./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:42:59,066 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:42:59,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:42:59,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:42:59,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:42:59,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:42:59,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:42:59,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:42:59,130 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:42:59,130 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:42:59,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:42:59,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:42:59,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:42:59,130 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:42:59,130 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:42:59,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:42:59,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:42:59,130 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:42:59,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:42:59,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:42:59,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:42:59,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:42:59,131 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:42:59,131 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:42:59,131 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:42:59,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:42:59,135 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:42:59,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:42:59,135 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:42:59,135 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 -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 [2025-02-06 18:42:59,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:42:59,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:42:59,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:42:59,328 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:42:59,328 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:42:59,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2025-02-06 18:43:00,496 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ffa24ffe6/0a597810bf0041b0b757b5c62ef8af8f/FLAG862b9f832 [2025-02-06 18:43:00,824 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:43:00,825 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_07-tricky_address2.i [2025-02-06 18:43:00,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ffa24ffe6/0a597810bf0041b0b757b5c62ef8af8f/FLAG862b9f832 [2025-02-06 18:43:01,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ffa24ffe6/0a597810bf0041b0b757b5c62ef8af8f [2025-02-06 18:43:01,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:43:01,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:43:01,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:43:01,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:43:01,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:43:01,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df9af40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01, skipping insertion in model container [2025-02-06 18:43:01,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:43:01,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:43:01,453 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:43:01,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:43:01,518 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:43:01,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01 WrapperNode [2025-02-06 18:43:01,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:43:01,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:43:01,520 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:43:01,520 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:43:01,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,548 INFO L138 Inliner]: procedures = 265, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 130 [2025-02-06 18:43:01,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:43:01,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:43:01,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:43:01,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:43:01,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,579 INFO L175 MemorySlicer]: Split 64 memory accesses to 1 slices as follows [64]. 100 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [60]. The 2 writes are split as follows [2]. [2025-02-06 18:43:01,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,588 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,592 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:43:01,600 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:43:01,600 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:43:01,600 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:43:01,601 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (1/1) ... [2025-02-06 18:43:01,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:43:01,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:01,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:43:01,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:43:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 18:43:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:43:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:43:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 18:43:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:43:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 18:43:01,649 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 18:43:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:43:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:43:01,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:43:01,650 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:43:01,754 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:43:01,756 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:43:01,911 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:43:01,911 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:43:02,158 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:43:02,158 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:43:02,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:02 BoogieIcfgContainer [2025-02-06 18:43:02,159 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:43:02,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:43:02,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:43:02,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:43:02,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:43:01" (1/3) ... [2025-02-06 18:43:02,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295e87a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:43:02, skipping insertion in model container [2025-02-06 18:43:02,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:43:01" (2/3) ... [2025-02-06 18:43:02,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295e87a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:43:02, skipping insertion in model container [2025-02-06 18:43:02,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:43:02" (3/3) ... [2025-02-06 18:43:02,165 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2025-02-06 18:43:02,173 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:43:02,175 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_07-tricky_address2.i that has 2 procedures, 27 locations, 1 initial locations, 1 loop locations, and 6 error locations. [2025-02-06 18:43:02,175 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:43:02,207 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:43:02,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 58 flow [2025-02-06 18:43:02,245 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2025-02-06 18:43:02,247 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:02,248 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. [2025-02-06 18:43:02,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 58 flow [2025-02-06 18:43:02,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 55 flow [2025-02-06 18:43:02,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:43:02,261 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;@6706216d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:43:02,261 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-02-06 18:43:02,265 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:43:02,265 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-06 18:43:02,265 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:02,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:02,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-06 18:43:02,266 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)] === [2025-02-06 18:43:02,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash 318374, now seen corresponding path program 1 times [2025-02-06 18:43:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:02,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160661082] [2025-02-06 18:43:02,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:02,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:43:02,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:43:02,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:02,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:02,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:02,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:02,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160661082] [2025-02-06 18:43:02,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160661082] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:02,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:02,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:43:02,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277063835] [2025-02-06 18:43:02,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:02,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:43:02,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:02,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:43:02,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:43:02,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:43:02,565 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) [2025-02-06 18:43:02,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:02,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:43:02,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:02,669 INFO L124 PetriNetUnfolderBase]: 37/119 cut-off events. [2025-02-06 18:43:02,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:43:02,670 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. [2025-02-06 18:43:02,675 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 18 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2025-02-06 18:43:02,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 101 flow [2025-02-06 18:43:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:43:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:43:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-02-06 18:43:02,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-02-06 18:43:02,697 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 55 flow. Second operand 4 states and 56 transitions. [2025-02-06 18:43:02,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 101 flow [2025-02-06 18:43:02,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:43:02,705 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 78 flow [2025-02-06 18:43:02,707 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} [2025-02-06 18:43:02,714 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2025-02-06 18:43:02,715 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 78 flow [2025-02-06 18:43:02,715 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) [2025-02-06 18:43:02,715 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:02,718 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:43:02,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:43:02,719 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)] === [2025-02-06 18:43:02,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:02,719 INFO L85 PathProgramCache]: Analyzing trace with hash 895001151, now seen corresponding path program 1 times [2025-02-06 18:43:02,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:02,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924212804] [2025-02-06 18:43:02,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:02,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:43:02,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:43:02,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:02,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:02,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:02,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924212804] [2025-02-06 18:43:02,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924212804] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:02,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74638613] [2025-02-06 18:43:02,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:02,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:02,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:02,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:43:02,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 