02-08 14:04:12,878 INFO L175 Difference]: Start difference. First operand has 82 places, 47 transitions, 336 flow. Second operand 13 states and 119 transitions. [2025-02-08 14:04:12,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 86 transitions, 632 flow [2025-02-08 14:04:12,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 589 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-02-08 14:04:12,885 INFO L231 Difference]: Finished difference. Result has 86 places, 61 transitions, 416 flow [2025-02-08 14:04:12,885 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=416, PETRI_PLACES=86, PETRI_TRANSITIONS=61} [2025-02-08 14:04:12,885 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2025-02-08 14:04:12,886 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 416 flow [2025-02-08 14:04:12,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:12,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:12,887 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:12,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 14:04:12,887 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:12,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:12,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1583374751, now seen corresponding path program 3 times [2025-02-08 14:04:12,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:12,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424111533] [2025-02-08 14:04:12,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:04:12,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:12,898 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 11 equivalence classes. [2025-02-08 14:04:12,928 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-02-08 14:04:12,928 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:04:12,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:14,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:14,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424111533] [2025-02-08 14:04:14,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424111533] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:14,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:14,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:14,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411405629] [2025-02-08 14:04:14,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:14,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:14,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:14,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:14,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:14,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-08 14:04:14,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 61 transitions, 416 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:14,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:14,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-08 14:04:14,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:15,271 INFO L124 PetriNetUnfolderBase]: 64/207 cut-off events. [2025-02-08 14:04:15,271 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2025-02-08 14:04:15,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 207 events. 64/207 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 720 event pairs, 16 based on Foata normal form. 3/210 useless extension candidates. Maximal degree in co-relation 642. Up to 52 conditions per place. [2025-02-08 14:04:15,272 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 60 selfloop transitions, 28 changer transitions 7/96 dead transitions. [2025-02-08 14:04:15,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 96 transitions, 783 flow [2025-02-08 14:04:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 14:04:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 14:04:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 133 transitions. [2025-02-08 14:04:15,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.289760348583878 [2025-02-08 14:04:15,273 INFO L175 Difference]: Start difference. First operand has 86 places, 61 transitions, 416 flow. Second operand 17 states and 133 transitions. [2025-02-08 14:04:15,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 96 transitions, 783 flow [2025-02-08 14:04:15,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 752 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 14:04:15,277 INFO L231 Difference]: Finished difference. Result has 102 places, 72 transitions, 554 flow [2025-02-08 14:04:15,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=554, PETRI_PLACES=102, PETRI_TRANSITIONS=72} [2025-02-08 14:04:15,277 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2025-02-08 14:04:15,278 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 72 transitions, 554 flow [2025-02-08 14:04:15,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:15,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:15,278 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:15,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 14:04:15,278 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:15,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1406551862, now seen corresponding path program 1 times [2025-02-08 14:04:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499212580] [2025-02-08 14:04:15,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:15,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 14:04:15,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 14:04:15,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:15,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:17,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:17,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499212580] [2025-02-08 14:04:17,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499212580] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:17,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:17,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:17,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398853324] [2025-02-08 14:04:17,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:17,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:17,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:17,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:17,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:17,630 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-08 14:04:17,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 72 transitions, 554 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:17,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:17,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-08 14:04:17,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:18,538 INFO L124 PetriNetUnfolderBase]: 67/218 cut-off events. [2025-02-08 14:04:18,539 INFO L125 PetriNetUnfolderBase]: For 421/421 co-relation queries the response was YES. [2025-02-08 14:04:18,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 218 events. 67/218 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 786 event pairs, 28 based on Foata normal form. 3/221 useless extension candidates. Maximal degree in co-relation 721. Up to 106 conditions per place. [2025-02-08 14:04:18,540 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 65 selfloop transitions, 28 changer transitions 5/99 dead transitions. [2025-02-08 14:04:18,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 99 transitions, 882 flow [2025-02-08 14:04:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 14:04:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 14:04:18,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 126 transitions. [2025-02-08 14:04:18,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2916666666666667 [2025-02-08 14:04:18,541 INFO L175 Difference]: Start difference. First operand has 102 places, 72 transitions, 554 flow. Second operand 16 states and 126 transitions. [2025-02-08 14:04:18,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 99 transitions, 882 flow [2025-02-08 14:04:18,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 99 transitions, 833 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-02-08 14:04:18,546 INFO L231 Difference]: Finished difference. Result has 117 places, 81 transitions, 670 flow [2025-02-08 14:04:18,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=670, PETRI_PLACES=117, PETRI_TRANSITIONS=81} [2025-02-08 14:04:18,547 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 88 predicate places. [2025-02-08 14:04:18,547 