18:43:02,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:43:02,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:43:02,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:02,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:02,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 18:43:02,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:02,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 18:43:02,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74638613] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:02,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 18:43:02,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 18:43:02,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112945780] [2025-02-06 18:43:02,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:02,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:02,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:02,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:02,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:43:02,982 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:43:02,982 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) [2025-02-06 18:43:02,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:02,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:43:02,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:03,108 INFO L124 PetriNetUnfolderBase]: 37/118 cut-off events. [2025-02-06 18:43:03,108 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:43:03,109 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. [2025-02-06 18:43:03,109 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 14 selfloop transitions, 6 changer transitions 0/27 dead transitions. [2025-02-06 18:43:03,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 114 flow [2025-02-06 18:43:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2025-02-06 18:43:03,110 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2025-02-06 18:43:03,110 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 78 flow. Second operand 6 states and 69 transitions. [2025-02-06 18:43:03,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 114 flow [2025-02-06 18:43:03,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:43:03,111 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 84 flow [2025-02-06 18:43:03,111 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} [2025-02-06 18:43:03,112 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2025-02-06 18:43:03,112 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 84 flow [2025-02-06 18:43:03,112 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) [2025-02-06 18:43:03,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:03,112 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-06 18:43:03,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 18:43:03,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:03,313 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)] === [2025-02-06 18:43:03,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1975232161, now seen corresponding path program 1 times [2025-02-06 18:43:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996885933] [2025-02-06 18:43:03,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:03,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:03,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:43:03,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:43:03,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:03,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:43:03,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:03,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996885933] [2025-02-06 18:43:03,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996885933] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:03,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:03,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:43:03,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301214006] [2025-02-06 18:43:03,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:03,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:43:03,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:03,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:43:03,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:43:03,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:43:03,400 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) [2025-02-06 18:43:03,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:03,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:43:03,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:03,483 INFO L124 PetriNetUnfolderBase]: 37/117 cut-off events. [2025-02-06 18:43:03,483 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 18:43:03,484 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. [2025-02-06 18:43:03,484 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 15 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2025-02-06 18:43:03,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 118 flow [2025-02-06 18:43:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:43:03,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:43:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2025-02-06 18:43:03,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-02-06 18:43:03,485 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 84 flow. Second operand 3 states and 42 transitions. [2025-02-06 18:43:03,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 118 flow [2025-02-06 18:43:03,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 18:43:03,490 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 66 flow [2025-02-06 18:43:03,490 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} [2025-02-06 18:43:03,490 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2025-02-06 18:43:03,490 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 66 flow [2025-02-06 18:43:03,491 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) [2025-02-06 18:43:03,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:03,491 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:03,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:43:03,491 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)] === [2025-02-06 18:43:03,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:03,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1147853000, now seen corresponding path program 1 times [2025-02-06 18:43:03,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:03,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714586465] [2025-02-06 18:43:03,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:03,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:43:03,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:43:03,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:03,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:03,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:03,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714586465] [2025-02-06 18:43:03,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714586465] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:03,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318967694] [2025-02-06 18:43:03,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:03,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:03,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:43:03,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 18:43:03,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:43:03,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:43:03,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:03,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:03,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:43:03,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:03,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:03,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318967694] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:03,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:03,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-02-06 18:43:03,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259540086] [2025-02-06 18:43:03,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:03,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:03,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:03,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:03,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:03,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:43:03,736 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) [2025-02-06 18:43:03,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:03,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:43:03,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:03,839 INFO L124 PetriNetUnfolderBase]: 37/121 cut-off events. [2025-02-06 18:43:03,839 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-02-06 18:43:03,840 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. [2025-02-06 18:43:03,840 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2025-02-06 18:43:03,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 125 flow [2025-02-06 18:43:03,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:43:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:43:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2025-02-06 18:43:03,841 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2025-02-06 18:43:03,841 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 66 flow. Second operand 7 states and 80 transitions. [2025-02-06 18:43:03,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 125 flow [2025-02-06 18:43:03,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 111 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:03,842 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 92 flow [2025-02-06 18:43:03,842 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} [2025-02-06 18:43:03,843 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2025-02-06 18:43:03,843 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 92 flow [2025-02-06 18:43:03,843 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) [2025-02-06 18:43:03,843 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:03,843 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:03,850 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 [2025-02-06 18:43:04,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:04,044 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)] === [2025-02-06 18:43:04,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:04,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2041417176, now seen corresponding path program 2 times [2025-02-06 18:43:04,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:04,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832278174] [2025-02-06 18:43:04,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:04,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:04,057 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 18:43:04,076 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 16 statements. [2025-02-06 18:43:04,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:04,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-06 18:43:04,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:04,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832278174] [2025-02-06 18:43:04,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832278174] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:04,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:04,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:43:04,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753283862] [2025-02-06 18:43:04,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:04,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:43:04,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:04,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:43:04,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:43:04,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:43:04,842 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) [2025-02-06 18:43:04,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:04,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:43:04,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:04,996 INFO L124 PetriNetUnfolderBase]: 43/128 cut-off events. [2025-02-06 18:43:04,997 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-02-06 18:43:04,997 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. [2025-02-06 18:43:04,998 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 28 selfloop transitions, 5 changer transitions 6/44 dead transitions. [2025-02-06 18:43:04,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 200 flow [2025-02-06 18:43:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-02-06 18:43:04,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2025-02-06 18:43:04,999 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 92 flow. Second operand 6 states and 86 transitions. [2025-02-06 18:43:04,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 200 flow [2025-02-06 18:43:05,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:05,000 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 115 flow [2025-02-06 18:43:05,000 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} [2025-02-06 