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 81 transitions, 670 flow [2025-02-08 14:04:18,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:18,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:18,547 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:18,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 14:04:18,547 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:18,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:18,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1414595432, now seen corresponding path program 2 times [2025-02-08 14:04:18,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:18,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852002368] [2025-02-08 14:04:18,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:18,554 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-08 14:04:18,565 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-02-08 14:04:18,565 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:04:18,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:22,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:22,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852002368] [2025-02-08 14:04:22,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852002368] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:22,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:22,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776421920] [2025-02-08 14:04:22,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:22,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:22,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:22,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:22,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:22,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-08 14:04:22,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 81 transitions, 670 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:22,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:22,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-08 14:04:22,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:23,789 INFO L124 PetriNetUnfolderBase]: 70/230 cut-off events. [2025-02-08 14:04:23,790 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2025-02-08 14:04:23,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 230 events. 70/230 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 879 event pairs, 32 based on Foata normal form. 3/233 useless extension candidates. Maximal degree in co-relation 808. Up to 113 conditions per place. [2025-02-08 14:04:23,792 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 62 selfloop transitions, 34 changer transitions 2/99 dead transitions. [2025-02-08 14:04:23,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 99 transitions, 946 flow [2025-02-08 14:04:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 14:04:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 14:04:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 124 transitions. [2025-02-08 14:04:23,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30617283950617286 [2025-02-08 14:04:23,793 INFO L175 Difference]: Start difference. First operand has 117 places, 81 transitions, 670 flow. Second operand 15 states and 124 transitions. [2025-02-08 14:04:23,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 99 transitions, 946 flow [2025-02-08 14:04:23,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 99 transitions, 917 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-08 14:04:23,799 INFO L231 Difference]: Finished difference. Result has 130 places, 86 transitions, 775 flow [2025-02-08 14:04:23,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=775, PETRI_PLACES=130, PETRI_TRANSITIONS=86} [2025-02-08 14:04:23,800 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2025-02-08 14:04:23,800 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 86 transitions, 775 flow [2025-02-08 14:04:23,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:23,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:23,801 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:23,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 14:04:23,801 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:23,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1406205902, now seen corresponding path program 3 times [2025-02-08 14:04:23,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:23,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867651619] [2025-02-08 14:04:23,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:04:23,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:23,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 11 equivalence classes. [2025-02-08 14:04:23,830 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-02-08 14:04:23,830 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:04:23,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867651619] [2025-02-08 14:04:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867651619] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:27,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:27,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:27,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966175914] [2025-02-08 14:04:27,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:27,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:27,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:27,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:27,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:27,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-08 14:04:27,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 86 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:27,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:27,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-08 14:04:27,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:28,121 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2025-02-08 14:04:28,121 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2025-02-08 14:04:28,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 247 events. 75/247 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1018 event pairs, 27 based on Foata normal form. 3/250 useless extension candidates. Maximal degree in co-relation 949. Up to 110 conditions per place. [2025-02-08 14:04:28,122 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 72 selfloop transitions, 37 changer transitions 2/112 dead transitions. [2025-02-08 14:04:28,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 112 transitions, 1132 flow [2025-02-08 14:04:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 14:04:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 14:04:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 124 transitions. [2025-02-08 14:04:28,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30617283950617286 [2025-02-08 14:04:28,126 INFO L175 Difference]: Start difference. First operand has 130 places, 86 transitions, 775 flow. Second operand 15 states and 124 transitions. [2025-02-08 14:04:28,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 112 transitions, 1132 flow [2025-02-08 14:04:28,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 112 transitions, 1088 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-02-08 14:04:28,135 INFO L231 Difference]: Finished difference. Result has 141 places, 94 transitions, 892 flow [2025-02-08 14:04:28,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=892, PETRI_PLACES=141, PETRI_TRANSITIONS=94} [2025-02-08 14:04:28,136 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2025-02-08 14:04:28,136 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 94 transitions, 892 flow [2025-02-08 14:04:28,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 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) [2025-02-08 14:04:28,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:28,136 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:28,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 14:04:28,136 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:28,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash 104699782, now seen corresponding path program 4 times [2025-02-08 14:04:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:28,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562132672] [2025-02-08 14:04:28,137 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:04:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:28,150 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-08 14:04:28,184 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 14:04:28,184 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:04:28,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:30,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:30,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562132672] [2025-02-08 14:04:30,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562132672] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:30,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:30,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:30,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551645175] [2025-02-08 14:04:30,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:30,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:30,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:30,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:30,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:31,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-02-08 14:04:31,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 94 transitions, 892 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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) [2025-02-08 14:04:31,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:31,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-02-08 14:04:31,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:31,883 INFO L124 PetriNetUnfolderBase]: 74/253 cut-off events. [2025-02-08 14:04:31,883 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2025-02-08 14:04:31,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 253 events. 74/253 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1072 event pairs, 35 based on Foata normal form. 3/256 useless extension candidates. Maximal degree in co-relation 1033. Up to 117 conditions per place. [2025-02-08 14:04:31,885 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 71 selfloop transitions, 38 changer transitions 2/113 dead transitions. [2025-02-08 14:04:31,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 113 transitions, 1245 flow [2025-02-08 14:04:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 14:04:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 14:04:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2025-02-08 14:04:31,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2025-02-08 14:04:31,891 INFO L175 Difference]: Start difference. First operand has 141 places, 94 transitions, 892 flow. Second operand 14 states and 130 transitions. [2025-02-08 14:04:31,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 113 transitions, 1245 flow [2025-02-08 14:04:31,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 113 transitions, 1180 flow, removed 8 selfloop flow, removed 8 redundant places. [2025-02-08 14:04:31,897 INFO L231 Difference]: Finished difference. Result has 151 places, 100 transitions, 1010 flow [2025-02-08 14:04:31,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1010, PETRI_PLACES=151, PETRI_TRANSITIONS=100} [2025-02-08 14:04:31,899 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2025-02-08 14:04:31,899 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 100 transitions, 1010 flow [2025-02-08 14:04:31,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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) [2025-02-08 14:04:31,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:31,899 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:31,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 14:04:31,899 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:31,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:31,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1599087101, now seen corresponding path program 4 times [2025-02-08 14:04:31,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:31,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400339962] [2025-02-08 14:04:31,900 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:04:31,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:31,907 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-08 14:04:31,949 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 14:04:31,949 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:04:31,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:32,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:32,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400339962] [2025-02-08 14:04:32,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400339962] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:32,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:32,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 14:04:32,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286491638] [2025-02-08 14:04:32,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:32,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 14:04:32,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:32,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 14:04:32,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:04:32,651 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:32,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 100 transitions, 1010 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2025-02-08 14:04:32,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:32,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:32,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:33,133 INFO L124 PetriNetUnfolderBase]: 52/247 cut-off events. [2025-02-08 14:04:33,133 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2025-02-08 14:04:33,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 247 events. 52/247 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1233 event pairs, 13 based on Foata normal form. 9/256 useless extension candidates. Maximal degree in co-relation 1032. Up to 79 conditions per place. [2025-02-08 14:04:33,135 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 61 selfloop transitions, 30 changer transitions 11/122 dead transitions. [2025-02-08 14:04:33,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 122 transitions, 1325 flow [2025-02-08 14:04:33,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 14:04:33,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 14:04:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 182 transitions. [2025-02-08 14:04:33,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4212962962962963 [2025-02-08 14:04:33,137 INFO L175 Difference]: Start difference. First operand has 151 places, 100 transitions, 1010 flow. Second operand 16 states and 182 transitions. [2025-02-08 14:04:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 122 transitions, 1325 flow [2025-02-08 14:04:33,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 122 transitions, 1293 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-02-08 14:04:33,147 INFO L231 Difference]: Finished difference. Result has 167 places, 102 transitions, 1065 flow [2025-02-08 14:04:33,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1065, PETRI_PLACES=167, PETRI_TRANSITIONS=102} [2025-02-08 14:04:33,148 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2025-02-08 14:04:33,148 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 102 transitions, 1065 flow [2025-02-08 14:04:33,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2025-02-08 14:04:33,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:33,148 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:33,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 14:04:33,148 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:33,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:33,149 INFO L85 PathProgramCache]: Analyzing trace with hash -642303973, now seen corresponding path program 1 times [2025-02-08 14:04:33,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:33,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436614378] [2025-02-08 14:04:33,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:33,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:33,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 14:04:33,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 14:04:33,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:33,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436614378] [2025-02-08 14:04:35,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436614378] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:35,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:35,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:35,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448714841] [2025-02-08 14:04:35,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:35,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:35,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:35,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:35,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:35,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-02-08 14:04:35,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 102 transitions, 1065 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2025-02-08 14:04:35,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:35,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-02-08 14:04:35,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:35,787 INFO L124 PetriNetUnfolderBase]: 64/243 cut-off events. [2025-02-08 14:04:35,787 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES. [2025-02-08 14:04:35,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 243 events. 