18:43:05,001 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2025-02-06 18:43:05,001 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 115 flow [2025-02-06 18:43:05,001 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) [2025-02-06 18:43:05,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:05,001 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:05,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:43:05,001 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)] === [2025-02-06 18:43:05,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2041692895, now seen corresponding path program 1 times [2025-02-06 18:43:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:05,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279722450] [2025-02-06 18:43:05,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:05,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:05,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:43:05,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:43:05,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:05,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:05,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279722450] [2025-02-06 18:43:05,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279722450] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:05,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949062969] [2025-02-06 18:43:05,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:05,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:05,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:05,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:43:05,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 18:43:05,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:43:05,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:43:05,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:05,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:05,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 18:43:05,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:05,234 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:05,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949062969] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:05,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:05,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-02-06 18:43:05,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577360621] [2025-02-06 18:43:05,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:05,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 18:43:05,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:05,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 18:43:05,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-06 18:43:05,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:43:05,316 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) [2025-02-06 18:43:05,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:05,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:43:05,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:05,432 INFO L124 PetriNetUnfolderBase]: 27/117 cut-off events. [2025-02-06 18:43:05,432 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2025-02-06 18:43:05,433 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. [2025-02-06 18:43:05,433 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 16 selfloop transitions, 15 changer transitions 0/38 dead transitions. [2025-02-06 18:43:05,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 225 flow [2025-02-06 18:43:05,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:43:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:43:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2025-02-06 18:43:05,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3802469135802469 [2025-02-06 18:43:05,435 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 115 flow. Second operand 15 states and 154 transitions. [2025-02-06 18:43:05,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 225 flow [2025-02-06 18:43:05,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 38 transitions, 216 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:05,437 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 203 flow [2025-02-06 18:43:05,437 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} [2025-02-06 18:43:05,437 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2025-02-06 18:43:05,437 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 203 flow [2025-02-06 18:43:05,437 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) [2025-02-06 18:43:05,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:05,438 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:05,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 18:43:05,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:05,642 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)] === [2025-02-06 18:43:05,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1310840801, now seen corresponding path program 2 times [2025-02-06 18:43:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988764460] [2025-02-06 18:43:05,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:05,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:05,651 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-06 18:43:05,667 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 28 statements. [2025-02-06 18:43:05,667 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:05,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 18:43:06,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:06,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988764460] [2025-02-06 18:43:06,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988764460] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:06,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:06,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:43:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250634537] [2025-02-06 18:43:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:06,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:43:06,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:06,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:43:06,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:43:06,321 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:43:06,322 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) [2025-02-06 18:43:06,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:06,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:43:06,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:06,478 INFO L124 PetriNetUnfolderBase]: 30/119 cut-off events. [2025-02-06 18:43:06,478 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2025-02-06 18:43:06,479 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. [2025-02-06 18:43:06,479 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 38 selfloop transitions, 6 changer transitions 4/53 dead transitions. [2025-02-06 18:43:06,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 341 flow [2025-02-06 18:43:06,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:43:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:43:06,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-02-06 18:43:06,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2025-02-06 18:43:06,480 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 203 flow. Second operand 6 states and 87 transitions. [2025-02-06 18:43:06,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 341 flow [2025-02-06 18:43:06,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 331 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 18:43:06,482 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 233 flow [2025-02-06 18:43:06,483 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} [2025-02-06 18:43:06,483 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2025-02-06 18:43:06,483 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 233 flow [2025-02-06 18:43:06,483 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) [2025-02-06 18:43:06,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:06,483 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:06,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:43:06,484 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)] === [2025-02-06 18:43:06,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1935157546, now seen corresponding path program 1 times [2025-02-06 18:43:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:06,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522796600] [2025-02-06 18:43:06,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:06,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:06,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:43:06,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:43:06,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:06,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:06,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:06,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522796600] [2025-02-06 18:43:06,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522796600] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:06,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113975482] [2025-02-06 18:43:06,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:06,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:06,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:06,676 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:43:06,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 18:43:06,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 18:43:06,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 18:43:06,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:06,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:06,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 18:43:06,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:06,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:06,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113975482] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 18:43:06,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 18:43:06,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-02-06 18:43:06,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574385551] [2025-02-06 18:43:06,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 18:43:06,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 18:43:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:06,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 18:43:06,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-06 18:43:06,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:43:06,952 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) [2025-02-06 18:43:06,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:06,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:43:06,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:07,092 INFO L124 PetriNetUnfolderBase]: 26/123 cut-off events. [2025-02-06 18:43:07,093 INFO L125 PetriNetUnfolderBase]: For 168/169 co-relation queries the response was YES. [2025-02-06 18:43:07,093 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. [2025-02-06 18:43:07,094 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 19 selfloop transitions, 21 changer transitions 0/47 dead transitions. [2025-02-06 18:43:07,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 47 transitions, 367 flow [2025-02-06 18:43:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 18:43:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-06 18:43:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 207 transitions. [2025-02-06 18:43:07,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2025-02-06 18:43:07,095 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 233 flow. Second operand 21 states and 207 transitions. [2025-02-06 18:43:07,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 47 transitions, 367 flow [2025-02-06 18:43:07,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 47 transitions, 359 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 18:43:07,098 INFO L231 Difference]: Finished difference. Result has 82 places, 47 transitions, 336 flow [2025-02-06 18:43:07,098 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} [2025-02-06 18:43:07,098 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2025-02-06 18:43:07,098 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 47 transitions, 336 flow [2025-02-06 18:43:07,099 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) [2025-02-06 18:43:07,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:07,099 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:07,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 18:43:07,299 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 [2025-02-06 18:43:07,300 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)] === [2025-02-06 18:43:07,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:07,300 INFO L85 PathProgramCache]: Analyzing trace with hash -531068683, now seen corresponding path program 2 times [2025-02-06 18:43:07,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:07,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781421929] [2025-02-06 18:43:07,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:07,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:07,313 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 