64/243 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1063 event pairs, 22 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 1090. Up to 79 conditions per place. [2025-02-08 14:04:35,789 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 62 selfloop transitions, 34 changer transitions 4/112 dead transitions. [2025-02-08 14:04:35,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 112 transitions, 1315 flow [2025-02-08 14:04:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 14:04:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 14:04:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2025-02-08 14:04:35,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31790123456790126 [2025-02-08 14:04:35,791 INFO L175 Difference]: Start difference. First operand has 167 places, 102 transitions, 1065 flow. Second operand 12 states and 103 transitions. [2025-02-08 14:04:35,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 112 transitions, 1315 flow [2025-02-08 14:04:35,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 112 transitions, 1233 flow, removed 9 selfloop flow, removed 17 redundant places. [2025-02-08 14:04:35,799 INFO L231 Difference]: Finished difference. Result has 156 places, 101 transitions, 1043 flow [2025-02-08 14:04:35,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1043, PETRI_PLACES=156, PETRI_TRANSITIONS=101} [2025-02-08 14:04:35,799 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2025-02-08 14:04:35,799 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 101 transitions, 1043 flow [2025-02-08 14:04:35,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 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) [2025-02-08 14:04:35,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:35,800 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:35,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 14:04:35,800 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:35,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash -642709749, now seen corresponding path program 1 times [2025-02-08 14:04:35,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:35,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568705764] [2025-02-08 14:04:35,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:35,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 14:04:35,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 14:04:35,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:35,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:38,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:38,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568705764] [2025-02-08 14:04:38,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568705764] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:38,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:38,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449924264] [2025-02-08 14:04:38,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:38,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:38,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:38,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:38,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:38,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 14:04:38,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 101 transitions, 1043 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-02-08 14:04:38,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:38,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 14:04:38,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:39,287 INFO L124 PetriNetUnfolderBase]: 53/224 cut-off events. [2025-02-08 14:04:39,288 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2025-02-08 14:04:39,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 224 events. 53/224 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1009 event pairs, 22 based on Foata normal form. 3/224 useless extension candidates. Maximal degree in co-relation 983. Up to 111 conditions per place. [2025-02-08 14:04:39,289 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 56 selfloop transitions, 33 changer transitions 7/113 dead transitions. [2025-02-08 14:04:39,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 113 transitions, 1278 flow [2025-02-08 14:04:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:04:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:04:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2025-02-08 14:04:39,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3646723646723647 [2025-02-08 14:04:39,291 INFO L175 Difference]: Start difference. First operand has 156 places, 101 transitions, 1043 flow. Second operand 13 states and 128 transitions. [2025-02-08 14:04:39,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 113 transitions, 1278 flow [2025-02-08 14:04:39,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 113 transitions, 1215 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-02-08 14:04:39,298 INFO L231 Difference]: Finished difference. Result has 160 places, 97 transitions, 1016 flow [2025-02-08 14:04:39,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1016, PETRI_PLACES=160, PETRI_TRANSITIONS=97} [2025-02-08 14:04:39,299 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2025-02-08 14:04:39,300 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 97 transitions, 1016 flow [2025-02-08 14:04:39,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-02-08 14:04:39,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:39,300 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:39,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 14:04:39,300 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:39,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:39,301 INFO L85 PathProgramCache]: Analyzing trace with hash -653434509, now seen corresponding path program 2 times [2025-02-08 14:04:39,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:39,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047162968] [2025-02-08 14:04:39,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:39,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:39,308 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-08 14:04:39,318 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-02-08 14:04:39,318 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:04:39,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:42,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:42,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047162968] [2025-02-08 14:04:42,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047162968] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:42,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:42,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:42,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948341231] [2025-02-08 14:04:42,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:42,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:42,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:42,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:42,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 14:04:42,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 97 transitions, 1016 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-02-08 14:04:42,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:42,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 14:04:42,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:43,535 INFO L124 PetriNetUnfolderBase]: 51/225 cut-off events. [2025-02-08 14:04:43,536 INFO L125 PetriNetUnfolderBase]: For 1081/1081 co-relation queries the response was YES. [2025-02-08 14:04:43,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 225 events. 51/225 cut-off events. For 1081/1081 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 995 event pairs, 25 based on Foata normal form. 6/231 useless extension candidates. Maximal degree in co-relation 1042. Up to 109 conditions per place. [2025-02-08 14:04:43,538 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 50 selfloop transitions, 30 changer transitions 13/108 dead transitions. [2025-02-08 14:04:43,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 108 transitions, 1261 flow [2025-02-08 14:04:43,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:04:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:04:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 125 transitions. [2025-02-08 14:04:43,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3561253561253561 [2025-02-08 14:04:43,541 INFO L175 Difference]: Start difference. First operand has 160 places, 97 transitions, 1016 flow. Second operand 13 states and 125 transitions. [2025-02-08 14:04:43,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 108 transitions, 1261 flow [2025-02-08 14:04:43,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 108 transitions, 1159 flow, removed 2 selfloop flow, removed 15 redundant places. [2025-02-08 14:04:43,547 INFO L231 Difference]: Finished difference. Result has 155 places, 91 transitions, 918 flow [2025-02-08 14:04:43,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=918, PETRI_PLACES=155, PETRI_TRANSITIONS=91} [2025-02-08 14:04:43,548 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2025-02-08 14:04:43,548 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 91 transitions, 918 flow [2025-02-08 14:04:43,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-02-08 14:04:43,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:43,548 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:43,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 14:04:43,548 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:43,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:43,549 INFO L85 PathProgramCache]: Analyzing trace with hash 9261233, now seen corresponding path program 1 times [2025-02-08 14:04:43,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:43,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811573051] [2025-02-08 14:04:43,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:43,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:43,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 14:04:43,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 14:04:43,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:43,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:44,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:44,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811573051] [2025-02-08 14:04:44,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811573051] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:44,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:44,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 14:04:44,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365095622] [2025-02-08 14:04:44,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:44,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 14:04:44,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:44,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:04:44,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:04:44,941 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 14:04:44,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 91 transitions, 918 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:44,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:44,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 14:04:44,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:45,788 INFO L124 PetriNetUnfolderBase]: 46/217 cut-off events. [2025-02-08 14:04:45,788 INFO L125 PetriNetUnfolderBase]: For 940/940 co-relation queries the response was YES. [2025-02-08 14:04:45,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 217 events. 46/217 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 960 event pairs, 21 based on Foata normal form. 8/225 useless extension candidates. Maximal degree in co-relation 956. Up to 91 conditions per place. [2025-02-08 14:04:45,792 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 54 selfloop transitions, 17 changer transitions 20/104 dead transitions. [2025-02-08 14:04:45,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 104 transitions, 1178 flow [2025-02-08 14:04:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:04:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:04:45,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2025-02-08 14:04:45,796 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39094650205761317 [2025-02-08 14:04:45,796 INFO L175 Difference]: Start difference. First operand has 155 places, 91 transitions, 918 flow. Second operand 9 states and 95 transitions. [2025-02-08 14:04:45,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 104 transitions, 1178 flow [2025-02-08 14:04:45,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 104 transitions, 1062 flow, removed 3 selfloop flow, removed 15 redundant places. [2025-02-08 14:04:45,807 INFO L231 Difference]: Finished difference. Result has 144 places, 80 transitions, 733 flow [2025-02-08 14:04:45,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=733, PETRI_PLACES=144, PETRI_TRANSITIONS=80} [2025-02-08 14:04:45,807 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 115 predicate places. [2025-02-08 14:04:45,808 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 80 transitions, 733 flow [2025-02-08 14:04:45,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:45,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:45,808 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:45,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 14:04:45,808 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:45,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 816153173, now seen corresponding path program 3 times [2025-02-08 14:04:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:45,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528999533] [2025-02-08 14:04:45,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:04:45,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:45,819 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 11 equivalence classes. [2025-02-08 14:04:45,827 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-02-08 14:04:45,827 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:04:45,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:48,594 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:48,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:48,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528999533] [2025-02-08 14:04:48,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528999533] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:48,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:48,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:48,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395725339] [2025-02-08 14:04:48,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:48,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:48,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:48,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:48,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:48,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 14:04:48,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 80 transitions, 733 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-02-08 14:04:48,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:48,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 14:04:48,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:49,555 INFO L124 PetriNetUnfolderBase]: 34/166 cut-off events. [2025-02-08 14:04:49,556 INFO L125 PetriNetUnfolderBase]: For 591/591 co-relation queries the response was YES. [2025-02-08 14:04:49,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 166 events. 