18:43:07,343 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-02-06 18:43:07,344 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:07,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:09,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:09,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781421929] [2025-02-06 18:43:09,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781421929] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:09,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:09,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:09,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303380989] [2025-02-06 18:43:09,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:09,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:09,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:09,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:09,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:09,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 18:43:09,414 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) [2025-02-06 18:43:09,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:09,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 18:43:09,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:10,225 INFO L124 PetriNetUnfolderBase]: 58/184 cut-off events. [2025-02-06 18:43:10,227 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-02-06 18:43:10,227 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 64 conditions per place. [2025-02-06 18:43:10,228 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 60 selfloop transitions, 19 changer transitions 6/86 dead transitions. [2025-02-06 18:43:10,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 86 transitions, 632 flow [2025-02-06 18:43:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:43:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:43:10,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2025-02-06 18:43:10,229 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33903133903133903 [2025-02-06 18:43:10,229 INFO L175 Difference]: Start difference. First operand has 82 places, 47 transitions, 336 flow. Second operand 13 states and 119 transitions. [2025-02-06 18:43:10,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 86 transitions, 632 flow [2025-02-06 18:43:10,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 86 transitions, 589 flow, removed 1 selfloop flow, removed 13 redundant places. [2025-02-06 18:43:10,233 INFO L231 Difference]: Finished difference. Result has 86 places, 61 transitions, 416 flow [2025-02-06 18:43:10,233 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} [2025-02-06 18:43:10,233 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2025-02-06 18:43:10,233 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 416 flow [2025-02-06 18:43:10,233 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) [2025-02-06 18:43:10,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:10,234 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:10,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:43:10,234 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)] === [2025-02-06 18:43:10,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:10,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1264980225, now seen corresponding path program 3 times [2025-02-06 18:43:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:10,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931291223] [2025-02-06 18:43:10,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:10,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:10,243 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 11 equivalence classes. [2025-02-06 18:43:10,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-02-06 18:43:10,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:43:10,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:11,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:11,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931291223] [2025-02-06 18:43:11,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931291223] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:11,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:11,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:11,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434009383] [2025-02-06 18:43:11,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:11,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:11,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:11,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:11,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 18:43:11,689 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) [2025-02-06 18:43:11,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:11,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 18:43:11,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:12,570 INFO L124 PetriNetUnfolderBase]: 62/202 cut-off events. [2025-02-06 18:43:12,570 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2025-02-06 18:43:12,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 202 events. 62/202 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 693 event pairs, 14 based on Foata normal form. 3/205 useless extension candidates. Maximal degree in co-relation 629. Up to 73 conditions per place. [2025-02-06 18:43:12,571 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 59 selfloop transitions, 28 changer transitions 7/95 dead transitions. [2025-02-06 18:43:12,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 777 flow [2025-02-06 18:43:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:43:12,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:43:12,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 132 transitions. [2025-02-06 18:43:12,572 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2875816993464052 [2025-02-06 18:43:12,572 INFO L175 Difference]: Start difference. First operand has 86 places, 61 transitions, 416 flow. Second operand 17 states and 132 transitions. [2025-02-06 18:43:12,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 777 flow [2025-02-06 18:43:12,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 746 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:12,576 INFO L231 Difference]: Finished difference. Result has 102 places, 73 transitions, 559 flow [2025-02-06 18:43:12,576 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=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=559, PETRI_PLACES=102, PETRI_TRANSITIONS=73} [2025-02-06 18:43:12,576 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2025-02-06 18:43:12,576 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 73 transitions, 559 flow [2025-02-06 18:43:12,576 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) [2025-02-06 18:43:12,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:12,576 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:12,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:43:12,577 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)] === [2025-02-06 18:43:12,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1441803114, now seen corresponding path program 1 times [2025-02-06 18:43:12,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:12,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532052996] [2025-02-06 18:43:12,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:12,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:12,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 18:43:12,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 18:43:12,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:12,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:13,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532052996] [2025-02-06 18:43:13,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532052996] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:13,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:13,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 18:43:13,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148282580] [2025-02-06 18:43:13,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:13,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:43:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:13,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:43:13,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:43:13,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 18:43:13,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 73 transitions, 559 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:13,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:13,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 18:43:13,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:14,030 INFO L124 PetriNetUnfolderBase]: 58/189 cut-off events. [2025-02-06 18:43:14,030 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2025-02-06 18:43:14,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 189 events. 58/189 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 617 event pairs, 13 based on Foata normal form. 3/192 useless extension candidates. Maximal degree in co-relation 641. Up to 63 conditions per place. [2025-02-06 18:43:14,032 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 73 selfloop transitions, 16 changer transitions 4/94 dead transitions. [2025-02-06 18:43:14,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 871 flow [2025-02-06 18:43:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 18:43:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 18:43:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2025-02-06 18:43:14,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3374485596707819 [2025-02-06 18:43:14,033 INFO L175 Difference]: Start difference. First operand has 102 places, 73 transitions, 559 flow. Second operand 9 states and 82 transitions. [2025-02-06 18:43:14,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 871 flow [2025-02-06 18:43:14,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 94 transitions, 831 flow, removed 10 selfloop flow, removed 3 redundant places. [2025-02-06 18:43:14,036 INFO L231 Difference]: Finished difference. Result has 104 places, 72 transitions, 555 flow [2025-02-06 18:43:14,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=555, PETRI_PLACES=104, PETRI_TRANSITIONS=72} [2025-02-06 18:43:14,037 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2025-02-06 18:43:14,037 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 72 transitions, 555 flow [2025-02-06 18:43:14,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:14,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:14,037 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:14,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:43:14,038 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-06 18:43:14,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:14,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1281801883, now seen corresponding path program 4 times [2025-02-06 18:43:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:14,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974911785] [2025-02-06 18:43:14,038 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:43:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:14,045 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-06 18:43:14,068 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 18:43:14,069 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:43:14,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974911785] [2025-02-06 18:43:27,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974911785] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:27,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:27,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:43:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051572573] [2025-02-06 18:43:27,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:27,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:43:27,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:27,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:43:27,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:43:27,489 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:43:27,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 72 transitions, 555 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) [2025-02-06 18:43:27,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:27,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:43:27,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:38,553 INFO L124 PetriNetUnfolderBase]: 46/181 cut-off events. [2025-02-06 18:43:38,553 INFO L125 PetriNetUnfolderBase]: For 427/434 co-relation queries the response was YES. [2025-02-06 18:43:38,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 181 events. 