34/166 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 580 event pairs, 18 based on Foata normal form. 3/169 useless extension candidates. Maximal degree in co-relation 700. Up to 80 conditions per place. [2025-02-08 14:04:49,557 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 46 selfloop transitions, 18 changer transitions 14/88 dead transitions. [2025-02-08 14:04:49,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 88 transitions, 904 flow [2025-02-08 14:04:49,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:04:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:04:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 121 transitions. [2025-02-08 14:04:49,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34472934472934474 [2025-02-08 14:04:49,558 INFO L175 Difference]: Start difference. First operand has 144 places, 80 transitions, 733 flow. Second operand 13 states and 121 transitions. [2025-02-08 14:04:49,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 88 transitions, 904 flow [2025-02-08 14:04:49,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 88 transitions, 845 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-02-08 14:04:49,562 INFO L231 Difference]: Finished difference. Result has 140 places, 71 transitions, 624 flow [2025-02-08 14:04:49,562 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=624, PETRI_PLACES=140, PETRI_TRANSITIONS=71} [2025-02-08 14:04:49,562 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2025-02-08 14:04:49,562 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 71 transitions, 624 flow [2025-02-08 14:04:49,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-02-08 14:04:49,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:49,563 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:49,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 14:04:49,563 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:49,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1961412266, now seen corresponding path program 1 times [2025-02-08 14:04:49,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:49,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352007414] [2025-02-08 14:04:49,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:49,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:49,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-08 14:04:49,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 14:04:49,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:49,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:50,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:50,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352007414] [2025-02-08 14:04:50,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352007414] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:50,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:50,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 14:04:50,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90603265] [2025-02-08 14:04:50,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:50,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 14:04:50,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:50,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 14:04:50,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:04:50,484 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-02-08 14:04:50,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 71 transitions, 624 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:50,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:50,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-02-08 14:04:50,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:50,980 INFO L124 PetriNetUnfolderBase]: 32/148 cut-off events. [2025-02-08 14:04:50,980 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2025-02-08 14:04:50,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 148 events. 32/148 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 451 event pairs, 8 based on Foata normal form. 2/150 useless extension candidates. Maximal degree in co-relation 608. Up to 47 conditions per place. [2025-02-08 14:04:50,981 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 51 selfloop transitions, 26 changer transitions 0/82 dead transitions. [2025-02-08 14:04:50,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 82 transitions, 820 flow [2025-02-08 14:04:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 14:04:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 14:04:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 108 transitions. [2025-02-08 14:04:50,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2025-02-08 14:04:50,982 INFO L175 Difference]: Start difference. First operand has 140 places, 71 transitions, 624 flow. Second operand 13 states and 108 transitions. [2025-02-08 14:04:50,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 82 transitions, 820 flow [2025-02-08 14:04:50,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 82 transitions, 727 flow, removed 3 selfloop flow, removed 18 redundant places. [2025-02-08 14:04:50,985 INFO L231 Difference]: Finished difference. Result has 123 places, 75 transitions, 600 flow [2025-02-08 14:04:50,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=600, PETRI_PLACES=123, PETRI_TRANSITIONS=75} [2025-02-08 14:04:50,986 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2025-02-08 14:04:50,986 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 75 transitions, 600 flow [2025-02-08 14:04:50,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:04:50,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:50,986 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:50,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 14:04:50,987 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:50,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:50,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1049273801, now seen corresponding path program 4 times [2025-02-08 14:04:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:50,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431616392] [2025-02-08 14:04:50,987 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:04:50,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:50,993 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-02-08 14:04:51,011 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-08 14:04:51,011 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:04:51,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:52,677 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:52,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431616392] [2025-02-08 14:04:52,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431616392] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:52,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:52,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 14:04:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87595358] [2025-02-08 14:04:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:52,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 14:04:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:52,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 14:04:52,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:04:52,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-08 14:04:52,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 75 transitions, 600 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2025-02-08 14:04:52,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:52,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-08 14:04:52,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:53,421 INFO L124 PetriNetUnfolderBase]: 23/133 cut-off events. [2025-02-08 14:04:53,421 INFO L125 PetriNetUnfolderBase]: For 297/297 co-relation queries the response was YES. [2025-02-08 14:04:53,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 133 events. 23/133 cut-off events. For 297/297 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 394 event pairs, 9 based on Foata normal form. 3/136 useless extension candidates. Maximal degree in co-relation 485. Up to 52 conditions per place. [2025-02-08 14:04:53,425 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 45 selfloop transitions, 14 changer transitions 13/80 dead transitions. [2025-02-08 14:04:53,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 80 transitions, 752 flow [2025-02-08 14:04:53,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 14:04:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 14:04:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2025-02-08 14:04:53,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41358024691358025 [2025-02-08 14:04:53,432 INFO L175 Difference]: Start difference. First operand has 123 places, 75 transitions, 600 flow. Second operand 12 states and 134 transitions. [2025-02-08 14:04:53,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 80 transitions, 752 flow [2025-02-08 14:04:53,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 80 transitions, 701 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-02-08 14:04:53,435 INFO L231 Difference]: Finished difference. Result has 127 places, 66 transitions, 509 flow [2025-02-08 14:04:53,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=509, PETRI_PLACES=127, PETRI_TRANSITIONS=66} [2025-02-08 14:04:53,440 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2025-02-08 14:04:53,440 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 66 transitions, 509 flow [2025-02-08 14:04:53,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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) [2025-02-08 14:04:53,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:53,440 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:53,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 14:04:53,440 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:53,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash -39110799, now seen corresponding path program 2 times [2025-02-08 14:04:53,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916205946] [2025-02-08 14:04:53,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:04:53,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:53,451 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-08 14:04:53,475 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-02-08 14:04:53,475 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:04:53,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:55,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:55,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916205946] [2025-02-08 14:04:55,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916205946] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:55,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:55,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 14:04:55,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516391238] [2025-02-08 14:04:55,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:55,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:04:55,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:55,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:04:55,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:04:55,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 14:04:55,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 66 transitions, 509 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-02-08 14:04:55,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:55,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 14:04:55,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:56,190 INFO L124 PetriNetUnfolderBase]: 22/119 cut-off events. [2025-02-08 14:04:56,190 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2025-02-08 14:04:56,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 119 events. 22/119 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 291 event pairs, 5 based on Foata normal form. 3/122 useless extension candidates. Maximal degree in co-relation 474. Up to 49 conditions per place. [2025-02-08 14:04:56,191 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 47 selfloop transitions, 11 changer transitions 10/75 dead transitions. [2025-02-08 14:04:56,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 75 transitions, 679 flow [2025-02-08 14:04:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 14:04:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-08 14:04:56,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2025-02-08 14:04:56,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2025-02-08 14:04:56,194 INFO L175 Difference]: Start difference. First operand has 127 places, 66 transitions, 509 flow. Second operand 11 states and 103 transitions. [2025-02-08 14:04:56,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 75 transitions, 679 flow [2025-02-08 14:04:56,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 75 transitions, 623 flow, removed 4 selfloop flow, removed 15 redundant places. [2025-02-08 14:04:56,196 INFO L231 Difference]: Finished difference. Result has 114 places, 62 transitions, 448 flow [2025-02-08 14:04:56,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=448, PETRI_PLACES=114, PETRI_TRANSITIONS=62} [2025-02-08 14:04:56,196 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2025-02-08 14:04:56,197 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 62 transitions, 448 flow [2025-02-08 14:04:56,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2025-02-08 14:04:56,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:56,197 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:56,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 14:04:56,197 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:56,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:56,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1563413570, now seen corresponding path program 1 times [2025-02-08 14:04:56,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:56,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189648341] [2025-02-08 14:04:56,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:56,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:56,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-08 14:04:56,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 14:04:56,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:56,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:04:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:04:58,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:04:58,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189648341] [2025-02-08 14:04:58,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189648341] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:04:58,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:04:58,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 14:04:58,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999419855] [2025-02-08 14:04:58,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:04:58,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 14:04:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:04:58,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 14:04:58,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:04:58,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 14:04:58,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 62 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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) [2025-02-08 14:04:58,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:04:58,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 14:04:58,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:04:58,948 INFO L124 PetriNetUnfolderBase]: 18/103 cut-off events. [2025-02-08 14:04:58,948 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2025-02-08 14:04:58,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 103 events. 