46/181 cut-off events. For 427/434 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 661 event pairs, 2 based on Foata normal form. 13/194 useless extension candidates. Maximal degree in co-relation 630. Up to 42 conditions per place. [2025-02-06 18:43:38,554 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 51 selfloop transitions, 28 changer transitions 18/105 dead transitions. [2025-02-06 18:43:38,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 105 transitions, 912 flow [2025-02-06 18:43:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 18:43:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 18:43:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 212 transitions. [2025-02-06 18:43:38,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43621399176954734 [2025-02-06 18:43:38,556 INFO L175 Difference]: Start difference. First operand has 104 places, 72 transitions, 555 flow. Second operand 18 states and 212 transitions. [2025-02-06 18:43:38,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 105 transitions, 912 flow [2025-02-06 18:43:38,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 105 transitions, 865 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-06 18:43:38,560 INFO L231 Difference]: Finished difference. Result has 124 places, 72 transitions, 600 flow [2025-02-06 18:43:38,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=600, PETRI_PLACES=124, PETRI_TRANSITIONS=72} [2025-02-06 18:43:38,561 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2025-02-06 18:43:38,562 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 72 transitions, 600 flow [2025-02-06 18:43:38,562 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) [2025-02-06 18:43:38,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:38,563 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:38,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:43:38,563 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-06 18:43:38,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:38,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1323072675, now seen corresponding path program 5 times [2025-02-06 18:43:38,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:38,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576671738] [2025-02-06 18:43:38,563 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:43:38,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:38,581 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 11 equivalence classes. [2025-02-06 18:43:38,637 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 18:43:38,638 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-06 18:43:38,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:43:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576671738] [2025-02-06 18:43:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576671738] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031148532] [2025-02-06 18:43:41,052 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:43:41,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:43:41,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:43:41,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:43:41,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 18:43:41,096 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 11 equivalence classes. [2025-02-06 18:43:41,181 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 18:43:41,181 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-06 18:43:41,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:41,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-02-06 18:43:41,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:43:42,955 INFO L349 Elim1Store]: treesize reduction 180, result has 38.1 percent of original size [2025-02-06 18:43:42,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 141 [2025-02-06 18:43:43,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 18:43:43,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 505 treesize of output 323 [2025-02-06 18:43:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 18:43:45,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 18:43:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:46,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031148532] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 18:43:46,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 18:43:46,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [26, 23] total 51 [2025-02-06 18:43:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503493135] [2025-02-06 18:43:46,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:46,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:43:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:46,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:43:46,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2349, Unknown=0, NotChecked=0, Total=2756 [2025-02-06 18:43:46,312 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-02-06 18:43:46,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 72 transitions, 600 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:46,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:46,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-02-06 18:43:46,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:46,538 INFO L124 PetriNetUnfolderBase]: 63/204 cut-off events. [2025-02-06 18:43:46,538 INFO L125 PetriNetUnfolderBase]: For 767/767 co-relation queries the response was YES. [2025-02-06 18:43:46,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 204 events. 63/204 cut-off events. For 767/767 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 690 event pairs, 9 based on Foata normal form. 4/208 useless extension candidates. Maximal degree in co-relation 892. Up to 53 conditions per place. [2025-02-06 18:43:46,539 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 72 selfloop transitions, 20 changer transitions 2/95 dead transitions. [2025-02-06 18:43:46,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 95 transitions, 929 flow [2025-02-06 18:43:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 18:43:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 18:43:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2025-02-06 18:43:46,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-02-06 18:43:46,541 INFO L175 Difference]: Start difference. First operand has 124 places, 72 transitions, 600 flow. Second operand 7 states and 81 transitions. [2025-02-06 18:43:46,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 95 transitions, 929 flow [2025-02-06 18:43:46,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 95 transitions, 832 flow, removed 19 selfloop flow, removed 14 redundant places. [2025-02-06 18:43:46,546 INFO L231 Difference]: Finished difference. Result has 110 places, 74 transitions, 616 flow [2025-02-06 18:43:46,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=616, PETRI_PLACES=110, PETRI_TRANSITIONS=74} [2025-02-06 18:43:46,547 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2025-02-06 18:43:46,547 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 74 transitions, 616 flow [2025-02-06 18:43:46,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:43:46,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:46,547 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:46,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 18:43:46,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 18:43:46,752 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-06 18:43:46,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:46,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1264461285, now seen corresponding path program 6 times [2025-02-06 18:43:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:46,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268796701] [2025-02-06 18:43:46,753 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 18:43:46,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:46,767 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 42 statements into 11 equivalence classes. [2025-02-06 18:43:46,787 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 12 of 42 statements. [2025-02-06 18:43:46,790 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 18:43:46,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:47,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:47,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268796701] [2025-02-06 18:43:47,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268796701] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:47,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:47,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:47,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921911157] [2025-02-06 18:43:47,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:47,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:47,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:47,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:48,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 18:43:48,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 74 transitions, 616 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) [2025-02-06 18:43:48,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:48,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 18:43:48,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:48,804 INFO L124 PetriNetUnfolderBase]: 69/223 cut-off events. [2025-02-06 18:43:48,804 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2025-02-06 18:43:48,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 223 events. 69/223 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 813 event pairs, 12 based on Foata normal form. 3/226 useless extension candidates. Maximal degree in co-relation 848. Up to 86 conditions per place. [2025-02-06 18:43:48,806 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 67 selfloop transitions, 30 changer transitions 2/100 dead transitions. [2025-02-06 18:43:48,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 100 transitions, 956 flow [2025-02-06 18:43:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 18:43:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 18:43:48,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 127 transitions. [2025-02-06 18:43:48,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29398148148148145 [2025-02-06 18:43:48,807 INFO L175 Difference]: Start difference. First operand has 110 places, 74 transitions, 616 flow. Second operand 16 states and 127 transitions. [2025-02-06 18:43:48,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 100 transitions, 956 flow [2025-02-06 18:43:48,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 100 transitions, 930 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-02-06 18:43:48,812 INFO L231 Difference]: Finished difference. Result has 125 places, 81 transitions, 742 flow [2025-02-06 18:43:48,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=742, PETRI_PLACES=125, PETRI_TRANSITIONS=81} [2025-02-06 18:43:48,812 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2025-02-06 18:43:48,812 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 81 transitions, 742 flow [2025-02-06 18:43:48,813 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) [2025-02-06 18:43:48,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:48,813 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:48,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:43:48,813 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)] === [2025-02-06 18:43:48,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1249267875, now seen corresponding path program 7 times [2025-02-06 18:43:48,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:48,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044365549] [2025-02-06 18:43:48,814 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 18:43:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:48,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 18:43:48,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 18:43:48,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:48,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:49,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:49,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044365549] [2025-02-06 18:43:49,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044365549] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:49,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:49,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:49,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662685717] [2025-02-06 18:43:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:49,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:49,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:49,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:49,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:49,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 18:43:49,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 81 transitions, 742 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) [2025-02-06 18:43:49,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:49,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 18:43:49,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:50,609 INFO L124 PetriNetUnfolderBase]: 66/222 cut-off events. [2025-02-06 18:43:50,609 INFO L125 PetriNetUnfolderBase]: For 857/857 co-relation queries the response was YES. [2025-02-06 18:43:50,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 222 events. 66/222 cut-off events. For 857/857 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 826 event pairs, 7 based on Foata normal form. 3/225 useless extension candidates. Maximal degree in co-relation 937. Up to 74 conditions per place. [2025-02-06 18:43:50,612 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 69 selfloop transitions, 41 changer transitions 2/113 dead transitions. [2025-02-06 18:43:50,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 113 transitions, 1190 flow [2025-02-06 18:43:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 18:43:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 18:43:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 138 transitions. [2025-02-06 18:43:50,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2839506172839506 [2025-02-06 18:43:50,614 INFO L175 Difference]: Start difference. First operand has 125 places, 81 transitions, 742 flow. Second operand 18 states and 138 transitions. [2025-02-06 18:43:50,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 113 transitions, 1190 flow [2025-02-06 18:43:50,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 113 transitions, 1143 flow, removed 7 selfloop flow, removed 9 redundant places. [2025-02-06 18:43:50,619 INFO L231 Difference]: Finished difference. Result has 138 places, 92 transitions, 937 flow [2025-02-06 18:43:50,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=937, PETRI_PLACES=138, PETRI_TRANSITIONS=92} [2025-02-06 18:43:50,620 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2025-02-06 18:43:50,620 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 92 transitions, 937 flow [2025-02-06 18:43:50,621 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) [2025-02-06 18:43:50,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:50,621 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:50,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:43:50,621 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-06 18:43:50,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1746223828, now seen corresponding path program 1 times [2025-02-06 18:43:50,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:50,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439034727] [2025-02-06 18:43:50,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:50,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 18:43:50,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 18:43:50,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:50,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:52,537 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:52,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:52,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439034727] [2025-02-06 18:43:52,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439034727] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:52,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:52,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:52,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650143742] [2025-02-06 18:43:52,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:52,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:52,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:52,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:52,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:52,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 18:43:52,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 92 transitions, 937 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) [2025-02-06 18:43:52,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:52,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 18:43:52,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:53,548 INFO L124 PetriNetUnfolderBase]: 55/220 cut-off events. [2025-02-06 18:43:53,548 INFO L125 PetriNetUnfolderBase]: For 1109/1109 co-relation queries the response was YES. [2025-02-06 18:43:53,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 220 events. 55/220 cut-off events. For 1109/1109 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 920 event pairs, 20 based on Foata normal form. 3/221 useless extension candidates. Maximal degree in co-relation 1003. Up to 117 conditions per place. [2025-02-06 18:43:53,550 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 61 selfloop transitions, 25 changer transitions 12/111 dead transitions. [2025-02-06 18:43:53,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 111 transitions, 1237 flow [2025-02-06 18:43:53,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 18:43:53,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 18:43:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 147 transitions. [2025-02-06 18:43:53,551 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2025-02-06 18:43:53,551 INFO L175 Difference]: Start difference. First operand has 138 places, 92 transitions, 937 flow. Second operand 16 states and 147 transitions. [2025-02-06 18:43:53,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 111 transitions, 1237 flow [2025-02-06 18:43:53,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 111 transitions, 1147 flow, removed 18 selfloop flow, removed 9 redundant places. [2025-02-06 18:43:53,557 INFO L231 Difference]: Finished difference. Result has 146 places, 95 transitions, 926 flow [2025-02-06 18:43:53,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=926, PETRI_PLACES=146, PETRI_TRANSITIONS=95} [2025-02-06 18:43:53,557 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 117 predicate places. [2025-02-06 18:43:53,561 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 95 transitions, 926 flow [2025-02-06 18:43:53,562 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) [2025-02-06 18:43:53,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:53,562 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:53,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 18:43:53,562 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)] === [2025-02-06 18:43:53,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:53,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1756948588, now seen corresponding path program 2 times [2025-02-06 18:43:53,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:53,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179134887] [2025-02-06 18:43:53,562 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:43:53,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:53,569 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-06 18:43:53,585 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-02-06 18:43:53,585 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:43:53,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:55,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:55,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179134887] [2025-02-06 18:43:55,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179134887] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:55,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:55,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:55,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621603314] [2025-02-06 18:43:55,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:55,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:55,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:55,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:55,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:55,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 18:43:55,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 95 transitions, 926 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) [2025-02-06 18:43:55,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:55,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 18:43:55,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:56,241 INFO L124 PetriNetUnfolderBase]: 52/213 cut-off events. [2025-02-06 18:43:56,244 INFO L125 PetriNetUnfolderBase]: For 912/912 co-relation queries the response was YES. [2025-02-06 18:43:56,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 213 events. 52/213 cut-off events. For 912/912 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 878 event pairs, 17 based on Foata normal form. 3/214 useless extension candidates. Maximal degree in co-relation 993. Up to 109 conditions per place. [2025-02-06 18:43:56,246 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 63 selfloop transitions, 26 changer transitions 7/109 dead transitions. [2025-02-06 18:43:56,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 109 transitions, 1163 flow [2025-02-06 18:43:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:43:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:43:56,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 134 transitions. [2025-02-06 18:43:56,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2025-02-06 18:43:56,247 INFO L175 Difference]: Start difference. First operand has 146 places, 95 transitions, 926 flow. Second operand 14 states and 134 transitions. [2025-02-06 18:43:56,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 109 transitions, 1163 flow [2025-02-06 18:43:56,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 109 transitions, 1115 flow, removed 6 selfloop flow, removed 8 redundant places. [2025-02-06 18:43:56,258 INFO L231 Difference]: Finished difference. Result has 149 places, 95 transitions, 946 flow [2025-02-06 18:43:56,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=946, PETRI_PLACES=149, PETRI_TRANSITIONS=95} [2025-02-06 18:43:56,262 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2025-02-06 18:43:56,262 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 95 transitions, 946 flow [2025-02-06 18:43:56,262 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) [2025-02-06 18:43:56,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:56,262 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:56,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 18:43:56,262 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)] === [2025-02-06 18:43:56,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1079155786, now seen corresponding path program 3 times [2025-02-06 18:43:56,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:56,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482853913] [2025-02-06 18:43:56,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:43:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:56,273 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 11 equivalence classes. [2025-02-06 18:43:56,290 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-02-06 18:43:56,290 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:43:56,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:43:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:43:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:43:58,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482853913] [2025-02-06 18:43:58,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482853913] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:43:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:43:58,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:43:58,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439045337] [2025-02-06 18:43:58,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:43:58,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:43:58,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:43:58,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:43:58,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:43:58,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 18:43:58,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 95 transitions, 946 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) [2025-02-06 18:43:58,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:43:58,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 18:43:58,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:43:58,781 INFO L124 PetriNetUnfolderBase]: 51/212 cut-off events. [2025-02-06 18:43:58,782 INFO L125 PetriNetUnfolderBase]: For 958/958 co-relation queries the response was YES. [2025-02-06 18:43:58,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 212 events. 51/212 cut-off events. For 958/958 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 872 event pairs, 17 based on Foata normal form. 3/213 useless extension candidates. Maximal degree in co-relation 1012. Up to 115 conditions per place. [2025-02-06 18:43:58,783 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 60 selfloop transitions, 21 changer transitions 11/105 dead transitions. [2025-02-06 18:43:58,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 105 transitions, 1169 flow [2025-02-06 18:43:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:43:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:43:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 138 transitions. [2025-02-06 18:43:58,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2025-02-06 18:43:58,784 INFO L175 Difference]: Start difference. First operand has 149 places, 95 transitions, 946 flow. Second operand 15 states and 138 transitions. [2025-02-06 18:43:58,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 105 transitions, 1169 flow [2025-02-06 18:43:58,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 105 transitions, 1105 flow, removed 3 selfloop flow, removed 13 redundant places. [2025-02-06 18:43:58,790 INFO L231 Difference]: Finished difference. Result has 150 places, 91 transitions, 893 flow [2025-02-06 18:43:58,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=893, PETRI_PLACES=150, PETRI_TRANSITIONS=91} [2025-02-06 18:43:58,790 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2025-02-06 18:43:58,791 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 91 transitions, 893 flow [2025-02-06 18:43:58,791 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) [2025-02-06 18:43:58,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:43:58,791 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:43:58,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 18:43:58,791 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)] === [2025-02-06 18:43:58,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:43:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash 543492596, now seen corresponding path program 1 times [2025-02-06 18:43:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:43:58,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052410283] [2025-02-06 18:43:58,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:43:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:43:58,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 18:43:58,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 18:43:58,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:43:58,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:02,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:02,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052410283] [2025-02-06 18:44:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052410283] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:02,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:02,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:44:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404001590] [2025-02-06 18:44:02,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:02,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:44:02,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:02,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:44:02,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:44:02,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 18:44:02,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 91 transitions, 893 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) [2025-02-06 18:44:02,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:02,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 18:44:02,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:03,317 INFO L124 PetriNetUnfolderBase]: 49/206 cut-off events. [2025-02-06 18:44:03,317 INFO L125 PetriNetUnfolderBase]: For 959/959 co-relation queries the response was YES. [2025-02-06 18:44:03,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 206 events. 49/206 cut-off events. For 959/959 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 854 event pairs, 16 based on Foata normal form. 3/207 useless extension candidates. Maximal degree in co-relation 1010. Up to 112 conditions per place. [2025-02-06 18:44:03,319 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 62 selfloop transitions, 22 changer transitions 8/105 dead transitions. [2025-02-06 18:44:03,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 105 transitions, 1191 flow [2025-02-06 18:44:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:44:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:44:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 137 transitions. [2025-02-06 18:44:03,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33827160493827163 [2025-02-06 18:44:03,320 INFO L175 Difference]: Start difference. First operand has 150 places, 91 transitions, 893 flow. Second operand 15 states and 137 transitions. [2025-02-06 18:44:03,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 105 transitions, 1191 flow [2025-02-06 18:44:03,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 105 transitions, 1120 flow, removed 3 selfloop flow, removed 14 redundant places. [2025-02-06 18:44:03,325 INFO L231 Difference]: Finished difference. Result has 147 places, 93 transitions, 920 flow [2025-02-06 18:44:03,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=920, PETRI_PLACES=147, PETRI_TRANSITIONS=93} [2025-02-06 18:44:03,326 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2025-02-06 18:44:03,326 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 93 transitions, 920 flow [2025-02-06 18:44:03,326 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) [2025-02-06 18:44:03,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:03,326 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:03,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 18:44:03,326 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-06 18:44:03,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash 72598738, now seen corresponding path program 2 times [2025-02-06 18:44:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:03,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109841329] [2025-02-06 18:44:03,327 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:44:03,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:03,333 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-06 18:44:03,341 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-02-06 18:44:03,342 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:44:03,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:04,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:04,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109841329] [2025-02-06 18:44:04,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109841329] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:04,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:04,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:44:04,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249529815] [2025-02-06 18:44:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:04,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:44:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:04,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:44:04,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:44:04,387 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 18:44:04,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 93 transitions, 920 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) [2025-02-06 18:44:04,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:04,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 18:44:04,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:05,222 INFO L124 PetriNetUnfolderBase]: 44/186 cut-off events. [2025-02-06 18:44:05,222 INFO L125 PetriNetUnfolderBase]: For 870/870 co-relation queries the response was YES. [2025-02-06 18:44:05,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 186 events. 44/186 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 714 event pairs, 9 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 887. Up to 84 conditions per place. [2025-02-06 18:44:05,224 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 55 selfloop transitions, 29 changer transitions 8/104 dead transitions. [2025-02-06 18:44:05,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 104 transitions, 1162 flow [2025-02-06 18:44:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 18:44:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 18:44:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 154 transitions. [2025-02-06 18:44:05,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3355119825708061 [2025-02-06 18:44:05,225 INFO L175 Difference]: Start difference. First operand has 147 places, 93 transitions, 920 flow. Second operand 17 states and 154 transitions. [2025-02-06 18:44:05,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 104 transitions, 1162 flow [2025-02-06 18:44:05,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 104 transitions, 1137 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-02-06 18:44:05,230 INFO L231 Difference]: Finished difference. Result has 154 places, 87 transitions, 911 flow [2025-02-06 18:44:05,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=911, PETRI_PLACES=154, PETRI_TRANSITIONS=87} [2025-02-06 18:44:05,231 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2025-02-06 18:44:05,231 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 87 transitions, 911 flow [2025-02-06 18:44:05,231 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) [2025-02-06 18:44:05,231 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:05,231 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:05,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 18:44:05,231 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-06 18:44:05,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:05,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1934419758, now seen corresponding path program 3 times [2025-02-06 18:44:05,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:05,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789868069] [2025-02-06 18:44:05,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:44:05,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:05,237 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 43 statements into 11 equivalence classes. [2025-02-06 18:44:05,246 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 43 statements. [2025-02-06 18:44:05,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:44:05,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:06,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:06,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789868069] [2025-02-06 18:44:06,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789868069] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:06,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:06,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:44:06,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860123604] [2025-02-06 18:44:06,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:06,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:44:06,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:06,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:44:06,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:44:06,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 18:44:06,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 87 transitions, 911 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) [2025-02-06 18:44:06,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:06,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 18:44:06,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:07,539 INFO L124 PetriNetUnfolderBase]: 43/187 cut-off events. [2025-02-06 18:44:07,540 INFO L125 PetriNetUnfolderBase]: For 1099/1099 co-relation queries the response was YES. [2025-02-06 18:44:07,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 187 events. 43/187 cut-off events. For 1099/1099 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 700 event pairs, 11 based on Foata normal form. 6/192 useless extension candidates. Maximal degree in co-relation 982. Up to 86 conditions per place. [2025-02-06 18:44:07,541 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 54 selfloop transitions, 21 changer transitions 16/101 dead transitions. [2025-02-06 18:44:07,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 101 transitions, 1223 flow [2025-02-06 18:44:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 18:44:07,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 18:44:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 137 transitions. [2025-02-06 18:44:07,542 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33827160493827163 [2025-02-06 18:44:07,542 INFO L175 Difference]: Start difference. First operand has 154 places, 87 transitions, 911 flow. Second operand 15 states and 137 transitions. [2025-02-06 18:44:07,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 101 transitions, 1223 flow [2025-02-06 18:44:07,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 101 transitions, 1139 flow, removed 4 selfloop flow, removed 15 redundant places. [2025-02-06 18:44:07,547 INFO L231 Difference]: Finished difference. Result has 148 places, 81 transitions, 819 flow [2025-02-06 18:44:07,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=819, PETRI_PLACES=148, PETRI_TRANSITIONS=81} [2025-02-06 18:44:07,547 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2025-02-06 18:44:07,547 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 81 transitions, 819 flow [2025-02-06 18:44:07,547 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) [2025-02-06 18:44:07,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:07,548 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:07,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 18:44:07,548 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)] === [2025-02-06 18:44:07,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:07,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1350384536, now seen corresponding path program 4 times [2025-02-06 18:44:07,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:07,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368088513] [2025-02-06 18:44:07,548 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:44:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:07,555 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-02-06 18:44:07,569 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 18:44:07,570 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:44:07,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:09,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:09,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368088513] [2025-02-06 18:44:09,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368088513] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:09,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:09,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 18:44:09,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912635195] [2025-02-06 18:44:09,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:09,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 18:44:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:09,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 18:44:09,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 18:44:09,617 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:44:09,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 81 transitions, 819 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:44:09,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:09,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:44:09,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:11,074 INFO L124 PetriNetUnfolderBase]: 29/157 cut-off events. [2025-02-06 18:44:11,074 INFO L125 PetriNetUnfolderBase]: For 729/729 co-relation queries the response was YES. [2025-02-06 18:44:11,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 157 events. 29/157 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 550 event pairs, 11 based on Foata normal form. 3/160 useless extension candidates. Maximal degree in co-relation 763. Up to 65 conditions per place. [2025-02-06 18:44:11,075 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 49 selfloop transitions, 18 changer transitions 9/88 dead transitions. [2025-02-06 18:44:11,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 88 transitions, 991 flow [2025-02-06 18:44:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 18:44:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 18:44:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 153 transitions. [2025-02-06 18:44:11,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2025-02-06 18:44:11,076 INFO L175 Difference]: Start difference. First operand has 148 places, 81 transitions, 819 flow. Second operand 14 states and 153 transitions. [2025-02-06 18:44:11,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 88 transitions, 991 flow [2025-02-06 18:44:11,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 88 transitions, 927 flow, removed 8 selfloop flow, removed 15 redundant places. [2025-02-06 18:44:11,081 INFO L231 Difference]: Finished difference. Result has 143 places, 78 transitions, 766 flow [2025-02-06 18:44:11,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=766, PETRI_PLACES=143, PETRI_TRANSITIONS=78} [2025-02-06 18:44:11,082 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2025-02-06 18:44:11,082 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 78 transitions, 766 flow [2025-02-06 18:44:11,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:44:11,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:11,082 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:11,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 18:44:11,082 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-06 18:44:11,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash 66103307, now seen corresponding path program 1 times [2025-02-06 18:44:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642027368] [2025-02-06 18:44:11,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:44:11,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:11,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 18:44:11,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 18:44:11,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:44:11,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:12,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642027368] [2025-02-06 18:44:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642027368] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:12,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:12,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 18:44:12,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325522558] [2025-02-06 18:44:12,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:12,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 18:44:12,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:12,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 18:44:12,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 18:44:12,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-02-06 18:44:12,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 78 transitions, 766 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) [2025-02-06 18:44:12,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:12,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-02-06 18:44:12,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:12,804 INFO L124 PetriNetUnfolderBase]: 35/151 cut-off events. [2025-02-06 18:44:12,804 INFO L125 PetriNetUnfolderBase]: For 599/599 co-relation queries the response was YES. [2025-02-06 18:44:12,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 151 events. 35/151 cut-off events. For 599/599 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 450 event pairs, 4 based on Foata normal form. 2/153 useless extension candidates. Maximal degree in co-relation 730. Up to 30 conditions per place. [2025-02-06 18:44:12,805 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 53 selfloop transitions, 29 changer transitions 0/89 dead transitions. [2025-02-06 18:44:12,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 89 transitions, 991 flow [2025-02-06 18:44:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 18:44:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 18:44:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 110 transitions. [2025-02-06 18:44:12,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.31339031339031337 [2025-02-06 18:44:12,806 INFO L175 Difference]: Start difference. First operand has 143 places, 78 transitions, 766 flow. Second operand 13 states and 110 transitions. [2025-02-06 18:44:12,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 89 transitions, 991 flow [2025-02-06 18:44:12,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 89 transitions, 924 flow, removed 7 selfloop flow, removed 15 redundant places. [2025-02-06 18:44:12,810 INFO L231 Difference]: Finished difference. Result has 130 places, 82 transitions, 784 flow [2025-02-06 18:44:12,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=784, PETRI_PLACES=130, PETRI_TRANSITIONS=82} [2025-02-06 18:44:12,810 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2025-02-06 18:44:12,810 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 82 transitions, 784 flow [2025-02-06 18:44:12,810 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) [2025-02-06 18:44:12,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:12,811 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:12,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-06 18:44:12,811 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-02-06 18:44:12,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1171283234, now seen corresponding path program 4 times [2025-02-06 18:44:12,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:12,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592849565] [2025-02-06 18:44:12,812 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 18:44:12,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:12,820 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 43 statements into 2 equivalence classes. [2025-02-06 18:44:12,839 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 18:44:12,839 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 18:44:12,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 18:44:14,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592849565] [2025-02-06 18:44:14,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592849565] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:44:14,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:44:14,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 18:44:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504784239] [2025-02-06 18:44:14,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:44:14,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 18:44:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:44:14,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 18:44:14,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-06 18:44:14,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-02-06 18:44:14,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 82 transitions, 784 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:44:14,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:44:14,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-02-06 18:44:14,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:44:15,419 INFO L124 PetriNetUnfolderBase]: 34/157 cut-off events. [2025-02-06 18:44:15,420 INFO L125 PetriNetUnfolderBase]: For 630/630 co-relation queries the response was YES. [2025-02-06 18:44:15,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 157 events. 34/157 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 512 event pairs, 5 based on Foata normal form. 3/160 useless extension candidates. Maximal degree in co-relation 707. Up to 76 conditions per place. [2025-02-06 18:44:15,425 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 57 selfloop transitions, 15 changer transitions 9/92 dead transitions. [2025-02-06 18:44:15,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 92 transitions, 1005 flow [2025-02-06 18:44:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 18:44:15,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 18:44:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2025-02-06 18:44:15,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2025-02-06 18:44:15,428 INFO L175 Difference]: Start difference. First operand has 130 places, 82 transitions, 784 flow. Second operand 12 states and 136 transitions. [2025-02-06 18:44:15,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 92 transitions, 1005 flow [2025-02-06 18:44:15,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 92 transitions, 940 flow, removed 9 selfloop flow, removed 10 redundant places. [2025-02-06 18:44:15,437 INFO L231 Difference]: Finished difference. Result has 133 places, 80 transitions, 733 flow [2025-02-06 18:44:15,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=733, PETRI_PLACES=133, PETRI_TRANSITIONS=80} [2025-02-06 18:44:15,437 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2025-02-06 18:44:15,437 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 80 transitions, 733 flow [2025-02-06 18:44:15,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:44:15,437 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:44:15,437 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:44:15,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-06 18:44:15,437 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)] === [2025-02-06 18:44:15,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:44:15,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1270487264, now seen corresponding path program 5 times [2025-02-06 18:44:15,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:44:15,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826237207] [2025-02-06 18:44:15,438 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:44:15,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:44:15,453 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 11 equivalence classes. [2025-02-06 18:44:15,479 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 18:44:15,480 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-06 18:44:15,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:44:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:44:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826237207] [2025-02-06 18:44:17,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826237207] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 18:44:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580994138] [2025-02-06 18:44:17,601 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 18:44:17,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 18:44:17,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:44:17,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 18:44:17,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 18:44:17,664 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 11 equivalence classes. [2025-02-06 18:44:17,746 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 18:44:17,746 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-06 18:44:17,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:44:17,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-02-06 18:44:17,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:44:19,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-02-06 18:44:19,474 INFO L349 Elim1Store]: treesize reduction 180, result has 38.1 percent of original size [2025-02-06 18:44:19,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 141 [2025-02-06 18:44:20,158 INFO L349 Elim1Store]: treesize reduction 8, result has 95.3 percent of original size [2025-02-06 18:44:20,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 507 treesize of output 611