18/103 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 3 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 389. Up to 31 conditions per place. [2025-02-08 14:04:58,949 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 38 selfloop transitions, 8 changer transitions 14/65 dead transitions. [2025-02-08 14:04:58,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 65 transitions, 568 flow [2025-02-08 14:04:58,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:04:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:04:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2025-02-08 14:04:58,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2025-02-08 14:04:58,950 INFO L175 Difference]: Start difference. First operand has 114 places, 62 transitions, 448 flow. Second operand 10 states and 90 transitions. [2025-02-08 14:04:58,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 65 transitions, 568 flow [2025-02-08 14:04:58,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 65 transitions, 524 flow, removed 3 selfloop flow, removed 13 redundant places. [2025-02-08 14:04:58,952 INFO L231 Difference]: Finished difference. Result has 104 places, 51 transitions, 364 flow [2025-02-08 14:04:58,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=104, PETRI_TRANSITIONS=51} [2025-02-08 14:04:58,952 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2025-02-08 14:04:58,952 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 51 transitions, 364 flow [2025-02-08 14:04:58,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 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) [2025-02-08 14:04:58,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:04:58,953 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:04:58,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-08 14:04:58,953 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:04:58,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:04:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash -211078, now seen corresponding path program 1 times [2025-02-08 14:04:58,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:04:58,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754168382] [2025-02-08 14:04:58,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:04:58,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:04:58,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-08 14:04:58,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 14:04:58,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:04:58,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:05:00,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:00,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754168382] [2025-02-08 14:05:00,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754168382] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:05:00,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:05:00,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 14:05:00,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973019727] [2025-02-08 14:05:00,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:05:00,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 14:05:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:00,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 14:05:00,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:05:00,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 14:05:00,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 51 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2025-02-08 14:05:00,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:00,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 14:05:00,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:05:01,343 INFO L124 PetriNetUnfolderBase]: 9/72 cut-off events. [2025-02-08 14:05:01,343 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2025-02-08 14:05:01,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 72 events. 9/72 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 1 based on Foata normal form. 2/74 useless extension candidates. Maximal degree in co-relation 282. Up to 26 conditions per place. [2025-02-08 14:05:01,344 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 37 selfloop transitions, 3 changer transitions 13/56 dead transitions. [2025-02-08 14:05:01,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 56 transitions, 489 flow [2025-02-08 14:05:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:05:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:05:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2025-02-08 14:05:01,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3292181069958848 [2025-02-08 14:05:01,345 INFO L175 Difference]: Start difference. First operand has 104 places, 51 transitions, 364 flow. Second operand 9 states and 80 transitions. [2025-02-08 14:05:01,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 56 transitions, 489 flow [2025-02-08 14:05:01,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 56 transitions, 445 flow, removed 4 selfloop flow, removed 11 redundant places. [2025-02-08 14:05:01,347 INFO L231 Difference]: Finished difference. Result has 86 places, 43 transitions, 298 flow [2025-02-08 14:05:01,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=298, PETRI_PLACES=86, PETRI_TRANSITIONS=43} [2025-02-08 14:05:01,347 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2025-02-08 14:05:01,347 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 43 transitions, 298 flow [2025-02-08 14:05:01,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 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) [2025-02-08 14:05:01,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:05:01,348 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:05:01,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-08 14:05:01,348 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-08 14:05:01,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:05:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash 674238378, now seen corresponding path program 2 times [2025-02-08 14:05:01,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:05:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678988382] [2025-02-08 14:05:01,349 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:05:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:05:01,356 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-02-08 14:05:01,387 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 14:05:01,388 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:05:01,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:05:02,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:05:02,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678988382] [2025-02-08 14:05:02,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678988382] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:05:02,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980539667] [2025-02-08 14:05:02,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:05:02,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:05:02,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:05:02,622 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) [2025-02-08 14:05:02,624 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 [2025-02-08 14:05:02,688 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-02-08 14:05:02,806 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-08 14:05:02,806 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:05:02,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:05:02,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-02-08 14:05:02,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:05:04,677 INFO L349 Elim1Store]: treesize reduction 257, result has 30.7 percent of original size [2025-02-08 14:05:04,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 68 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 88 case distinctions, treesize of input 121 treesize of output 175 [2025-02-08 14:05:06,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 14:05:06,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 68 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 499 treesize of output 309 [2025-02-08 14:05:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:05:08,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:05:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-08 14:05:29,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980539667] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:05:29,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:05:29,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 24, 6] total 36 [2025-02-08 14:05:29,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726687032] [2025-02-08 14:05:29,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:05:29,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-08 14:05:29,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:05:29,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-08 14:05:29,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2025-02-08 14:05:30,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-08 14:05:30,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 43 transitions, 298 flow. Second operand has 38 states, 38 states have (on average 5.552631578947368) internal successors, (211), 38 states have internal predecessors, (211), 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) [2025-02-08 14:05:30,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:05:30,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-08 14:05:30,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand